SAES-G-005.pdf

Engineering Standard SAES-G-005

28 July 2009

Centrifugal Pumps Pumps, Seals and Mixers Standards Committee Members Odan, Nabeel Mohammad, Chairman Ghamdi, Abdullah Ali, Vice Chairman Abbad, Hussain Ali Dossary, Nayef Ali Enazi, Fahad Husayan Hussain, Khaleel Ma'Atug Jamea, Khalid Hamad Janbi, Sohail Husain Muqahwi, Sameer Salim Nguyen, Linh Van Perez, Esteban Claveria Rabaa, Salem Abdullah Shuhail, Yousuf Saleh

Saudi Aramco DeskTop Standards Table of Contents 1 2 3 4 5 6 7

Scope............................................................. 2 Conflicts and Deviations................................. 2 References..................................................... 2 Design............................................................ 5 Installation.................................................... 15 Testing and Inspection................................. 16 Life Cycle Cost Evaluation........................... 17

Table 1 – Mechanical Seal Selection Guide....... 18 Table 2 – Pump Metallurgy Application Guide.... 31 Table 3 – Test Requirements for Centrifugal Pumps................................ 32 Appendix A – Centrifugal Pump Selection Guide.................................... 33 Appendix B – Typical Drawing of Bleed Bushing Design...................... 35 Appendix C –Minimum Flow Recycle Requirement Guide................. 36 Previous Issue: 16 September 2008

Next Planned Update: 28 July 2014 Page 1 of 35

Primary contact: Odan, Nabeel Mohammad on 966-3-8760119 Copyright©Saudi Aramco 2009. All rights reserved.

Document Responsibility: Pumps, Seals and Mixers Issue Date: 28 July 2009 Next Planned Update: 28 July 2014

1

SAES-G-005 Centrifugal Pumps

Scope This Standard defines the minimum mandatory requirements governing the design and installation of centrifugal pumps excluding submersible pumps that are covered by SAES-G-007, Submersible Pumps and Motors for Water Well and Offshore Service. Pumps in domestic sewage or community water service with driver power rating up to 37 kW (50 HP) shall be to manufacturer standard design and do not have to comply with this standard. This Standard may not be attached to or made a part of purchase orders.

2

3

Conflicts and Deviations 2.1

Any conflicts between this Standard and other applicable Saudi Aramco Engineering Standards (SAESs), Materials System Specifications (SAMSSs), Standard Drawings (SASDs), or industry standards, codes and forms shall be resolved in writing by the Company or Buyer Representative through the Manager, Consulting Services Department of Saudi Aramco, Dhahran.

2.2

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

References The selection of material and equipment and the design, construction, maintenance and repair of equipment and facilities covered by this Standard shall comply with the latest edition of the references listed below, unless otherwise noted. 3.1

Saudi Aramco References Saudi Aramco Engineering Procedures SAEP-302

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

SAEP-341

Equipment Life Cycle Cost Procedure

Saudi Aramco Engineering Standards SAES-B-009

Fire Protection and Safety Requirements for Offshore Production Facilities Page 2 of 35



SAES-B-017

Firewater System Design

SAES-B-068

Electrical Area Classification

SAES-L-310

Design of Plant Piping

Saudi Aramco Materials System Specifications 17-SAMSS-503

Severe Duty Totally Enclosed Squirrel Cage Induction Motors to 250 HP

30-SAMSS-001

Diesel Engines

31-SAMSS-004

Centrifugal Pumps

31-SAMSS-012

Shaft Sealing System for Centrifugal and Rotary Pumps

32-SAMSS-009

General Purpose Steam Turbines

32-SAMSS-013

Lubrication, Shaft Sealing and Control Oil Systems

Saudi Aramco Standard Drawing AD-036821-001

Material Guide for Centrifugal Pumps (Sheet1: Horizontal and Vertical In-Line Pumps)

AD-036821-002

Material Guide for Centrifugal Pumps (Sheet2: Vertical Suspended Pumps)

Saudi Aramco Forms and Data Sheets 2741-ENG & 2741-M-ENG

Centrifugal Pump Data Sheet for Horizontal Pumps and Vertical In-Line Pumps

2748-ENG & 2748-M-ENG

Centrifugal Pump Data Sheet for Vertical Suspended Pumps

7305-ENG

Equipment Noise Data Sheet

Form LCC-001

Life Cycle Cost Spread Sheet for Centrifugal Pumps

Form LCC-002

Life Cycle Cost Spread Sheet for Centrifugal Pump/Motor Trains

Saudi Aramco Inspection Requirements Form 175-310500

Pumps: ASME Centrifugal, Horizontal, End Suction Single Stage, or Vertical In-Line

Form 175-310510

Molten Sulfur Pumps: Centrifugal, Horizontal and Vertical Page 3 of 35


Form 175-310700 3.2


Firewater Pumps: Centrifugal, Horizontal and Vertical

Industry Codes and Standards American Petroleum Institute API STD 610

Centrifugal Pumps for Petroleum, Petrochemical and Natural Gas Industries

API STD 682

Shaft Sealing Systems for Centrifugal and Rotary Pumps

API RP 686

Recommended Practices for Machinery Installation and Installation Design

American Society of Mechanical Engineers ASME B1.1

Unified Inch Screw Threads

ASME B1.13M

Metric Screw Threads: M Profile

ASME B73.1

Specification for Horizontal, End Suction Centrifugal Pumps for Chemical Process

ASME B73.2

Specification for Vertical In-Line Centrifugal Pumps for Chemical Process

ASME B73.3

Specification for Sealless Horizontal, End Suction Metallic Centrifugal Pumps for Chemical Process

Institute of Electrical and Electronics Engineers, Inc. IEEE 252

Standard Test Procedure for Polyphase Induction Motors Having Liquid in the Magnetic Gap

International Standards Organization ISO 2858

End-Suction Centrifugal Pumps (Rating 16 Bar)

ISO 5199

Technical Specification for Centrifugal Pumps Class II

ISO 15783

Seal-less Rotodynamic Pump-Class II Specification

ISO 15156

Petroleum and Natural Gas Industries Materials for Use in H2S-containing Environments in Oil and Gas Production

Page 4 of 35



National Fire Protection Association NFPA 20

Standard for the Installation of Stationary Pumps for Fire Protection

Hydraulic Institute Standard HI 9.6.7 4

Viscosity Correction

Design 4.1

Pump Type Selection 4.1.1

Pump Selection Guide Refer to Appendix A for pump selection based on services. 4.1.1.1

Main firewater and jockey pumps shall comply with the hydraulic and operating requirements of NFPA 20 and SAES-B-017 or SAES-B-009. All main firewater pumps shall not exceed 1800 RPM. Horizontal jockey pumps may operate at 3600 RPM. Vertically suspended jockey pumps shall not exceed 1800 RPM unless approved by the Standards Committee Chairman; Pumps, Seals and Mixers.

4.1.1.2

For new sump installations and for replacement of existing pumps, horizontal direct drive self priming pumps shall be used for open sump services when suction lift (vertical distance between the pump centerline and low-low liquid level in the sump) does not exceed 6 m (20 ft). If self priming pumps are used to discharge into a pressurized system, an automatic air release valve or continuous bleed with orifice shall be provide upstream the check valve in the discharge piping. Vertically suspended lineshaft pumps are acceptable only for cases where suction lift exceeds 6 m (20 ft) or flow rate/discharge pressure is beyond the operating range of self priming pumps. When vertically suspended pumps are used for hydrocarbon and oily water open sump applications, they shall be of the discharge through column design such as API STD 610 VS1 and VS2 pump type. Separate discharge pump design, such as

Page 5 of 35



API STD 610 VS4 and VS5 pump type, is not acceptable for these applications. Vendor mechanical seal selection is acceptable for self priming pumps and may not comply with Table 1 - Mechanical Seal Selection Guide of this standard. Self priming pumps that will be on stand-by mode for extended period of time shall be provided with continuous priming system to avoid losing the priming fluid from the pump suction chamber. If self priming pumps are selected for application where they are running continuously or frequently, a connection line with orifice and a block valve shall be provided between the discharge of the two pumps (the operating and the standby pump) upstream the check valves to insure that the standby pump is always primed. 4.1.1.3

For vertically suspended pumps, an open lineshaft shall be used if the distance between the normal liquid level and the centerline of the pump discharge nozzle is 15.3 m (50 ft) or less. Applications exceeding this shall utilize an enclosed lineshaft. Alternatively, consideration shall be given to the use of electric submersible pumps complying with 31-SAMSS-010 and SAES-G-007.

4.1.1.4

Maximum operating speed of vertically suspended pumps (including vertical cantilever type with suction tail pipe)shall not exceed 1800 RPM unless approved by the Standards Committee Chairman; Pumps, Seals and Mixers.

4.1.1.5

Non-metallic side discharge pumps may be used in sump service provided that all of the following conditions are met:

4.1.1.6

a)

The selection of a metallic type pump is unsuitable due to anticipated corrosion rates > 127 micrometers/year (5 mils/year).

b)

The pump driver rating does not exceed 37 kW (50 HP).

c)

The maximum discharge pressure does not exceed 1,040 kPa gauge (150 psig).

Sealless pumps shall be provided for caustic, acid and sour water services if the motor nameplate rating does not exceed

Page 6 of 35



112 kW (150 HP). All sealless pumps shall be self venting and shall be designed to permit complete drainage prior to dismantling. The use of a sealless pump in glycol or amine services is acceptable but not mandatory. For applications where the motor rating exceeds 112 kW (150 HP) or where sealless pumps are not suitable for the service, sealed pumps shall be used. Magnet Drive Pumps shall not be used if the pumped liquid contains ferrous or iron oxide particles and no external clean flush is available. 4.1.1.6.1 Canned Motor Pumps in accordance with ASME B73.3 or ISO 15783 a)

Canned motor pumps may be used for all sealless pump services.

b)

If secondary containment of the process liquid is required or if the operating temperature exceeds 93°C (200°F), a canned motor pump shall be used.

c)

The operating speed of canned motor pumps shall not exceed 3,600 RPM unless approved by the Standards Committee Chairman; Pumps, Seals and Mixers.

d)

Stator housing and liner hydrostatic tests are required for each pump. The test pressure shall be the pump MAWP.

e)

A dielectric test using a polarization index ratio based on one minute and ten minute readings, in accordance with IEEE 252, is required for each motor.

f)

A thermal device shall be installed in the motor stator winding to trip the motor on high winding temperature.

g)

A low power switch shall be provided to protect the pump against dry run operation.

4.1.1.6.2 Magnet Drive End Suction Pumps (Synchronous or Eddy Current), in accordance with ASME B73.3 or ISO 15783 a)

The operating speed of magnet drive sealless pumps shall not exceed 3,600 RPM. The Page 7 of 35



maximum liquid temperature shall not exceed 93°C (200°F). b)

4.1.1.7

The synchronous magnet torque rating shall exceed the maximum torque of the pump with maximum diameter impeller from minimum continuous stable capacity to 120% of rated capacity by the following factors, based on the calculated torque of the coupling. For molten sulfur application, the factor shall be 1.5 for all calculated torque values: Calculated Torque Nm

Calculated Torque ft-lbf

Synchronous Coupling Rating Factor

<50

<37

1.25

50 - 150

37 - 111

1.15

>150

>111

1.10

c)

The eddy magnetic coupling torque rating shall exceed the maximum torque rating of the pump with maximum diameter impeller from minimum continuous stable capacity to 120% of rated capacity by a minimum of 10%.

d)

If two or more synchronous magnet drive pumps on the same purchase order and of identical type, rating, materials and design conditions are presented for inspection as a batch, a static torque test on one pump is acceptable. Otherwise, a static torque test is required for each pump.

e)

Magnet drive pumps having metallic containment shells shall be provided with containment shell temperature monitoring and protection.

f)

A low power switch shall be provided to protect the pump against dry run operation.

g)

Close coupled mag-drive sealless pumps are acceptable up to 5 HP driver rating.

The pump and its drive train including all auxiliaries shall comply with the requirements of SAES-B-068, Electrical Area Page 8 of 35



Classification. 4.1.2

Unit responsibility for the complete pump train including driver, gear, oil system(s), etc., shall be assigned to the pump manufacturer. Exception: Exception may be made when the driver is a diesel engine, special purpose steam turbine or combustion gas turbine.

4.1.3

4.2

Noise Control 4.1.3.1

For each new piece of equipment or integrated unit that will generate noise in excess of 85 dB(A) at a distance of one meter, the Project Manager shall submit a completed Form 7305-ENG, Equipment Noise Data Sheet, to ECD/EPD.

4.1.3.2

New equipment shall not generate noise in excess of 90 dB(A) at a distance of one meter after engineering controls have been implemented. If the noise level will exceed this limit, the Project Manager shall submit a completed Form 7305-ENG, Equipment Noise Data Sheet, to ECD/EPD, and shall obtain a waiver in accordance with SAEP-302.

Rated Operating Conditions 4.2.1

The NPSHA at 120% of rated flow shall be determined based on rated suction pressure at pump suction nozzle and pumped product vapor pressure at maximum pumping temperature. If strainers are used for long-term basis, the pressure drop across the strainer shall be included the NPSHA calculations.

4.2.2

Viscosity correction factors, per the Hydraulic Institute Standard HI 9.6.7, shall be applied. Extrapolation is not recommended. Correction factors for water are 1:1:1. Limitations on use of viscous liquid performance correction chart are: a)

Use only for pumps of conventional hydraulic design, in the normal operating range, with open or closed impellers. DO NOT use for mixed flow or axial flow pumps or for pumps of special hydraulic design for either viscous or non-uniform liquids.

b)

Use only on Newtonian (uniform) liquids. Gels, slurries and other non-uniform liquids may produce widely varying results, depending on the particular characteristics of the liquids.

Page 9 of 35


4.2.3 4.3

4.4


When determining the rated suction pressure, the expected minimum and maximum suction pressure shall also be specified.

Hydraulic Performance 4.3.1

Pumps complying with 31-SAMSS-004 shall have a continuous head rise from the rated head to shutoff. The head rise shall not be less than 10% of the rated head. For ASME and ISO pumps and pumps to manufacturer's standard design, integrated orifice in the casing might be used to achieve the 10% head rise.

4.3.2

For ASME, and ISO pumps and pumps to manufacturer's standard design, the rated capacity shall not be less than 60% and shall not exceed 110% of the capacity at best efficiency point.

4.3.3

For all pumps, the NPSHR shall not exceed the specified NPSHA over the range of minimum continuous stable capacity to 120% of the rated capacity. At rated capacity, the NPSHA shall also exceed the NPSHR by a minimum margin of 1 meter (39 inches). For variable speed pumps, the above NPSH requirements apply for all speeds required to meet the specified operating conditions.

4.3.4

For all pumps, with exception of pumps operating at 6000 RPM or higher, the suction specific speed, based on the NPSH required for 3% first stage head drop at best efficiency capacity, shall not exceed 6,710 (11,000 in U.S. units).

Casing Design 4.4.1

The maximum allowable working pressure (MAWP) shall be based on the maximum specified relative density with: 

Maximum impeller diameter at rated speed for constant speed applications.



Rated impeller diameter at maximum speed for variable speed applications.

The MAWP of horizontal and vertical in-line pump casings and the discharge heads of vertically suspended pumps shall be at least equal to the sum of the maximum suction pressure and the differential pressure developed at shut-off. The MAWP of the bowl and column assemblies of vertical suspended pumps shall be at least equal to the maximum differential pressure developed by the bowl assembly at shut-off. Page 10 of 35


4.5


4.4.2

Casing design temperature shall be at least equal to the maximum flow temperature. For pumps handling liquids which may autorefrigerate, the minimum design temperature shall be the lowest liquid temperature which would occur as a result of rapid reduction in liquid pressure to 25% of the pump design operating pressure.

4.4.3

The details of threading shall be in accordance with ASME B1.1, ASME B1.13M or other internationally approved standard.

Shaft Sealing 4.5.1

Seal Codes and Applications 4.5.1.1

Mechanical seals shall be in accordance with Table 1 of this standard and 31-SAMSS-012 for the following pumps: a)

Pumps complying with 31-SAMSS-004, with the exception of integrally geared pumps.

b)

ASME and ISO pumps in hazardous, flammable and/or toxic service.

Mechanical seals shall be in accordance with Table 1 of this standard for following pumps: a)

ASME and ISO pumps not in hazardous, flammable and/or toxic service.

b)

Pumps to manufacturer's standard design, with the exception of self priming pumps.

Mechanical seals of manufacturer standard design are acceptable for horizontal self priming pumps. The seal codes used in Table 1 of this standard are based on API STD 682 terminology. Refer to Appendix D. 4.5.1.2

Mechanical seal selections for services not listed in the Mechanical Seal Selection Guide are subject to the review and approval of the Standards Committee Chairman; Pumps, Seals and Mixers.

4.5.1.3

Packing is required for main firewater pumps and for non hydrocarbon slurry pumps. Horizontal firewater pumps shall have drain hole at the bottom of the bearing bracket and shall not be less that 1 inch in diameter. Horizontal and vertical inline jockey pumps shall have mechanical seals. Page 11 of 35


4.5.1.4

4.5.2


Vertically suspended pumps with discharge through column design in oily water, raw water or sea water service shall be provided with a bleed type discharge head bushing, deflector ring and a labyrinth seal instead of a mechanical seal or packing. Refer to Appendix B of this standard for a typical drawing of bleed type design. Proposed designs differing from the typical drawing, including grease lubricated packing, require the approval of the Standards Committee Chairman; Pumps, Seals and Mixers.

Mechanical Seal Piping Plans For all pumps, the piping for mechanical seal flush, quench, vent, drain and leakage detection system shall be in accordance with Table 1, Mechanical Seal Selection Guide and API STD 682. The seal leakage systems, when required by service conditions, shall be included in the scope of supply of the pump Vendor unless otherwise specified. To avoid contamination with pumped product, suitable barrier fluid shall be selected for arrangement 3 seals.

4.6

Bearings and Bearing Housings 4.6.1

4.6.2

Bearings shall be oil lubricated unless exempt from the scope of 31-SAMSS-004, ASME or ISO. Anti-friction bearings of pumps exempt from these specifications may be grease lubricated. Firewater pumps may be grease lubricated. With the exception of pumps having external lube oil system, the following shall be installed on the bearing housings of oil lubricated pumps: 

Constant level oiler



Level sight glass



A drainable sight glass (installed under the bearing housing to drain condensed water from the bearing housing).

The upthrust and downthrust values for vertical pumps quoted by the Vendor shall be the maximum forces expected at any point on the full curve. It shall be verified that the values listed are within the bearing design criteria of the driver or transmission unit which absorbs the rotor thrust.

4.7

Materials of Construction 4.7.1

The metallurgy application guide of Table 2 provides a listing of most Page 12 of 35



liquids pumped. The liquid pumped shall be identified from the table together with the corresponding "Materials Code(s)." The applicable material code shall be specified on the Data Sheet(s) 2741-ENG & 2741-M-ENG/2748-ENG & 2748-M-ENG. ASTM Standard numbers and material grades offered shall be in compliance with (or be superior to) the applicable ASTM Standard numbers and material grades listed on Standard Drawing AD-036821. To enable the manufacturer to complete the required material designations, Standard Drawing AD-036821 must be attached to the Quotation Request or Purchase Order. Substitute equivalent or superior materials shall be reviewed and approved in writing by the Standards Committee Chairman; Pumps, Seals and Mixers. For any requested materials substitution, sufficient data shall be provided by the Vendor to justify the substitution. This data shall include, but shall not be limited, to physical, mechanical and corrosion resistance properties.

4.8

4.7.2

Materials of construction for fluids not listed in Table 2 may be based on information provided in publications, recommendations provided by pump manufacturers or other accepted sources. In such cases, the material selection as proposed by the manufacturer shall be reviewed and approved in writing by the Standards Committee Chairman; Pumps, Seals and Mixers.

4.7.3

Materials exposed to sour environment shall be in accordance with the requirements of ISO 15156.

Couplings and Guards 4.8.1

Lubricated couplings are not permitted.

4.8.2

For horizontal pumps, vertical in-line and vertically suspended pumps having thrust bearings and not driven by reciprocating engines, flexible disc pack or diaphragm type couplings are required.

4.8.3

Rigid adjustable spacer type couplings are required for vertical in-line and vertically suspended pumps not having thrust bearings.

4.8.4

Elastomeric type couplings or couplings having comparable torsional stiffness are required for pumps driven by reciprocating engines and for pumps in frequent on and off operation such as loading and unloading pumps at bulk plants. The elastomeric members shall not deteriorate due to exposure to a hydrocarbon environment. Page 13 of 35


4.9


Drivers 4.9.1

The drivers for ASME and ISO pumps and for pumps to manufacturer's standard design shall be sized in accordance with the following table: Driver Nameplate Rating

4.9.2

4.10

kW

HP

Minimum Percentage of Pump Rated Power

<22

<30

125

22-55

30-75

115

>55

>75

110

For ASME, ISO pumps and pumps to manufacturer's standard design, electric motor drivers shall be in accordance with 17-SAMSS-503, diesel engines shall be in accordance with 30-SAMSS-001 and steam turbine drivers shall be in accordance with 32-SAMSS-009.

Mounting Plates Horizontal Pumps A baseplate is required for grouted, permanently installed equipment. An oil field skid is required for equipment which may be temporarily used for the specified service or frequently relocated. The baseplate shall extend under the pump and drive train components. To minimize damage during shipment, all auxiliary piping and instrumentation shall not extend outside the baseplate perimeter. Vertical Pumps Sump mounted vertical pumps shall be provided with a grouted, permanently installed soleplate or surface plate to which the mounting plate or flange of the pump will attach. Removal of the pump for maintenance shall not require removal of the grouted soleplate or surface plate. Studs shall be installed in the soleplate or surface plate to match the pump mounting plate or flange. The only exception to this requirement is when sump pumps are mounted on a steel sump cover plate. In this case, the sump cover plate shall have studs installed to match the pump mounting plate or flange. Bolts may be used instead of studs for the sump cover plate if provided with a minimum of two guide rods.

4.11

Drain and Vent Piping For toxic liquids or liquids which vaporize at atmospheric conditions, drain and/or vent piping (within the confines of the baseplate) including block valves and flanged terminations at the edge of the baseplate shall be specified. Page 14 of 35



For ASME, ISO pumps and pumps to manufacturer's standard design, 316 Stainless steel tubing may be used for drains and vents. If tubing is used, it shall be per ASTM A269 seamless Type 316. Connectors and adapters shall be compression type meeting UNS S-31600 and ASTM A276. 5

Installation 5.1

5.2

Layout 5.1.1

Pumps shall be located for convenience of operation and maintenance requirements. The pump train arrangement shall ensure safe and easy access to all equipment train components for operation and maintenance purposes.

5.1.2

Provisions for isolation, venting and draining the pump shall be installed to permit internal inspection, repair or dismantling.

5.1.3

Wherever possible, when more than one identical pump train is required, the design of the equipment trains, the auxiliary baseplate(s), the connecting piping, cabling, wiring, etc., shall be identical in layout, construction and accessibility.

Suction and Discharge Piping Suction and discharge piping shall be in accordance with SAES-L-310, Design of Plant Piping.

5.3

Minimum Flow Recycle System 5.3.1

A minimum flow recycle line shall be provided in line with Appendix C.

5.3.2

For pumps with common recycle line, the recycle line shall be connected to the pump discharge piping downstream of the check valves (i.e., on the main header). Where protection against reverse flow from header to recycle line is required, another check valve shall be installed on the header downstream the recycle line take off connection. For pumps with individual recycle line, the recycle lines shall be connected to the pump discharge piping upstream of the check valve. Flow element for the minimum flow recycle system, shall measure the flow in the discharge piping upstream of the recycle line take off connection.

5.3.3

Recycle lines shall be directed back to the suction source. If this is not possible, the recycle lines may be connected back to the suction line only if the recycled liquid is cooled down to allow continuous operation at full Page 15 of 35



minimum flow recycle mode where all the pumped liquid is recycled. Except for intermediate pipeline pumping stations, directing the recycle line to suction line requires the approval of the Standards Committee Chairman; Pumps, Seals and Mixers.

6

7

5.4

The Vendor's General Arrangement (G.A.) or outline drawings shall include all required data including nozzles, shaft centerline and baseplate foundation bolt coordinates to install the pump on its foundation. G.A. drawings shall also show Buyer's references and the main rating data of equipment components.

5.5

Pump units shall be installed in accordance with API RP 686.

Testing and Inspection 6.1

Pumps requiring testing per Table 3 of this standard shall be tested at rated speed. If this is not feasible, the Vendor shall advise and justify his proposed vibration acceptance criteria at his specified derated speed. Vibration data and bearing temperatures shall be recorded.

6.2

Requirements on hydrostatic pressure testing, running and performance testing shall be completed in accordance with the Test Requirements for Centrifugal Pumps, paragraph 6.5 below.

6.3

Pumps shall be dismantled to investigate the cause of any unsatisfactory performance, NPSH or running tests.

6.4

Vibration and temperature measurements shall be taken and recorded for all certified or witnessed tests of pumps complying with 31-SAMSS-004, ASME and ISO pumps and pumps in firewater and molten sulfur services.

6.5

Requirements for documentation certification and witnessing of test shall be as specified on Inspection Form 175-310600 for pumps complying to 31-SAMSS-004, Inspection Form 175-310500 for ASME pumps ,Inspection Form 175-310700 for firewater pumps and Inspection Form 175-310510 for molten sulfur pumps.

6.6

Sump model testing shall be conducted for all sea water intake systems unless specifically waived by the Standards Committee Chairman; Pumps, Seals and Mixers.

Life Cycle Cost Evaluation Unless otherwise approved by the Coordinator, Rotating Equipment Division, Consulting Services Department, quotations for pumps and pump-motor trains of 1000 HP and larger that are in accordance with 31-SAMSS-004 with the exception of pumps in storm water Page 16 of 35



and firewater services, shall be evaluated on the basis of a Life Cycle Cost (LCC) as explained in SAEP-341. This cost is composed of initial cost of the pump plus the present worth of the consumed power cost over an operating period of 15 years, using an Evaluation Factor (EF), which should be shown in the data sheet that goes with the quotation request. The Life Cycle Cost of the pump shall be determined using the life cycle cost spreadsheet LCC-001. The Life Cycle Cost of the pump-motor trains shall be determined using the life cycle cost spreadsheet LCC-002. Note:

28 July 2009

Normal operating point shall be specified on the data sheet. Pump power at normal operating point shall be specified by the pump manufacturer on the data sheet and performance curve.

Revision Summary Major revision.

Page 17 of 35



Table 1 – Mechanical Seal Selection Guide Non-flashing Dry Hydrocarbon Services; containing up to 0.2% water by weight and having Vapor Pressure ≤ 100 kPa abs (14.7 psia) at Pumping Temperature Pumping Temperature °C (°F) Seal Code Category Arrangement Seal Type

1 A (Note 1&2)

API Seal Configuration

1CW-FX (Note 1& 3)

Special Materials

(Note 4) Horizontal Pumps: 11/61 Vertical Pumps: 13/61 (Note 5) Horizontal Pumps: 31/61 Vertical Pumps: 32/61 or 31/13/61 (Note 6) 51 (Methanol) (Note 7)

Seal Flush Plan without Suspended Solids Seal Flush Plan with Suspended Solids Quench Plan / Type Seal Leakage Detection Plan Note1:

-7 to 93 (20 to 200) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps

65 (Level Transmitter) (Note 8&9)

If the pumped liquid is MTBE or gasoline containing MTBE, the seal shall be Type C (Stationary Bellows) and the seal configuration shall be 1CW-FL.

Note 2: If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia). Note 3: For Gasoline services up to 50°C (120°F), seal configuration shall be 1CW-FL) Note 4: If the pumped fluid is sweet and auto-refrigerant, Nitrile elastomers shall be used. Note 5: For vertical in-line pumps having their impellers with balance holes, Seal Flash Plan 11/61 shall be used. Note 6: API Plan 31 shall be used only if the pump differential pressure exceeds 175 kPa (25 psi). Otherwise, Plan 32 flush with a compatible clean liquid shall be used. Note 7: The methanol feed system, Plan 51, is only required for pumping temperature lower than 0°C (32°F) and it is not intended to provide a continuous flow of methanol. It is used immediately prior to start-up to prevent or eliminate icing on the atmospheric side of the primary seal. Note 8: Pumps in bulk plants, truck unloading pumps and lube oil pumps do not require seal leak detection system. Note 9: If level transmitter can not be used, level switch would be acceptable if approved by the Standards Committee Chairman; Pumps, Seals and Mixers.

Page 18 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) Non-flashing Dry Hydrocarbon Services; containing up to 0.2% water by weight and having Vapor Pressure ≤ 100 kPa abs (14.7 psia) at Pumping Temperature Pumping Temperature °C (°F) Seal Code Category Arrangement Seal Type API Seal Configuration Special Materials Seal Flush Plan without Suspended Solids with Suspended Solids Quench Plan / Type Seal Leakage Detection Plan

94 to 204 (201 to 400) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps

C2A1C

1 A (Note 1)

1 C; Stationary Bellows (Notes 4)

1CW-FX FFKM elastomers for pumping temperature above 149°C (300°F) Horizontal Pumps: 21/61 or 23/61 Vertical Pumps: 23/61 Horizontal Pumps 32/61 or 41/61 Vertical Pumps 32/61 or 41/13/61 (Note 2) 62 (Steam) for pumping temperature above 149°C (300°F)

1CW-FX

(Note 3&6)

>204 (>400)

2

--------32 (Note 5) 32 (Note 5) 62 (Steam) (Note 3&6)

Note 1: If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia). Note 2: API Plan 41 shall be used only if the pump differential pressure exceeds 175 kPa (25 psi). Otherwise, Plan 32 flush with a compatible clean liquid shall be used. Note 3: For seal flush plan 32, use seal leak detection plan 65 if the flush liquid will not flash upon leakage. Seal leak detection plan 75 shall be used if the flush liquid will flash upon seal leakage. For seal flush plan 02, no seal leak detection is required. Note 4: Consult CSD/REU for seal and flush selection if seal chamber pressure exceeds 1830 kPa abs (265 psia). Note 5: Seal flush plan 02 shall be used for asphalt services and may be acceptable for crude vacuum bottom pumps subject to review and approval by the Standards Committee Chairman; Pumps, Seals and Mixers. Note 6: If level transmitter can not be used, level switch would be acceptable if approved by the Standards Committee Chairman; Pumps, Seals and Mixers

Page 19 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) Flashing Dry Hydrocarbon Services; containing up to 0.2% water by weight and having Vapor Pressure > 100 kPa abs (14.7 psia) at Pumping Temperature Pumping Temperature °C (°F)

-40 to 60 (-40 to 140)

Seal Code

C2A2A

Category

2

Arrangement

2

Seal Type

A (Notes 1 & 2)


2CW-CS or 2NC-CS (Note 3)

Special Materials Seal Flush Plan without Suspended Solids

(Note 4) Horizontal Pumps: 11/61 Vertical Pumps: 13/61 Horizontal Pumps: 31/61 Vertical Pumps: 32/61 or 31/13/61 (Note 5)

with Suspended Solids Quench Plan / Type

51 (Methanol) (Note 6)

Seal Leakage Detection Plan

75 or 76 (Note 7)

Note 1: For "Gasoline" services up to 50°C (120°F), refer to seal selection guide under “ Non-flashing Dry Hydrocarbon Services; containing up to 0.2% water by weight and having Vapor Pressure ≤ 100 kPa abs (14.7 psia) at Pumping Temperature” Note 2: f approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia). Note 3: If a 2NC-CS seal configuration is supplied, the seal flush Plan shall be 02. 2NC-CS seals are limited to applications above 0°C (32°F). Note 4: If the pumped fluid is sweet and auto-refrigerant, Nitrile elastomers shall be used. Note 5: API Plan 31 shall be used only if the pump differential pressure exceeds 175 kPa (25 psi). Otherwise, Plan 32 flush with a compatible clean liquid shall be used. Note 6: The methanol feed system, Plan 51, is not intended to provide a continuous flow of methanol. It is used immediately prior to start-up to prevent or eliminate icing on the atmospheric side of the primary seal. Note 7: Plan 75 shall be used when the pumped fluid condenses at ambient temperature; i.e., NGL, HC condensates, etc.

Page 20 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) Flashing Dry Hydrocarbon Services; containing up to 0.2% water by weight and having Vapor Pressure > 100 kPa abs (14.7 psia) at Pumping Temperature Pumping Temperature °C (°F)

61 to 204 (141 to 400)

>204 (>400)

Seal Code

C2A2A(Note 1&2)

C2A3C (Note 7)

Category

2

2

Arrangement

2 A (Note 1 & 3)

3 C; Stationary Bellows (Notes 8)

2CW-CS or 2NC-CS (Note 4) FFKM elastomers for pumping temperature above 149°C (300°F) Horizontal Pumps: 21/61 or 23/61 Vertical Pumps: 23/61 Horizontal Pumps: 32/61 or 41/61 Vertical Pumps: 32/61 or 41/13/61 (Note 5) 62 (Steam) for pumping temperature above 149°C (300°F)

3CW

Seal Type API Seal Configuration Special Materials Seal Flush Plan without Suspended Solids with Suspended Solids Quench Plan / Type Seal Leakage Detection Plan

75 or 76 (Note 6)

------54 (Notes 9) 54 (Notes 9) None 54 (Notes 9)

Note 1: If the pumped liquid is MTBE or gasoline containing MTBE:

Note 2: Note 3:

Note 4: Note 5: Note 6: Note 7:

 Seal code: C2A2C  Category 2, Arrangement 2, Type C (Stationary Bellows), Configuration 2CW-CS. If the liquid is at or above its autoignition temperature, the seal code shall be C2A3C with plan 54. If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia). If a 2NC-CS seal configuration is supplied, the seal flush Plan shall be 02. 2NC-CS seals are limited to applications below 93°C (200°F). API Plan 41 shall be used only if the pump differential pressure exceeds 175 kPa (25 psi). Otherwise, Plan 32 flush with a compatible clean liquid shall be used. Plan 75 shall be used when the pumped fluid condenses at ambient temperature; i.e., NGL, HC condensates, etc. If the liquid is below its autoignition temperature, then seal code C2A2C (seal configuration 2CW-CS) with plan 32 may be used when all the following conditions are met: 

The flushing system for plan 32 shall be reliable and available at all times including plant startup,  Economical study justifies the use of plan 32 over plan 54 taken into account the cost of reprocessing the continuous supply of flushing fluid, Note 8: Consult CSD/REU for seal and flush selection if seal chamber pressure exceeds 1830 kPa abs (265 psia). Note 9: Plan 54 shall comply with 32-SAMSS-013.

Page 21 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) Wet Crude Services; containing more than 0.2% water by weight

Pumping Temperature °C (°F)

Vapor Pressure ≤ 100 kPa abs (14.7 psia) at Pumping Temperature <149 (<300)

Vapor Pressure > 100 kPa abs (14.7 psia) at Pumping Temperature <149 (<300)

Seal Code

C2A1A

C2A2A

Category

2

2

Arrangement

1

2

Seal Type

A (Note 1)

A (Note 1)


1CW-FX

2CW-CS

Special Materials

Two hard faces (Note 4) Horizontal Pumps: 32/61 Vertical Pumps: 32/61 (Note 2 & 3)

Two hard faces (Note 4) Horizontal Pumps: 32/61 Vertical Pumps: 32/61 (Note 2 & 3)

None 65 (Level Transmitter) (Note 5)

None

Seal Flush Plan Quench Plan/Type Seal Leakage Detection Plan

76 (Pressure Transmitter)

Note 1: If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia). Note 2: Plan 31 seal flush is acceptable for wet crude service on all Northern Area offshore GOSPs. For Plan 32, the external source flush fluid should be dry crude. Vertical charge and test trap pumps shall be supplied with a bleed type discharge head bushing sized to ensure that the seal chamber is at suction pressure. For plant startup, pumps shall be supplied with a Plan 31 in addition to Plan 32 seal flush. A check valve shall be installed in both the Plan 31 and Plan 32 seal flush lines to prevent flushing fluid from entering the piping system not in use. Note 3: If an external source of combatable flush fluid is not available (usually dry crude) then the seal specification shall be: 

Seal Code C2A3A54



Category 2, Arrangement 3, Type A, Configuration 3CW-FB



Seal Flush Plan 54

Note 4: Silicon Carbide versus Carbon seal face material combination might be used when: 

Saudi Aramco experience is satisfactory on using identical materials in identical service, or



Pump speed is not higher than 3600 RPM and it is clean crude oil service and not in a GOSP service.

Note 5: If level transmitter can not be used, level switch would be acceptable if approved by the Standards Committee Chairman; Pumps, Seals and Mixers

Page 22 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) Dry Crude Services; containing up to 0.2% water by weight

Pumping Temperature °C (°F)

Vapor Pressure ≤ 100 kPa abs (14.7 psia) at Pumping Temperature. <149 (<300)

Vapor Pressure > 100 kPa abs (14.7 psia) at Pumping Temperature <149 (<300)

Seal Code

C2A1A

C2A2A

Category

2

2

Arrangement

1 A (Note 1)

2 A (Note 1)


1CW-FX

2CW-CS

Special Materials

Two hard faces (Note 3) Horizontal Pumps: 31/61 Vertical Pumps: 13/61 (Note 2)

Two hard faces (Note 3) Horizontal Pumps: 31/61 Vertical Pumps: 13/61 (Note 2)

None 65 (Level Transmitter) (Note 4)

None

Seal Type

Seal Flush Plan Quench Plan/Type Seal Leakage Detection Plan

76 (Pressure Transmitter)

Note 1: If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia). Note 2: API Plan 31 shall be used only if the pump differential pressure exceeds 175 kPa (25 psi). Otherwise, Plan 32 flush with a compatible clean liquid shall be used. Note 3: Silicon Carbide versus Carbon seal face material combination might be used when: 

Saudi Aramco experience is satisfactory on using identical materials in identical service, or



Pump speed is not higher than 3600 RPM and it is clean crude oil service and not in a GOSP service.

Note 4: If level transmitter can not be used, level switch would be acceptable if approved by the Standards Committee Chairman; Pumps, Seals and Mixers

Page 23 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) WATER SERVICES Produced Brine Water

Sour Water (Note 5 )

Pumping Temperature

All

All

Seal Code

C2A1A

C2A2A

Category

2

2

Arrangement

1 A (Note 1)

2 A (Note 1)

1CW-FX Wetted metal parts shall be Inconel 625, Inconel 718 or Super Duplex Horizontal & Vertical Pumps: 32/61 (Note 2 ) Horizontal & Vertical Pumps: 32/61 (Note 2 ) 62 (Raw water) (Note 3 ) 65 (Level Transmitter) (Note 6 )

2CW-CS

Seal Type API Seal Configuration Special Materials Seal Flush Plan Without Suspended Solids with Suspended Solids Quench Plan / Type Seal Leakage Detection Plan

--------------Horizontal Pumps: 11/61 Vertical Pumps: 13/61 Horizontal Pumps: 31/61 Vertical Pumps: 32/61 or 31/13/61 (Note 4 ) None 75

Note 1: If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia). Note 2: Plan 32 flush shall be raw water or sea water without suspended solids and cooled to 60°C (140°F) or below. Flush to seal chamber shall remain on even when the pump is idle on stand by mode. If Plan 32 is not available then an Arrangement 3 seal shall be used; Seal Code C2A3A; Configuration 3CW-FB, Flush Plan 54or 53B. Plan 54 shall comply with 32-SAMSS-013. Plan 53B shall comply with 31-SAMSS-012. Note 3: Raw water quench is not intended to be continuous. Piping to be installed as a branch off the seal flush line with a valve downstream of the tee to the quench connection. Note 4: API Plan 31 shall be used only if the pump differential pressure exceeds 175 kPa (25 psi). Otherwise, Plan 32 flush with a compatible clean liquid shall be used. Note 5: Sealless pumps shall be used for this service up to 150 HP. For larger pump size, mechanical seal shall be used. Note 6: If level transmitter can not be used, level switch would be acceptable if approved by the Standards Committee Chairman; Pumps, Seals and Mixers.

Page 24 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) WATER SERVICES

All Other Water Services Pumping Temperature °C (°F)

Up to 60 (Up to 140) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps

61-93 (141 to 200) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps

> 93 (>200) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps

Arrangement

1

1

1

Seal Type

A (Note 1)

A (Note 1)

A (Note 1)


1CW-FX

1CW-FX

1CW-FX

Special Materials

-------------Horizontal Pumps: 11/61 Vertical Pumps: 13/61 Horizontal Pumps: 31/61 Vertical Pumps: 32/61 or 31/13/61 (Note 3 )

-------------Horizontal Pumps: 21/61 Vertical Pumps: 21/61 (Note 2 ) Horizontal Pumps: 32/61 or 41/61 Vertical Pumps: 32/61 or 41/13/61 (Note 2 & 3 )

-------------Horizontal Pumps: 23/61 or 32/61 Vertical Pumps: 23/61 or 32/61 (Note 2 ) Horizontal Pumps: 23/61 or 32/61 Vertical Pumps: 23/61 or 32/61 (Note 2 )

None

None

None

None

None

None

Seal Code Category

Seal Flush Plan without Suspended Solids

with Suspended Solids

Quench Plan / Type Seal Leakage Detection Plan

Note 1: If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia). Note 2: For water condensate up to 77°C (170°F), seal flush plan 11 and 13 might be used for horizontal and vertical pumps, respectively. For other services, the heat exchanger for the seal flush plans 21 and 23 shall be sized to maintain the flush fluid at or below 60°C (140°F) Note 3: API Plan 31 shall be used only if the pump differential pressure exceeds 175 kPa (25 psi). Otherwise, Plan 32 flush with a compatible clean liquid shall be used.

Page 25 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) LEAN DGA, ADIP & OTHER AMINE SERVICES Pumping Temperature °C (°F)

Up to 93 (Up to 200) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps

>93 (>200) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps

Arrangement

1

1

Seal Type

A (Note 1) 1CW-FX

A (Note 1) 1CW-FX

FFKM elastomers Horizontal Pumps: 11/61 Vertical Pumps: 13/61

FFKM elastomers Horizontal & Vertical Pumps: 23/61 or 21/61

None

None

None

None

Seal Code Category

API Seal Configuration Special Materials Seal Flush Plan Quench Plan / Type Seal Leakage Detection Plan Note 1:

Stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia).

RICH DGA, ADIP & OTHER AMINE SERVICES Pumping Temperature °C (°F)

Up to 93 (Up to 200) C2A2A

>93 (>200) C2A2A

2

2

Arrangement

2

2

Seal Type

A (Note 1)

A (Note 1)


2CW-CS

2CW-CS

Special Materials

FFKM elastomers Horizontal Pumps: 11/61 Vertical Pumps: 13/61

FFKM elastomers Horizontal & Vertical Pumps: 23/61 or 21/61

None

None

75

75

Seal Code Category

Seal Flush Plan Quench Plan / Type Seal Leakage Detection Plan

Note 1: Stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia).

Page 26 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) GLYCOL AND TEG SERVICES Pumping Temperature °C (°F)

Arrangement

Up to 93 (Up to200) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps 1

> 93 (> 200) C1A1A C2A1A 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps 1

Seal Type

A (Note 1)

A (Note 1)

Seal Configuration

1CW-FX

Special Materials

--------

Quench Plan/Type

Horizontal Pumps: 11/61 Vertical Pumps: 13/61 None

1CW-FX FFKM elastomers for pumping temperature above 149°C (300°F) Horizontal & Vertical Pumps: 23/61 or 21/61 None


None

None

Seal Code Category

Seal Flush Plan

Note 1: Stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia).

CAUSTIC SERVICES (Sealless pumps shall be used for this service up to 150 HP. For larger pump size, mechanical seal shall be as below) Pumping Temperature °C (°F) Seal Code Category Arrangement

Up to 93 > 93 (Up to200) (> 200) C1A1A C1A1A C2A1A C2A1A 1 for ASME & ISO Pumps 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps 2 for API & ISO 13709 Pumps 1 1

Seal Type

A (Note 1)

A (Note 1)

Seal Configuration

1CW-FX

1CW-FX

Special Materials Seal Flush Plan Quench Plan/Type Seal Leakage Detection Plan

Ethylene propylene elastomers FFKM elastomers Horizontal Pumps: 11/62 Horizontal & Vertical Pumps: Vertical Pumps: 13/62 23/62 or 21/62 Water Water None

None

Note 1: If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia).

Page 27 of 35



Table 1 – Mechanical Seal Selection Guide (cont'd) SODIUM HYPOCHLORITE SERVICES (Sealless pumps shall be used for this service up to 150 HP. For larger pump size, mechanical seal shall be as below) Pumping Temperature °C (°F) Seal Code Category

Up to 93 > 93 (Up to200) (> 200) C1A1A C1A1A C2A1A C2A1A 1 for ASME & ISO Pumps 1 for ASME & ISO Pumps 2 for API & ISO 13709 Pumps 2 for API & ISO 13709 Pumps

Arrangement

1

1

Seal Type

A (Note 1)

A (Note 1)

Seal Configuration

1CW-FX

1CW-FX

Special Materials

---------Horizontal Pumps: 11/62 Vertical Pumps: 13/62

-----------Horizontal & Vertical Pumps: 23/62 or 21/62

Quench Plan/Type

Water

Water


None

None

Seal Flush Plan

Note 1: If approved by the Standards Committee Chairman; Pumps, Seals and Mixers, a stationary bellows seal is an acceptable alternative to the standard Type A seal in applications where the maximum seal chamber pressure does not exceed 1830 kPa abs (265 psia).

HORIZONTAL SULFUR PUMPS Seal Code

C2A1A

Category

2

Arrangement

External seal with single coil spring

Seal Type

A

Seal Configuration

1CS-FX  Two hard faces – Silicon Carbide

Special Materials

 The dynamic elastomer shall be Viton coated by Teflon.  Other elastomers material shall be Viton.

Seal Flush Plan

02/62

Quench Plan/Type

Steam


None (Note 1)

Note 1: The drain piping shall be steam traced to the edge of the baseplate and shall be terminated with flange.

Page 28 of 35



General Mechanical Seal Notes: 1.

An orifice shall be provided in the seal leakage piping, downstream of the level/pressure transmitter. The minimum orifice diameter shall be 3.2 mm (1/8 in).

2.

The setting of the pressure transmitter shall be 70 kPa gauge (10 psig). If the seal leakage piping is connected to the pressure sewer or flare header, a differential pressure transmitter across the orifice shall be used and set at 70 kPa gauge (10 psig).

3.

A time delay relay, adjustable to 30 seconds, to actuate alarm/shutdown shall be provided. This relay shall not be included in the pump vendor's scope of supply.

4.

Mechanical seal drain and vent piping shall be terminated at the baseplate edge with a flange.

5.

Leakage from seals having throttle bushings shall be hard piped to the gravity sewer. Leakage from seals having auxiliary dry running backup seals shall be hard piped to either the pressure sewer or the flare header. A check valve shall be installed downstream of the orifice to prevent flow from the pressure sewer or the flare header into the seal chamber. For pumps provided with dual seals, the valve high point connection of the buffer fluid system shall be hard piped to the pressure sewer or the flare header. This piping requirement shall not be included in the pump vendor's scope of supply.

6.

The surface of shaft sleeves shall be overlaid under the dynamic secondary sealing elastomers in contact with the pumped liquid. The overlay shall be of a wear resistant material such as Stellite and , tungsten carbide.

7.

With the exception of seal springs bellows, all process wetted metal components of seals shall be of the following materials: Fluid Service

Seal Material

Produced brine water

Inconel 625, Inconel 718 or Super Duplex

Seawater

UNS S 31254, UNS S 39276, Hastelloy C276 & C4, Monel, Super Duplex or Duplex.

Raw (aquifer) water

904L, Super Duplex or Duplex.

Wet crude service

904L or Super Duplex.

All other services

316 L SS

Metal parts not in contact with the medium pumped shall be 316 SS. Seal springs shall be of Hastelloy C-276, C4, C22 or equivalent ASTM material If bellows seals are provided, the bellows material shall be Inconel 625 or 718.

Page 29 of 35



Table 2 – Pump Metallurgy Application Guide

Temperature Range °C (°F) Dry Hydrocarbon Service

Material Code Horizontal and Vertically Vertical InSuspended Line Pumps Pumps

(1)

< 0 (< 32) 0 to 400 (32 to 750) 0 to 285 (32 to 550) > 285 (> 550)

HK HKA2 HKA4 HSX

VK VKA VKA1 VSX

All 0 to 285 (32 to 550) > 285 (> 550)

HKA4 HKA4 HSX

VKA1 VKA1 VSX

All

HKA2

VKA

 93 ( 200) > 93 (> 200)

HKA4 HSX

VKA1 VSX

Drinking Water

All

HFB1

VFB1

Raw and Sea Water

All

HSI

VSI

Produced Brine Water Sour Water, Demineralized Water

All All

HSZ HSI

VSZ VSI

Domestic Sewage

All

HFB1 or HSI

VFB1 or VSI

Sump Oil/Water Mixture

All

HSI

VSI

Molten Sulfur

All

HKA4

VSI

Amine and Glycol

All

HSI

VSI

Acid and Chemicals

All

(3)

(3)

Sweet Sour Wet Hydrocarbon Service Sweet Sour

(2)

Water Services Condensate Water, Treated Cooling Water Boiler Feed Water

Other Fluids

Notes: (1) Up to 0.2% water by weight. (2) Greater than 0.2% water by weight. (3) The Standards Committee Chairman; Pumps, Seals and Mixers shall be consulted regarding selection of specific material grades.

Page 30 of 35



Table 3 – Test Requirements for Centrifugal Pumps (1)

Hydrotest Witnessed Certified (5) Running/Performance Witnessed Certified (4) NPSH Testing Witnessed Certified

Manufacturer Standard

ASME, ISO & Sealless

31-SAMSS-004

No (3) No

No Yes

Yes Yes

No (3) No

No Yes

Yes Yes

No (3) No

No (6) Yes

Yes (6) Yes

(2)

(2)

Notes: (1) These test requirements apply only to pumps supplied by Vendors known to the Buyer. Pumps ordered from new sources shall be fully witness tested and inspected except for manufacturer standard pumps. (2) If more than one pump on the same Purchase Order of identical type, design and design conditions are presented for inspection as a lot, the test requirements shall be as follows: a.

For high energy pumps, as defined by API STD 610, all pumps shall be fully witness tested.

b.

For low energy pumps, one pump, selected at random shall be fully witness tested. The remaining pumps shall be fully shop tested and test certificates shall be provided;

(3) All tests for pumps in firewater and molten sulfur services shall be certified. (4) Open pit sump pumps require a minimum submergence test in lieu of an NPSH test. Sea water intake pumps shall be tested for both NPSH and minimum submergence. (5) All certified and witnessed pump performance/running tests shall be conducted using calibrated drivers. (6) NPSHR testing shall be performed for all high energy pumps, as defined in API STD 610 paragraph 5.1.17 and on all pumps where the NPSH margin (NPSHA over NPSHR) at 120% of the rated flow is less than 3 feet.

Page 31 of 35



Appendix A – Centrifugal Pump Selection Guide Sheet 1 of 2, Attachment to SAES-G-005

Driver ≤ 37 KW (50 HP) in Domestic sewage or community water?

N

Y

Hydrocarbon Service?

Go to Sheet 2

START HERE

Y

N N

Y

Rich Amine/DGA Service ?

Amine, DGA & TEG Service?

Y

N Y

Domestic sewage or sewage effluent service? N SAES-G-005 compliance is not required. If self priming pump type is used, the following shall apply: • Suction lift shall not be more than 6 meters (20 feet). • Automatic air release valve or continuous bleed with orifice shall be provided upstream the check valve in the discharge piping.

Y Sulfur Service?

N PUMP SHALL COMPLY WITH NFPA 20 & SAES-B-017 OR B-009 (refer to SAES-G-005 Para 4.1.1.1)

Y Fire Water Service?

N Y

Y

Driver nameplate is less than or equal to 110 KW (150 HP)?

Caustic, acid or sour water service?

N

N

PUMP SHALL BE SEALLESS TYPE (refer to SAES-G-005 Para 4.1.1.6)

Driver nameplate exceeds 250 HP?

Y

Space limitation does not permit Horizontal installation?

N Y

Between bearing single stage or vertical suspended pump type?

N Suction conditions prohibit the use of horizontal pump?

Y Utility Water Service?

N

Y

N

N Discharge Pressure exceeds 275 psig?

Y

Y

N Suction Pressure exceeds 75 psig?

Y

VERTICAL IN-LINE PUMP COMPLYING WITH 31-SAMSS-004

Y

VERTICAL SUSPENDED OR DOUBLE CASING PUMP COMPLYING WITH 31-SAMSS-004

N

Space limitation does not Permit Horizontal installation?

Y

Liquid Temp. less than 32 or higher than 250°F?

N

N Suction conditions prohibit the use of horizontal pump? Use vertical lined shaft Pump type

Liquid Vapor Press ≥ 30 psia @ max. Operating temp?

Y HORIZONTAL PUMP COMPLYING WITH 31-SAMSS-004

N

N

Driver nameplate exceeds 110 kW (150 HP)?

Y

API

N

PUMP SHALL BE VENDOR STANDARD DESIGN

HORIZONTAL END SUCTION PUMP COMPLYING WITH ASME B73.1, ISO 2858 & ISO 5199

VERTICAL IN-LINE PUMP COMPLYING WITH ASME B73.2 OR ISO 5199

ASME/ISO

Page 32 of 35



Appendix A – Centrifugal Pump Selection Guide Sheet 2 of 2, Attachment to SAES-G-005

From Sheet 1

N

Lube Oil Service?

Y

Open Sump Service?

Y

Suction lift is more than 20 ft?

N

Y

N

N

Horizontal Self-Priming pump can meet the operating conditions?

N

Driver nameplate exceeds 110 kW (150 HP)?

Y Y Y Discharge Pressure exceeds 275 psig?

Vertically suspended pumps in oily water or storm water services ?

Y

N Y

N Suction Pressure exceeds 75 psig?

N

PUMP SHALL BE HORIZONTAL SELFPRIMING TO VENDOR STANDARD DESIGN

Y Driver nameplate exceeds 110 kW (150 HP)? N Y Liquid Temp. less than 32 or higher than 150°F?

N Y

Liquid Vapor Press ≥ 25 psia at max. operating temp Deg. F? N


Y

N Y


ASME/ISO VERTICAL IN-LINE PUMP COMPLYING WITH ASME B73.2 OR ISO 5199

Suction conditions prohibit the use of horizontal pump? N

N

HORIZONTAL END SUCTION PUMP COMPLYING WITH ASME B73.1, ISO 2858 and ISO 5199

Y

HORIZONTAL PUMP COMPLYING WITH 31-SAMSS-004

VERTICAL IN-LINE PUMP COMPLYING WITH 31-SAMSS-004

API VERTICAL SUSPENDED WITH DISCHARGE THROUGH THE COLUMN OR DOUBLE CASING PUMP COMPLYING WITH 31-SAMSS-004

VERTICAL SUSPENDED WITH DISCHARGE THROUGH THE COLUMN DESIGN TO VENDOR STANDARD DESIGN

Page 33 of 35



Appendix B – Typical Drawing of Bleed Bushing Design Attachment to SAES-G-005, 21 July 2009

Page 34 of 35



Appendix C – Minimum Flow Recycle Requirement Guide Sheet 1 of 1, Attachment to SAES-G-005

Yes

Pump rated HP  1000 No Yes Pump rated HP  250

Boiler Feed Water or Services with Yes S.G. < 0.6

Yes

No No Potential of Low Flow *?

No

No Recycle Line Required

Yes

Two Pumps or more continuously running in parallel?

Yes

No

Design for Common Recycle Line

Design for Individual Recycle Lines

(*) Recycle line is required to protect the pump if there is a potential for running below the minimum continuous stable flow due to process conditions or due to difference in running speeds for pumps running in parallel. General Notes: (1) When a minimum recycle line is specified for pumps with driver rating more than 50 HP, the recycle line shall have a control valve. For pumps with diver rating less than 50 HP, a minimum flow control orifice may be used if it is justified economically and is concurred to by the Standard Committee Chairman; Pumps, Seals and Mixers. (2) The requirement for minimum flow recycle may be waived, subject to concurrence by the operating department and the Standard Committee Chairman; Pumps, Seals and Mixers, when all of the following conditions are met: a) b) c) d)

There is no process need or potential of running at low flow Operational requirements are flexible enough to permit process interruption and pump shutdown The recycle line is not needed to start-up or switch-over the pumps Adequate pump protection is provided to shutdown the pump at low flow conditions.

(3) Low lift pumps and other pumps on un-pressurized service, do not require minimum flow recycle lines. (4) This appendix represents the minimum standard requirement. If the process conditions require the use of individual recycle lines, then individual recycle lines shall be provided even if this does not meet the above flowchart.

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SAES-G-005.pdf

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