04-SAMSS-055_2014.pdf

Materials System Specification 04-SAMSS-055

17 July 2014

General Valve Valve Requirements, ISO 10423 (API 6A) Document Responsibility: Valves Standards Committee

Saudi Aramco DeskTop Standards Table of Contents 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Scope……………………………….…… ...…… 2 Conflicts and Deviations…………………… Deviations……………………… … 2 References…………………………………… .. 2 Abbreviations and Definitions……………… Definitions………………... ... 5 Notes to Buyer………………………….……… 6 Vendor Evaluation Process………………….. Process………………….. 7 Vendor Responsibility………………………… 7 Responsibility………………………… 7 Drawing Approval……………………………… 8 General Requirements………………… Requirements…………………… ….…. 9 Materials, Coatings and Welding……… W elding…………... …... 12 Requirements for TCC Metal Seated Valves……………..…... Valves……………..…... 13 Sealing………………………………………… 13 Connections and Fittings……………………. 14 Operator………………………………………. 16 Inspection, Examination and Testing……… 16 Testing……… 16 Painting and External Coating……………… Coating……………… 16 Marking……………………………………….. 16 Preparation for Shipping…………………….. 17

Appendix A – A – Vendor Vendor Technical Evaluation Minimum Requirements………... Requirements………... 18 Appendix B – B – Past Past Supply History History Template….. 20

Previous Issue:

New

Next Planned Update: 17 July 2019 Page 1 of 20

Primary contact: Meehan, Martin Finbar on +966-13-8809668 Copyright©Saudi Aramco 2014. All rights reserved.

Document Responsibility: Valves Standards Committee Issue Date: 17 July 2014 Next Planned Update: 17 July 2019

1

04-SAMSS-055 General Valve Requirements, Requirements, ISO 10423 (API 6A)

Scope This material specification along with the purchase order defi nes general requirements for ISO 10423 (API 6A) on/off valves and chokes classified under 04-SAMSS for onshore and offshore wet sour s our liquid, or, gaseous hydrocarbon services with temperature ratings within the range of -50°F to +350°F (-46°C to +180°C). This specification is not applicable to valves classified under 34-SAMSS or 45-SAMSS.

2

3

Conflicts and Deviations 2.1

Any conflicts between this specification and other applicable Saudi Aramco Materials System Specifications (SAMSS), Engineering Standards (SAES), Standard Drawings (SASD), or industry standards, codes, and forms shall be resolved in writing by the Company or Buyer representative through the Valves Standards Committee Chairman (VSCC), Consulting Services Department of Saudi Aramco, Dhahran.

2.2

Direct all requests to deviate from this specification in writing to the Company or Buyer representative, who shall follow internal company procedure SAEP-302 and forward forward such requests to the VSCC, Consulting Services Department of Saudi Aramco, Dhahran.

2.3

VSCC, or his delegate, shall have the final say in resolving any dispute relating to interpretation of this specification.

References Material or equipment supplied to this specification shall comply with the latest edition of the references listed below unless otherwise noted: 3.1

Saudi Aramco Documents Saudi Aramco Engineering Procedure SAEP-302

Instructions for Obtaining a Waiver of a Mandatory Saudi Aramco Aramco Engineering Requirement

Saudi Aramco Engineering Standards SAES-A-206

Positive Material Identification

SAES-W-010

Welding Requirements for Pressure Vessels

SAES-W-014

Weld Overlays and Welding of Clad Materials

Page 2 of 20


04-SAMSS-055 General Valve Requirements, ISO 10423 (API 6A)

Saudi Aramco Materials System Specifications 04-SAMSS-003

Additional Requirements for Low Temperature Valves

04-SAMSS-035

General Requirements for Valves

04-SAMSS-048

Valve Inspection and Testing

04-SAMSS-049

Inspection Testing Requirements, ISO 10423 (API 6A), Valves & Chokes

04-SAMSS-052

Ball Valves, Soft Seated, API 6A, up to 5000 psig

04-SAMSS-053

Lubricated Plug Valves, includes API 6A, up to 5000 psig

04-SAMSS-054

Choke valves, API 6A, up to 10000 psig

04-SAMSS-057

Gate Valves, ISO 10423 (API 6A), up to 15000 psig

04-SAMSS-058

Ball Valves, ISO 10423 (API 6A), up to 10000 psig

04-SAMSS-059

Twinball, ISO 10423 (API 6A), up to 10000 psig

04-SAMSS-062

Mono-Flange Valves, ISO 10423 (API 6A), up to 10000 psig

04-SAMSS-060

Swing Check Valves, ISO 10423 (API 6A), up to 15000 psig

04-SAMSS-061

Axial Check Valves, ISO 10423 (API 6A), up to 10000 psig

04-SAMSS-056

Testing Requirements, ISO 10423 (API 6A), Valves & Chokes

06-SAMSS-001

Selection and Qualification of Elastomers

34-SAMSS-716

Pneumatic Actuators On-Off Service

34-SAMSS-717

Hydraulic Valve Actuators

34-SAMSS-718

Electric Motor Operated Valve Actuators

Saudi Aramco Inspection & Testing Requirements IR-175-000003

Instructions and Explanation of Requirements

IR-175-043000

Valve Materials Certification Requirements

IR-175-043600

General Metallic and Non-Metallic Valves

IR-175-045600

API 6A 10000 psi Valves and Chokes

Saudi Aramco Forms and Data Sheets 6233-1-ENG

Valve Data Sheet

Page 3 of 20



American Petroleum Institute (API) API 598

Valve Inspection and Testing

API 602

Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller

API 6A

Wellhead and Christmas Tree Equipment

API 6D

Pipeline Valves (Gate, Plug, Ball, and Check Valves)

API 6FA

Fire Test for Valves

American Society of Mechanical Engineers (ASME) ASME B1.1

Unified Inch Screw Threads

ASME B1.20.1

Pipe Threads, General Purpose (Inch)

ASME B16.11

Forged Fittings, Socket-Welding and Threaded

ASME B31.3

Process Piping

ASME B31.4

Pipeline Transportation Systems Liquid Hydrocarbons and other Liquids

ASME B31.8

Gas Transmission and Distribution Piping Systems

ASME SEC V

Boiler and Pressure Vessel Code, Non-Destructive Examination

ASME SEC VIII

Boiler and Pressure Vessel Code, Rules for Construction Pressure Vessels

ASME SEC IX

Boiler and Pressure Vessel Code, Welding and Brazing Qualification

Engineering and Equipment Materials Users' Association (EEMUA) EEMUA 182

Integral Block and Bleed Manifolds for Direct Connection to Pipework

International Organization for Standardization (ISO) ISO 10204

Metallic Products - Type of Inspection Documents

ISO 10423

Wellhead and Christmas Tree Equipment

ISO 10497

Testing of Valves - Fire Type Testing Requirements

ISO 14313

Pipeline Valves (Gate, Plug, Ball, and Check Valves)

ISO 15156

Materials for Use in H 2S Containing Environments in Oil & Gas Production Page 4 of 20



ISO 5208

Industrial Valves - Pressure Testing of Metallic Valves

ISO 5210

Industrial Valves - Multi-Turn Valve Actuator Attachments

ISO 5211

Industrial Valves - Part-Turn Actuator Attachments

ISO 9000

Quality Systems - Model for Quality Assurance Design, Development, Production, Installation and Servicing

ISO 9001

Quality Management Systems - Requirements

Manufacturers Standardization Society MSS SP-45

4

Bypass and Drain Connection Standard

Abbreviations and Definitions Buyer’s Representative: Person acting on behalf of the Buyer, who may be from the Engineering, Inspection, Purchasing, Standardization, or, User Organization Company: Saudi Aramco CSD: Company’s Consulting Services Department Double-Block-and-Bleed valve (DBB) (reference ISO 14313:2007 Section 4.7) : single valve with two seating surfaces that, in t he closed position, provides a seal against pressure from both ends of the valve with a means of venting/bleeding the cavity between the seating surfaces. Note:

This valve does not provide positive double isolation when only one side is under pressure. See double isolation-and-bleed valve.

Double-Isolation-and-Bleed valve (DIB) (reference ISO 14313:2007 Section 4.8) : single valve with two seating surfaces, each of which, in the closed position, provides a seal against pressure from a single source, with a means of venting/bleeding the cavity between the seating surfaces. Note:

This feature can be provided in one direction or in both directions.

May: One possible course of action PR: Performance Requirement (ref: ISO 10423) PSL: Product Specification Level (ref: ISO 10423) RVL: Regulated Vendors List Shall: Indicates a requirement

Page 5 of 20



Should: Indicates a preferred recommendation SMG: Company’s SAP Materials Group Vendor: responsible for the supply of valves in accordance with this specification Valves Standards Committee Chairman (VSCC): The Saudi Aramco assigned Engineering Specialist from Consulting Services Department, Dhahran, who originates and is responsible for all Class 04 valve technical specifications and standards or his delegated representative 9COM: Company commodity code

5

Notes to Buyer 5.1

Where a valve requirement falls outside the scope of the existing company 9COM’s the Buyer's Representative shall highlight this to the VSCC and the Materials Supply department in order to allow sufficient time for the evaluation and establishment of a 9COM and RVL.

5.2

No Purchase Order shall be placed on any vendor unless the vendor has undergone and passed the technical evaluation in Section 6, as a minimum.

5.3

Buyer's Representative shall fill out Form 6233-1-ENG for each non-SMG line item and attach it to the Purchase Requisition/Purchase Order. All information on the datasheet shall be completed in order to fully define the valve requirements. The requirements shall be elaborated upon in the notes section in order to fully define requirements. Actuated valves should be complemented by an actuator datasheet. Actuator requirements are outside the scope of this specification.

5.4

The following minimum information shall be considered and the specific requirements and details shall be specified and included in the purchase requisition/purchase order: a. Intended service, flow medium, flow composition, contaminants, particulates, injected chemicals, test medium, etc., – Specify applicable details b. Valve type, size, pressure class, design temperature range, operating conditions, PSL (reference Section 9.9 and 04-SAMSS-056 sections 6.10, 6.11 and 6.12) – Specify requirements and any higher PSL requirements c. End connection type, size, and mating bore sizes – Specify requirement d. Full bore, or, reduced bore, and details as applicable – Specify requirement e. API 6A material class, material for body, trim, stem, seat, fittings, bolting, seals – Specify requirement f. Seat features and configuration – Specify requirement Page 6 of 20



g. Seating type, e.g., metal, soft – Specify requirement h. Seat leakage acceptance criteria – Specify if more stringent criteria is required for the specific application compared to 04-SAMSS-056 Section 6.16 i.

Low pressure pneumatic seat testing – Specify requirement where lower pressure seat testing is required compared to ISO 10423 requirements

j.

Face-to-face dimensions – Specify if any special dimensions are required and where valve type is outside ISO 10423 sizes reference Section 9.22

k. Operator/actuator style – Specify requirement l.

Stroking Speed/Cycles – Specify any special requirements

m. Drain, Vent and Sealant Injection – Specify requirement n. Orientation of installed valve – Specify requirement if other than bore horizontal (Stem vertical upwards) o. Lifting requirements – Specify any special requirements or considerations p. Valve support, ribs, legs – Specify requirement q. Locking device requirements – Specify requirement r. External coating requirement – Specify requirement s. External loading considerations – Specify any requirements; e.g., tension, compression, bending in all planes, etc. Note:

6

7

A DBB valve per ISO 14313 definition in Section 4.4 is not equivalent to DB&B definition in GI-0006.012 Section 8.3.1.

Vendor Evaluation Process 6.1

Vendors shall meet the requirements listed in Appendix A and shall provide the information specified as a minimum.

6.2

Potential vendors shall be required to undergo a plant survey and a technical evaluation of their products in order to establish the vendor’s suitability and capability to supply equipment to meet industry standards, company specifications, standards and requirements. The assessment shall be performed by the VSCC, or his delegated representative.

Vendor Responsibility 7.1

Company technical assessment, company drawing approval and/or compliance with the applicable 04-SAMSS does not relieve the vendor of full responsibility to supply equipment of proper design to meet the specified environmental, application, service, operating conditions and the applicable industry standards.

Page 7 of 20


8


7.2

It is the vendor's responsibility to ensure that all sub-suppliers comply with the applicable industry and company specifications, standards and requirements.

7.3

Vendor shall advise company if there is any information missing from the Purchase Requisition which the vendor requires in order to establish the valve requirements and suitability for the intended service and application.

Drawing Approval 8.1

Vendor shall submit detailed drawings of the proposed valve to company prior to starting to manufacture the valve. When requested per 8.2 company drawing approval shall be required before vendor starts valve manufacture. The drawing shall reflect the proposed supply and shall include the below as a minimum: a) List Saudi Aramco 04-SAMSS and industry codes b) ISO 10423 material classification, temperature rating, PR, PSL c) Bill of materials with part description and specific material grade d) Welding, hard facing, overlay, WPS, PQR e) Overlaid surfaces and any surfaces left in an un-machined condition f) Coating details or surface treatment on parts, as applicable g) Seat detail, i.e. type, material, final coating thickness h) Hard face coating and final thickness i) Seal arrangements, type and materials j) Hydrostatic and Gas shell and seat test pressures, as applicable k) Seat leakage acceptance rate l) Drain, vent, fittings, valve(s) arrangement, when applicable m) Sealant injection fittings and arrangement, when applicable n) Clearances required for maintenance and removal of equipment o) Weight of individual valve, actuator and the combined total weight p) Lifting points, center of gravity q) Saddles/legs, locking devices, as applicable r) Overall dimensions (inches) including dimensions for maintenance and removal

8.2

When requested by company, the vendor shall obtain formal drawing approval through the Buyer’s Representative prior to starting to manufacture the valve:

Page 8 of 20



a) If the purchase is made through the SMG, approval authority is the Saudi Aramco Material Standardization and Projects & Strategic Purchasing Department. b) If the purchase is made through the Saudi Aramco Direct Charge system, the approval authority is the organization originating the requisition. c) If the purchase is made through a Contractor to Saudi Aramco, refer to the contract for the appropriate approval authorit y.

9

8.3

Valves shall be manufactured in accordance with the submitted drawing. If any subsequent change is required the revised drawing shall be resubmitted per sections 8.1, and 8.2 when requested.

8.4

The vendor shall provide the company any other information that is required to verify that the valve is in full compliance with company requirements, specifications, standards and industry codes.

General Requirements 9.1

Valve assemblies or subassemblies shall not be sub-ordered from any other sources or facilities and shall be fully assembled and tested in the manufacturing facility approved by company for the applicable 9COM.

9.2

Vendors shall not label or otherwise present other manufacturer’s p roduct as vendor’s product.

9.3

Valves which will be installed in company facilities which are not supplied directly to company, or, which are supplied as part of skid packages shall be subject to company standards, specifications, requirements and RVL.

9.4

Valves and valve parts shall be new, free of all rust, dirt, scale, and other foreign material.

9.5

Valves shall be highly reliable designs which have been proven in similar environments, service conditions and applications. The design life of the valves shall be 30 years unless otherwise specified.

9.6

Valves shall be designed and constructed for installation offshore or onshore and shall be suitable for hot desert climates and/or saliferous environments.

9.7

Valve arrangements shall be designed to eliminate dead spaces and crevices where solids or debris can deposit or accumulate i nternally (e.g., bore, cavity, etc.) or externally which may affect proper functioning or free movement of the assembly. Protective covers or caps shall be included to protect exposed surfaces, e.g., stem, from the environment where necessary to ensure proper functioning and valve performance.

9.8

Valves shall be API 6A monogrammed. If a specified valve is outside the scope of API 6A and cannot be monogrammed this shall be clearly identified Page 9 of 20



in the proposal with a list of specific points the valve cannot comply with for company (VSCC) evaluation and written approval. 9.9

Valves shall meet the requirements of PSL 2 per ISO 10423 as a minimum. Valves with pressure rating of API 5000 and above shall meet the requirements of PSL 3 per ISO 10423 as a minimum, i.e., wrought products shall be used. Testing requirements shall be per the specified PSL and the requirements in 04-SAMSS-056.

9.10

Valves with special body profiles which prohibit the use of forged bodies may be proposed in alternative body forms together with supporting technical information for company (VSCC) evaluation and written approval.

9.11

Valves shall be suitable for operation and sealing under all the applicable internal and external loading combinations, e.g., bending, compression, tension, actuator weight, installation orientation, maximum actuator torque, speed of operation, and shall be designed to withstand the maximum induced stresses under worse case conditions with no permanent deformation of any part or any deformation that may hinder valve operation.

9.12

Split body valve designs shall not have the split in the plane of the stem.

9.13

The weakest point of the stem shall always be outside the valve pressure containing boundary.

9.14

Stems shall be one piece and shall include an integral shoulder to provide an anti-blow-out feature. Stem retention by means of packing glands, threads, or split rings are not acceptable. Stems shall not eject under any internal pressure condition or if the packing gland components and/or valve operator mounting components are removed.

9.15

Valves shall be a type qualified design per ISO 10423 Annex F PR2 where qualification has been performed in one continuous testing cycle with no maintenance steps.

9.16

Valve proposals for High Integrity Pressure Protection Systems (HIPPS) shall include qualification testing per ISO 10423 Annex F PR2 for the specified operating parameters, including the stroke speed.

9.17

All valves for isolation on/off service shall be type qualified designs per API 6FA.

9.18

Choke valves used for well control which are specified as “fire safe by design”, or, “fire safe by design not tested” shall pass an API 6FA fire test, excluding the through bore leakage requirements, if company decides to have the valve tested.

9.19

Any operational or performance limitations for valves with resilient seats shall be highlighted, e.g., temperature limitations, maximum differential

Page 10 of 20



pressure limits, operational cycle limits, etc., for company (VSCC) evaluation and written approval. 9.20

Past qualification test reports (complete procedure, valve drawing, post-test stripdown, inspection, results) and an independent third party endorsed certificate shall be provided to company upon request to demonstrate that the proposed valve meets the requirements and there was no visible damage, scoring or wear on any component during the qualification test that would prevent the assembly being put into the intended service or that would be likely to lead to the valve failing in service during the valve design life.

9.21

Any valve arrangement which has not been previously qualified per the requirements listed in this specification shall be clearly identified in the proposal. A test plan, schedule and details of the closest valve design which has been previously subjected to qualification testing, including the main test parameters, shall be included in the proposal.

9.22

Face-to-face dimensions shall be per ISO 10423 unless otherwise specified. For valve sizes and ratings which are not covered by ISO 10423 the vendor should propose dimensions for company (VSCC) evaluation and writte n approval.

9.23

Valves shall be inherently antistatic or fitted with an antistatic device.

9.24

Valves specified with minimum design temperatures within the range of 18°C to -46°C shall meet the requirements of 04-SAMSS-003.

9.25

Valves with temperatures rated above 250°F (+121°C) shall meet the requirements of ISO 10423 Annex G as a minimum.

9.26

Vendor shall consider the valve orientation specified and shall include saddles/legs for valves which have bore sizes of 5-1/8” and larger unless otherwise specified or agreed.

9.27

Valves which are heavier than 250 kg shall have certified lifting points included which shall be suitable for lifting, handling and installation of the assembly in the specified orientation unless otherwise specified or agreed.

9.28

Lifting points designed for lifting subassemblies only, e.g., actuator only, shall have suitable warning plates permanently attached to prevent inadvertent lifting of the complete valve and actuator assembly.

9.29

The operation/installation/maintenance manual shall include clear instructions for appropriate lifting of the valve assembly or sub-assembly during handling, installation and removal from the specified orientation.

Page 11 of 20


10


Materials, Coatings and Welding 10.1

The minimum ISO 10423 material classification and temperature classification for the valve shall be “EE” and “U” respectively.

10.2

All materials shall be corrosion resistant to the intended service (e.g., design parameters, operating conditions, flow composition, chemicals, specified test fluids, etc.) and the information contained in the purchase requisition/purchase order.

10.3

All wetted surfaces, parts, surface treatments, welds and heat-affected zones of welds exposed to line fluids shall meet the requirements of ISO 15156. This includes materials under overlays, plating’s or coatings.

10.4

Bonnet and closure bolting shall meet the requirements of ISO 10423 and ISO 15156.

10.5

Valves specified for mainline scraper trap isolation service and HIPPS shall have seat pockets, wetted functional areas, and primary seal areas overlaid with Inconel 625.

10.6

Trim components, e.g., gate, ball, stem, seat, seat rings, clapper, piston rod, pin, seating surfaces, trunnion plates, bushings, hinge pins, guides, and any other small parts in contact with the service fluid, shall be forged material and have a corrosion resistance equivalent to 410SST as a m inimum.

10.7

Materials shall be selected to prevent galling between parts.

10.8

Springs or pushers shall provide equivalent or better corrosion resistance to the seats and should be UNS N07750 as a minimum.

10.9

Sealant injection fittings and associated components, e.g., check valves, shall have corrosion resistance equivalent or better than the trim.

10.10 All seat and stem seal injection surfaces shall have corrosion resistance equal or better than the wetted surfaces of the valve body. 10.11 Seal surfaces shall be overlaid with higher corrosion resistance materials where it is necessary for providing appropriate sealing performance in the specified service. 10.12 Drain and vent fittings, plugs, drain valves, vent valve trims, gaskets, as applicable, shall have equal or better corrosion resistance to the trim of the main valve. 10.13 Vent valve bodies and blind drain and vent flanges shall have equal or better corrosion resistance to the body of the main valve. 10.14 Internal epoxy lined coatings, electroless nickel plated (ENP), or, similar type of coatings should not be used in lieu of solid stainless steel, corrosion Page 12 of 20



resistant alloys, Inconel overlays, etc. Upgraded material should be used where higher corrosion resistance is required. 10.15 Alternative materials which are equal or superior to those specified on the valve datasheet should be proposed for company acceptance where they are deemed necessary for the specific valve design or specified service.

11

12

Requirements for TCC Metal Seated Valves 11.1

A controlled procedure for High Velocity Oxygen Fuel (HVOF) Tungsten Carbide Coating (TCC) of components shall be maintained at vendor’s or sub vendor’s facility.

11.2

TCC shall be applied to the entire faces of the slab gate and seats. TCC shall be applied to the ball and seat contact areas.

11.3

The minimum finished thickness shall be 100µ for gate valves and 150µ for ball valves. TCC shall be 100% dye penetrant tested with no defects.

11.4

The same coating shall be applied to the closure member and the seats.

11.5

Coatings other than TCC should be proposed where the information in the purchase requisition/purchase order indicates that an alternative hard coating is more appropriate for valve performance. Alternative coating proposals require company (VSCC) evaluation and written approval.

Sealing 12.1

Internal and external leak paths shall be minimized.

12.2

All non-metallic seals shall be suitable for the specified service and shall be qualified per ISO 10423 Annex F PR 2 and the specified valve performance requirements.

12.3

All seals and resilient seats which are wetted by the process fluids or which may come in contact with process fluid, e.g., secondary stem seal which becomes wetted if the primary seal leaks, shall be compatible with the information specified in the purchase requisition/purchase order, e.g., design parameters, operating conditions, flow composition, chemicals, test fluids, etc.

12.4

Elastomers shall resist explosive decompression and section diameters shall not exceed ¼ inch. Elastomeric seal usage should be minimized in gas applications and unspecified hydrocarbon services in valves rated API 5000 and above. Elastomeric seals shall not be used as primary stem seals when in contact with sliding stems. Elastomeric seals shall not be used for seating contact surfaces.

Page 13 of 20


13


12.5

Stem sealing shall be achieved with inner and outer seal elements, or, with a stem packing arrangement which meets the qualification requirements and field history requirements in this specification as a minimum.

12.6

Stem and body-to-seat seal types and arrangements shall be designed to accommodate the effects of stem and seat sealant/grease injection when sealant/grease injection features are specified.

Connections and Fittings 13.1

Drain location shall be in accordance with MSS SP 45 and shall be at the lowest possible position in the valve body. Drain connection shall be a connection type shown in the table below. Acceptable Drain and Vent Connections

Body Bore Size

˂ 7-1/16”

≥ 7-1/16”

API 6A 2000 API 6A 3000

API 6A 5000 API 6A 10000 API 6A 15000

Parallel thread profile ISO 228-1

-

NPT

-

9/16” AE profile

9/16” AE profile

Blind Flange

Blind Flange

Blind Flange

Blind Flange

13.2

Parallel threaded connections shall be in accordance with ISO 14313:2007 (API 6D 23rd edition) Section 7.9. Plug size shall be ½” for valve sizes ≤ 41/16” and shall be ¾” for valve bores ˂ 7-1/16”. Fitting shall be a fire safe design and shall be designed to prevent crevice corrosion using a seal, equivalent to the primary seals in the valve, positioned on the valve bore side of the thread. Alternative proposals which provide equivalent features may be submitted for company (VSCC) evaluation and approval.

13.3

NPT threaded connections shall be equivalent size and shall provide equivalent features to parallel type thread connections. PTFE tape shall not be used. A compound proven in similar services shall be used and details of the compound shall be included in the proposal.

13.4

9/16” AE style fitting shall have a blind plug with anti -blowout shoulder. The plug shall have equal or better corrosion resistance to the trim. The body seating surface shall be overlaid where higher corrosion resistance material is required for the intended service.

13.5

Fittings shall be securely locked to prevent loosening using a 316SST locking ring secured to the body or bonnet, as applicable, using a 316 screw, or equivalent. Locking ring shall be field removable and field replaceable.. Page 14 of 20



13.6

Blind flange connection shall be an ISO 10423 1-13/16” or 2-1/16” studded flange face machined integral to forged valve bodies. The valve shall have a blind flange attached which shall have a rating at least equal to the valve assembly rating. Proposals for drain connections in cast bodies or small bore ball valves where bolted trunnions are acceptable shall be submitted for company (VSCC) evaluation and written approval.

13.7

When drain valves are specified the configuration shall provide two isolation barriers and the drain valve shall meet the requirements of this specification. The other end of the valve shall be fitted with a blind flange.

13.8

Monoflange shall not be used as a drain valve unless otherwise agreed in writing with company (VSCC).

13.9

Vent connections and vent valves shall be equivalent to drain valves with exception of body materials in Section 10 when applicable.

13.10 Combined drain and vent connections should be proposed for ball valves and twinball valves where body bores are ≤ 4-1/16” where the vendor can demonstrate that all pressure test requirements and leakage detection can be accurately performed. Combined drain and vent proposals and the proposed location of the drain/vent and test arrangement should be submitted to company prior to PO issue. The proposal will be subject to company evaluation of the suitability for the intended application and any onsite testing requirements. Combined drain and vent is subject to company written acceptance. 13.11 Valve assembly shall provide sufficient access for operation and maintenance of fittings and valves, as applicable. The proposal shall be clearly shown on the submitted drawing. 13.12 Sealant injection arrangements shall consist of the following: a)

One piece sealant injection fitting with an internal non-return valve

b) Non-return valve installed in the body (bonnet, closure, as applicable) below all stem and seat sealant injection fittings c)

Sealant injection fitting shall have a giant button head and a cover which has vent ports and which seals off the fitting by plugging the sealant port

d)

The cover shall not be considered as one of the two barriers

13.13 Resilient seated ball valves with end connections 7-1/16” and larger shall be supplied with seat sealant injection fittings. Reference Section 12.6. 13.14 Metal seated ball valves shall be supplied with seat injection features unless otherwise specified.

Page 15 of 20



13.15 Gate valves shall have an injection fitting, between the metal back seat and the stem seal, which shall be an equivalent connection to the acceptable drain connection types. 13.16 Stem sealant injection fitting shall be provided between the primary and secondary stem seals on all ball valves and twinball valves. Reference Section 12.6. Alternative seal arrangements shall provide equivalent features or shall be submitted to company (VSCC) for evaluation and approval. 13.17 The submittal drawing shall provide complete details on the configuration and arrangement.

14

15

Operator 14.1

Refer to 04-SAMSS-035 Section 8 for requirements.

14.2

Body to bonnet bolting shall not be used for mounting of actuators or gearbox’s.

14.3

Operator torque shall not be re-acted by the bolting.

14.4

Provisions shall be provided to prevent any leakage from the valve reaching or pressurizing the gearbox or actuator housing.

14.5

Ball, Twinball, Gate and Check valves shall meet the additional requirements specified in ISO 14313:2007 (API 6D 23 rd edition) sections 7.13 through 7.20.

Inspection, Examination and Testing Refer to 04-SAMSS-048, 04-SAMSS049, and 04-SAMSS-056 for requirements.

16

Painting and External Coating Refer to 04-SAMSS-035 Section 10 for requirements.

17

Marking 17.1

Each valve assembly shall have a 316 stainless steel nameplate which shall be permanently attached to the valve body. Marking on nameplates shall be permanent using a low stress stamp.

17.2

Nameplates shall include all information outlined in ISO 10423, API 6FA and shall also include the Purchase Order number and tag number as specified as a minimum.

17.3

Unidirectional valves, or, valves with a preferred direction of flow shall have permanent directional marking on the valve body.

Page 16 of 20


18


17.4

Valves with special seating configurations, e.g., contain one DIB seat, shall have permanent marking and highly visible marking on the body which clearly identifies the seat configuration.

17.5

Monoflanges shall have marking on each connection which clearly indicates the function of each valve and shall also meet EEMUA-182 requirements.

Preparation for Shipping Refer to 04-SAMSS-035 Section 12 for requirements.

17 July 2014

Revision Summary New Saudi Aramco Materials System Specification.

Page 17 of 20



Appendix A – Vendor Technical Evaluation Minimum Requirements a. Facility holding ISO 10423 and API 6A PSL 3G certification as a minimum b. Supply history for similar ISO 10423 and API 6A valves in similar services, applications and operating conditions with minimum of 5 years satisfactory performance history with 3 different major oil and gas companies at 3 different locations in Europe and North America for each major oil and gas company. Other history periods shall be subject to the review and approval of the VSCC. c. Past supply history for ISO 10423 and API 6A valves per the layout in Appendix B. d. Written testimonials (including the persons full name, job title, work address, e-mail address, and telephone number) from the major oil and gas companies and projects the VSCC selects from the vendors past supply history shall be provided for VSCC approval. e. Past qualification testing list for ISO 10423 and API 6A valves per the layout in Appendix B which are applicable to the assessment. The list shall clearly identify the details of the valve and the specific test performed, e.g., ISO 10423 API 6A PR 2 App. F, ISO 10423 API 6A App. I, API 6FA, etc., and the main test parameters including closing stroke speeds f. Qualification packages for the references the VSCC selects from the experience list. A package should consist of the complete test procedure, complete test report and results, valve cross sectional drawing, and independent third party certificate. g. Engineering department with experience in the following as a minimum: evaluating valve applications, suitable valve features, performing detailed stress calculations, finite Element Analysis (FEA), Computational Fluid Dynamics (CFD), dynamic simulation studies, material selection, seal selection, welding and overlay, manufacturing and assembly, testing, qualification of valves per ISO 10423 and API 6A including all appendices. h. Facility to perform required Non Destructive Examination (NDE), assembly, hydrostatic testing and an appropriate gas test fa cility for performing all required testing up to the maximum rating required. i.

Past history and established experience with special testing, including but not limited to performance, slurry, shock, torsion, bending, fire

j.

Preservation, packing, painting, and storage facility

k. List of sub-suppliers and material suppliers which have been evaluated, audited, approved and proposed by vendor for the pressure containing components, pressure controlling components, pressure retaining components, trim components, tungsten carbide coating, seals, and bolting as a minimum.

Page 18 of 20


l.


The following additional information shall be provided upon request: sub vendors and material suppliers past supply history for valves supplied to other major oil and gas companies, quality control procedures, raw material sourcing controls, forging capabilities, heat treatment facilities, qualification experience for different valve component sizes, weights, profiles, material grades, past auditing, sub vendors and material suppliers industry certificati ons, e.g., ISO, API, PED, NORSOK.

m. Vendor shall provide details on the experience and specialis t personnel to support installation during onshore and offshore commissioning, start up and after service. n. The VSCC may decide that additional information is required to establish the vendor’s suitability where the vendor does not meet certain requirements, or, where additional information or objective evidence is deemed necessary to demonstrate vendor’s suitability. This may include but is not limited to items such as API RP 591, DNV RP A203, NORSOK M650, field testing, destruct ive examination of sample valves.

Page 19 of 20



Appendix B – Past Supply History Template Column 01

Column 02

Column 03

Column 04

Column 05

Column 06

Column 07

Year Shipped

End User

Project

Location

Application

Service

QTY

Column 11

Column 12

Column 13

Column 14

Column 15

Valve Type

Valve sub Type

Seating Type Material

Body Material Grade

Column 16 TemperaISO 10423 ture Material Rating Class Range

Column 08 End connection Size/Type

Column 09

Column 10

Pressure Rating

Body bore size

Column 17

Column 18

Column 19

Column 20

PSL

Actuation

API PR

Past Qualifications

1.

List shall be provided in excel format with columns 1 through 20 included per the above

2.

Each row on the table shall be for an individual valve type and configuration

3.

Identify specific valves which have been subject to past qualification testing (reference Appendix A - point e)

Page 20 of 20

04-SAMSS-055_2014.pdf

Recommend Documents