BRITISH STANDARD
BS EN 14382:2005 +A1:2009
Safety devices for gas pressure regulating stations and installations — Gas safety shut-off devices for inlet pressures up to 100 bar
ICS 23.060.40
BS EN 14382:2005+A1:2009
National foreword This British Standard is the UK implementation of EN 14382:2005+A1:2009. It supersedes BS EN 14382:2005 which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment 1 is indicated by a b . The UK participation in its preparation was entrusted to Technical Committee GSE/32, Gas governors. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obliga obligations. tions.
This British Standard was published under the authority of the Standards Policy and Strategy Committee on 23 February 2006
© BSI 2009
ISBN 978 ISBN 978 0 580 67990 2
/corrigenda issued since publication Amendments /corrigenda Date
Comments
30 June June 2009 2009
Implementation of CEN amendment A1:2009
EUROPEAN STANDARD
EN 14382:2005+A1
NORME EUROPÉENNE EUROPÄISCHE NORM
March 2009
ICS 23.060.40
Supersedes EN 14382:2005
English Version
Safety devices for gas pressure regulating stations and installations - Gas safety shut-off devices for inlet pressures up to 100 bar Dispositifs de sécurité pour postes et installations de détente-régulation de pression de gaz - Clapets de sécurité pour pressions amont jusqu'à 100 bar
Sicherheitseinrichtungen für Gas-Druckregelanlagen und einrichtungen - Gas-Sicherheitsabsperreinrichtungen für Eingangsdrücke bis 100 bar
This European Standard was approved by CEN on 30 December 2004 and includes Amendment 1 approved by CEN on 12 January 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by t ranslation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2009 CEN
All rights rights of exploitation in any form and by any any means reserved worldwide for CEN national Members.
Ref. No. EN 14382:2005+A1:2009: E
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Contents page Foreword ..............................................................................................................................................................5 1
Scope ......................................................................................................................................................6
2
Normative references ............................................................................................................................7
3
Terms, definitions and symbols...........................................................................................................9
4 4.1 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.1.7 4.1.8 4.1.9 4.1.10 4.1.11 4.2 4.2.1 4.2.2 4.2.3 4.3 4.3.1 4.3.2 4.3.3 4.3.4 4.3.5 4.3.6
Construction requirements.................................................................................................................20 Basic requirements .............................................................................................................................20 General .................................................................................................................................................. 20 Types of shut-off devices ...................................................................................................................21 End connections ..................................................................................................................................22 Flange ratings ......................................................................................................................................22 Nominal sizes and face-to-face dimensions .....................................................................................23 Sealing of the adjusting device ..........................................................................................................26 Set range...............................................................................................................................................26 External visual Indication of the position of the closing member ..................................................26 Springs..................................................................................................................................................26 Parts transmitting actuating forces ...................................................................................................26 !Replaceable parts that may be affected by erosion or abrasion .............................................. 26 Materials ...............................................................................................................................................26 Requirements for metallic materials ..................................................................................................26 Requirements for elastomers (including vulcanized rubber) .........................................................31 Requirements for non metallic materials different from those in 4.2.2 .........................................31 Strength of housings...........................................................................................................................32 Body and its inner metallic partition walls" ..................................................................................32 Flanges .................................................................................................................................................32 !Other pressure containing parts ..................................................................................................32 Inner metallic partition walls ..............................................................................................................34 Minimum values of safety factor ........................................................................................................34 Welded joint coefficient ......................................................................................................................35
5 5.1 5.1.1 5.1.2 5.1.3 5.1.4 5.1.5 5.1.6 5.1.7 5.2 5.2.1 5.2.2 5.2.3 5.3 5.4 5.5 5.5.1 5.5.2 5.6 5.7
Functional requirements .....................................................................................................................35 General..................................................................................................................................................35 Shutting-off and opening ....................................................................................................................35 Mounting position................................................................................................................................35 Bypass ..................................................................................................................................................35 Ice formation ........................................................................................................................................35 Fail-close conditions ...........................................................................................................................35 Pressure drop ......................................................................................................................................35 !Surveillance and maintenance ......................................................................................................36 Shell strength, external tightness and internal sealing ...................................................................36 Shell strength .......................................................................................................................................36 External tightness................................................................................................................................36 Internal sealing ....................................................................................................................................36 Accuracy group ...................................................................................................................................37 Response time .....................................................................................................................................37 Relatching difference and unlatching ...............................................................................................37 Relatching difference ..........................................................................................................................37 Unlatching under mechanical impact ................................................................................................37 Closing force ........................................................................................................................................38 Endurance and accelerated ageing ...................................................................................................38
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5.8 5.9 5.10
Strength of the trip mechanism, valve seat and closing member against the dynamic impact of flowing gas .......................................................................................................................... 38 Flow coefficient ................................................................................................................................... 39 Final visual inspection ........................................................................................................................39
6 6.1 6.2 6.3 6.4 6.5 6.6
Testing .................................................................................................................................................. 39 General ................................................................................................................................................. 39 Tests .....................................................................................................................................................39 Type test ............................................................................................................................................... 40 Selection of test samples ................................................................................................................... 41 Routine tests ........................................................................................................................................ 41 Production surveillance ......................................................................................................................41
7 7.1 7.2 7.3 7.3.1 7.3.2 7.4 7.5 7.6 7.7 7.7.1 7.7.2 7.8 7.9 7.9.1 7.9.2 7.9.3 7.9.4 7.9.5 7.10 7.11 7.11.1 7.11.2 7.12 7.13 7.14 7.15
Test and verification methods ........................................................................................................... 41 Dimensional check and visual inspection ........................................................................................41 Materials check .................................................................................................................................... 41 Verification of the strength of pressure containing parts and inner metallic partition walls......42 Strength calculation method .............................................................................................................. 42 Experimental design method ............................................................................................................. 42 Verification of the strength of parts transmitting actuating forces ............................................... 43 Shell and inner metallic partition walls strength test ...................................................................... 43 Alternative shell and inner metallic walls strength test .................................................................. 44 External tightness test ........................................................................................................................44 External tightness test of metallic housing ...................................................................................... 44 External tightness test of chambers bounded on at least one side by a diaphragm................... 45 Internal sealing test ............................................................................................................................. 46 Accuracy group ................................................................................................................................... 46 General conditions .............................................................................................................................. 46 Test at ambient temperature .............................................................................................................. 46 Test at the limit temperatures –20 °C or –10 °C and 60 °C ..............................................................47 !Verification of the upper limit of the highest set range for overpressure monitoring" ...... 48 Determination of flow coefficient....................................................................................................... 48 Response time .....................................................................................................................................50 Relatching difference and unlatching ............................................................................................... 51 !Trip pressure for over-pressure monitoring" .......................................................................... 51 Lower trip pressure ............................................................................................................................. 51 Closing force........................................................................................................................................52 Endurance and accelerated ageing ................................................................................................... 53 Resistance to gas of non metallic parts............................................................................................ 53 Verification of the strength of the trip mechanism, valve seat and closing member against dynamic impact of flowing gas .......................................................................................................... 53 7.16 Final visual inspection ........................................................................................................................54 7.16.1 After type test ...................................................................................................................................... 54 7.16.2 After routine tests and production surveillance ..............................................................................54 8 8.1 8.1.1 8.1.2 8.2 8.2.1 8.2.2 8.2.3 8.3 8.3.1 8.3.2
Documentation .................................................................................................................................... 54 Documentation related to type test ................................................................................................... 54 Documentation required prior to type test ....................................................................................... 54 Test report ............................................................................................................................................55 Documentation for the customer ....................................................................................................... 55 Sizing equation .................................................................................................................................... 55 Documentation provided at the request of the customer ............................................................... 55 Documentation provided with the shut-off device ........................................................................... 55 Documentation related to production surveillance in accordance with 6.6..................................56 Documentation to be available for production surveillance ........................................................... 56 Production surveillance report .......................................................................................................... 56
9 9.1 9.2 9.3
Marking ................................................................................................................................................. 56 General requirements ......................................................................................................................... 56 Marking of connections for sensing, exhaust and breather lines .................................................. 57 Identification of auxiliary devices ......................................................................................................57
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Annex A (informative) Ice formation ...............................................................................................................58 A.1 General..................................................................................................................................................58 A.2 Requirements .......................................................................................................................................58 A.3 Tests......................................................................................................................................................58 Annex B (informative) Compliance evaluation ...............................................................................................59 B.1 General..................................................................................................................................................59 B.2 Introduction ..........................................................................................................................................59 B.3 Procedure .............................................................................................................................................59 B.4 Manufacturer’s compliance evaluation .............................................................................................60 B.5 Issue of the certificate of compliance ...............................................................................................60 Annex C (informative) Pressure drop and flow coefficient ...........................................................................61 C.1 Calculation method for pressure drop throughout the SSD ...........................................................61 C.2 Test method for the determination of the flow coefficient C v ........................................................61 Annex D (informative) Alternative test method for verification of the strength of the trip mechanism, valve seat and closing member....................................................................................63 D.1 Test method..........................................................................................................................................63 D.2 Test method for the determination of the dynamic factor C r . .........................................................63 D.3
Test method for a series of SSDs ......................................................................................................64
Annex E (informative) Sizing equation ............................................................................................................66 Annex F (informative) Inspection certificate ..................................................................................................67 Annex G (informative) Order specification .....................................................................................................69 G.1 General..................................................................................................................................................69 G.2 Minimum specifications ......................................................................................................................69 G.2.1 Details of construction ........................................................................................................................69 G.2.2 Dimensions...........................................................................................................................................69 G.2.3 Performance .........................................................................................................................................69 G.3 Optional specifications .......................................................................................................................70 Annex H (informative) Acceptance test ..........................................................................................................71 Annex I (informative) !Seat leakage (alternative requirement)". ...........................................................72 Annex J (normative) Materials .........................................................................................................................73 J.1 Steel materials for pressure containing parts and inner metallic partition walls .........................73 J.2 Metallic materials different from steel materials for pressure containing parts and inner metallic partition walls ........................................................................................................................79 J.3 Materials for fixtures, integral process and sensing lines, connectors and fasteners ................84 Annex K (informative) !Suitability of safety shut-off device for damp operating conditions ...............87 Annex L (informative) Glossary .......................................................................................................................88 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC ............................................................................................90 Bibliography ......................................................................................................................................................92
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Foreword This document (EN 14382:2005+A1:2009) has been prepared by Technical Committee CEN/TC 235 “Gas pressure regulators and associated safety devices for use in gas transmission and distribution”, the secretariat of which is held by UNI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2009, and conflicting national standards shall be withdrawn at the latest by September 2009. This document includes Amendment 1, approved by CEN on 2009-01-12. This document supersedes !EN 14382:2005". The start and finish of text introduced or altered by amendment is indicated in the text by tags ! ". This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 97/23/EC. For relationship with EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this document. Safety shut-off devices dealt with in this document are standard safety shut-off devices and, when used in pressure regulating stations complying with EN 12186 or EN 12279, they are considered as standard pressure equipment in accordance with Clause 3.1 of Art. 1 of Pressure Equipment Directive (PED). For standard safety shut-off devices used in pressure regulating stations complying with EN 12186 or EN 12279, Table ZA.1 given in Annex ZA includes all applicable Essential Requirements given in Annex I of PED !except the external corrosion resistance in case of environmental conditions where corrosion is likely to occur ". The normative Annex J of this document lists some suitable materials for pressure containing parts, inner metallic partition walls, fasteners and connectors. Other materials may be used when complying with the restrictions given in Table 5. !deleted text " !Continued" integrity of safety shut-off devices is assured by periodic functional checks. For periodic functional checks it is common to refer to national regulations/standards where existing or users/manufacturers practices.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
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1
Scope
!This document specifies constructional, functional, testing and marking requirements, sizing and documentation of gas safety shut-off devices used in the pressure regulating stations in accordance with EN 12186 or EN 12279: "
for inlet pressures up to 100 bar and nominal diameters up to DN 400;
for an operating temperature range from –20 °C to +60 °C,
which operate with fuel gases of the 1 st and 2nd family in accordance with EN 437 in transmission and distribution networks and also in commercial and industrial installations. "Gas safety shut-off devices" will hereafter be called "SSDs" except in titles. !For standard safety shut-off devices when used in pressure regulating stations complying with EN 12186 or EN 12279, Annex ZA lists all applicable Essential Requirements except the external corrosion resistance in case of environmental conditions where corrosion is likely to occur. " !This document considers the following classes/types of SSDs: "
temperature classes:
class 1: operating temperature range from –10 °C to 60 °C;
class 2: operating temperature range from –20 °C to 60 °C;
functional classes:
!class A: SSDs that close when damage to the pressure detector element occurs (applicable to overpressure SSDs only) or when external power fails and whose re-opening, after an intervention for overpressure, is possible only manually;
class B: SSDs that do not close when damage to the pressure detector element occurs and whose reopening, after an intervention for overpressure, is possible only manually;
SSDs types:
type IS: (integral strength type);
type DS: (differential strength type). "
SSDs complying with the requirements of this document may be declared as “in conformity with EN 14382“ and bear the mark “EN 14382”. The material and functional requirements specified in this document may be applied to SSDs which use thermal energy or the effects of electrical energy to trip the operation of the closing member. For these SSDs the operational parameters are not specified in this document. This document does not apply to:
SSDs upstream from/on/in domestic gas-consuming appliances which are installed downstream of domestic gas meters;
!SSDs incorporated into pressure-regulating devices used in service lines with volumetric flow rate 3 ≤ 200 m /h at normal conditions and inlet pressure ≤ 5 bar."
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2
Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including amendments) applies. !deleted text " !EN 287-1:1992, Approval testing of welders – Fusion welding – Part 1: St eel "
EN 334:2005, Gas pressure regulators for inlet pressures up to 100 bar !EN 473:2000", Non destructive testing – Qualification and certification of NDT personnel – General principles !deleted text " !EN 970:1997", Non-destructive examination of fusion welds – Visual examination !deleted text " !EN 1092-1:2007, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN designated – Part 1: Steel flanges
EN 1092-2:1999, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN designated – Part 2: Cast iron flanges EN 1092-3:2005, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN designated – Part 3: Copper alloy flanges EN 1092-4:2004, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, PN designated – Part 4: Aluminium alloy flanges " EN 1349, Industrial process control valves !EN 1418:1997", Welding personnel – Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials !deleted text " !EN 1759-1, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, Class-designated – Part 1: Steel flanges, NPS ½ to 24
EN 1759-3, Flanges and their joints – Circular flanges for pipes, valves, fittings and accessories, Class designated – Part 3: Copper alloy flanges EN 1759-4, Flanges and their joint – Circular flanges for pipes, valves, fittings and accessories, class designated – Part 4: Aluminium alloy flanges " EN 10045-1, Metallic materials – Charpy impact test – Part 1: Test method !EN 10204:2004", Metallic products – Types of inspection documents !EN 10226-1, Pipe threads where pressure tight joints are made on the threads – Part 1: Taper external threads and parallel internal threads – Dimensions, tolerances and designation
EN 10226-2, Pipe threads where pressure tight joints are made on the threads – Part 2: Taper external threads and taper internal threads – Dimensions, tolerances and designation "
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EN 12186, Gas supply systems – Gas pressure regulating stations for transmission and distribution – Functional requirements EN 12279, Gas supply systems – Gas pressure regulating installations on service lines – Functional requirements !EN 12516-1:2005, Industrial valves – Shell design strength – Part 1: Tabulation method for steel valve shells
EN 12516-2:2004, Industrial valves – Shell design strength – Part 2: Calculation method for steel valve shells EN 12516-4:2008, Industrial valves – Shell design strength – Part 4: Calculation method for valve shells in metallic materials other than steel " !deleted text "
EN 12627, Industrial valves – Butt welding ends for steel valves EN 13445-4, Unfired pressure vessels – Part 4: Fabrication EN 13906-1, Cylindrical helical springs made from round wire and bar – Calculation and design – Part 1: Compression springs EN 13906-2, Cylindrical helical springs made from round wire and bar – Calculation and design – Part 2: Extension springs EN 60534-1:1993, Industrial-process control valves – Part 1: Control valve terminology and general considerations (IEC 60534-1:1987) EN ISO 175:2000, Plastics – Methods of test for the determination of the effects of immersion in liquid chemicals (ISO 175:1999) !EN ISO 9606-2:2004, Qualification test of welders – Fusion welding – Part 2: Aluminium and aluminium alloys (ISO 9606-2:2004)
EN ISO 9606-3:1999, Qualification test of welders – Fusion welding – Part 3: Copper and copper alloys (ISO 9606-3:1999) EN ISO 9606-4:1999, Qualification test of welders – Fusion welding – Part 4: Nickel and nickel alloys (ISO 9606-4:1999) EN ISO 15607:2003, Specification and qualification of welding procedures for metallic materials – General rules (ISO 15607:2003) EN ISO 15609-1:2004, Specification and qualification of welding procedures for metallic materials – Welding procedure specification – Part 1: Arc welding (ISO 15609-1:2004) EN ISO 15610:2003, Specification and qualification of welding procedures for metallic materials – Qualification based on tested welding consumables (ISO 15610:2003) EN ISO 15611:2003, Specification and qualification of welding procedures for metallic materials – Qualification based on previous welding experience (ISO 15611:2003) EN ISO 15612:2004, Specification and qualification of welding procedures for metallic materials – Qualification by adoption of a standard welding procedure (ISO 15612:2004) EN ISO 15613:2004, Specification and qualification of welding procedures for metallic materials – Qualification based on pre-production welding test (ISO 15613:2004)
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EN ISO 15614-1:2004, Specification and qualification of welding procedures for metallic materials – Welding procedure test – Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 156141:2004) EN ISO 15614-2:2005, Specification and qualification of welding procedures for metallic materials – Welding procedure test – Part 2: Arc welding of aluminium and its alloys (ISO 15614-2 :2005) " EN ISO/IEC 17025:2000, General requirements for the competence of testing and calibration laboratories (ISO/IEC 17025:1999) ISO 7-1, Pipe threads where pressure tight joints are made on threads – Part 1: Dimensions, tolerances and designation ISO 1817, Rubber, vulcanized – Determination of the effect of liquids ISO 7005 (all parts), Metallic flanges ANSI/ASME B1.20.1:1983, Pipe threads, general purpose (inch) !deleted text "
MSS SP 55:1985, Quality standard for steel castings for valves, flanges and fittings and other piping components (Visual method)
3
Terms, definitions and symbols
!For the purposes of this document, the following terms, definitions and symbols apply. NOTE Annex L list all definitions and terms in alphabetic order for English language, the relevant translation in French and German language and the relevant sub clause of this clause."
3.1 !General terms and definition of type of safety devices" !deleted text "
3.1.1 safety shut-off device device whose function is to stay in the open position under normal operating conditions and to shut-off the gas flow automatically and completely when the monitored pressure exceeds the pre-set values !(over-pressure monitoring and/or under-pressure monitoring) " 3.1.2 direct acting shut-off device !SSD in which the pressure detector element is directly connected to the trip mechanism (see Figure 1) " 3.1.3 indirect acting shut-off device SSD in which the energy required to move the closing member or to operate the controller is supplied by an internal or external power supply (see Figures 2 and 3) 3.1.4 cut-off device SSD designed to shut-off the gas flow, which responds slower dynamically than a slam shut device when the monitored pressure exceeds the pre-set values EXAMPLE
SSD using actuator driven by pipeline gas or external power
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3.1.5 slam shut device SSD designed to quickly shut-off the gas flow when the monitored pressure exceeds the pre-set values EXAMPLE
Spring or weight loaded SSD
3.1.6 sensing point point from which the monitored variable is fed to the SSD 3.1.7 SSD size !deleted text " nominal size DN of the inlet connection in accordance with EN ISO 6708 !3.1.8 series of safety shut-off devices SSDs with the same design concept but differing only in size "
3.2 !Terms and definition of components of safety devices" 3.2.1 main components parts including normally: a controller, a trip mechanism, an actuator, a closing member and a relatching device permitting the manual opening of the SSD. All these parts are functionally connected (see Figures 1, 2 and 3) 3.2.1.1 closing member part which shuts off the gas flow completely 3.2.1.2 trip mechanism mechanism which releases the closing member when activated by the controller 3.2.1.3 actuator device activated by the trip mechanism which shuts the closing member 3.2.1.4 relatching device device which enables the complete opening of the SSD 3.2.1.5 body main pressure containing envelope which provides the fluid flow passageway and the pipe end connections 3.2.1.6 valve seat corresponding sealing surfaces within an SSD which make full contact only when the closing member is in the closed position 3.2.1.7 seat ring part assembled in a component of the SSD to provide a removable seat
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3.2.1.8 controller !device which includes:
a setting element to adjust the set value of the trip pressure;
a pressure detector element which has the function to detect the feedback of the monitored pressure (e.g. a diaphragm);
a unit which compares the set value of the trip pressure with the monitored pressure;
a system which gives the energy to operate the trip mechanism "
3.2.1.9 bypass device permitting manual equalization of pressure across a closed SSD 3.2.2 fixtures devices functionally connected to the main components of the SSD
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!
" Key 1
Bypass
6 Controller
2
Relatching device
7 Sensing line
3
Trip mechanism
8 Actuator
4
Breather line
9 Sensing point
5
Setting element
10 Closing member !11 Scheme 1a"
Figure 1 — Example of a direct acting safety shut-off device
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Key 1
Bypass
7 Sensing line
2
Actuator
8 External loading pressure line
3
Relatching device
9 Internal loading pressure line
4
Exhaust line
10 Breather/exhaust line
5
Trip mechanism
11 Sensing point
6
Controller
12 Closing member
Figure 2 — Example of an indirect acting shut-off device
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Key 1 Bypass
7 Sensing line
2
Actuator
8 External loading pressure line
3
Relatching device
9 Internal loading pressure line
4
Exhaust line
10 Breather/exhaust line
5
Trip mechanism
11 Sensing point
6
Controller
12 Closing member 13 Pressure reducer (is applicable)
Figure 3 — Example of an indirect acting shut-off device
!deleted text "
3.2.3 loading pressure line line connecting the controller and/or actuator to the internal or external power source 3.2.4 pressure containing parts parts whose failure to function would result in a release of the retained fuel gas to the atmosphere NOTE These include bodies, closing member, controllers, bonnets, blind flanges and pipes for process and sensing lines but exclude compression fittings, diaphragms, bolts and other fasteners.
3.2.5 inner metallic partition wall metallic wall that separates a chamber into two individual pressure-containing chambers at different pressures under normal operating conditions 3.2.6 sensing line line connecting the sensing point and the controller 3.2.7 exhaust line !line connecting the controller and/or actuator of the SSD to atmosphere for the safe exhausting of fuel gas in the event of failure of any part "
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3.2.8 breather line !line connecting the atmospheric side of the pressure detector element to atmosphere NOTE
In the event of a fault in the pressure detector element this line can become an exhaust line."
!deleted text "
3.3 !Terms, symbols and definitions related to the functional performance" 3.3.1 pressure all pressures specified in this standard are static gauge pressures NOTE
)
Pressure is expressed in bar 1 .
3.3.1.1 differential pressure ∆ p difference between two values of pressure at two different points 3.3.1.2 loading pressure pressure of the gas from the upstream pipeline or of the gas from an external source used as an energy source for the controller and/or actuator !deleted text "
3.3.2.1 monitored pressure pressure monitored and safeguarded by the SSD, normally the outlet pressure of the pressure regulating station/installation 3.3.2.2 disturbance variables variables affecting the functioning of the SSD EXAMPLES
!changes in flow rate;"
temperature changes;
mechanical impacts;
influence of moisture;
influence of gas conditioning agents;
dust, condensation or other foreign material;
dynamic force on closing member created by gas flow
1) 1 bar = 105 Pascal = 1 000 mbar = 10-1 MPa = 105 N/m2.
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3.3.2.3 trip pressure ! pdo (for over-pressure monitoring) pdu (for under-pressure monitoring) pressure value at which the closing member moves to closed position " !deleted text "
3.3.3
Possible values of all variables
3.3.3.1 actual value of the trip pressure ! pdio (for over-pressure monitoring) pdiu (for under-pressure monitoring) pressure value at which the closing member of an SSD starts to move " 3.3.3.2 maximum value highest value, which is specified by the index “max” added to the symbol of the variable:
to which any variable can be adjusted or to which it is limited;
any variable may reach during a series of measurements, or during a certain time period
3.3.3.3 minimum value lowest value, which is specified by the index “min“ added to the symbol of the variable:
to which any variable can be adjusted or to which it is limited;
any variable may reach during a series of measurements or during a certain time period
3.3.4
!Terms, symbols and definitions related to the set value of the trip pressure"
3.3.4.1 set point ! pdso (for over-pressure monitoring) pdsu (for under-pressure monitoring) nominal trip pressure value under specified conditions " 3.3.4.2 set range !W do (for over-pressure monitoring) W du (for under-pressure monitoring) whole range of set points which can be obtained with a SSD by adjustment and/or the replacement of some components (e.g. replacement of the setting mean, or pressure detector element) "
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3.3.4.3 specific set range !W dso (for over-pressure monitoring) W dsu (for under-pressure monitoring) whole range of set points which can be obtained with a SSD by adjustment and without replacement of any component" 3.3.5
!Terms, symbols and definitions related to the flow "
3.3.5.1 normal conditions absolute pressure of 1,013 bar and temperature of 0 °C (273,15 K). NOTE
For calculation purposes a value of 273 K is used in this document.
3.3.5.2 gas volume volume of gas at normal conditions NOTE
Gas volume isexpressed in m3.
3.3.5.3 volumetric flow rate Q volume of gas which flows through the SSD per unit time, at normal conditions NOTE
Volumetric flow rate is expressed in m3/h.
!deleted text " !3.3.6 Terms, symbols and definitions related to accuracy and some other performances"
3.3.6.1 trip pressure deviation !difference between the actual value of the trip pressure and the set point as a percentage of the set value (see Figure 4)" 3.3.6.2 accuracy group AG maximum permissible absolute value of trip pressure deviation (see Figure 4) 3.3.6.3 inlet operating pressure range !b " pu range of inlet operating pressure for which the SSD ensures a given accuracy group 3.3.6.4 response time t a time interval between attaining the permissible limit value of the trip pressure at the sensing point and complete closure of the closing member
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
3.3.6.5 relatching difference ∆ pw !minimum difference" between the set value of the trip pressure and the monitored pressure which is required for the correct resetting of the SSD !
"
Key 1
Set value of trip pressure (pdso)
2
Actual value of trip pressure (dio)
3
Trip pressure deviation
4
Accuracy group (AG)
5
Relatching difference (∆pw)
Figure 4 — Monitored pressure and trip pressure !3.3.6.6 pressure drop drop in pressure, at specified operating conditions, of gas passing through the SSD body "
3.4 !Terms, symbols and definitions related to the design and tests" !deleted text " !3.4.1 component operating pressure p gas pressure occurring in any part of a SSD during operation "
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
3.4.1.1 maximum component operating pressure pmax highest operating pressure at which a component of an SSD will continuously operate within specified conditions !3.4.2 inlet pressure pu
inlet pressure at which the SSD can continuously operate within specified conditions " !deleted text "
3.4.2.1 maximum inlet pressure pumax highest inlet pressure at which the SSD can continuously operate within specified conditions 3.4.3 maximum allowable pressure PS !maximum pressure for which the body, its inner metallic partition walls and some other pressure containing parts are designed in accordance with the strength requirements in this document " !3.4.4 specific maximum allowable pressure PSD pressure for which some pressure containing parts of differential strength SSDs are designed where PSD < PS" !deleted text " !deleted text "
3.4.5 nominal pressure numerical designation relating to pressure, which is a convenient round number for reference purposes in accordance with the relevant parts of ISO 7005 (some parts of these documents can be replaced by the equivalent documents when they are available. At the time of writing, this subject is dealt with in EN 1092-1, EN 1092-2, EN 1092-3, EN 1092-4, EN 1759-1, EN 1759-3 and EN 1759-4) NOTE
For the specific purpose of this document this term applies to flanges.
EXAMPLE
PN 16
3.4.6 test pressure !pressure applied to a section of the SSD for a limited period of time in order to prove certain characteristics" 3.4.7 limit pressure pl pressure at which yielding becomes apparent in any component of the SSD or its fixtures !deleted text "
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
3.4.8 safety factor !ratio of the limit pressure pl to the maximum allowable pressure PS or to specific maximum allowable pressure PSD applied to:
SSD body: Sb (only PS);
other pressure containing part of the SSD: S (PS or PSD)"
3.4.9 operating temperature range temperature range at which the SSD components and fixtures are capable of operating continuously !deleted text " !deleted text "
3.4.10 closing force F S force created by a spring, by a weight-piece or by pressure to operate the closing member !deleted text "
4
Construction requirements
4.1 Basic requirements 4.1.1
General
SSDs shall not have any continuous discharge of gas into the atmosphere, however, temporary discharges from fixtures may occur. !SSDs shall be so designed that external tightness and internal sealing meet the requirements of 5.2. If in the event of failure (e.g. of a diaphragm) leakage to atmosphere is possible, the breather shall be provided with, a threaded connection of at least DN 10 to enable an exhaust line to be connected 2." !Where there is the possibility of damage to external protrusions or other parts during transport and handling, the manual shall describe precautions to be taken to prevent the risk. "
The force required to operate the relatching device shall be:
≤ 250
N;
≤ 150
N when the relatching device needs more than 10 operations (e.g. for a cut-off device).
For cut-off devices the operating and maintenance manual shall specify whether a by-pass shall be provided and how this will be accomplished. !deleted text "
2 !For proper operation of the SSD any exhaust line should be designed in a such way to prevent the ingress of foreign
materials."
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
SSDs may be stand-alone devices or may be built into gas pressure regulators. After relatching, all functional units shall have returned to their starting position without impeding the closing function and the SSD shall be ready for operation. The handle of the relatching device may be detachable. Devices to lock the relatching device in the open position are not permitted. Where pipeline gas is utilized as a source of energy for indirect acting SSDs, the location on the pipeline of the loading pressure connection shall not affect the safety performance of the SSD. If applicable, this information shall be given in the operating manual. Pressure containing parts not intended to be dismantled during servicing, adjustment or conversion shall be sealed by means which will show evidence of interference (e.g. lacquer). !Pressure containing parts, including measuring and test points, which may be dismantled for servicing, adjustment or conversion, shall be made pressure tight by mechanical means (e.g. metal to metal joints, orings, gaskets). Jointing compounds, such as liquids and pastes, shall not be used. "
Jointing compounds, however, may be used for permanent assemblies and shall remain effective under normal operating conditions. 4.1.2 4.1.2.1
Types of shut-off devices Stand-alone shut-off devices
SSDs may be designed as independent units for separate installation. A stand-alone SSD comprises all the main components !(see 3.2.1)". 4.1.2.2
Shut-off devices integrated into a gas pressure regulator
SSDs shall be functionally independent from the components of the regulator and from other safety devices. !This requirement is met if the function of the SSD is not affected in the event of the failure and/or loss of functionality of one or more of the following components of the regulator or other safety devices: "
control/closing/relieving member;
seat ring;
actuator;
actuator casing;
controller;
sensing and process lines.
4.1.2.3
!Safety shut-off device with in-line gas pressure regulator
The system includes a regulator with the function of active regulator and an in-line SSD (in series). The SSD shall be installed directly upstream of the regulator and both devices shall control the pressure at the same location. The associated in-line regulator shall be functionally independent from the SSD.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
This requirement is met if: a) the function of the regulator is not affected in the event of the failure and/or loss of functionality of one or more of the following SSD components:
controller;
sensing and process lines;
and if: b) the function of the SSD is not affected in the event of the failure and/or loss of functionality and/or functionality of one or more of the following regulator components:
pilot (in case of pilot-controlled regulator);
sensing and process lines.
The motorization energy for regulator in case of pilot-controlled type, shall be taken downstream from the SSD." 4.1.3
End connections
End connections may be one of the following:
flanged connections according to the applicable parts of ISO 7005 (some parts of these documents can be replaced by the equivalent documents when they are available. At the time of writing, this subject is dealt with in EN 1092-1, EN 1092-2, EN 1092-3, EN 1092-4, EN 1759-1, EN 1759-3 and EN 1759-4);
flangeless type (e.g. wafer body);
!threaded connections in accordance with EN 10226-1 or EN 10226-2 for:
DN ≤ 50;
DN ≤ 80 and PS ≤ 16 bar;"
compression fittings for DN ≤ 50;
butt-weld connections in accordance with EN 12627.
4.1.4
Flange ratings
The PN ratings for flanges shall be selected from the following designations: )
6 - 10 - 16 - 20 - 25 - 40 - 50 - 110 3
!according to the relevant parts of ISO 7005 (some parts of these documents can be replaced by the equivalent documents when they are available). Flange ratings shall be in accordance with EN 1092-1, EN 1092-2, EN 1092-3, EN 1092-4, EN 1759-1, EN 1759-3 and EN 1759-4 ".
The underlined designations are preferred.
3)
The nominal pressure designations PN 20, PN 50 and PN 110 are equivalent to class ratings 150, 300 and 600 respectively.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
4.1.5
Nominal sizes and face-to-face dimensions
SSDs with flange connections should have the same nominal size at the inlet and outlet. The nominal sizes and face-to-face dimensions given in Table 1 are recommended. Alternatively, the nominal sizes and face-to-face dimensions ma y be taken from Table 2. Flangeless SSDs (SSDs that have no line flanges but are intended to be installed by clamping between pipe flanges) are permitted as an alternative. In this case SSDs should have the same nominal size at the inlet and outlet and face-to-face dimensions should be taken from Tables 3 or 4. The following SSDs are permitted:
flanged with different nominal inlet and outlet sizes;
those with face-to-face dimensions differing from those given in Tables 1 and 2.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Table 1 — Recommended face-to-face dimensions for flanged SSDs Nominal size
Nominal pressure PN 10/16/20 a
PN 25/40/50
PN 110
Limit deviations for face-to-face dimensions in mm
Face-to-face dimensions in mm 25
184
197
210
40
222
235
251
50
254
267
286
65
276 b
292 b
311 b
80
298
317
337
100
352
368
394
150
451
473
508
200
543
568
610
250
673
708
752
300
737
775
819
350
889
927
972
400
1 016
1 057
1 108
± 2
± 3
Source: Tables 1 and 2 of EN 60534-3-1:2000 (nominal pressure in accordance with the relevant parts of ISO 7005 – some parts of these documents can be replaced by the equivalent documents when they are available. At the time of writing, this subject is dealt with in EN 1092-1, EN 1092-2, EN 1092-3, EN 1092-4, EN 1759-1, EN 1759-3 and EN 1759-4). a
In some countries the group PN 10/16/20 also includes PN 6.
b
Face-to- face dimensions according to Table 1 of IEC 60534-3.
Table 2 — Alternative face-to face dimensions for flanged SSDs Nominal size
Nominal pressure
PN 10/16/25/40/50 a
Limit deviations for faceto-face dimensions in mm PN 110
Face-to-face dimensions in mm 25
160
230
40
200
260
50
230
300
65
290 b
340 b
80
310
380
100
350
430
150
480
550
200
600
650
250
730
775
300
850
900
400
1 100
1 150
± 2
± 3
Source: Table 2 o f EN 60534-3-1:2000 with addition of PN 50 and replacement of PN 100 by PN 110 (nominal pressure in accordance with the relevant parts of ISO 7005 – some parts of these document can be replaced by the equivalent documents when they are available. At the time of writing, this subject is dealt with in EN 1092-1, EN 1092-2, EN 1092-3, EN 1092-4, EN 1759-1, EN 1759-3 and EN 1759-4).
24
a
In some countries the group PN 10/16/25/40/50 also includes PN 6.
b
Face-to-face dimensions according to Table 2 of IEC 60534-3.
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Table 3 — Face-to-face dimensions for flangeless SSDs Nominal size
Face-to-face dimensions in mm
Limit deviation for face-to-face dimensions in mm
25
102
± 1,5
40
114
± 1,5
50
124
± 1,5
80
165
± 1,5
100
194
± 1,5
150
229
± 1,5
200
243
± 1,5
250
297
± 2,5
300
338
± 2,5
400
400
± 2,5
Source: EN 60534-3-2 (nominal pressure according to the relevant parts of ISO 7005 – some parts of these documents can be replaced by the equivalent documents when they are available. At the time of writing, this subject is dealt with in EN 1092-1, EN 1092-2, EN 1092-3, EN 1092-4, EN 1759-1, EN 1759-3 and EN 1759-4). NOTE 1
Nominal pressures: PN 10/16/20/25/40/50/110. In some countries this group also includes PN 6.
NOTE 2 Face-to-face dimensions do not include any allowances for gaskets to seal the joints between the SSD ends and the pipeline flanges.
Table 4 — Face-to-face dimensions for flangeless SSDs Nominal size
Face-to-face dimensions in mm for
Limit deviations for face-to-face dimensions in mm
PN 10/16/20/25/40/50 a
PN 110
25
77
86,5
± 1,5
40
77
86,5
± 1,5
50
77
86,5
± 1,5
80
94
104
± 1,5
100
114
133
± 1,5
150
140
175
± 1,5
200
171
205
± 1,5
250
203
240
± 2,5
300
240
280
± 2,5
400
320
350
± 2,5
NOTE 1 Face-to-face dimensions do not include any allowances for gaskets to seal the joints between the SSD end and the pipeline flanges. NOTE 2 Nominal pressure according to the relevant parts of ISO 7005 (some parts of these documents can be replaced by the equivalent documents when they are available. At the time of writing, this subject is dealt with in EN 1092-1, EN 1092-2, EN 1092-3, EN 1092-4, EN 1759-1, EN 1759-3 and EN 1759-4). a
In some countries the group PN 10/16/20/25/40/50 also includes PN 6.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
4.1.6
Sealing of the adjusting device
A means for sealing the adjusting device shall be pr ovided. If requested in the order specification the a djusting device shall be sealed. 4.1.7
Set range
Components may be replaced to cover the whole set range. In this case, the manufacturer shall specify the necessary procedure in the operating manual. 4.1.8
External visual Indication of the position of the closing member
!SSDs shall be fitted with an external visual device which clearly indicates whether the closing member is in the open or closed position. "
4.1.9
Springs
Springs shall not be overstressed under any operating conditions and there shall be sufficient free movement of the spring to allow satisfactory operation. The spring shall be designed such that buckling does not occur, in accordance to EN 13906-1 and EN 13906-2. 4.1.10 Parts transmitting actuating forces Parts transmitting actuating forces should be metallic and designed with a safety factor of permanent deformation.
≥
3 against
4.1.11 !Replaceable parts that can be affected by erosion or abrasion The seat ring shall be replaceable where erosion or abrasion can occur. "
4.2 Materials 4.2.1 4.2.1.1
Requirements for metallic materials Pressure containing parts and inner metallic partition walls
The pressure containing parts, including those that becomes pressure containing parts in the event of diaphragm or differential pressure seal failure and the inner metallic partition walls can be constructed of:
materials complying with the restrictions given in Table 5 and an established national or an international standard;
or materials given in Annex J.
The internal components of an SSD not subjected to differential pressure, may be constructed of either the materials given in Annex J or materials complying with the requirements given in Table 5, without taking into account the restrictions for pressures and nominal sizes, or of different materials provided they comply with the requirements of this document. !Material inspection documents" of pressure containing parts and inner metallic 4.2.1.2 partition walls !This sub-clause specifies the different types of inspection documents supplied to the purchaser, in accordance with the requirements of the order, for the delivery of components used for SSDs. "
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Pressure containing parts and inner metallic partition walls:
bodies used in the SSDs category II, III and IV according to Annex II of PED, shall be accompanied by a material !inspection certificate " type 3.2 in accordance with EN 10204. For these bodies when the material manufacturer has an appropriate quality-assurance system, certified by a competent body established within the EC and having undergone a specific assessment for materials, an !inspection certificate " type 3.1 in accordance with EN 10204 may be used;
bodies used in the SSDs category I according to Annex II of PED, shall be accompanied by an inspection document type 2.2 in accordance with EN 10204.
Pressure containing parts and inner metallic partition walls of other components used for SSDs with:
!PS ≤ 25 bar can be accompanied by a material test report at least type 2.2 in accordance with EN 10204;
PS > 25 bar shall be accompanied by a material inspection certificate at least type 3.1 in accordance with EN 10204."
4.2.1.3
Fasteners, integral process and sensing lines and connectors
Fasteners, integral process and sensing lines and connectors can be made of:
materials complying with the restrictions given in Table 5 and with a national or an international established standard;
or materials given in Annex J.
4.2.1.4
!Material inspection documents" of fasteners and compression fittings
!This sub-clause specifies the different types of inspection documents supplied to the purchaser, in accordance with the requirements of the order, for the delivery of components used for SSDs. "
Bolts, screws, studs, nuts and compression fittings used in the pressure containing parts of the SSDs shall bear the marking in accordance with the relevant standard and they shall be accompanied by !a material test report" type 2.2 in accordance with EN 10204.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Table 5 — Materials Restrictions Material Group
Safety shut-off device Properties Amin a
PSmax
(PS · DN b)max
DN bmax
%
bar
bar · mm
mm
Pressure containing parts and inner metallic partition walls Rolled and forged steel c
16
100
-
-
Cast steel c
15
100
-
-
Spheroidal graphite cast iron d
7
20
1 500
1000
15
50
5 000
300
Malleable cast iron
6
20
1 000
100
Copper-zinc wrought alloys
15
100
-
25
5
20
1 000
100
15
100
-
25
4
20
-
50
7
50
-
50
100
-
25
1,5
10
250
150
4
20
1 600
1 000
Copper-tin and copper-zinc cast alloys
Aluminium wrought alloys
Aluminium cast alloys
Integral process and sensing lines Copper
-
25
-
-
Steel
-
100
-
-
-
-
-
9
50
-
-
12
100
-
-
Connectors Steel
8 Fasteners
Steel for bolts, screw, studs
NOTE For castings the specified mechanical characteristics are those measured on machined test piece prepared from separately cast test samples in accordance with the relevant standard for the selected materials. a b
A = percentage elongation after fracture (according to the applicable standard relevant to the chosen material). For the bodies of pilots or fixtures this term shall refer to their inlet connections.
!c Bending rupture energy measured in accordance with EN 10045-1 shall be not less than 27 J as average of three test pieces with
minimum individual of 20 J at minimum operating temperature (-10 °C or -20 °C)." d
Bending rupture energy measured in accordance with EN 10045-1 shall be not less than 12 J as an average of three test pieces and no less than 9 J as a minimum individual value at a temperature of -20 °C for PS > 25 bar when used in SSD class 2.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
4.2.1.5
Manufacturing
The manufacturer shall state the selected material standards in the relevant documentation (see 8.1.1). !Fabrication welds in all pressure containing parts shall be made using qualified welding procedures in accordance with applicable EN ISO 15607, EN ISO 15609-1, EN ISO 15610, EN ISO 15611, EN ISO 15612, EN ISO 15613, EN ISO 15614-1 and EN ISO 15614-2 and by qualified welders or welding operators according to applicable EN ISO 9606-2, EN ISO 9606-3, EN ISO 9606-4, EN 287-1 and EN 1418. "
In addition, for fabrication welds to make bodies, blind flanges, bonnets and actuator casings:
only full penetration welds shall be used;
weld fabrication and heat-treatment shall comply with EN 13445-4.
These additional requirements are not applicable to seal welding. For all pressure containing parts and inner metallic partition walls, the manufacturer shall identify the material throughout the production from receipt up to the final routine tests by markings or labelling. 4.2.1.6
Non destructive testing (NDT)
Steel bodies shall be non-destructively tested in accordance with Tables 6 and 7.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Table 6 — Non destructive testing ! Type of non destructive testing Volumetric Radiographic r o / d n a d e e g n a i r m e a v x o c e f e o b t o n t e t s x n e o i t c e S
Steel castings
Ultrasonic
EN 12516-1:2005, 10.3.2
Visual
Magnetic particle
Liquid penetrant
Accessible surfaces EN 12516-1:2005, 10.3.3
Forgings, bars, plates and tubular products
EN 12516-1:2005, 10.4 and 10.5
Fabrication welds
According to E and F in Table 7
NDT procedures and acceptance criteria for castings, forgings and their fusion weld repairs
Surface
EN 125161:2005, Annex B
EN 125161:2005, Annex E
Not applicable
Accessible surfaces
MSS SP 55:1985 a and EN 970 b
According to B in Table 7
EN 125161:2005, Annex C
EN 125161:2005, Annex D
NDT procedures and EN 12516EN 12516acceptance criteria for 1:2005, 10.6 1:2005, 10.6 EN 970 b fabrication welds, including and Annex B and Annex E their repairs s t l n Examinations shall be performed on the material after heat treatment required by the material or welding, a r e either before or after the finish machining at the option of the manufacturer. e m e n i e r Accessible surfaces in case of surface examination include exterior and interior surfaces but not threads, G u q drilled or threaded holes etc. e r a
This document is applicable only to steel castings.
b
This document is applicable only to fusion weld repairs.
NOTE
EN 12516-1 is equivalent to ASME B16.34:1996 mentioned in the previous edition of this document.
"
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Table 7 — Minimum inspection sample pmax
DN < 100
Castings
100
A+B
≥ 100
≥ 150
≥ 200
< 150
< 200
< 250
A+C
A+C
A
< 50
Full penetration fabrication welds Partial penetration fabrication welds
100 50 ≤ pmax < 100
A+D
A + B
50 ≤ pmax < 100
Forgings, bars, plates and tubular products
≥ 250
/
C
C
D
/
> 16
A + F
5 < pmax ≤ 16
A + E
> 16
A + B
A
is the visual examination of 100 % of the production batch.
B
is the magnetic particle or liquid penetrant examination of 100 % of the production batch.
C
is the volumetric examination of 10 % of the production batch, selected on random basis.
D
is the volumetric examination of 20 % of the production batch, selected on random basis.
E is the volumetric examination of 10 % of the circumferential, corner and nozzle seams of the production batch, selected on random basis, and 100 % of the longitudinal seams of the production batch. F is the volumetric examination of 20 % of the circumferential, corner and nozzle seams of the production batch, selected on random basis, and 100 % of the longitudinal seams of the production batch. NOTE A production batch consists of castings or forgings from the same melt and having the same heat treatment or welds made by the same process or welder or welding operator. An inspection sample is a percentage of the production batch.
In the case of random inspection, if a casting, forging or weld does not conform to the acceptance criteria a further inspection sample of twice the original sample size from the same production batch shall be examined. If one of these castings, forgings, or welds fails, the examination shall be extended to all castings, forgings, or welds in the production batch. Any casting, forging, or weld that does not conform to the acceptance criteria shall be repaired according to an applicable procedure and then re-examined. The NDTs shall be carried out by qualified personnel in accordance EN 473 or other equivalent standards. 4.2.2
Requirements for elastomers (including vulcanized rubber)
Elastomers shall comply with suitable requirements (at the time of writing this subject is under study in WI 00235009 – prEN 13787 rev.). 4.2.3
Requirements for non metallic materials different from those in 4.2.2
Functional non metallic parts in contact with the gas shall be chemically resistant to the fuel gases listed in Clause 1 and to the additive substances normally used for odorization and conditioning of gases. Furthermore, these materials shall be resistant to the permissible impurities in the gas.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
!The resistance to liquids of functional non metallic parts shall meet the requirements in Table 8. "
After immersion for one week at 23 °C ± 2 °C in test liquid A (100 % n-pentane) as specified in ISO 1817, followed by drying in an oven at 70 °C ± 2 °C, the change in mass when determined by the method specified in 5.4 of EN ISO 175:2000 shall comply the requirements in Table 8. Table 8 – Requirements for non metallic materials different from those in 4.2.2 Property
Determination of changes in mass
Requirements
Maximum change in mass after one week at 23 °C ± 2 °C
EN ISO 175
±5%
Maximum change in mass after drying in an oven at 70 °C ± 2 °C
EN ISO 175
+5 % /-2 %
4.3 Strength of housings !deleted text "
4.3.1
!Body and its inner metallic partition walls"
The limit pressure pl (determined or calculated in accordance with 7.3), maximum allowable pressure PS and maximum inlet pressure pumax shall be as follows: pl ≥ Sb × PS ≥ Sb × pumax 4.3.2
Flanges
!The maximum allowable operating pressure for flanges in accordance to the relevant parts of ISO 7005 shall not be less than maximum allowable pressure PS (some parts of these documents can be replaced by the equivalent documents when they are available). Flanges shall be in accordance with EN 1092-1, EN 1092-2, EN 1092-3, EN 1092-4, EN 1759-1, EN 1759-3 and EN 1759-4. "
4.3.3 4.3.3.1
!Other pressure containing parts
General
The other pressure containing parts are classified in the following three groups: I)
parts that are subjected to inlet pressure under normal operating conditions and that are designed to withstand a maximum allowable pressure equal to PS, e.g. specific pressure containing parts of SSD, controller as per Figure 2;
II) parts that are connected to the body as a result of a failure conditions (e.g. casing of controller as per Figure 1) and that are either designed to withstand a maximum allowable pressure equal to PS or that are designed to withstand a specific maximum allowable pressure of PSD which is lower than PS and with additional protective measures; III) parts that can never be subjected to inlet pressure even in the case of failure conditions and that are designed to withstand a maximum allowable pressure PS or a specific maximum allowable pressure PSD which is lower than PS, e.g. controller as per scheme 1a of Figure 1).
32
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Pressure containing parts group I) For this group the limit pressure pl , the maximum allowable pressure PS and the maximum inlet pressure pumax shall comply with the following requirements: pI ≥ S × PS ≥ S × pmax Pressure containing parts group II) For this group the limit pressure pl, the maximum allowable pressure PS and the maximum inlet pressure pumax , shall comply with the following requirements: pI ≥ S × PS
≥
S × pumax
As alternative solution, pressure containing parts of the group II) may be protected against exceeding their allowable limits of pressure by an appropriate design (specific safety accessory e.g. a relief valve, vent tapping, bleeding through sensing / process lines and/or limiting of the flowing gas by appropriate clearances between movable and fixed parts). In this case, it is necessary to consider also the working conditions with the downstream isolation valve of the installation in the closed position. In this case, the limit pressure pl of the concerned pressure containing parts, the specific maximum allowable pressure PSD and the maximum pressure pmax reached in the event of a failure, shall comply with the following requirements: pl ≥ S × PSD ≥ S × pmax The set point of the specific safety accessory shall be adjusted in such a way to limit the pressure to the relevant specific maximum allowable pressure PSD. Appropriate instructions on this subject shall be included in the operating and maintenance manual. Pressure containing parts group III) Where the parts are designed to withstand PS, the limit pressure pl, the maximum allowable pressure PS and the maximum inlet pressure pumax , shall comply with the following requirements: P l ≥ S × PS ≥ S × pumax Where the parts are designed to withstand PSD, the limit pressure pl, the specific maximum allowable pressure PSD and the maximum inlet pressure pmax reached in the event of a failure, shall comply with the following requirements: pl ≥ S × PSD ≥ S × pmax In above last case with specific maximum allowable pressure PSD, the markings shall include also the maximum component operating pressure pmax and the specific maximum allowable pressure PSD as detailed in Clause 9. 4.3.3.2
Integral strength safety shut-off devices
SSDs classified as integral strength SSDs shall include only pressure containing parts designed to withstand the maximum allowable pressure PS. For these types of SSDs the marking shall include the symbol “IS“. On request, this symbol shall be marked also on the body.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
4.3.3.3
Differential strength safety shut-off devices
SSDs classified as differential strength SSDs include some pressure containing parts designed to withstand the specific maximum allowable pressure PSD where PSD < PS. For these type of SSDs the marking shall include the symbol “DS“. On request, this symbol shall be marked also on the body. " 4.3.4
Inner metallic partition walls
!Where a chamber in the SSD is separated into individual pressure containing chambers by a metallic partition wall, the partition wall shall be designed taking into account the maximum differential pressure. " The following requirement shall be complied with:
pl ≥ S × ∆ pmax 4.3.5
Minimum values of safety factor
The values listed in Table 9 shall be used to limit the stress in the walls of pressure containing parts and inner metallic partition walls at the maximum allowable pressure. The values of the safety factors applicable to diaphragms when they have both the function of pressure containing parts and inner metallic partition wall are those detailed in 7.3.2. Table 9 — Minimum values of safety factor Group of materials
Minimum value of safety factor
S
34
For parts of the body stressed by forces from pipelines only Sb
Rolled and forged steel
1,7
2,13
Cast steel
2,0
2,5
Spheroidal graphite cast iron and malleable cast iron
2,5
3,13
Copper-zinc wrought alloys aluminium wrought alloys
and
2,0
2,5
Copper-tin cast alloys and copperzinc cast alloys
2,5
3,13
Aluminium cast alloys Amin 4 %
2,5
3,13
Aluminium cast alloys Amin 1,5 %
3,2
4,0
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
4.3.6
Welded joint coefficient
!For welded joints both in pressure containing parts and into inner metallic partition walls, the joint
coefficient shall not exceed the following values:
for welded joints subject to 100 % NDT: 1;
for welded joints subject to random NDT: 0,85;
for welded joints not subjected to NDT other than visual inspection: 0,7. "
5
Functional requirements
5.1 General 5.1.1
Shutting-off and opening
The shutting-off of the gas flow shall be automatic and shall not be interruptible until the closed position of the closing member has been reached. !The opening of SSDs shall only be possible by manual operation. "
5.1.2
Mounting position
SSDs within the scope of this document shall function in any mounting position specified by the manufacturer, ± 5°. 5.1.3
Bypass
If an internal bypass is fitted for the purpose of pressure equalization it shall close safely and automatically before or during tripping. 5.1.4
Ice formation
If requested in the order specification, the SSD shall be type-tested in accordance with the customer requirements, for example in accordance with Annex A. 5.1.5
Fail-close conditions
!SSDs of class A shall fail closed in the following cases:
damage to the pressure detector element (e.g. diaphragm);
failure of the external power supply unless a backup system is provided.
NOTE
5.1.6
Failure of a bellows or pressure detector element piston-type, need not be considered."
Pressure drop
When the body of the SSD is not a full bore ball valve type (see ISO 5752), the pressure drop in relation to the operating conditions shall be specified by the manufacturer if required in the order specification. For SSDs with straight full bore bodies or similar, the pressure drop calculated for the pipework shall include the face-to-face dimension of the valve.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
For SSDs incorporated in a regulator the calculation of pressure drop may be carried out by the reciprocal of the formulae (3) or (5) in EN 334:2005. For stand-alone SSDs the calculation of pressure drop may be carried out by the formula as detailed in Annex C. 5.1.7
!Surveillance and maintenance
SSDs of Class A and B require suitable surveillance checks and maintenance, particularly Class B, to guard against premature and/or unnoticed failure of the pressure detector element. In the case of SSDs of Class B the manufacturer shall draw the attention of the user to the residual risks associated with the pressure detector element. The notice concerning the residual risks shall be included in the documentation (8.2.3). "
5.2 Shell strength, external tightness and internal sealing 5.2.1
Shell strength
Pressure containing parts subjected to the test described in 7.5 shall show no visible leakage and no permanent deformations exceeding 0,2 % or 0,1 mm, whichever is greater. The percentage of the permanent deformation is calculated as:
100 ×
l − l 0 l
where l 0 is the distance between any two points on a pressure containing part before applying the test pressure; l 5.2.2
is the distance between the same points after releasing the test pressure. External tightness
The pressure containing parts and all connecting joints shall be leak-proof when tested in accordance with 7.7. 5.2.3
Internal sealing
For slam shut device: the requirements of internal sealing are met when:
bubble tight for a time of 5 s;
leakage is no higher than the value given in Table 14. These values are to be used both in the test at ambient temperature and the tests at limit temperatures.
Recognised alternative detection methods may be used for checking the internal leakage (e.g. electronic device). For such methods the equivalence of the above requirements shall be demonstrated. The accumulated internal leakage from internal walls, the closing member in its closed position, any bypass and connecting joints shall not exceed the values shown in Table 14 when tested in accordance with 7.8.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
For cut-off devices: the leakage class in accordance with EN 1349 shall be established as specified in the order specification.
5.3 Accuracy group The trip pressure deviation for an SSD shall conform to an accuracy group of Table 10. Table 10 — Specified accuracy groups Accuracy group
Permissible deviation
AG 1
±
1 % a
AG 2,5
±
2,5 % a
±
5 % a
AG 5 AG 10 AG 20 AG 30
± 10
% a
± 20
%b
± 30
%b
a
Or 1 mbar, whichever is greater.
b
For set values ≤ 200 mbar only.
An SSD type can conform to different accuracy groups as a function of the set range !W do and W du" or of the inlet operating pressure range !bpu". At the lower limit temperature the perm issible deviation for the declared accuracy group m ay move to a less stringent group as detailed in 7.9.3.
5.4 Response time The response time t a shall be:
for slam shut devices: ≤ 2 s;
for cut-off devices ≤ 0,08 DN s for DN ≤ 250 and ≤ 0,06 DN s for DN > 250.
For cut-off devices lower response times may be specified in the order specification. Adjustable response time may be requested in the order specification.
5.5 Relatching difference and unlatching 5.5.1
Relatching difference
The relatching difference ∆ pw shall be measured in accordance with !7.11". 5.5.2
Unlatching under mechanical impact
When subjected to the test in accordance with 7.11 no unlatching of the SSD shall occur.
37
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
5.6 Closing force When tested in accordance with 7.12, the closing force shall ensure closing of the closing member by a sufficient safety factor under all operating conditions. In the case of closing springs, appropriate measures against breakage shall be considered as those detailed in 4.1.9. The closing forces shall correspond to the following: open position:
F s ≥ 5 × R ± f × S
±
f × W + f × D
closed position:
F s
≥
2,5 × R ± f × S ± f × W
where F S is the closing force; R
is the friction force, (non static friction);
S
is the unbalanced load from static pressure;
W is the weight of the moving parts; D
is the dynamic force on the closing member from the mass flowing through the SSD;
f = 1,1 where the force opposes the closing of the closing member; f = 0,9 where the force assists the closing of the closing member. The addition (+) is applied when the force opposes the closing of the closing member and the subtraction (-) when the force assists the closing of the closing member. The dynamic force (D) is considered zero if it assists the closing of the closing member. When there is any torque developed in moving parts by the flowing mass it shall be considered when calculating F S. Both formulae shall be verified at the most critical operating conditions in the most critical mounting position.
5.7 Endurance and accelerated ageing When tested in accordance with 7.13 the SSD shall meet the tightness requirements in accordance with 5.2.2 and 5.2.3 and the set pressure deviations shall remain within its AG.
5.8 Strength of the trip mechanism, valve seat and closing member against the dynamic impact of flowing gas This requirement shall be applied to SSDs where there is a dynamic impact on the closing member in its fully open position. After testing in accordance with 7.15 the SSD shall m eet the internal sealing requirements.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
5.9 Flow coefficient When the SSD is incorporated in a regulator the flow coefficients in accordance EN 334 are used. For stand-alone SSDs, a flow coefficient in accordance with 7.9.5 may be used.
5.10 Final visual inspection In the type test specifically after the tests 7.5 up to and including 7.15 and those in 7.4 and in Annex A when applicable, the SSD shall show no undue wear, !bending", corrosion, damage or other defects which may affect its long term performance.
6
Testing
6.1 General Clause 6 provides guidance on the procedure that may be used when a certification of compliance with the requirements of this document is required. The sub-clauses in 6 !deleted text " may be applied also to the conformity assessment to the PED.
6.2 Tests Table 11 gives an overview of the different types of tests and correlates them to the requirements and test methods detailed in Clauses 4, 5 and 7. The requirements in this chapter shall be followed when compliance evaluation with this document is requested. Where compliance evaluation to this document is finalized with positive result, the SSD can bear as marking the number of this document.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Table 11 — Summary of tests and requirements Test schedule T
M
Requirements S
Clause
Test method Title
Clause
Constructional tests A
A
A
4.1
Dimensional check and visual inspection
7.1
A
A
A
4.2
Materials check
7.2
A
4.3
Verification of the strength of pressure pressure containing parts and inner metallic partition walls
7.3
A
4.1.10
Verification of the strength of parts transmitting transmitting actuating forces
7.4
Functional tests A
A
A
5.2.1
Shell and inner metallic partition walls strength strength test
7.5
A
A
A
5.2.2
External tightness test
7.7
A
A
A
5.2.3
Internal sealing test
7.8
A
A a
Aa
5.3
Test at ambient temperature
7.9.2
A
5.3
Test at the limit temperatures temperatures -20 °C or -10 °C or 60 °C
7.9.3
A
5.3
Verification of the upper limit of highest set set range
7.9.4
5.4
Response time
7.10
A
5.5
Relatching difference and unlatching
7.11
A
5.6
Closing force
7.12
A
5.7
Endurance and accelerated ageing ageing
7.13
A
5.8
Verification of the strength of the trip mechanism, mechanism, valve seat and closing member against dynamic impact b
7.15
A
5.9
Determination of the flow coefficient c
7.9.5
A
5.10
Final visual inspection after type type test
7.16.1
Final visual inspection after routine tests tests and production surveillance
7.16.2
A
A
A
A
7.16.2
A = Applicable S = Production surveillance M = Routine tests T = Type test !a Test: generally as 7.9.2 but only at ambient temperature, 6 consecutive operations for test S and 2 consecutive operations for
test M. The set range or the specific set range or the trip pressure in accordance to order specifications or at the manufacturer’s discretion when not otherwise specified." b
This test shall be carried carried out on SSDs only if there there is a dynamic dynamic impact impact on the closure closure member in its fully fully open position. position.
c
For SSDs SSDs with with straight straight full bore bodies bodies or similar, this test test is not applicable. applicable.
6.3 Type test Those tests (see Table 11) carried out to establish the performance classification of the SSD or the series of SSDs. These include verification of the documentation listed in 8.1.1.
40
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
When changes are made to the design of an SSD or a series of SSDs in such a manner as to affect the above tests, the manufacturer shall inform the parties involved, if any, in the compliance evaluation to this document.
6.4 Selection of test samples The number and types of SSD to be subjected to type test shall be selected according to the following requirements:
at least least one SSD for each type type of fixture and controller;
at least two sizes (nominal diameter DN);
at least one SSD for each each accuracy group (AG) !deleted text ".
If the same SSD can be used as a stand-alone or combined device it will be tested only once.
6.5 Routine tests Those tests (see Table 11) carried out on each SSD by the manufacturer during the production process. The tests verify that materials, dimensions, external conditions and accuracy groups remain in compliance with the results of the type test. Routine tests for integrated pressure regulators, if any, are detailed in EN 334.
6.6 Production surveillance Those tests and verifications (see Table 11) carried out in order to confirm continuing compliance with this document. The tests and verifications include additionally:
verification of routine tests records;
verification of drawings and material certificates.
7
Test and verification methods
7.1 Dimensional check and visual inspection The actions to assess:
the dimensional compliance of pressure containing parts with the applicable drawings;
the compliance of the SSD construction with the relevant assembly drawing and the construction requirements of this document.
7.2 Materials check The actions to assess the compliance of the materials used or prescribed with the requirements in 4.2. The verification of the materials used shall be carried out by the review of the material certificates. The verification of the materials prescribed shall be carried out by the review of the list of parts.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
7.3 Verification of the strength of pressure containing parts and i nner metallic partition walls 7.3.1
Strength calculation method
Verification is made by proving the compliance of the actual safety factors with those specified in 4.3.5 and the compliance of minimum allowable thicknesses shown in drawings with values specified in the strength calculations. Strength calculation !shall" be carried out according to EN 12516-2 and !EN 12516-4". 7.3.2
Experimental design method
Verification is made by proving the compliance of the actual safety factors with those specified in 4.3.5 taking into account the minimum allowable thicknesses shown on drawings and the minimum proof stress (yielding) for selected material. Actual safety factors are obtained through one of the following two wa ys:
hydrostatic pressure test until the first sign of yielding or failure becomes apparent in any component and verification that the limit pressure p pressure pl at which the first sign of yielding or failure becomes apparent is:
pl
pl
≥ PS × S b ×
≥
PS × S ×
sry smin
sry
×
×
smin
R p 0, 2
r
R p 0, 2
min
R p 0, 2
r
R p 0, 2
for the body only;
for other components;
min
hydrostatic pressure test and verification that that permanent deformations do not exceed the values stated in 5.2.1, however up to the following test pressures:
0,9 × PS × S b ×
0,9 × PS × S ×
srw sw
srw sw
×
×
R p 0, 2
r
R p 0, 2
min
R p 0, 2
r
R p 0, 2
for the body only;
for other components;
min
where smin
is the minimum design wall thickness at the point where the first sign of yielding occurs in mm;
sry
is the measured wall thickness of test sample at the point where the first sign of yielding occurs in mm;
|R p0,2 |min
is the minimum proof stress (yielding) for selected material according to relevant document in N/mm 2;
|R p0,2 |r
is the measured proof stress (yielding) for the material of the test sample according to relevant document in N/mm 2;
42
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
sw
is the minimum design wall thickness for the weakest point in mm;
srw
is the measured wall thickness of test sample for the weakest point in mm.
The weakest point can be located by technical evaluation or via measurements (strain gauge etc.). The test is carried out in such a manner that deformations of the test sample in all directions are possible. There shall be no additional stresses due to bending, torque or tension. Forces from fastening systems shall be similar to those experienced under normal installation conditions. SSD bodies and pressure containing parts manufactured from different materials may be pressure tested separately. !Special high strength clamping bolts, nuts and gaskets (between individual pressure containing parts) may be used for hydrostatic testing. " !For the component with the specific maximum allowable pressure PSD, in the above two formulae (not in those referred to body) replace the symbol “PS” with the symbol “PSD”. "
Diaphragms used as pressure containing parts in chambers subjected, or that can be subjected to a maximum differential pressure ∆ pmax shall withstand a test pressure (in bar) of at least:
0,3 bar
if ∆ pmax < 0,15 bar;
2 ∆ pmax
if 0,15 bar
1,5 ∆ pmax but at least 10 bar
if ∆ pmax ≥ 5 bar.
≤ ∆ pmax < 5
bar;
7.4 Verification of the strength of parts transmitting actuating forces Verification is made by proving the compliance of the actual safety factors with those specified in 4.1.10 and the compliance of dimensions shown on drawings with values specified in the strength calculations. Alternatively, verification may be made by an actual test.
7.5 Shell and inner metallic partition walls strength test Pressure containing parts, those that become pressure containing parts in case of a diaphragm or differential pressure seal failure and inner metallic partition walls shall be pressure tested. The test is carried out with water at ambient temperature at a pressure according to the values of Table 12 for three minutes. The criteria of 5.2.1 shall be met. The test is carried out in such a manner that deformations of the SSD in all directions are possible. There shall be no additional stresses due to bending, torque or tension. Forces from fastening systems shall be similar to those experienced under normal installation conditions at least during the type test. The test may be carried out without trim (i.e. the internal parts that are in flowing contact with the gases). The test may also be carried out with air or nitrogen, if the necessary safety measures are taken. Chambers separated by diaphragms shall be pressurized on both sides of the diaphragm at equal pressure.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Table 12 — Pressure values for the shell strength test ! Chambers with the maximum allowable pressure PS
Chambers with specific maximum allowable pressure PSD
Test pressures 1,5 PS but at least PS + 2 bar
1,5 PSD but at least PSD + 2 bar
"
7.6 Alternative shell and inner metallic walls strength test Hydrostatic pressure tests as detailed in 7.5 can be replaced by other tests (e.g. pneumatic test) whose reliability shall be demonstrated. For tests other than the hydrostatic pressure test, additional safety measures, when appropriate, such as non-destructive tests or other methods of equivalent validity, shall be applied before those tests are carried out.
7.7 External tightness test 7.7.1
External tightness test of metallic housing
The assembled SSD and its fixtures are pneumatically tested to assess compliance with the requirements of 5.2.2. The test is carried out at ambient temperature with air or gas at the test pressure specified in Table 13. This test shall be carried out on a strength-tested SSD for at least:
15 min in the type test,
1 min in the routine tests and in the production surveillance.
The result of test is satisfactory if one of the following conditions is met:
bubble tight for a time of 5 s. This test may be carried out by covering the SSD with a foaming liquid, by immersing the SSD into a tank of water or by other equivalent methods;
external leakage not higher than the values listed in Table 14 only for cut-off devices.
The test pressures in Table 13 do not apply to any chambers bounded on at least one side by a diaphragm even if they are subjected to gas pressure under normal operating conditions. The test is carried out in such a manner that deformations of the SSD in all directions are possible. There shall be no additional stresses due to bending, torque or tension. Forces from fastening systems shall be similar to those experienced under normal installation conditions at least during the type test. Recognized alternative detection methods may be used for checking leakage (e.g. electronic device). For such methods the equivalence to the above requirements shall be demonstrated.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Table 13 — Pressure values in the external tightness test !
Chambers with the maximum allowable pressure PS Chamber of controller
Chambers with specific maximum allowable pressure PSD
Other chambers Test pressures
1,2 pdso,max, but at least 0,5 PS
1,1 PS
1,1 PSD
"
Table 14 — Maximum external and internal leakage rates Air leakage rate in cm3/h a
Nominal size DN
a b
7.7.2
external
internal b
25
40
15
40 to 80
60
25
100 to 150
100
40
200 to 250
150
60
300 to 350
200
100
400
400
300
At normal conditions. In case of specific requirement in the order specification, see Annex I (applicable only to cut-off devices).
External tightness test of chambers bounded on at least one side by a diaphragm
Such chambers shall be pneumatically tested at a test pressure (in bar) equal to at least:
0,2 bar
if ∆ pmax < 0,15 bar;
1,33 ∆ pmax
if 0,15 bar
1,1 ∆ pmax but at least 6,65 bar
if ∆ pmax ≥ 5 bar.
≤ ∆ pmax < 5
bar;
Test method and acceptance criteria in accordance with 7.7.1.
45
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
7.8 Internal sealing test !deleted text "
The internal sealing test is carried out at ambient temperature with two different test pressures of 0,1 bar and 1,1 PS upstream of the closing member and atmospheric pressure downstream of the assembled SSD and its fixtures to assess compliance with the requirements of 5.2.3. This test may be carried out before or after the functional tests specified in 7.9.2. SSDs built into regulators are tested with the regulator in the open position. The test method to measure the leakage class, where applicable, shall be in accordance with EN 1349. !deleted text "
7.9 Accuracy group 7.9.1
General conditions
The tests may be carried out with either air or gas. Wherever necessary measured flow rates are converted into values that are related to air at normal conditions. Pressure measurement devices shall have an accuracy of at least 0,25 AG. Tests shall be carried out at ambient temperature. SSDs shall be tested in the mounting position specified by the manufacturer. The external sensing and loading pressure lines shall be located on the pipeline according to the prescription of the manufacturer. !deleted text "
The test is carried out in a test rig (equivalent to !Figure 5") under the following operating conditions:
the body of the SSD is pressurized from both ends;
the controller of the SSD is pressurized with a variable pressure representing the monitored pressure. The rate of the pressure change is kept constant;
the whole unit is installed in a chamber with a controlled temperature between –10 °C (or –20 °C) and +60 °C for tests at limit temperatures.
The accuracy groups for overpressure protection and underpressure protection, if applicable, are determined separately. 7.9.2
Test at ambient temperature
Test method: for each specified accuracy group (AG) and relevant:
maximum inlet pressure pemax ,
set range;
a) ensure that the body is at atmospheric pressure; b) adjust the trip pressure to the lower limit of the set range;
46
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
!
c)
with the SSD in the open position, starting from approximately 80 % of the selected trip pressure, increase the monitored pressure with a pressure change rate not greater than 1,5 % of the selected trip pressure per second until closure of the SSD occurs; "
d) repeat test c) five times; the set value is the arithmetic mean of the six actual values; the routine tests are repeated once only and the set value is the arithmetic mean of the two actual values; e) without further adjustment repeat the tests !c)" to d) with the body pressurized to the maximum inlet pressure ( pumax); f)
the set point is the arithmetic mean of the two set values calculated in d) and e).
The test method for underpressure protection is similar to that specified above; the starting pressure for operation c) shall be 120 % of the selected trip pressure. The test requirements are met if all the values of the trip pressure in c), d) and e) are within:
p s × 1 ± 7.9.3
AG
100
Test at the limit temperatures –20 °C or –10 °C and 60 °C
The tests are carried out in a temperature controlled chamber, at the lowest limits of (-20 (-10 ± 2) °C with a dry test medium (dew point ≤ -25 °C) !and at" (60 ± 2) °C.
±
2) °C or
There shall be no adjustment of the trip pressure between the test at ambient temperature (7.9.2) and this test. Test method: a) pressurize the body of SSD in the open position and maintain the inlet pressure at 0,1 bar; b) adjust the temperature of the test chamber to the limit value; the test may commence when the temperature becomes uniform in all parts of the SSD with a tolerance of ± 2 °C; c)
starting from approximately 80 % of the selected trip pressure, increase the monitored pressure at a rate of change not greater than 1,5 % of the selected trip pressure per second until closure of the SSD occurs;
d) verify the internal sealing; e) the test method for underpressure protection is similar to that specified above; the starting pressure for operations c) shall be 120 % of the selected trip pressure. The test requirements are met if the internal sealing complies with the requirement in 5.2.3 and the value of the trip pressure in c) corresponds to the specified accuracy group. For the tests at –20 °C and at –10 °C only, the results may correspond to accuracy groups at ambient temperature multiplied by 2 except when, at ambient temperature, AG = 30. In this case the AG = 30 may be multiplied by 1,5. EXAMPLE
At ambient temperature AG 5 may change to AG 10 both at –20 °C and at –10 °C. At ambient temperature AG 30 may change to AG 45 both at –20 °C and at –10 °C.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
7.9.4
!Verification of the upper limit of the highest set range for overpressure monitoring"
Test method: a) ensure that the body is at atmospheric pressure; b) adjust the trip pressure to the upper limit of the highest set range; c)
starting from approximately 80 % of the selected trip pressure increase the monitored pressure at a rate of change not greater than 1,5 % of the selected trip pressure per second until closure of the SSD occurs;
d) repeat the test c) five times; e) calculate the arithmetic mean of the six actual values. The test requirements are met if the set value calculated in e) corresponds to the specified accuracy group. 7.9.5
Determination of flow coefficient
For a stand-alone SSD, a specific determination shall be carried out by testing the SSD with its closing member in fully open position, in a test rig in accordance with 7.7.7.4.7 of EN 334:2005. The following flow coefficient formulae may be used:
those in 6.2 of EN 334:2005, or
C v coefficient as detailed below.
The C v coefficient shall be determined for at least three different operating conditions with: ! C vi
Q
=
404,72 ×
∆ p ×
" p u
+ p b
d × (t u
+
273)
where C vi is the flow coefficient for a test; Q
is the flow rate in m 3/h at normal conditions;
∆ p
is the pressure drop across the SSD in mbar;
pu is the inlet pressure in bar; t u
is the inlet temperature in °C;
pb is the absolute ambient atmospheric pressure in bar; d
is the relative density (air = 1, non dimensional value).
The C v flow coefficient shall be assumed to be equal to the arithmetic mean of the three values. For C v values a tolerance of ± 10 % against the declared value is permitted.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
!
" Key 1
SSD (in the scheme including a vessel upstream inside the cabinet)
2
Microswitch or similar device
3
Recorder
4
Pressure transducer
5
Environmental cabinet
6
Pressure vessel (in the scheme to be included in the cabinet)
7
Leakage control valve
8
Isolating or needle valve
9
Pressure regulator
10 Pressure indicator A
Regulator controls the operating pressure of the SSD
B
Regulator adjusts monitored pressure
!deleted text "
!Figure 5" — Test rig configuration for SSDs
49
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
7.10 Response time !The response time for the trip pressure for over-pressure monitoring is determined at ambient temperature. " The test starts with the closing member in the open position and with the SSD body at the maximum operating pressure. If the response time is longer for lower operating pressures the test will also be carried out at the minimum operating pressure. The monitored pressure is set at approx. 50 % of the set value. The monitor pressure is raised so that the trip pressure plus the maximum value of deviation is reached within 0,2 s (see !Figure 6"). The response time shall be determined to an accuracy of < 0,1 s.
The response time is measured from when the monitored pressure reaches the highest limit value of the AG until the closing member has reached its closed position. The test comprises three consecutive operations and the response time is the arithmetic mean of the three measured values. The response time shall be stated in the type and production surveillance test report (with a special note if it is longer than 2 s), together with a description of the test conditions. !
"
Key 1
Set value of the trip pressure
2
Monitored pressure
3
AG
4
!t ≤ 0,2 s"
5
Response time t a
6
Closing characteristic
7
Open
8
Closed
!Figure 6" — Measurement of the response time
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
7.11 Relatching difference and unlatching 7.11.1 !Trip pressure for over-pressure monitoring" !The tests are carried out at ambient temperature with the closing member in the closed position, the monitored pressure at the highest trip pressure for over-pressure monitoring and with the SSD body at maximum operating pressure."
The test starts with the monitored pressure in excess of the set value established in 7.9.4. The pressure is slowly lowered to the minimum value within the accuracy group, at which point it shall not be possible to relatch the closing member. Following this operation the monitored pressure is adjusted to the relatching difference value specified by the manufacturer. In this condition the device is latched and for devices DN ≤ 150 impact tests are carried out in accordance with !Figure 7" and Table 15 (or an equivalent arrangement). The impact loads in accordance with Table 15, or other loads with equivalent energies, are applied ten times directly to the outlet connection of the SSD by a drop hammer. The test requirements are met if no unlatching of the shut-off device occurs. The established relatching difference and the test conditions shall be stated in the test report. 7.11.2 Lower trip pressure The test for lower trip pressure is carried out in a similar way to 7.11.1.
Table 15 — Impact loads M (kg)
M (kg)
DN
PS ≤ 16
PS > 16
DN ≤ 50
0,2
0,3
65 ≤ DN ≤ 150
0,4
0,6
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Dimensions in millimetres
Key 1
Rigid clamping
2
Test sample
3
Impact absorbing plate
4
Rigid clamping
5
Drop hammer (M )
!Figure 7" — Impact test rig
7.12 Closing force The data specified by the manufacturer for all relevant loads are checked by testing the SSD under operating conditions at ambient temperature. The test shall be carried out at the most unfavourable operating conditions, to be specified by the manufacturer. For this purpose the closing force F S for both the initial and final position of the closing member are determined as the arithmetic mean of 3 tests respectively, similarly the friction ( R ) is determined. The friction to be considered is that measured with motion (not static friction). The resulting loads ( S) and (W ) are calculated. The dynamic force (D) shall be considered only if in the fully open position it opposes the closing of the closing member. It may be measured either at the most unfavourable conditions or calculated by: D
=
2 C r × A × ρ ul × cul
where C r is the dynamic factor (see D.2); A
is the area of closing member in contact with the fluid (see D.1), in m2;
ρ ul is the density of the fluid with flow Qul (see 7.15) in kg/m 3;
c ul is the velocity of gas at the inlet flange under volumetric flow rate Qul (see 7.15) in m/s. The test is passed if the requirements of 5.6 are met. For SSDs with variable mounting positions (see 5.1.2) the most unfavourable case shall be considered.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
7.13 Endurance and accelerated ageing Test method: a) fit the SSD with the overpressure setting element for the lowest specific set range and set to its mid point; b) subject the SSD to a total of 100 closure cycles (which may include closure cycles previously carried out); c)
subject the SSD to the internal sealing test in accordance with 7.8 and to accuracy group test to 7.9.2;
d) subject the SSD to further 50 closure cycles with the temperature reduced to the lower limit value; e) after allowing the temperature to return to ambient temperature subject the SSD to internal sealing and accuracy group tests in accordance with 7.8 and 7.9.2 respectively.
7.14 Resistance to gas of non metallic parts This test should be carried out only on the non metallic parts having an influence on the operation of the device. Verification is carried out in accordance with the requirement in 4.2.3.
7.15 Verification of the strength of the trip mechanism, valve seat and closing member against dynamic impact of flowing gas This test shall only be carried out on SSDs where there is a dynamic impact on the closing member in its fully open position. The test shall be carried out with the closing member in its fully open position, on a test rig in accordance with 7.7.7.4.7 of EN 334:2005. Flow conditions shall be such that the product calculated below is a maximum:
(Qul2 × ρ ul )max where Qul is the volumetric flow rate at the inlet flange at operating conditions (not at normal conditions), in m3/h; ρ ul is the density of the fluid with Qul at inlet flange in kg/m 3.
Both the values of Qul and that of ρ ul should be chosen from those declared by the manufacturer. The test operating conditions shall be such that:
(Qut2 × ρ ut ) = 1,5(Qul2 × ρ ul )max where Qut is the volumetric flow rate at the inlet flange at test conditions (not at normal conditions), in m 3/h; ρ ut is the density of the test fluid with Qut at the inlet flange in kg/m 3.
Test method:
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
a) fit the SSD with the overpressure setting element for the lowest specific set range and set to its mid point; b) adjust the inlet pressure so that the density at the inlet is equal to ρ ut; c)
increase the volumetric flow to Qut;
d) close the SSD by increasing the controlled pressure in the controller; e) decrease the controlled pressure in the controller and re-open the SSD; f)
close the SSD by increasing the controlled pressure in the controller;
g) repeat the operations e) and f) twice; h) check internal sealing and the accuracy group in accordance with 7.8 and 7.9.2 respectively; i)
repeat the test as above with the SSD equipped with an under pressure monitoring unit.
These tests should be carried out where technically possible and economically justified. Where this is not the case, alternative test methods may be used, e.g. those detailed in Annex D.
7.16 Final visual inspection 7.16.1 After type test Upon completion of the tests in 7.5 up to and including 7.15 and the tests in 7.4 and in Annex A when applicable, the test samples shall be dismantled and inspected to verify the compliance with the requirements detailed in 5.10. 7.16.2 After routine tests and production surveillance Upon completion of the routine tests the SSD shall be externally inspected. There shall be no visible evidence of damages and the markings shall comply with the applicable instructions.
8
Documentation
8.1 Documentation related to type test 8.1.1
Documentation required prior to type test
The following documentation shall be available at the time of carrying out the type test: a) photographs and/or leaflets; b) scheme and pertinent functional description; c)
technical data for the series of SSDs and a list of performance data to be confirmed;
d) assembly drawing of SSDs; e) overall dimensional drawing; f)
nameplate drawing;
g) strength calculation or test report for all pressure containing parts;
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
h) parts list with material description for all components; i)
manufacturing drawings of all pressure containing and critical internal components;
j)
installation, operation and maintenance manual.
8.1.2
Test report
On completion of the type test a report according to EN ISO/IEC 17025 shall be provided detailing the results of the tests carried out. If alternative methods are used, they shall be described in detail in an appropriate section of the test report.
8.2 Documentation for the customer 8.2.1
Sizing equation
The manufacturer shall specify the sizing equation and the operational limits in terms of maximum value of the product
(Qu × ρ u )max or in other equivalent terms, in the installation manuals or in the relevant catalogue,
where Qu is the volumetric flow rate at the inlet flange at operating conditions (not at normal conditions), in m3/h; ρ u
is the density of fluid with Qu at the inlet flange in kg/m 3.
The sizing equation may be as detailed in Annex E. 8.2.2
Documentation provided at the request of the customer
Inspection certificate and/or NDT certificate and/or material certificate in accordance with EN 10204 for pressure containing parts and for bolts, screws and studs if applicable. 8.2.3
Documentation provided with the shut-off device
Installation, operation and maintenance manual, in the language of the country of destination or in the languages accepted by the user, giving appropriate instructions on:
information on safe use of the connections detailed in 9.2 and on safe use of auxiliary devices detailed in 9.3;
safety requirements concerning commissioning and de-commissioning procedures;
safety requirements on filling/discharge of gas of/from SSD;
!periodical functional checks and maintenance; "
a statement of whether maintenance is possible and the relevant instructions;
data on nameplate except serial number, year of manufacturing and specific set range;
hazards arising from misuse and particular features of design when appropriate;
how to trace the right spare parts;
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
response time;
storage requirements for spare parts;
a statement on installation according to the provisions of EN 12186/EN 12279;
a statement that the SSD does not require any protection against exceeding its allowable pressure when for the upstream pressure regulating station the maximum downstream incidental pressure (MIP d) is less than or equal to 1,1 x PS;
!notice for users of SSDs class B on residual hazards on premature and/or unnoticed failure of pressure detector element, "
shall be included with each SSD or shipment of SSDs.
8.3 Documentation related to production surveillance in accordance with 6.6 8.3.1
Documentation to be available for production surveillance
For each series of SSDs the manufacturer shall have available the following documentation:
type test report;
records of inspections satisfactorily passed during the manufacturing process.
8.3.2
Production surveillance report
The production surveillance report shall detail the results of all tests and verifications listed in 6.6.
9
Marking
9.1 General requirements Each SSD shall carry markings containing at least the following data:
manufacturer’s name and/or logo and/or registered trade-mark;
manufacturer’s town and country;
safety shut-off device type;
EN 14382 (this document);
temperature class (class 1 or class 2);
functional class (class A or class B);
!type of SSD (IS or DS); "
serial number;
year of manufacture;
nominal size DN;
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
flange ratings;
allowable pressure PS;
valve seat diameter (only where different sizes are provided) or valve trim (for this term see EN 60534-1) or the flow coefficient;
specific set range;
!maximum component operating pressure pmax and the specific maximum allowable pressure PSD of safeguarded chamber (for differential strength SSDs only); "
leakage class in accordance with EN 1349 (for cut-off devices only);
where necessary, warning drawing attention to dangerous misuses;
additional marking in accordance with order specification.
The data shall be indicated using the symbols of this document. The flow direction shall be marked clearly and permanently on the body by an arrow. If a nameplate is used it shall be permanently legible and attached at a clearly visible place. The technical details listed above shall be repeated in the inspection certificate (see Annex F). The CE marking, where applicable, shall be accompanied by the manufacturer’s name and/or logo and/or registered trade-mark, SSD type, serial number, year of manufacture, allowable pressure, specific set range and operating temperature range.
9.2 Marking of connections for sensing, exhaust and breather lines Each connection shall be marked in terms of:
function, e.g. breather line, sensing line, exhaust line, etc.;
minimum nominal diameter for the pipework concerned.
9.3 Identification of auxiliary devices The following devices shall be identified if applicable, as specified in the order specification:
bypass;
relatching device;
manual closing device.
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Annex A (informative) Ice formation
A.1 General These requirements and tests apply only to SSDs whose function could be impaired by external ice formation.
A.2 Requirements These SSDs should be constructed or protected in a manner designed to avoid negative influences of ice formation due to humidification.
A.3 Tests The SSD is installed in a test rig and the trip pressure is adjusted for the lowest value of its set range. The relevant tests of 7.8 and 7.9.3 are carried out the following way: a) the SSD with its closing member in the open position is cooled down to the minimum operating temperature, the value of the operating pressure is set to approximately 50 % of PS; b) after temperature stabilization the ambient temperature is raised to (0 ± 2) °C. Water is sprayed on the SSD from above and around (as if from a hemisphere) until a homogeneous layer of ice has formed; c)
the ambient temperature is again lowered to the minimum operating temperature. After temperature stabilization the following items are verified in accordance with 7.9 and 7.8 by varying the pressure in the sensing line:
trip pressure;
internal leakage.
Check if the requirements of 5.2.3 (internal sealing) and 5.3 (accuracy group) are met.
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Annex B (informative) Compliance evaluation4)
B.1 General This document contains the conditions for the compliance evaluation of any single SSD to the document. However, in order to make an assessment of compliance of a full range of SSDs coming off a production line, more elements may be needed such as a factory production control system or quality management system, a type-testing scheme, a qualification scheme and/or a certification scheme. These systems are independent from the strict evaluation of conformity of a single SSD, and may be required either by legislation or regulations, or by contractual agreements. Unless there is an appropriate system in place, CEN/TC 235 is of the opinion that the following clauses represent minimal conditions to assess the compliance evaluation of a series of SSDs and of those coming off a production line to this document. For SSDs certified as in compliance with this document, the manufacturer should carry out the compliance evaluation in accordance with B.4. Where there is a conformity assessment to the PED, the compliance evaluation with this document should not consider the requirements of clauses in Annex ZA. Nevertheless this annex may be considered as guideline also in the conformity assessment to the PED.
B.2 Introduction The compliance certification scheme should meet the requirements of this document and establish:
if the production surveillance in accordance with 6.6 may be carried out by the body, if any, that has certified the quality management system of the manufacturer;
a guideline to be followed when any non-conformities are discovered during the production surveillance as detailed in 6.6;
the certificate of compliance in accordance with 5.10 of EN ISO/IEC 17025:2000.
B.3 Procedure The evaluation of compliance should include:
the type test in accordance with 6.3. The test samples should be chosen as per 6.4;
a production surveillance as described in 6.6 every 5 years. The test samples should include two SSDs for each certified series. The test samples should be chosen at random from the production population present at the moment of the production surveillance visit to the manufacturer’s workshop.
4)
For the purpose of these recommendations the definitions contained in EN 45020 are applied.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
The production surveillance may be carried out by the body, if any, that has certified the quality management system of the manufacturer, if it is provided in the certification scheme of the SSDs. Any other verification pertinent to the quality management system of the m anufacturer should be carried out by the body, if any, that has certified the quality management system.
B.4 Manufacturer’s compliance evaluation For each series of SSDs the manufacturer should carry out:
the tests as described in Clause 7. The test samples where applicable should be chosen at least as specified in 6.4;
a permanent internal control of production using a quality management system based on EN ISO 9001. The quality management system should be certified by a third party.
Furthermore, the manufacturer should retain and file:
the material certificates for all pressure containing parts;
the NDT reports and the inspection certificate,
for a period of at least ten years from the delivery of the SSD. A copy of these certificates should be made available to the purchaser if requested in the or der specification.
B.5 Issue of the certificate of compliance If the series of SSDs complies with this document a ”Certificate of compliance” may be issued.
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Annex C (informative) Pressure drop and flow coefficient
C.1 Calculation method for pressure drop throughout the SSD For stand-alone SSDs the calculation of pressure drop should be carried out in accordance with the following formula:
∆ p =
1 163 795
×
t e
+
p u
273
+ p b
×
Q2 C v2
× d
where ∆ p
is the pressure drop in bar;
Q
is the volumetric flow rate at normal conditions in m 3/h;
C v is the flow coefficient; t u
is the gas temperature at the inlet of the SSD in °C;
pu is the gas pressure at the inlet of the SSD in bar; pb is the absolute ambient atmospheric pressure in bar; d
is the relative density (air = 1, non dimensional value).
C.2 Test method for the determination of the flow coefficient C v a) Install the SSD in a test rig as given in 7.7.7.4.7 of EN 334:2005; b) set the test conditions so that the velocity at the inlet of the SSD is the maximum possible; c)
determine the flow coefficients with:
C vi
=
Qi 404,72
×
d × (t ui
+
273)
( p ui + p b ) × ∆p i
where Qi
is the test volumetric flow rate at normal conditions in m 3/h;
t ui
is the test fluid temperature measured at the inlet of the SSD in °C;
pui is the test fluid pressure measured with volumetric flow rate Qi at the inlet of the SSD in bar;
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
∆ pi
is the measured pressure drop with volumetric flow rate Qi across the SSD in bar;
d
is the relative density of test fluid (air = 1, non dimensional value);
d) repeat the test and calculations b) and c) respectively with two different operating conditions, changing the value of volumetric flow rate and/or the inlet pressure; e) calculate the flow coefficient as arithmetic mean with:
C v
62
=
C v1 + C v2 + C v3 3
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Annex D (informative) Alternative test method for verification of the strength of the trip mechanism, valve seat and closing member
D.1 Test method a) Assemble the SSD with all movable parts, including those in the overpressure monitoring unit, in the normal operating position; b) with no fluid flowing through the body of the SSD, measure the force T sl at which the first yielding or failure becomes apparent in any movable part or when the closing member closes; c)
repeat the test as above but with the SSD assembled with its underpressure monitoring unit;
d) T sl is the force required to cause yielding/failure or the force required to close the closing member, whichever is the lower; e) the maximum volumetric flow rate at inlet flange should be:
Qul
≤
0,002 826 × DN 2 ×
T sl k × C r × A × ρ ul
where T sl is the measured force in N; A
is the area of the closing member exposed to fluid flow in m 2;
k
= 3 (when the force T sl causes yielding or failure in the trip mechanism);
k
= 1,5 (when the force T sl causes the closing member to close without any yielding or failure in the trip mechanism); for Qul and ρ ul see 7.15; for C r see D.2.
D.2 Test method for the determination of the dynamic factor C r The test method described hereafter refers to Figure D.1: a) assemble the SSD with all internal movable parts in their normal operating position and install it on a test rig in accordance with 7.7.7.4.7 of EN 334:2005. The external movable parts are not necessary; b) with maximum pressure applied to the body and for three different values of flow, measure the force ( T it) on the stem;
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
c)
calculate the single dynamic factors for the three values of flow with:
C ri
T it
=
2 A × c uti × ρ uti
where T it is the measured force on stem in N; A
is the area of the closing member exposed to fluid flow in m 2;
c uti is the velocity of the fluid with test volumetric flow rate at test conditions (not at normal conditions) at the inlet flange in m/s ρ uti is the density of test fluid at the inlet flange in kg/m3;
d) calculate the dynamic factor of the SSD as arithmetic mean of above three single values: C r =
C r1 + C r2 + C r3 3
Key 1
Inlet
2
Outlet
3
Load T it
Figure D.1
D.3 Test method for a series of SSDs a) Carry out the tests as in D.2 on a test sample of at least three sizes in the series; the sample should include the smallest, the largest and the average sizes; b) calculate the Reynolds number for the sizes of the test sample with:
Re =
64
L × cuti × ρ uti η t
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
where
c)
L
is the max. dimension of the closing member perpendicular to the flowing fluid in m;
η t
is the viscosity of the test f luid in kg × s/m2;
trace the curve C r =f(Re) if the value of C r is found to vary with size;
d) !calculate the Reynolds number at Qul for each size of SSD not included in the test sample with:" Re
=
L × c ul × ρ ul η
where c ul is the velocity of the fluid with Qul at the inlet flange in m/s; ρ ul is the density of the fluid with Qul at the inlet flange in kg/m 3; η
is the viscosity of the fluid with Qul in kg × s/m2;
for meaning of Qul see 7.15; e) !extrapolate the value of C r from the curve c) for each size not included in the test sample using the relevant Reynolds number as calculated in d). "
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Annex E (informative) Sizing equation
The flow of an SSD should be not higher than:
Qmax
≤
404,72 × C v ×
Qmax
≤
0,76 × DN 2 ×
∆ p max
pu t u
p u d × (t u
+ p b
+
+ p b
273
×
+ 273
)
T sl k × C r × A × ρ u
whichever is the lower, unless it is necessary to limit the flow due to noise. where Qmax
is the maximum flow rate in m3/h at normal conditions;
C V
is the flow coefficient;
d
is the relative density (air = 1, non dimensional value);
pu
is the inlet pressure in bar;
pb
is the absolute ambient atmospheric pressure in bar;
∆ pmax
is the maximum pressure drop across the SSD in bar;
t u
is the fluid temperature at the inlet of the SSD in °C;
ρ u
is the density of fluid at the inlet flange kg/m3;
k is the safety factor. This value should be specified by the manufacturer. k ≥ 3 (when, subject to T sl yielding or failure occurs in the trip mechanism); k ≥ 1,5 (when, subject to T sl the closing member closes without any yielding or failure in the trip mechanism). For further information see Annex D; for the meaning of T sl and A see Annex D.
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Annex F (informative) Inspection certificate
Where an inspection certificate and declaration of compliance with this document is provided, the following gives an example of the format which may be used. When the SSD is built into a pressure regulator, the certificate should be in accordance with Annex B of EN 334:2005.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
! MANUFACTURER’S TRADE MARK/NAME TYPE SERIAL NO. END CONNECTIONS:
Inspection document type 3.1 according to EN 10204
N°
Declaration of compliance according to EN ISO/IEC 17050-1
DN
Date ________
PN
assembly drg. PRESSURE CONTAINING PARTS
________
FACE-TO-FACE ______________
overall dim. drg. MATERIALS
S E R U T X I F
Allowable pressure Maximum operating pressure
FUNCTIONAL CHARACTERISTICS PS ________ pumax ________
bar bar bar
Specific set range for underpressure
W dso ___to___ W dsu ___to___
Valve seat diameter a
bp
________
mm
Max. loading pressure a Response time
t a
________ ________
bar s
Specific set range for overpressure
bar
Max. operating pressure of ……….….. (chamber in differential p bar max ________ x strength SSD) a Specific maximum allowable pressure of …………….. PSD ________ bar (chamber in differential strength SSD) a Temperature class ________ Functional class ________ Settings: pdso _______ bar pdsu ________ bar (only if at shipment the adjusting screw is sealed) CLASS OF:
accuracy group AG ______________ bpu __________ bar Strength test Body and inner metallic partition walls 1,5 PS (min. PS + 2) ______ bar
S T S E T
Controller
bar
Fixtures ______ bar
Controller
bar
Fixtures ______ bar
External tightness test Body 1,1 PS _______ bar
Internal sealing test at 0,1 bar and at 1,1 PS
bar
Setting of: __________ at ______ bar __________ at ______ bar __________ at bar The above-described product(s) is(are) in compliance with EN xxxxx. SIGNATURE OF THE INSPECTOR SIGNATURE OF THE SIGNATURE OF THE PERSON OR PERSON AUTHORIZED BY THE PERSON RESPONSIBLE AUTHORIZED BY THE CUSTOMER b FOR THE TESTS MANUFACTURER (for witnessing the acceptance test only) a
When applicable.
b
When acceptance test in accordance with Annex H is specified in order specification.
"
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Annex G (informative) Order specification
G.1 General The ordering of SSDs, especially for bigger sizes, depends largely on the conditions on site, other SSDs already in the network, interchangeability and other factors. Therefore, in addition to the minimum specifications in tenders, offers and orders other specifications as mentioned in the document may be required.
G.2 Minimum specifications G.2.1 Details of construction
direct acting/indirect acting;
integral strength/differential strength;
type of end connections;
additional features;
for cut-off devices, leakage class (in accordance with EN 1349) relevant to internal sealing.
G.2.2 Dimensions
SSD size DN;
nominal pressure PN;
face-to-face dimension;
valve seat diameter.
G.2.3 Performance
set range or set point W do/W du/ W dso/ W dsu/ pdso /pdsu;
allowable pressure PS;
accuracy group AG;
operating temperature range (class 1 or class 2);
functional class (class A or class B).
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
G.3 Optional specifications
lifting facilities;
sealing of adjusting devices;
manual closing device;
extended operating temperature range;
internal sealing requirements in accordance with EN 1349;
additional marking;
test in accordance with Annex A for outdoor installation (ice formation);
maximum pressure drop at specified operating conditions;
maximum loading pressure;
!deleted text "
relatching difference;
resetting arrangement (e.g. a removable operating lever);
underpressure shut-off;
acceptance test in accordance with Annex H;
external bypass for pressure equalization;
adjustable response time;
specific response time and relevant test (only for cut-off devices);
closing force;
inspection certificate;
NDT certificate;
material certificate class in accordance with EN 10204 for pressure containing parts;
material certificate class in accordance with EN 10204 for bolts, screws and studs;
languages for manual accepted by the user.
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Annex H (informative) Acceptance test
Acceptance tests and verifications are carried out on the finished SSD by the manufacturer in the presence of the purchaser’s inspector before shipping, if specified in the order specification. The tests are:
dimensional check and visual inspection in accordance with 7.1;
material check in accordance with 7.2;
external tightness test in accordance with 7.7;
internal sealing in accordance with 7.8;
set value of the trip pressure in accordance with 7.9.2 at ambient temperature.
Unless otherwise specified, the number of SSDs selected for an acceptance test should be as follows:
2 SSDs for batches of 2 to 4 pieces;
3 SSDs for batches of 5 to 8 pieces;
4 SSDs for a batches of 9 to 20 pieces;
5 SSDs for batches of 21 to 30 pieces;
6 SSDs for batches of 31 to 60 pieces;
10 %5) for batches > 60 pieces.
Additional tests, if required, may be specified in the order specification.
5)
Rounded up to a whole number.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Annex I (informative) !Seat leakage (alternative requirement)"
This annex establishes a series of seat leakage classes related to the specific internal sealing requirements. If requested in the order specification the internal sealing requirements may be in accordance with EN 1349. The leakage class will be included:
on the nameplate;
on the inspection certificate.
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Annex J (normative) Materials
J.1 Steel materials for pressure containing parts and inner metallic partition walls !The steel materials listed in Table J.1 with the restrictions listed in the last 5 columns of the same table,
are suitable for the design of pressure containing parts and inner metallic partition walls of SSDs complying with this European Standard. "
73
b
x a m
m N m D x a m
]
b
N D x S P [
-
m m x r a b
-
x
a s e c m r a n i o v S b i e P t d c i y r t t C e s f ° e a 0 R S 6 s l
9 ) 0 E 0 ( 2 : 9 1 0 0 A 2 : + 1 5 0 A 0 + 2 : 5 2 0 8 0 3 2 : 4 2 1 8 3 N 4 E 1 S N B E
l a w n o i t i t r a p c i l l a t e m r e n n i d n a s t r a p g n i n i a t n o c e r u s s e r p r o f s l a i r e t s a l a i m r e l t e a e t M S 1 . J e l b a T
0 0 1
o e r t u C t a r ° e 0 p 2 m e t a g n C s i t ° l l a a r 0 e 6 w p t o n O o C t ° i i t 0 r 1 - a p t n e m u c o d t n a v e l e R
e p y T
p u o r G
c i l l a t e m r e n n i d n a s t r a p g n i n i a t n o c e r u s s e r P
x
x x x
x
x
x
c
c
2 8 2 0 0 1
5 2 0 0 1
c
3 8 2 0 0 1
5 8 2 0 0 1 , c c 4 - 6 8 8 2 2 0 0 0 0 1 1
c
7 8 2 0 0 1
N E
h m t 4 , i s t m w m G m n C e m 0 t 4 m < 2 h ° m J 5 4 5 m 5 l i m 0 m 1 w 0 2 0 , 7 a < e 5 0 , 1 r – 0 m 2 i ≤ n m i . 1 1 n 5 u ≥ < 1 1 S m m s 8 o 1 i / s h & o m q s t 4 m ≤ e s ≤ e a s t 0 e r i 5 R s n . s , 0 n s k n r J e w 4 y 1 u e 1 5 s n 4 g < t r 5 k h 1 / 1 n e i c i a s a 7 i t 0 m h k t c t H n h e r i n ≤ c k 2 h o . e i c t d t m w e C G S t b 1 s h i l p t c ° 5 s , h 7 / 5 h m h e u e m , t e 0 9 e h t i 1 3 2 m t e d t o l 2 2 n t i t G P o c b k s t p m w 1 t 0 h r w – 2 c u . i t 3 p t , i a p r 0 5 1 J u a 5 h 5 d e s 4 4 w 5 t 2 s o / 5 h 6 h 0 5 n 4 t 5 r t t i l e ≤ 0 4 7 l i 0 c 0 p i o t 2 a 0 . . d w . n s 1 . , u S 0 1 a m 1 d 1 ≤ 0 n r e s / G 2 e R J , 7 / J / o / m 0 i o p o r n J 5 m 5 O m 0 H p H m 5 t k 5 3 m 0 a r p J 2 m . c i 5 2 1 5 d G h N 5 P n t t 0 0 g h 5 5 h t o i c t 3 S 5 / 5 5 n 6 i 5 i 3 s a w t S 1 2 a 3 h , & 2 l 3 5 e p S t l i w P d P 5 m ≤ G m ≤ e w m 6 , a , 6 3 l i 1 s 2 m & s e r 5 e d 3 7 3 s 6 7 m 1 s J e n 5 0 4 e h 4 7 8 5 P t t e 3 5 0 . n 5 5 1 n f 3 4 4 0 m s a 0 , 1 . 3 0 0 k o . . 0 o 1 0 0 . 1 f c % r . . 1 / k i S . c c t ≤ 1 i v 1 1 1 / 1 ≥ 3 i i / / h h / s n 6 / s G t & s / t a e t l 5 s O l J H H H 1 e 1 s d L R s 2 a a e e ≥ 4 J e G N J J G N a n 1 n 5 i n 7 5 5 5 5 p r s n 5 i u i 5 k n y 2 k 0 t g a 3 i 3 5 7 5 l l l . c 7 m c 3 2 h 2 m 2 V 2 3 2 3 l l l m o 1 i o S t S n / h t S n K P P P P A A A A l d e e n t a s d d e e l l r o g o R f
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V f h K o t i t . s t s w v a a s n h t n e i J h c r t o i o m w 7 i f t e ) 2 r w a i s T ) t n u V Q K T n i g q e + s e ( d Q e r m + 5 ( y d n d e r 3 o m m s e r a d i l a r 3 b 0 A Q l y e e t u e + r n e C 0 . 3 0 t s ( a p % e q t e 1 1 n d n m s e ° 1 r p / 2 ≤ e e a e 6 m r 1 7 m y e 0 e l r t . t r 2 3 = t s t e h e 1 < m p – 1 a t d a t e p n / i t D r o p c % n i d n a D , u a m n e r 4 m u m s s . , e 1 o a m n d n S m q t f d A i 8 o e ≥ e s C e d o r d s i 0 t i h t ° e l t n m 9 M y n n N c n 0 h p r 6 r a a J 3 a p 0 n r e e . , e 2 c u n % C o t a 0 1 n s 0 g 5 n d m m – i / u e e 4 2 e 6 2 m e h e t s , q i r 0 r a u h e 1 d 2 i . d & m m c i q t u ≤ 1 u . n 1 n % e e q 1 q i n s w l ≥ a D 8 0 l 5 e e 1 6 p u e n d 5 e i n e D 2 1 p q r C 6 o n 2 t , . r m i 7 y < 1 y J t a , s m e r 2 u . 0 A h r e r a 3 / 1 ≤ s b a a c t n % ≤ i t % t 0 3 / d h g 6 t i l n 2 i l n 5 4 a f 0 i l . o C n 4 < t O e e a n d s 1 e i o m w h m 2 , M . 1 n e i s t d m i / v s 0 ≥ s s u 1 l M e a d r m l n l 1 s e n N u t i a 1 r l p e e i y C 0 5 e p a g J 1 e e C a p p e l h 6 u r t m n l n 7 D . p 5 0 6 y u o 2 D 2 1 1 t s w 3 s h t S A a A l l d e e n t a s d d e e l l g o r o R f
. n h i t i m w y r 9 9 J C 0 t 5 5 2 a n ° 2 2 0 0 . 0 . d e m 2 1 1 n – e t / / a l p a 2 2 e p n R R e r u i T T h s m 5 5 t f 6 6 o d n J 2 2 . s P P v a 0 2 s , , a a 5 5 J % d p 5 5 6 n 2 2 7 1 a n i 0 . 0 . 2 ≥ e k 1 s / 1 n e r / V r K i h t o m 2 2 s f f R t o n A d R T T . h e e 5 5 t s 3 3 m i v a u 2 2 e w r s P P i s J s s n H , , u n 7 n n o 2 8 8 q i o i o i o i t t 2 t t 0 0 e r V a J a a 1 1 y n K n a n 5 n 5 0 g . 0 . r g s i g g i 3 1 a i t s i s S / 1 t s / n e n e s e , e e d d d H 2 e C d l 2 2 l l l m ° R m e e e e e J R e 0 e i T l r t e 5 T e t e t 5 2 t s 7 9 5 s u s s 9 p – p l l q l l l 2 1 1 u t l e l l A S P P s a A r A A
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/ t 6 n 2 s e J V 1 K h 0 s t s i m B 7 K 3 8 0 e 1 F s e S e H 2 6 m w i 5 s n r d C s d 4 i y 0 t d s r 7 ° l m d . E r t u V n n f r o a n a a n q 8 0 1 0 , l 1 K e a t g a n / 9 e l h e 2 a 0 4 r a n s m g e y – 5 9 i c h m ≤ t 5 0 e i e % t n e r t 5 5 t y e s n i t r 3 s r ≤ m w i r s e i n 6 a s t a a 3 0 m F a i . e u t e m q e 1 c R r n i n E 1 h ) u t r s n n i a e e , / c d q s e e ≥ i e e m d e m h h r r 6 i t t m 3 2 r e p u n s i q e z r m r i r J o a u y y o y i J y e f e t l l r 2 0 w e h q a , r l l r , l l m a 0 t a 0 s p 2 . 2 n t a p r e t C y a 0 l A n n ° r d o r 1 4 e m 7 % e p l a n p r u d y e 0 t a n / u 5 e E a t e r o s t n m 6 s % a m 0 , n s 2 n a 5 n . s i a e 1 m t d C ( 0 i r e – e 1 ≥ i d a e h t 5 n ° l c n e 1 C i 3 2 2 / % u c u N l p t t e , a t r i e 9 p 0 a m P w i E 0 q 5 p p n r e 0 3 5 i o n l 2 u . 2 m g f , . e h 0 % B e u – p t n r e G ≤ n s , W 5 1 m t l t s i p 0 1 s 2 A o t s 6 f 2 / d ( e p y l h C a m u J o r n u 1 . 2 2 a A B d : p . t ≤ n i s 5 h h , e 0 a J a a n u n w t . K t i m 5 t i f ≥ v s i 0 h H r C n 1 % t a o 3 g B 5 i o i n / 5 e 7 w e w i h m 2 2 : S s i t J 3 m 5 8 6 t r w n P s i s i J s , n s s m 5 d 1 2 1 0 o n n u 7 s , i w e o 6 7 E n A l e i o q o d o 2 2 , 0 t a a P t i W o 1 p B 0 i i 1 l p t t t 2 s s 1 a a a h e r t V E 6 p ≤ B A m e d c e W o d a e i r 0 , 5 u , n y n n o a . K p e g w C n d 4 s : H A c r e m a g r g i g 6 h 1 i r i s 8 a 7 e l a c s s t 0 0 / s i . h r a F t d s t n / o g t t 3 a a n 3 n e i g e n % 3 e i e o e 0 1 d f r c o a c 1 e i ) a i 6 e d e d n d i . / w t g l h r 5 o t m 1 i n 4 r m 0 h l m 5 G l e l . t . a t 2 s F e e 2 e s e a v M i c t M o e 2 g e 1 t e , 2 J t K 1 r / e l 0 e u t e n a 4 p e S 6 h f s i 9 5 t p g 5 5 5 e p i o e u c A . p J 3 m s s a s 8 0 t w d 0 e c ≤ 3 l l l s q 3 7 8 1 m 1 l r l p 2 l l l 2 2 n e . e v y 7 2 h x u o e o A s C S A A A d r E E 1 A c b a A f ! a T 2 A c e l d e e n t a s d d e e l l g o r o R f
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f 0 l o 3 % a e J . & 6 c v c 0 6 i T V 1 a n 1 . 2 K m t s n ≥ 4 J i e a 6 s s s d h i a n n 5 t r 7 m i l n c d a o 2 c A e f J r m , m t V e 6 o r o h A 0 f t e n K F , i e 2 s C r s t r e t L i t ° w h e n s 0 t d s n , u n s m e e d f n e 2 q e e 2 s – e i a o r m n n a m l m & r a k . A o e ) e 5 e t y u e c r i c l . v i r . 1 a q e r l h i l r C e u t r S i h c a . i v u t s ° u a a r h n J n t t t q w a q , i e 0 y q i e r n d n f e J s r 2 7 s e m n r m e – r s o e e 2 a r e 7 y t a t a . m y J m y t e l % m d 2 r r v e r 0 l n a a m V a c 8 e a t a r a 5 e r V n a 0 K i t 2 p . 2 t L 5 g K e i 3 s n m , n n d p i o F 3 J u e r t d t q C e e 0 o t u m l 7 e ° t n e n m h n s L m s 2 2 p , & r m a J ≤ e 0 e t h i p e e 3 t e l L e e t h p u m d F 2 V y C l o m p w r l p 2 % i 0 u p p – e l a K s : m a s l r e u 5 e r L s r w 2 n p t p h r o 8 e i a i , e h u t h g u n s r 2 d a t t t o c 1 s f , u u c 1 s i e s f M n i i , t a s q h 0 s 0 q i n i f 0 s s s s w w h t i a t h o i ≤ 1 l e e e a e m t s t e s l e r i . 5 s l s o i e i v p r m d e n w c e d a d 1 e l w l y y e e w p l y e e p a t C a a 1 J t c 7 r d p 5 a r d m 0 r C 4 : d r a r ° s r r H a ° e n a a C h c t 8 a a 0 g g g r J t 2 t 6 i u 7 u r r o t a 7 l l 2 l i n 0 d i 0 a l F F l g ( s 0 7 d f g c F l o g p n n e 2 a 2 n o e t 1 l r d a l a L L a l l 1 2 a l i e m – r – l . l a G n t 1 n H V v a i , M a C t g s t a M M e m c a M ° s l o 3 e e 0 9 a l a a e 6 6 3 0 0 6 4 4 7 0 u p . 6 p . 7 3 5 F 2 1 2 6 K 5 m 4 9 e 0 9 a p n 2 m A t w p J 1 e L d p n e 2 3 3 4 5 5 6 6 l u i r 7 l , t n 1 7 h h o e u i A s m A c ! b s m A A A 2 A A a A a H 2 A c A t A l d e e n t a s d d e e l l g o r o R f
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S P n e . h s M T S A w n o i C ° t c e e 0 t l V 6 n a b s K o n t o n a t e i n t c V s t n e C e t s e m r K s ° l e i e m h m J t 0 i d h n . n e e d t r d 2 f n r n 0 i r g r – o r o f i a n i h M 2 t f a u u a C y e i t . o i 6 t h y i r ° m q h d v r q % e t r 1 n r a s o e a t a n w 6 0 r o w t 2 e o e r e t f s r r a 2 n e e t f J e n y e 1 – h o A m e r r y r t e e 7 r d e e t , e % a ≥ u f h t a f e m r 2 a t m i r a e t s a r i C u 5 e m n o e t h r l n C . g A i n V l C q 2 ° l e v l r p l t e l , p e s f r 0 e K t a a p p p o e n m m a W e h r 0 m 2 h t u h m u e o . h s – J l t ≤ e J s d y e t t t t e i ( l s v t p 7 a n r o m 0 m w C a C p d a t h a l p a t r g 2 p l e 2 D i e u e J n ° r 5 n u i n i s A n i s V l i t t E w 7 a 1 0 o s n C e i , u d s P p a n t m K r i A h s o 2 i q 5 2 ) m s h i t h t a s o p e t i C t t e e J 1 C – 1 e i d W e a p s t a s l o w 0 s A V p r e d s P t 1 s w n ° o p n e K y r e e e a 0 e r e n e p p r e r a g d u m B 2 d C s t y S d 0 r d C a b f i o t u m 0 % 2 a h n c t a t a g i e t t e l s a s o C d a i r 1 t l d i x u n t e r n r n f l r c g d g d g 1 5 a a e f m n c e i e l n e o l d g h a a a l a W l l 0 o t r r l l l h s J m a H 1 i l i a B e m . . a g m t n 5 s u r o d a g e M w i v v c H M M e e h 4 ≥ s 0 s e g r C u l a 2 6 6 2 i r 1 p e 6 m - s e t 6 a 7 7 i t n n J o t b i B m 7 i 1 u ° 2 2 d u 5 4 l i G k s 1 J 1 a p J 5 8 1 r 0 r e p C n 2 2 2 2 3 4 4 4 l q l q 1 p l l m e 7 2 u 7 n 7 0 a a f o h c o p A A W c ≤ A 2 A A e r – A s 2 A A A a e r A 1 A 2 F m l p e a s u r i e s r i e d d g t o e n a b z i i m l w e e n h e o s t o l e l e r m t o h o r s a f T F H t s e a h C T a b c
8 5 1 3 I N U
8 7
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
J.2 Metallic materials different from steel materials for pressure containing parts and inner metallic partition walls !The metallic materials listed in Table J.2 with the restrictions listed in the last 5 columns of the same table, are suitable for the design of pressure containing parts and inner metallic partition walls of SSDs complying with this European Standard. "
79
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s l l a w x e a r n s m a 0 0 0 c n i S 2 5 2 o b v i o i t t e P i d t c r i y r t a t C e p s f ° e a 0 c i R S 6 l l o e a x x x x x x x x x r t t " u C e t a r ° m e 0 r p 2 e m n e n t a i g d n C s i t ° l n l a a r 0 a 6 e s w t p x x x x o t n r O a o C p ° i t i 0 t g r 1 n - a i p n i c i a l l t a n t o e c m e r t r e n u n e s n m i s u e d c r n o M p a d 5 M M t r s 9 5 4 t n o 3 r f 9 7 a a v 3 8 A s p / 6 6 e l l A A 5 3 3 / / a e g 9 5 5 i 5 6 4 n r R 3 3 3 i 3 7 8 9 3 9 3 e 8 A A A n t 6 3 5 8 0 8 6 i 0 a 5 5 a 7 A A A 1 1 M M M t 1 1 2 T T T n m M T S A O O S N S S S o N l S S c E e I B E I A A A e e t r / s u T m s L - m U s m 0 0 8 N e o 0 r 8 r 1 E - m 6 1 4 f m P , 0 0 0 t S ≤ 0 0 6 0 3 J s n l 4 0 s 6 4 0 s e G a 5 S 1 e S ≤ r i 5 J J n e r S N k s f e 2 G J G 0 f E i s c 1 i t 8 - " , h N e N N d a 5 t E n S d M / E E 9 5 4 2 l s n l , / 4 - 7 , k c l 0 i a a 5 0 0 a 1 h 5 i 6 0 e w 3 t 2 1 0 2 S 1 0 r l p 0 - S & 5 1 l J h 0 e y 1 0 J - t a i 1 t , 5 T 0 8 S S N a w w 4 S 8 J E 9 J - 4 N 1 - / - h 1 m / 4 N t - 5 E 0 8 N S i J 1 S 0 6 4 / c / T 0 E G E w , i 4 l L - 8 / - T 0 0 / 9 8 l - 1 0 1 0 6 1 S N L 8 8 5 a 5 S 4 J t / 0 6 0 1 1 , - E U s - - 1 - 0 e T 0 , e e 1 4 S N 0 5 8 d / 0 0 L 4 d M 0 2 1 0 E 0 S 8 , a a 0 r 5 4 0 0 4 / 4 J - 1 1 S r 6 - / S S S G G 1 N 0 s T 2 M 0 2 J L J 0 5 M J S 4 M . E 0 1 5 6 e 5 6 4 0 1 J G J G G d - - S 9 3 7 4 - U - / 4 0 9 3 a e N N J 3 5 8 0 2 N 8 N T 0 3 5 r l E E G A A A 4 E 1 E R 4 A A G ! ! b a T t s t a s l a c p a c u e l d o i t e r b o a r i G e e h l l h p n a n p a r o o r r S g i M i
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% 5 1 % % ≥ 5 5 A 1 1 h t ≥ ≥ i % A A w 5 s h t h 1 t i i n o ≥ w w i t A s s a n h n n i t o i o m i i t t o w a a n s n i n e n i o i m m d o o l l t n n a a n e e g d d 2 i l l l b s l e a a P d 7 3 0 l a 3 3 4 i r n n n t e Z Z Z a u u u m C l - C - C - l P P P A
s y c l o n l i a z - t r h e g p u p o o r C w
4 4 8 2 4 5 8 8 B 9 2 1 1 M T N E S A ) K 1 9 4 C C ( C 5 % b 5 P 1 5 ≥ n Z n 5 o i n t S % a u g C 5 n o d ≥ l n A e a h t i ) h t i K w w 1 9 s s 4 n o o n B i t S C ( a N n U B g - i l 5 s l b e a d P l 4 5 a 8 n i 5 Z r e B 5 t n a M S m T l S u l C A A
c
d n a c n i n s i y t o r z l r l e e a p p t p p s o o a C c c
x
x x x x x x x
2 5 8 4
2 - 5 - 4 - 2 2 - 2 - 2 - 1 2 6 6 6 4 5 0 0 0 0 8 5 5 0 0 0 0 5 7 7 9 9 9 9 N E
I N U
% % 4 4
s n o i ≥ ≥ t i n n ≥ i d i n n m m i o s c m A A n h h A o 6 c i c i T t h i i c h h n d i w w n i h ) r r o o 1 w c 6 o f f r 6 0 o s s f T 6 n s ( s i o e n 0 s i n s e ) 2 , n k c n 2 0 e i k 8 r h c t i 0 C m i 6 h d d t ( 8 4 n , & & a 0 7 , 2 , i 0 0 e e t e t t B n u a a a t t t 4 s s s , M C 0 9 6 c c c i i i , , b 0 g g 0 r r g r P i u u u g l l l l l l 5 . M S a a a t t t 5 5 1 1 e e , u i g e m m m 9 C S M l l l 9 l l l l l l l A A A A A A A % 4
s y o l l m a u t i n h i g m u u r l o A w
b
x a m
m N m D
0 5
5 2
-
-
0 5
0 0 1
x a m
m N m D x x r a S b P [ ]
b
x
a r s e c m a n i b o v S i e P t d c i y r t t C e s f ° e a 0 R S 6
o e x x x x x x r t u C t a r ° e 0 p 2 m e t a g n C s i t ° l l a r 0 a e 6 w p t o n O o C i ° t i 0 t r 1 - a
t n e m u c o d t n a v e l e R
)
d e u n i t n o c
(
2 . J e l b a T
s l a i r e t a M
9 ) 0 E 0 ( 2 : 9 1 0 0 A 2 : + 1 5 0 A 0 + 2 : 5 2 0 8 0 3 2 : 4 2 1 8 3 N 4 E 1 S N B E
e p y T
p u o r G
p c i l l a t e m r e n n i 1 d 2 2 2 2 n - - - - 4 6 a 5 6 4 5 7 0 8 5 5 0 s 8 4 5 7 7 4 t 1 9 r a N E S p B g n i n i a t n % % o c % 7 7 e r 7 ≥ ≥ n u ≥ i n i s n m m s i s A n e r m A h o i t P A h c i c
h c i h w r o f s s e n k c i h t & e t a t s c i g r u l l a t e m l l A
i h w r o f s n o i s n e m i d & e t a t s c i g r u l l a t e m l l A
i h w r o f s s e n k c i h t d n a e t a t s c i g r u l l a t e m 2 l 8 l 0 A 6
x
x
x x x x x
x
x
2 6 0 0 9
4 6 0 0 9
2 - 2 - 2 - 2 5 6 4 5 8 8 5 5 4 5 7 7
1 6 0 0 9
2 6 0 0 9
4 6 0 0 9
I N U
N E
I N U
h h t t i i % w w 7 % s s n n 7 ≥ % o o n i i ≥ 7 i t t i i h n t t m ≥ d h d i i n % i % w % n m A s n i o 7 w % o h c s 7 m A c n c 7 s 7 o i i ≥ n ≥ 6 ≥ n t 6 o ≥ A h h i o i i c T T i t A A h d w d n A t i A h c n h i n i n d h i w r i h d h o ) i c n i c h o o c n i c i c 1 h o h w r f c ) o 1 h h c o c s 6 6 w w r f n 6 6 w w T 0 r 6 r f o s o T 0 r 6 r 6 T n i n ( o o n 6 ( f o T f o i s i f n f s i o n ) 0 e i e s s n ) 0 e i e e n e 0 2 0 2 , g ) , g ) g n e m 6 0 6 0 2 g 2 n n n i 0 r a 8 n 0 r a 8 a k c d 6 6 0 r i i 0 a r m ( ( C r C r 6 6 h d s s s d t ( ( s 2 2 r r r n 8 8 , , 2 e 7 r e 7 e & & a 0 e 0 2 , t , t , t , t e e 0 e 0 e e t e t e 0 e 0 e t F u m n m t n m a t a F u m t a M a a a M i a i C i 4 s s 4 s , C i , d 9 d c c c 0 6 d 9 d 0 6 i i i , / , / , / , / i i 0 0 s g 0 s r g r g r S 0 S i s i s e g e l e g e u u u l l 5 s l l 5 , S s M s , S s M s s l a t a t a 0 0 1 s 1 s e 1 e t e e n i n e e e g g n 1 n g g k i k k k m m m M M i S i M M S c c c c l l l l l i l i l l l l h l h l A A t A t A A A A A h t A h t s y o l l m a u t i n h i g m u u r l o A w
2 8
b
x a m
m N m D
9 ) 0 E 0 ( 2 : 9 1 0 0 A 2 : + 1 5 0 A 0 + 2 : 5 2 0 8 0 : 3 2 4 2 1 8 3 N 4 E 1 S N B E
0 5 1
0 0 0 1
3 8
x a m
m N m D x x r a S b P [ ]
b
0 5 2
0 0 6 1
0 1
0 2
x
a s e c m r a n i o v S b i e P t d c i y r t t C e s f ° e a 0 R S 6
o e x x x x x r t u C t a r ° e 0 p 2 m e t a g n C s i t ° l l a a r 0 e 6 w p t o n O o C i ° t i 0 t r 1 - a
t n e m u c o d t n a v e l e R
)
d e d u l c n o c
(
2 . J e l b a T
s l a i r e t a M
e p y T
p u o r G
p c i l l a t e m r e n n i d 5 5 n 6 8 0 6 8 a 0 B 0 B 9 s 7 M 4 7 M t r 1 T 1 1 T a N S S N S p E A B E A g n i n i a t n o c e r e l u b s a s t e r % % s P 5 5 % % i h , , t 1 1 4 4 f ≥ ≥ ≥ ≥ o s n n n n t o i o i o i o e i t t t t e a a a a h g g g g s n n n n l o l o l o l o l l e e e e a o h h , h h t t i t i 5 t i t i d w w 2 w w e s s M s s i n n L n n l o o , i o o p i t i t 4 t i t p a a 2 a a a n n n n e g i g M i g i g b i l s s L s , e s e e 6 e l a d d d d h y y M y y s o l o L l o l o s l l l , l l a a 4 a a k l l l M l l l l r l a A A L A A m e r t s g a n i c w m o u l i l n s o i f m y e o u l l l h A a T
. r a b 5 2 ≤
S P n e h w C ° 0 6 o t C ° 0 2 – m o r f e r u t a r e p m e t g n i t a r e p o r o f d e s u e b n a c l a i r e t a m e s e h T a
. s n o i t c e n n o c t e l n i r i e h t o t r e f e r l l a h s m r e t s i h t s e r u t x i f r o s t o l i p f o s e i d o b e h t r o F b
. g n i t i r w f o e m i t e h t t a D E P o t t n e m u c o d g n i t r o p p u s d e z i n o m r a H c
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
J.3 Materials for fixtures, integral process and sensing lines, connectors and fasteners The materials listed in the previous Tables J.1, J.2 and/or in the following Table J.3 with relevant restrictions are suitable for the design of fixtures. The materials listed in the following Table J.3 with relevant restrictions are suitable for the design of integral process and sensing lines, connectors and fasteners of !SSDs" complying with this document.
84
b
x a m
9 ) 0 E 0 ( 2 : 9 0 1 0 A 2 : + 1 5 0 A 0 + 5 2 : 2 0 8 0 2 3 : 4 2 1 8 3 N 4 E 1 S N B E
m N m D
5 2
-
-
5 8
x a m
m N m D x x r a S b P [ ]
b
x
a r s e c m a n i o v S b i e P t d c i y r t t C e s f ° s r e a 0 e R S 6
n e t s a f d n a s r o t c e n n o c , s e n i l g n i s n e s d n a s s e c o r p l a r g e t n i , s e r u t x i f r s o l f a i s r l e a t i r a e M t a M 3 . J e l b a T
o e r t u C t a r ° e 0 p 2 m e t g C n ° i t 0 a r 6 e o p t O C ° 0 1 -
t n e m u c o d t n a v e l e R
e p y T
t n e n o p m o C
s e r u t x i F
-
-
-
0 0 1
5 2
0 0 1
x
x x x x x x x x x x x x
a
3 7 7 2 0 1 N E
s e n i l g n i L M M M s 5 3 2 3 n n 1 1 3 e o 2 3 3 s i t d A a A / A / 2 c 6 / n 1 - 8 - i 3 9 3 0 1 f a 8 i 0 1 6 2 5 1 3 c 3 9 s 7 8 e 1 2 2 3 3 7 3 4 6 7 s 5 0 p 8 e 0 0 s A A A A A 3 1 2 1 c 1 1 I 1 I D o M T S A S N r N N P p E E A B l a r g e t n I
, , y 8 0 r 1 , 6 a t 7 6 7 n 0 . 5 0 . / 1 7 1 8 e e / 0 m . / h e t l 0 1 8 2 b p 3 / 2 P i n b 0 n n h p t P 2 M i u s n b S M w d S M P 8 4 s n S S 3 s a , 4 1 5 5 , e t 1 3 6 2 n n , , 7 6 k 6 6 c e 7 i m 3 2 0 . 0 h . t u 7 7 1 1 0 0 / . . / t h c o i d 1 1 4 / / 1 8 w e l h 7 0 b 2 n l a t 3 2 P M n S n 7 y S 5 b % M 5 M 4 7 d S 3 S , 6 4 1 7 e 6 . i , 0 f 1 1 3 3 1 1 i , , / c ≥ 5 7 4 6 7 e i n 1 0 6 . 7 0 0 2 p 7 1 s m 1 b 0 . / 0 . / t s i A 1 7 1 8 P t S / 3 / 2 6 i m n l 0 b 4 b 4 e 3 P 1 P , e m n n n n 3 m e r 6 e i M M M M r S S S S 7 t u 1 1 6 8 0 . x q 1 1 3 3 1 e e r
L L 6 6 1 1 3 3 e b P P 1 u T T 7 t , , l 5 6 6 1 e 4 . 1 1 4 e t 1 3 3 5 s / 4 . P P t 2 1 e T T k / , , 2 c L L 1 o 5 0 4 4 s 8 1 7 0 0 8 1 3 3 d 5 i 2 0 1 n T 3 i P a 0 o s s P 1 0 T T . T i e e , , d / 1 M 6 i d d N 9 N a a 4 4 4 e e 4 / . r 9 r r r 0 0 0 d w 7 5 C 9 C g g 3 3 3 a e 3 3 r u 6 l l l l P P P r c t t 6 C X A A T T T G S S S X
s u o i r a V
s e p i P
b
x a m
m N m D
-
-
-
-
-
-
0 0 1
0 5
0 0 1
x a m
m N m x D r x a S b P [ ]
b
x
e a r s c m a n i S b v o i e P t d c i y r t t C e s f ° e a 0 R S 6 o e t r u C t a ° r e 0 p 2 m e t g C n ° i t a 0 6 r e o p t O C ° 0 1 -
t n e m u c o d t n a v e l e R
)
d e d u l c n o c
(
3 . J e l b a T
s l a i r e t a M
9 ) E 0 ( 0 2 : 9 1 0 0 A 2 + : 5 1 0 A 0 + 2 : 5 2 0 8 0 3 2 : 4 2 1 8 3 N 4 E 1 S N B E
e p y T
t n e n o p m o C
x
s r o t c e n n o C
x x x
x x
M 0 2 4 s r 1 A a / e 3 3 0 - - 2 n 8 2 e 9 8 7 8 4 t 7 8 4 s 8 9 2 0 3 A a 8 0 0 4 F O 0 1 1 8 M S T I 2 N E O S N N S I A E E
n i h t i w s s e n k c i h t t n d e n m a u % c o 8 d ≥ e h n t i y m b A d e h i t i f i w c s e s p s n s n n o o o i s t i t i t i a a a t n i n m n g l g i g i i s t s s e n e e d a d d s e l v l l d e e e e l a e e e e t r t t r s s s g l e l l l l l l l h A A A t A n o i s s e r p s g n m i o t t i C f
x
3 9 5 F M T S A
s w e r c s , s t l o b r o f
x x x x x " x
x
M M M 3 4 0 9 9 2 1 - 6 1 1 3 3 8 0 2 A A - 5 - A / 8 9 8 / / 4 0 8 8 3 9 3 9 9 0 O O 8 1 1 2 3 0 S S 0 1 I I 2 A A A N E
x
x x x
3 9 5 F
4 9 5 9 2 9 5 4 9 F J J E E A A S S
M T S A
s w e r c s , s t l o b r o f
. s n o i t c e n n o c t e l n i r i e h t o t r e f e r l l a h s m r e t s i h t s e r u t x i f r o s t o l i p f o s e i d o b e h t r o F
e l b a t s i % h % t 2 f 9 1 o ≥ ≥ s t n n i i e e m m h . A A s s h h e l t t s l i v i i n a t w w c o i e o r s t s t i e a e d s d p n p t s y y i g e h u . l t e t c n c i s d t d d p a r e o a e n d 8 s r n p r o t . s a s f a p g s a u s 8 t c l t e p i , 4 9 s t s s n d i o u A , p p b n b a r n p n 6 . , 8 u r r l w u u o a e 5 s , f o t o o o o l e s r r r s n 9 , 5 s s e g s g f . f a r s s g 2 6 . u 0 0 y d a . A s e e s y d y 8 8 h o s f d s o t 1 1 o t u l 4 e d u o t a a e e e l l l a s s s l s s r l l s l s d s r d k n s s l a A s g g c a d a d a l a r a r e a l a l a a l d l l l l l r r l l m l l l l l a u n n C C A a ! C G C A A A A a A G G m c o e r d , s g g n s t i n t u i r w n w o e d r o p p c n l l u s a o , s f S s t l d e u o t h B s T a b
6 8
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Annex K (informative) !Suitability of safety shut-off device for damp operating conditions
K.1
Test procedure, requirement and acceptance criteria
This type test should be applied to SSDs actuated by a levers system not immersed in the flowing gas. It should be carried out on, at least, one size of SSD, which should be representative of all sizes of the relevant series of SSDs actuated by a levers system not immersed in the f lowing gas. The SSD shall be equipped with:
the over-pressure setting element for the lowest set range and set at mid-point pdso. The setting shall not be adjusted throughout the test and
vent lines, lines, if any, as as specified by the manufacturer. manufacturer.
The SSD is installed inside an appropriate chamber:
at most critical critical position position specified by manufacturer, manufacturer,
with the inlet and outlet end connections sealed,
with only the controller under a pressure. Special provisions shall be adopted for SSDs that are are internally impulsed from the inlet or outlet side,
latched at open position
and subjected 100 cycles of temperature and humidity as follows. A cycle shall take a minimum period of 5 h from (60 ± 2) °C at minimum of 90 % relative humidity to (5 ±2) °C at a minimum of 90 % relative humidity to (60 ±2) °C at minimum of 90 % relative humidity. After completion of 100 cycles, the SSD shall be brought to ambient temperature temperature and subjected to the following test: a) ensure that the body is at at atmospheric pressure; b) with the SSD in the open position, starting from approximately 80 % of the selected trip pressure, increase the monitored pressure at a pressure change rate not greater than 1,5 % of the selected trip pressure per second until closure of the SSD occurs. The test requirements are met if the value of the trip pressure in b) is within:
p dso × 1 ±
AG
100
87
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Annex L (informative) Glossary
English
French
German
Sub-clause
Accuracy group group Actual value of the trip pressure Actuator Body Breather line Bypass Closing force Closing member Component operating pressure Controller Cut-off device Differential Differenti al pressure
Classe de précision précision Valeur réelle de la pression de déclenchement Actionneur Corps Conduit de respiration bipasse Force de fermeture Organe de fermeture
Ansprechdruckgrupp Ansprechdruckgruppe e
3.3.6.2
Istwert des Ansprechdrucks Ansprechdrucks
3.3.3.1
Stellantrieb Stellantrieb Stellgliedgehäuse Stellgliedgehä use Atmungsleitung Atmungsleit ung Druckausgleichseinrichtung Druckausgleic hseinrichtung Schließkraft Stellglied Stellgli ed
3.2.1.3 3.2.1.5 3.2.8 3.2.1.9 3.4.10 3.2.1.1
Komponentenbetriebsdruck
3.4.1 3.2.1.8 3.1.4 3.3.1.1
Direct acting shut-off device
Clapet à action directe
Disturbance variables
Grandeurs de perturbation Conduit de mise à l’atmosphère Accessoires Accessoir es Volume de gaz
Kontrollgerät Sicherheitsabsperrarmatur Sicherheitsabs perrarmatur Differenzdruck Differenzdr uck direkt wirkende Sicherheitsabsperreinrichtung Störgrößen
Exhaust line Fixtures Gas volume Indirect acting shut-off device Inlet operating pressure range Inlet pressure Inner metallic partition wall Limit pressure Loading pressure Loading pressure line Main component Maximum component operating pressure Maximum allowable pressure Maximum inlet pressure Maximum value Minimum value Monitored pressure Normal conditions
88
Pression de service du composant
Pilote dispositif à fermeture lente Pression différentielle différentiel le
Clapet à action indirecte Plage de pression de service amont Pression d’alimentation d’alimentati on Paroi métallique intérieure de séparation Pression limite Pression de charge Ligne de pression de charge Principaux composants Pression maximale de service d’un composant Pression maximale admissible Pression maximale amont Valeur maximale Valeur minimale Pression surveillée surveill ée Conditions normales
3.1.2 3.3.2.2
Abblaseleitung Abblaseleitung
3.2.7
Zusatzeinrichtungen Zusatzeinric htungen Gasvolumen indirekt wirkende Sicherheitsabsperreinrichtung
3.2.2 3.3.5.2
Betriebseingangsdruckbereich
3.3.6.3
Eingangsdruck innere metallische Trennwände Grenzdruck Hilfsdruck
3.4.2
Hilfsdruckleitung
3.2.3
Hauptkomponente maximaler Komponentenbetriebsdruck
3.2.1
zulässiger Druck
3.4.3
maximaler Eingangsdruck Maximalwert Minimalwert überwachter Druck Normbedingungen
3.4.2.1 3.3.3.2 3.3.3.3 3.3.2.1 3.3.5.1
3.1.3
3.2.5 3.4.7 3.3.1.2
3.4.1.1
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
English
French
German
Sub-clause
Nominal pressure Operating temperature range Pressure Pressure containing parts Pressure drop
Nenndruck
3.4.5
Betriebstemperaturbereich
3.4.9
Druck druckbelastete Teile Druckabfall
3.3.1 3.2.4 3.3.6.6
Wiedereinrast-Einrichtung
3.2.1.4
Wiedereinrastdifferenz
3.3.6.5
Response time Safety factor Safety shut-off device Seat ring Sensing line Sensing point
Pression nominale Plage de température de service Pression Pièces sous pression Perte de charge Système de réenclenchement Différence de réenclenchement Temps de réponse Coefficient de sécurité Clapet de sécurité, CS Garniture de siège Ligne d’impulsion Point de détection
3.3.6.4 3.4.8 3.1.1 3.2.1.7 3.2.6 3.1.6
Series of safety shut-off devices
Séries de clapets de sécurité
Set point Set range Specific maximum allowable pressure Specific set range
Ansprechzeit Sicherheitsbeiwert Sicherheitsabsperreinrichtung Ventilsitz-Dichtring Messleitung Messort Baureihe von Sicherheitsabsperreinrichtungen Sollwert Einstellbereich spezifischer maximal zulässiger Druck spezifischer Einstellbereich
Plage de réglage Plage de réglage Pression maximale spécifique admise Plage de réglage spécifique Dispositif à fermeture Sicherheitsabsperrventil rapide Taille du CS Nennweite der SAE Pression d’essai Prüfdruck Mécanisme de Schaltgerät déclenchement Pression de déclenchement Ansprechdruck Variation de la pression de Ansprechdruckabweichung déclenchement Siège de clapet Ventilsitz Volume de gaz Volumenstrom
Relatching device Relatching difference
Slam shut device SSD size Test pressure Trip mechanism Trip pressure Trip pressure deviation Valve seat Volumetric flow rate
3.1.8 3.3.4.1 3.3.4.2 3.4.4 3.3.4.3 3.1.5 3.1.7 3.4.6 3.2.1.2 3.3.2.3 3.3.6.1 3.2.1.6 3.3.5.3 "
89
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association to provide a means of conforming to Essential Requirements of the New Approach Directive 97/23/EC (PED). Once this standard is cited in the Official Journal of the European Communities under that Directive and has been implemented as a national standard in a least one Member State, compliance with the clauses of this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations. Table ZA.1 — Correspondence between this European Standard and Directive 97/23/EC (PED) Clause(s)/subclause(s) of this European Standard 4.3.1, 4.3.2, !4.3.3, " 4.3.4, 4.3.5, 5.6, 5.8 4.1.10, 4.3.1, 4.3.2, !4.3.3," 4.3.4, 4.3.5, 4.3.6, !7.3.1,"7.12 7.3.2. 7.15 4.1.11 !4.1.9, 5.1.7, 5.6, 5.8 !4.1.2.2, 4.1.2.3 !5.1.5 4.1.2.2, 4.1.2.3 7.7.1, 7.8 4.2.1.5 4.2.1.5 4.2.1.6 4.2.1.5 4.2.1.5 6.5 7.5 9.1, 9.2, 9.3 8.2.3 4.2.1.1 4.2.1.2, 4.2.1.4 4.3.5 4.3.6 7.7.1, 7.8 7.5 Annex J.1
Essential Requirements (ERs) of Annex I of PED Nature of Essential Requirement
item
Design for adequate strength
2.2.1
Calculation method
2.2.3
Experimental design method Wear replacement of parts Design, construction and maintenance"
2.2.4 2.7 2.11.1
Independence from regulator " Fail-safe modes for class A SSDs Redundancy" Pressure limiting devices Preparation of component parts Permanent joining Non destructive tests (qualification of personnel) Heat treatment of fabrication welds Traceability Final inspection Proof test Marking and labelling Operating instructions Appropriate characteristics and chemical resistance of materials Compliance of materials with specifications Permissible membrane stress Joint coefficients Short duration pressure surge Final assessment - hydrostatic pressure test Material characteristics
2.11.2 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.2.1 3.2.2 3.3 3.4 4.1 (a), 4.1 (b), 4.2 (a) 4.3 7.1.2 7.2 7.3 7.4 7.5 and 4.1 (a)
!NOTE For shut-off devices dealt with in this standard when used in pressure regulating stations complying with EN 12186 or EN 12279, this table includes all applicable Essential Requirements listed in Annex I of PED except the external resistance to environmental conditions where corrosion is l kely to occur."
90
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
WARNING Other requirements and other EU Directive may be applicable to the product(s) falling within the scope of this standard.
91
BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
Bibliography
[1] EN 437, Test gases – Test pressures – Appliance categories !deleted text "
[2] EN 10002-1, Metallic materials – Tensile testing – Part 1: Method of test at ambient temperature !deleted text "
[3] EN 12732, Gas supply system – Welding steel pipework – Functional requirements [4] prEN 13787 rev, Elastomers for gas pressure regulators and associated safety devices for inlet pressures up to 100 bar [5] EN 45011, General requirements for bodies operating product certification systems (ISO/IEC Guide 65:1996) !deleted text "
[6] EN 45020, Standardization and related activities – General vocabulary (ISO/IEC Guide 2:1996) [7] EN ISO 1518, Paints and varnishes – Scratch test (ISO 1518:1992) [8] EN ISO 2409, Paints and varnishes – Cross-cut test (ISO 2409:1992) [9] EN ISO 6708, Pipework components – Definition and selection of DN (nominal size) (ISO 6708:1995) [10] EN ISO 9001, Quality management systems – Requirements (ISO 9001:2000) [11] EN 60534-3-1:2000, Industrial-process control valves – Part 3-1: Dimensions – Face-to face dimensions for flanged, two-way, globe-type, straight pattern and centre-to-face dimensions for flanged, two-way, globe-type, angle pattern control valves (IEC 60534-3-1:2000) [12] EN 60534-3-2, Industrial-process control valves – Part 3-2: Dimensions – Face-to-face dimensions for rotary control valves except butterfly valves (IEC 60534-3-2:2001) [13] ISO 37, Rubber, vulcanized or thermoplastic – Determination of tensile stress-strain properties [14] ISO 48, Rubber, vulcanized or thermoplastic – Determination of hardness (Hardness between 30 and 85 IRHD) [15] ISO 148, Steel – Charpy impact test (V-notch) [16] ISO 188, Rubber, vulcanized or thermoplastic – Accelerated ageing or heat-resistance tests [17] ISO 815, Rubber, vulcanized or thermoplastic – Determination of compression set at ambient, elevated or low temperatures [18] ISO 1431-1, Rubber, vulcanized or thermoplastic – Resistance to ozone cracking – Part 1: Static strain test [19] ISO 5752, Metal valves for use in flanges pipe systems – Face-to-face and centre-to-face dimensions [20] IEC 60534-3, Industrial-process control valves. Part 3: Dimensions. Section one Face-to-face dimensions for flanged, two-way, globe-type control valves
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BS EN 14382:2005+A1:2009 EN 14382:2005+A1:2009 (E)
[21] !EN ISO/IEC 17050-1, Conformity assessment – Supplier's declaration of conformity – Part 1: General requirements (ISO/IEC 17050-1:2004) [22] ASME B16.34:1996, Valves – Flanged, threaded and welding end "
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