Ecp-vst-p-mer-et-001 Technical Specification For Centrifugal Pumps Api 610

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

RELATION OF VERSION

Este documento es propiedad de ECOPETROL S.A. no debe ser copiado, reproducido y/o circulado sin su autorización This document is property of ECOPETROL S.A. it shall not be copied, reproduced and/or circulated without authorization

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

TABLE OF CONTENTS

Page. 1. OBJECT ............................................................................................................................................................................... 3 2. SCOPE ................................................................................................................................................................................. 3 3. GLOSARY ............................................................................................................................................................................ 4 4. DOCUMENT ABOLISHED ................................................................................................................................................... 4 5. REFERENCE SPECIFICATIONS ........................................................................................................................................ 4 6. GENERAL CONDITIONS..................................................................................................................................................... 6 6.1. DISTRIBUTION, APPLICABILITY AND REGULATORY CONSIDERATIONS ................................................................. 6 6.2. CROSS REFERENCES ..................................................................................................................................................... 6 7. DEVELOPMENT .................................................................................................................................................................. 6 8. REGISTER ......................................................................................................................................................................... 40 9. CONTINGENCY ................................................................................................................................................................. 40 10. BIBLIOGRAPHY ................................................................................................................................................................ 40 11. APPENDIX ......................................................................................................................................................................... 41

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

1. OBJECT This document defines the technical specification for centrifugal pumps and the amendments/supplements to API 610 tenth edition.

2. SCOPE A. This standard covers the minimum requirements for centrifugal pumps for heavy duty continuous operation under severe environmental conditions. B. The specific requirements for each system shall be as stated in the Material Requisition, which takes precedence over this specification. Vendor’s quotation shall list all deviations to this specification and requirements contained in the Material Requisition. Alternative designs to that specified in the Material Requisition and this specification may be proposed in addition to a fully compliant bid, if there is significant process, price, delivery date advantage or a system with improved life cycle value is offered with demonstrable successful field experience. C. Compliance with this standard does not relieve the manufacturer or the vendor of the responsibility for furnishing equipment of proper design and construction and fully suitable for all specified operating conditions. In case of conflict between this specification and inquiry or purchase order, the order of precedence shall be used for resolving conflicts: 1) 2) 3) 4) 5)

Local governmental and statutory regulations and laws Purchase order or inquiry Project Data Sheets and Drawings This specification Referenced documents, codes and industry standards

In the event of conflict between documents, the manufacturer shall notify the purchaser in writing of any conflict(s) for resolution. D. Vendor furnished data, drawings and documents shall be furnished in the ―English language‖ during execution of the purchase order. Installation, operation and maintenance manuals shall be issued in both the ―English‖ and ―Spanish‖ language. This Specification specifies requirements and gives recommendations for centrifugal pumps. This Specification is based on ISO 13709:2003. Appendix I and Appendix II of this Specification amend, supplement and delete various clauses of ISO 13709. NOTE: API 610, 10th edition, is identical to ISO 13709:2003. Appendix I of this Specification applies to pumps for non-essential service and to spared pumps for essential service. Appendix II of this Specification applies, in addition to Appendix I, to pumps for vital service and to un-spared pumps for essential service. All clauses of ISO 13709 not modified by this Specification shall remain valid as written. This Specification shall be used in conjunction with data/requisition sheet ECP-VST-P-MER-HD-001 Centrifugal pump process data sheet us customary units API 610.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

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3. GLOSARY For the purposes of this TECHNICAL SPECIFICATION the following definitions shall apply: 

The Contractor is the party which carries out all or part of the design, engineering, procurement, installation, and commissioning or management of a project or operation of a facility. The Principal may sometimes undertake all or part of the duties of the Contractor.



The Manufacturer/Supplier/Vendor is the party which manufactures or supplies equipment and services to perform the duties specified by the Contractor.



The Principal is the party which initiates the project and ultimately pays for its design and construction. The Principal will generally specify the technical requirements. The Principal may also include an agent or consultant, authorized to act for the Principal.



MR is Material Requisition.



The word shall indicates a requirement.



The word should indicates a recommendation.

4. DOCUMENT ABOLISHED 

JI 16-4-3 Rev. 6 Technical Specification for Centrifugal Pumps.



VRP-DPY-E-504 version 1 & 2 Technical Specification for Centrifugal Pumps.

5. REFERENCE SPECIFICATIONS In this Specification, reference is made to the following publications: NOTE: Unless specifically designated by date, the latest edition of each publication shall be used, together with any amendments/supplements/revisions thereto. ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads — Part 1: Dimensions, tolerances and designation ISO 261, ISO general-purpose metric screw threads — General plan ISO 262, ISO general-purpose metric screw threads — Selected sizes for screws, bolts and nuts ISO 281, Rolling bearings — Dynamic load ratings and rating life ISO 286 (all parts), ISO system of limits and fits ISO 724, ISO general-purpose metric screw threads — Basic dimensions ISO 965 (all parts), ISO general-purpose metric screw threads — Tolerances ISO 1940-1, Mechanical vibration — Balance quality requirements of rigid rotors — Part 1: Specification and verification of balance tolerances ISO 4200, Plain end steel tubes, welded and seamless — General tables of dimensions and masses per unit length ISO 5753, Rolling bearings — Radial internal clearance ISO 7005-1, Metallic flanges — Part 1: Steel flanges ISO 7005-2, Metallic flanges — Part 2: Cast iron flanges API Standard 610 / ISO 13709

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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ISO 8501 (all parts), Preparation of steel substrates before application of paints and related products — Visual assessment of surface cleanliness. ISO 9906, Rotodynamic pumps — Hydraulic performance acceptance tests — Grades 1 and 2 ISO 10436, Petroleum and natural gas industries — General-purpose steam turbines for refinery service ISO 10438 (all parts), Petroleum and natural gas industries — Lubrication, shaft-sealing and control-oil systems and auxiliaries ISO 10441, Petroleum and natural gas industries — Flexible couplings for mechanical power transmission Special purpose applications ISO 11342, Mechanical Vibration — Methods and criteria for the mechanical balancing of flexible rotors ISO 14691, Petroleum and natural gas industries — Flexible couplings for mechanical power transmission General purpose applications ISO 15649, Petroleum and natural gas industries — Piping ISO 21049:2004, Pumps — Shaft sealing systems for centrifugal and rotary pumps IEC 60034-1, Rotating electrical machines — Part 1: Rating and performance IEC 60079 (all parts), Electrical apparatus for explosive gas atmosphere EN 287 (all parts), Approval testing of welders — Fusion welding 1) EN 288, Specification and approval of welding procedures for metallic materials EN 13445 (all parts), Unfired pressure vessels ABMA 7, Shaft and housing fits for metric radial ball and roller bearings 2) AGMA 9000, Flexible couplings — Potential unbalance classification 3) AGMA 9002, Bores and keyways for flexible couplings (inch series) API 541, Form-wound squirrel-cage induction motors — 250 horsepower and larger API 611, General purpose steam turbines for refinery service API 670, Noncontacting vibration and axial position monitoring system API 671, Special-purpose couplings for refinery service API 677, General-purpose gear units for petroleum, chemical and gas industry services ASME B1.1, Unified inch screw threads, UN and UNR thread form 4) ASME B15.1, Safety standard for mechanical power transmission apparatus ASME B16.1, Cast iron pipe flanges and flanged fittings classes 25, 125 and 250 ASME B16.5, Pipe flanges and flanged fittings NPS 1/2 through NPS 24 ASME B16.11, Forged fittings, socket-welding and threaded ASME B16.42, Ductile iron pipe flanges and flanged fittings classes 150 and 300 ASME B16.47, Large diameter steel flanges NPS 26 through NPS 60 ASME B17.1, Keys and keyseats ASME, Boiler and pressure vessel code, Section V, Nondestructive examination ASME, Boiler and pressure vessel code, Section VIII, Pressure vessels ASME, Boiler and pressure vessel code, Section IX, Welding and brazing qualifications AWS D1.1, Structural welding code — Steel DIN 910, Heavy-duty hexagon head screw plugs HI 1.3, Centrifugal pumps — Horizontal baseplate design HI 1.6, Centrifugal pump test HI 2.6, Vertical pump test IEEE 841, Standard for petroleum and chemical industry — Severe duty totally enclosed fan-cooled (TEFC)squirrel cage induction motors — Up to and including 370 kW (500 hp) MSS-SP-55, Quality standard for steel castings for valves, flanges and fittings and other piping components — Visual method for evaluation of surface irregularities 9) NACE MR0175, Sulfide stress cracking resistant metallic materials for oilfield equipment item No. 21304 NFPA 70, National electrical code handbook SSPC SP 6, Surface Preparation Specification

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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6. GENERAL CONDITIONS 6.1. DISTRIBUTION, APPLICABILITY AND REGULATORY CONSIDERATIONS Unless otherwise, the distribution of this Specification is confined to ECOPETROL S.A and, where necessary, to Contractors and Manufacturers/Suppliers nominated by them. This Specification is intended for use in oil refineries, gas plants, chemical plants and oil and gas production facilities. When Specifications are applied, a Management of Change (MOC) process should be implemented; this is of particular importance when existing facilities are to be modified. If national and/or local regulations exist in which some of the requirements may be more stringent than in this Specification, the Contractor shall determine by careful scrutiny which of the requirements are the more stringent and which combination of requirements will be acceptable with regards to the safety, environmental, economic and legal aspects. In all cases the Contractor shall inform the Principal of any deviation from the requirements of this Specification which is considered to be necessary in order to comply with national and/or local regulations. The Principal may then negotiate with the Authorities concerned, the objective being to obtain agreement to follow this Specification as closely as possible. 6.2. CROSS REFERENCES Where cross-references to other parts of this Specification are made, the referenced section number is shown in brackets. Other documents referenced by this Specification are listed in (Part 5).

7. DEVELOPMENT APPENDIX I. PUMPS FOR NON-ESSENTIAL SERVICE AND SPARED PUMPS FOR ESSENTIAL SERVICE (AMENDMENTS/SUPPLEMENTS TO ISO 13709:2003) 1. SCOPE 

ADD TO THIS CLAUSE:

Part II of this Specification applies to pumps for non-essential service and to spared pumps for essential service. 3. DEFINITION OF TERMS 

ADD TO THIS CLAUSE:

3.29. Net positive suction available (NPSHa) 

NPSHA is determined at the shaft centerline for horizontal pumps.



For vertical pumps it is determined at:

-

(1) Centerline of suction nozzle for vertical in-line pumps.

-

(2) Centerline of suction nozzle for vertical canned pumps (Secondary NPSH values may be specified to be stated by vendor for the lowest pressure point inside the can and/or at the eye of the first stage impeller).

-

(3) Eye of the first stage impeller for vertical pumps with open suctions.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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ADD NEW CLAUSE:

3.60. Continuous operation Uninterrupted operation for a period of at least 24000 h at the specified operating conditions. NOTE: This does not include intermittent operations such as: -

Pumps started and stopped automatically at intervals by process-operated controls;

-

Pumps started up and stopped manually for batch transfer.



ADD NEW CLAUSE:

3.62. Multi-stage pumps Pumps with three (3) or more stages. 

ADD NEW CLAUSE:

3.63. Abrasive service Service in which there is an expected wear rate of 0.1 mm (0.004 in) or more per year, or where hard particles larger than 100 m (0.004 in) exist in quantities exceeding 100 mg/kg (100 ppm or 0.0016 oz/lb). 

ADD NEW CLAUSE:

3.64. Vital, essential and non-essential services These terms are defined as follows:

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

SAFETY EQUIPMENT

VITAL

Definition

A service in which failure of equipment causes an unsafe condition of the plant or installation resulting in jeopardy to life and/or major damage (fire, explosion etc.).

- Firewater pumps with diesel and motor drives;

Examples

- Emergency Shutdown systems;

(ESD)

- Emergency Instrument Air (EIA) compressor.

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OTHER EQUIPMENT SERVICE CATEGORY ESSENTIAL Non-spared Spared equipment equipment A service in which A service in which failure of failure of equipment equipment renders renders a plant or a plant or process process unit unit inoperable or inoperable or reduces reduces performance to a performance to a level level unacceptable unacceptable to to the Principal. the Principal. - Hydrocracker (HCU) feed pump; - Boiler Feedwater - HCU recycle (BFW) pumps; compressor; - Fractionator’s - Cat Cracker bottom pumps; (FCCU) main air compressor; - Fresh gas compressors - Forced Draft (FD) (HCU). and Induced Draft (ID) fans.

NON-ESSENTIAL

All other services.

-

Drinking pumps;

water

-

Sewage pumps.

4. CLASSIFICATION AND DESIGNATION 4.2. PUMP DESIGNATIONS 

ADD NEW CLAUSE

4.2.3. Pump type OH3 shall not be used, unless otherwise is specified in the Data Sheet and write approved by the Principal. 

ADD NEW CLAUSE:

4.2.4. Pump type OH4 shall not be used 

ADD TO THIS CLAUSE:

4.2.5. Pump type OH5 shall not be used

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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ADD TO THIS CLAUSE

4.2.10. Pump type BB4 shall not be used 4.3. UNITS AND GOVERNING REQUIREMENTS 

ADD TO THIS CLAUSE:

4.3.1 Equipment dimensional units of measure shall be in mm, and other units of measure shall be a combination of SI and U.S. Customary as shown below.         

Shaft power: hp Flange dimensions: inches Weight: lb and short tons Forces: lb Moments: lb-ft Pressure: psia, psig Temperature: ºF Bolts: inches Bolt Holes: inches

5. BASIC DESING 5.1. GENERAL 

ADD TO THIS CLAUSE:

5.1.6. Pumps with constant speed drivers shall have impeller diameters such that at least 5% increase in head at the rated capacity can be obtained by installing a larger diameter impeller of the same pattern. 

REPLACE THIS CLAUSE BY

5.1.10. The Net Positive Suction Head Required (NPSHR) shall be based on water [at a temperature of less than 65 °C (150 °F)] at the rated flow and rated speed; no reduction or correction factors shall be applied for other liquids. The Net Positive Suction Head Available (NPSHA) shall exceed the Net Positive Suction Head Required (NPSHR) by at least 1 m (3.3 ft) throughout the range from minimum continuous stable flow up to and including the rated capacity, and by 0.3 m (1 ft) at 120 % of rated flow. If the suction pressure at the pump is less than atmospheric, the Net Positive Suction Head Available (NPSHA) shall exceed the Net Positive Suction Head Required (NPSHR) shall be at least 2 m (6.5 ft). From rated capacity up to 125% of best efficiency point the NPSHR shall not exceed the NPSHA. For liquids containing dissolved gases, to avoid cavitation damage due to vapour-induced flow path restrictions, NPSHA shall be 1.5 x NPSHR, with a minimum margin of 5 m (15 ft) between NPSHA and NPSHR.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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ADD TO THIS CLAUSE (Numeral 5.1.11)

5.1.11. Suction specific speeds shall be no greater than 11000 unless approved by the Principal. For the heater charge pump and decoking (jet) pump, Nss value should not exceed 9,500. For first stage of boiler feed water pump, Nss value should not exceed 9,000. NOTES: 1. The above value is 11000 when calculated using the following US Customary units:    

Rotative speed expressed in revolutions per minute; Flow rate expressed in U.S. gallons per minute; NPSHR expressed in feet.

REPLACE THE FIRST SENTENCE OF THIS CLAUSE BY:

5.1.13. Pumps shall have stable head/capacity curves which continuously rise by at least 5 % from rated capacity to shut-off. The gradient of the tangent to the curve shall continuously decrease from 125 % of the best efficiency point to minimum continuous stable flow and shall remain positive. Modify Change "preferred" to "mandatory" in the first sentence. Replace the second sentence with, "The pump head at shut-off shall be approximately 110%, but not exceed 120%, of the head at the specified capacity point. Low capacity, high head pumps may be exempt from these requirements with Purchaser’s approval. Sump pumps shall be capable of generating the specified discharge pressure at minimum sump liquid level. Pumps operating in parallel shall have equal head rises (within 1% as measured on the performance test) from normal capacity to shutoff. 5.1.14. Add the Vendor shall state in the proposal the minimum continuous flow for each pump and indicate if the minimum continuous flow is due to temperature, NPSH required or another parameter. The vendor shall provide the characteristic curves for head, NPSH, efficiency and power for the complete set of impellers available for the casing. The vendor shall indicate in those curves: rated point, Best Efficiency Point (BEP), preferred operating region and allowable operating region. Pump shaft and bearing design shall also take into consideration the hydraulic forces occurring during operation between the duty point and minimum flow. 5.1.15. Add Location of the Rated Capacity (LRC), calculated as the rated capacity divided by capacity at BEP for the furnished impeller, shall be in the range : 80% <= LRC <= 110%, except upper range is established in the Data Sheet. 5.1.16. Substitute The equipment furnished by the vendor shall conform to the maximum allowable Sound Level of 85 db @ 3.3 ft (1m). The vendor shall submit guaranteed sound power levels and sound pressure levels (including octave band spectrum) of the equipment, together with any other relevant information 9Refer to Purchaser noise data sheet. The vendor shall indicate what special silencing measures, if any, are proposed in order to meet specified levels.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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5.1.16.1. Information to be submitted with the tender: The Vendor shall submit guaranteed sound power levels and sound pressure levels (including octave band spectrum) of the equipment, together with any other relevant information as requested in the data sheet. The Vendor shall indicate what special silencing measures, if any, are proposed in order to meet the specified levels. 

ADD TO THIS CLAUSE:

5.1.17. The numbers of vanes in impellers shall be different to the numbers of vanes in diffusers. On pumps with two or more stages impellers/diffuser configuration shall be staggered to avoid coincidence of pressure pulses. 

REPLACE THE FIRST SENTENCE OF THIS CLAUSE BY:

5.1.19. ADD The vendor shall identify in the proposal any cooling required. Fan cooling should be the first choice. If fan cooling is inadequate, one of the plans in Annex B shall be selected. 

REPLACE THIS CLAUSE BY:

5.1.20. Substitute Cooling/Heating jackets for seal chambers, bearings and pedestals shall be integrally cast or of welded design. The coolant passage shall allow cleaning, flushing and draining of the entire passageway. Only cooling chambers for bearing brackets may be equipped with O-ring sealed covers to facilitate cleaning. 

REPLACE THIS CLAUSE BY:

5.1.26. All major joints shall make up metal-to-metal. Pump designs which require gauging for parallelism shall not be used. 

ADD TO THIS CLAUSE:

5.1.30. For marine applications, the vendor shall state the maximum inclination at which the pump can operate. 

ADD NEW CLAUSE:

5.1.32. For balancing axial thrust in multi-stage pumps, only the following arrangements shall be used, either alone or in combination: -

Individually-balanced impellers or opposed arrangements of impellers;

-

A balancing piston (except that this shall not be used if the pump is for abrasive service (see 3.63).

-

Balance disk or combinations with a balance disk shall not be used.

A balancing piston shall not be used if the pumped liquid is abrasive as defined in (3.63). 5.1.33. New Impeller reduction below 80% of maximum diameter is not acceptable. Impeller reduction is an index relating the design diameter (rated flow) and the maximum diameter of the impeller. 5.1.34. New The size of the selected impeller must not be the maximum designed for the casing, except for pumps with variable speed drivers. The size of the selected impeller must not be the minimum designed for the casing, for any case.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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5.3. PRESSURE CASINGS 5.3.6. All parts referred to in the definition of pressure casing (3.42) shall have the same MAWP. 5.3.5. Add The maximum allowable working pressure shall apply to all parts referred to in the definition of pressure casing (see 3.42). 5.3.8. Modify After "maximum differential pressure" add: "inclusive of the additional differential pressure resultant from the allowance applied in the definition of "maximum allowable working pressure" of the casing in API 610 Para. 5.3.5. 5.3.9. Replace subclause a) BY a) A pumping temperature of 100 °C (200 °F) or higher, unless approved by the Principal. 5.3.9. Modify

Replace clause a) by: A pumping temperature of 100 °C (212 °F) or higher.

5.3.15. Add

Cadmium-plated and/or galvanized fasteners in contact with stainless steel are not acceptable.

5.4. NOZZLE AND PRESSURE CASING CONNECTIONS 5.4.1.1. Substitute

All pumps shall have flanged suction and discharge nozzles of equal ASME pressure/temperature ratings. Screw-on flanges shall not be used. Horizontal pumps with an operating temperature above 200 °C (392 °F)shall have top suction and discharge nozzles, unless otherwise is specified in the Data Sheet.

5.4.2. Suction and discharge nozzles 

REPLACE THIS CLAUSE BY:

5.4.2.1. All pumps shall have flanged suction and discharge nozzles of equal ASME pressure/temperature ratings. 

REPLACE THIS CLAUSE BY:

5.4.2.2. Cast iron shall not be used. 5.4.3. Pressure casing connections 

REPLACE THIS CLAUSE BY:

5.4.3.1. Threaded connections to the pressure casing shall not be used, except that the seal gland connection may be threaded. 

REPLACE THIS CLAUSE BY:

5.4.3.4. All auxiliary connections to the pressure casing shall be fitted with flanged stubs. Integral flanges may be used. If the pump nozzles are Class 900 or above, or the pumping temperature is 0 °C (32 °F) or below, or if the pump is for hazardous service, or if ISO 15156 or NACE MR0103 or NACE MR0175 is applicable, then socket welded connections shall not be used. In these cases full penetration butt welded connections are required.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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ADD TO THIS CLAUSE:

5.4.3.6. Valves shall not be welded to the pump 

REPLACE THE FIRST SENTENCE OF THIS CLAUSE BY:

5.4.3.7. Openings shall not be furnished unless they are essential, in which case they shall be located away from highvelocity areas. The provision and location of openings shall be identified in the vendor’s proposal and shall be subject to the approval of the Principal. All openings furnished and not connected to piping shall be closed with a flange in accordance with (5.4.3.4). 5.4.3.10. Modify replace the first sentence by: All pumps shall be provided with casing drain connection(s) flanged and valved with blind counter flange (extended to terminate at baseplate edge). All pumps shall be provided with casing vents, valved (with globe valve) and flanged with blind counter flange. Pressure gauge connections shall not be provided. 

ADD TO THIS CLAUSE: Balance lines and their connections shall be flanged. Unions shall not be used.

5.5. EXTERNAL NOZZLE FORCES AND MOMENTS 5.5.6. New

In order to provide maximum resistance to mechanical forces transmitted by the pipework in duties at a service temperature above 200 °C (392 °F), the vertical projection of the centerlines of the principal nozzles of pumps shall pass within the pump casing support boundaries. A separate extended suction nozzle support beside each pump pedestal is not acceptable.

5.6. ROTORS 5.6.1. Add



For abrasive and slurry services, the impellers shall be of the enclosed high efficiency slurry design, equipped with repelling vanes on both the front and back shrouds; in which case the Manufacturer shall demonstrate reliability of the pump design in comparable duties.

REPLACE THE THIRD SENTENCE OF THIS CLAUSE BY:

5.6.3. Collets shall not be used in vertical pumps. 5.6.3. Add

Impellers for multistage pumps shall be individually secured against axial movement in either direction along the shaft. An interference fit is not considered a positive axial locking method.

5.6.4. Substitute 5.6.9. Add 

Impellers shall have solid hubs. Impellers made from a cored pattern are not acceptable.

Single-stage overhung pumps (types OH2) with impellers 15 in (381 mm) or larger in diameter at nominal rotative speed of 3600 rpm or more, is not acceptable without approval from Purchaser.

REPLACE THE LAST SENTENCE OF THIS CLAUSE BY:

5.6.11. The use of target rings requires the approval of the Principal.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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ADD NEW CLAUSE:

5.6.16. Shafts and impellers shall not be plated for repair purposes. Repairs to rotating elements shall be subject to review and approval by the Principal. 5.7. WEAR RINGS AND RUNNING CLEARANCES 5.7.1. Substitute



Radial running clearances shall be used to limit internal leakage and, where necessary, balance axial thrust. Impeller pumping vanes or close axial clearances shall not be used to balance axial thrust. Renewable wear rings shall be provided on both casing and impellers. For abrasive and slurry services, when the pump design incorporates the repelling/pumping vanes, wear rings and wear ring flush can be eliminated; in which case the Manufacturer shall demonstrate reliability of the pump design in comparable duties and requires the Purchaser’s approval, unless otherwise is specified in the Data Sheet.

ADD TO THIS CLAUSE:

5.7.2. The minimum hardness of wear rings shall be 250 HBW except where restricted by Appendix 1 of this Specification. 

ADD TO THIS CLAUSE:

5.7.3. Substitute

5.7.4. Modify

Renewable wear rings shall have a shrink fit and shall be locked by three axial set screws. Other methods, including tack welding (at three points) require the Purchaser’s approval. Wear rings shall not be U-shaped. Add to the clause a): Special wear ring constructions, including provisions for clean fluid flushing, may be considered for pumps in abrasive service (3.63); in which case the Manufacturer shall demonstrate reliability of the pump design in comparable duties.

Replace the last sentence of clause b) by: For materials with higher galling tendencies, and/or for operation at temperatures above 500°F (260°C), 0.012‖ (0.305 mm) shall be added to these diametral clearances. 5.8. MECHANICAL SHAFT SEALS 

REPLACE THIS CLAUSE BY:

5.8.1. All mechanical seals shall be in accordance with ECP-VST-P-MER-ET-002, TECHNICAL SPECIFICATION FOR SHAFT SEALING SYSTEMS FOR CENTRIFUGAL AND ROTARY PUMPS (AMENDMENTS/SUPPLEMENTS TO ISO 21049:2004)

All hydrocarbon-service pumps shall have an "antisparking" throttle bushing, with quench and drain connections, between the last seal and the atmosphere. To ensure selection of the optimum mechanical seal and seal auxiliary facilities for the duty specified, the pump manufacturer shall be responsible for the engineering coordination, installation and performance of its auxiliary facilities such as circulation, injection, quenching and cooling, as required for the seal selected by the seal manufacturer. 5.8.2. ADD TO THIS CLAUSE: … except for vertical pumps.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

5.8.4. Add to this clause: The seal gland bolts shall be the same material of seal gland. 5.9. DYNAMICS 5.9.2. Torsional analysis 

ADD TO THIS CLAUSE:

5.9.2.1. Torsional analysis shall be performed if specified by the Principal. NOTE: It is unusual for a torsional analysis to be required for a pump. A torsional analysis and the associated report can be expensive, so caution should be exercised when specifying a torsional analysis. 

REPLACE SUB-CLAUSE d) BY: d) Electric motor with variable frequency drive (VFD) rated at 500 kW (670 hp) or higher.

5.9.3. Vibration 5.9.3.3. Modify

Replace the last sentence of this clause by: The plotted spectra shall be included with the pump test results.

5.9.3.6. Add

These criteria apply from the Vendor's quoted minimum continuous stable flow up to the rated flow, for factory testing and for initial operation onsite.



ADD TO THIS CLAUSE:

5.9.3.6 For vertical, close-coupled, in-line pumps vibration readings shall be taken on both bearings for the electric motor driver in the horizontal plane at 90 to each other. For vertical pumps with a flexible coupling additional readings shall be taken at the pump top bearing. 5.10. BEARINGS AND BEARING HOUSINGS 5.10.1. Bearings 5.10.1.1. Add

Hydrodynamic bearings shall be used for any of the following conditions: a. Journal sizes greater than 150 mm. (5.9―). b. If the lubricant supply is force-feed.

5.10.1.3. ADD SUB-CLAUSE e): e) Non-metallic cages shall not be used. 

Table 9

ADD SUB-CLAUSE d):

d) Journal sizes greater than 150 mm (6 in). 5.10.1.5. Add

"Back to Back" installation is the same as bearings fitted in "0" arrangement. See Figure 1 below.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

Figure 1. Back-to-back or "0" arrangement

5.10.1.7. New

Rolling element bearings shall have brass cages, or another metal if this is not possible.

5.10.2.2. Add

Constant level oilers shall be "TRICO Optimatic".

5.10.2.7. Modify

Change the words: ―Non-sparking material‖ for ―spark resistant materials‖.

5.10.2.11. Substitute

Bearing Housings shall have a threaded connection(s) provided with plug at the locations shown on figures 27 and 28 for mounting vibration transducers in accordance with API-670. When metric fasteners are supplied, the threads shall be M8.

5.10.2.12. Substitute A flat surface at least 25 mm (1‖) in diameter shall be supplied for the location of magnetic based vibration measuring equipment. 5.11. LUBRICATION 

REPLACE THIS CLAUSE BY:

5.11.1. Grease lubrication shall not be used. 5.11.3. Substitute 5.11.5. New

Provisions shall be made for future oil mist lubrication (see 5.10.2.8 for requirements).

When specified on the material requisition and/or data sheets, pressure lubrication systems shall comply with job specification General Purpose Lube Oil Systems.

5.12. MATERIALS 5.12.1. General 

REPLACE THIS CLAUSE BY:

5.12.1.1. The materials of construction shall be in accordance with Appendix 1 of this Specification, unless otherwise specified by the Principal.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

5.12.1.1. Add



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Materials not in accordance with Annex G shall be stated in the proposal as a deviation from the specifications. Explanations for deviations and description of successful experiences with the proposed materials in the service quoted shall be included in the proposal. When materials of construction are specified in the Material Requisition, the Vendor shall not make any substitutions without prior written approval of Purchaser.

REPLACE THE FIRST SENTENCE OF THIS CLAUSE BY:

5.12.1.2. The material specification of all components listed in Appendix 1 shall be clearly stated in the vendor’s proposal. Superior or alternative materials, different to those required by Annex H, can be recommended by the manufacturer, and submitted for purchaser approval. Those materials shall be tested in accordance with internationally recognized standard (such as DIN, BS, AFNOR, UNI, JIS, etc.).When Vendor's quoted material specifications are one of these recognized international standards, the proposal shall indicate the nearest U.S.A. specification equivalent, along with exact and specific deviations (chemical properties, physical properties, tests, etc.). 5.12.1.2.1. New

For abrasive and slurry services, when required in the data Sheets, a Fully Lined Slurry Pump shall be provided. In this case, lining with plasma spray and diffusion coatings are not acceptable, instead the casing shall be fully protected by a set of internal removable liners: 

Liners shall be removable without disturbing the suction and discharge piping.



The liners shall be mechanically fastened to the outer casing using steel fasteners.



The internal liners shall be provided in abrasion resistant material (25% chrome iron per ASTM A- 532, Class III, Type "A" or equivalent), for abrasive and corrosive environments existing simultaneously.



Each liner shall be machined to a 64 RMS finish opposite the impeller shrouds.

5.12.1.4. DELETE THIS CLAUSE. 5.12.1.6. DELETE THIS CLAUSE. 5.12.1.8. Substitute

For pumps working at temperatures between –20°F to 750°F (-30°C to 400°C) , or Pressures between 0 to 1300 psig (0 to 90 barg) the Vendor shall furnish material certificates in accordance with ISO 10474, of the type indicated in Table 1 for inspection class II. For pumps working out of these ranges, all certificates shall be 3.1.B according to inspection class I.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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Versión: 1

Table 1. Material Certificates

PART Pressure casing (including bolting) Auxiliary process fluid piping (including all pressure-containing components such as fittings, valve bodies etc.) Impeller/shaft Sleeves Wear rings Throttle bushings Mechanical seals Diffusers

INSPECTION CLASS II I ISO 10474 CERTIFICATE TYPE 3.1.B 3.1.B 3.1.B

3.1.B

3.1.B 3.1.B 3.1.B 2.1 2.1 2.1

3.1.B 3.1.B 3.1.B 3.1.B 3.1.B 3.1.B

Marking is required for all pressure casings. Only low-stress stamps (dot-type or round-nosed with a minimum radius of 0.25 mm) shall be used for hard-die stamping. For items manufactured from austenitic stainless steel or nickel alloys the marking shall be applied by stencil using a water-insoluble ink which contains no injurious substances such as metallic pigments, sulphur, sulphides or chlorides which could attack or harmfully affect the material. The stamping/marking shall include: 

Material manufacturer's symbol identical to the symbol on the material certificate;



Material identification;



Heat, charge or batch number to relate to the material certificate;



Heat treatment symbol or code, where applicable;



Non-destructive testing symbol or code, where applicable;



Size and schedule, where applicable;



Hydrostatic test pressure, where applicable.

NOTE: If the size of the item does not permit complete marking, the above identification marks may be substituted by a unique code, which is fully traceable to the material certificate for the item. 5.12.1.12. ADD THIS CLAUSE BY:

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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All materials for components exposed to hydrogen sulphide in concentrations exceeding 100 mg/kg (100 ppm) or exceeding the limits prescribed by ISO 15156 or NACE MR0103 (as applicable) shall conform to the reduced hardness requirements of ISO 15156 or NACE MR0103 (as applicable) as well as the requirements of Appendix 1. Renewable wear rings which, for proper pump performance, must be hardened above the limits of ISO 15156 or NACE MR0103 (as applicable) are acceptable. If approved by the Purchaser, instead of furnishing renewable wear rings, wear surfaces may be hardened by the application of a suitable coating. All external bolting on the casing and seal glands shall also conform to the above requirements even if ISO 15156 or NACE MR0103 (as applicable) restricts the requirement to enclosed bolting. NOTES: 1. ISO 15156 shall apply to oil and gas production facilities and natural gas sweetening plants. NACE MR0175 is equivalent to ISO 15156. 2. NACE MR0103 shall apply to other applications (e.g. oil refineries, LNG plants and chemical plants). 5.12.1.15. New

Use of asbestos, asbestos compounds and polychlorinated byphenyls (PCBs) is not acceptable. All equipment shall be new and unused.

5.12.2. Castings 5.12.2.2. Add

Chaplets in casings other than cast iron not completely fused into pressure casings or other defects shall be replaced by weld metal equivalent to the casing composition. No other repair method is permitted.

5.12.2.3. ADD TO THIS CLAUSE: Repairs may be made by welding or plugging only if permitted by the material specification, and then only in accordance with the procedures detailed below. 

ADD TO SUB-CLAUSE a):

Prior to performing any weld repair on wrought material or any major* weld repair on cast material, the Manufacturer shall submit details of the proposed weld repairs for Purchaser's approval, along with the relevant WPS (Welding Procedure Specification) and PQR (Procedure Qualification Record). After weld repair the material shall be suitably heat-treated if required by the relevant material specification. A major* weld repair shall be followed by a suitable heat treatment. Details of all major* weld repairs, and of the heat treatment where applicable, shall be recorded on a drawing and reported to the Purchaser. *NOTE: Weld repair of a casting is defined as "major" if a repair weld has a depth of more than 50 % of the wall thickness or has a length of more than 150 mm (6 in) in one or more directions, or if the total surface area of all repairs on the casting exceeds 10 % of the total casting surface area. A weld repair necessitated by a leaking pressure test is also classed as "major". 

ADD TO SUB-CLAUSE b):

Details of all repairs shall be recorded on a drawing and reported to the Principal, who shall be informed of the need for plugging before any repair is carried out.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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5.12.4. REPLACE THIS CLAUSE BY: The minimum temperature for which the equipment has to be suitable (under any operating or upset conditions) shall be specified on the data/requisition sheet. 5.12.4.5b. Add

If UG-84 requires impact testing, the tests shall conform to ASTM E23.

5.13. Nameplates and rotation arrows 5.13. Add Nameplate shall be in Spanish or English language and present U.S. units between brackets.

6. ACCESSORIES 6.1. DRIVERS 6.1.4. Modify



Purchaser will specify on the material requisition or/and data sheets the approved motor manufacturers and the type of motor, its characteristics and the accessories, including but not limited to the following:

ADD NEW CLAUSE:

6.1.11. Internal combustion engines shall comply with EEMUA 107 if located in an area classified as Zone 1 or Zone 2. 6.2. Couplings and guards 6.2.1. Add

Coupling shall be non-lubricated multiple discs type; the flexible discs shall be 18 Cr-8 Ni Stainless Steel. Coupling shall be designed to retain the spacer in case of discs failure.

6.2.2. ADD TO THIS CLAUSE: f) If the pumping temperature is greater than 200 C (400 F), spacers shall have a minimum length of 125 mm (5 in) to provide greater tolerance for misalignment. 6.2.4. REPLACE THIS CLAUSE BY: Spared pumps do not require couplings that conform to ISO 14691, ISO 10441 or API 671. 6.2.14c. Substitute

Guards shall be fabricated from solid sheet or plate with no openings. Guards fabricated from expanded metal or perforated sheets may be used if the size of the openings does not exceed 10 mm (0,375 in). Guards of woven wire shall not be used. Guards shall be made of one of the following spark-resisting materials:  

Aluminum or aluminum alloys with a maximum content of 2% magnesium or 0.2% copper. Copper or copper based alloys (e.g. brass, bronze).

6.2. BASEPLATES 6.3.3. Modify the last phrase of the first paragraph: This requirement shall be demonstrated and register by the manufacturer in the pump-vendor's shop prior to mounting of the equipment and with the baseplate supported at the foundation bolt holes only. This

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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Versión: 1

demonstration can be performed only when the clamps are released in the milling machine after completion of machining. 6.3.4. Replace this clause by: Shims shall not be used under the pump. All pads for drive-train components shall be machined to allow for the installation of shims at least 3 mm (0,12 in) thick under each component. If the vendor mounts the components, a set of stainless steel shims (shim packs) at least 3 mm (0,12 in) thick shall be furnished. Shim packs shall not be thicker than 13 mm (0,5 in) nor contain more than 3 shims. All shim packs shall straddle the hold-down bolts and vertical jackscrews, and extend at least 5 mm (1/4 in) beyond the outer edges of the equipment feet. If the vendor does not mount the components, the pads shall not be drilled and shims shall be provided. The pads shall be circle drilled. It is no acceptable oval drilled. 6.3.9. ADD THIS CLAUSE BY: Fully grouted baseplate for epoxy grouting shall be used with complete drip pan plate except for grout hole. 6.1.14.1.1. REPLACE THIS FIRST SENTENCES OF THIS CLAUSE BY: Transverse and axial positioning jackscrews shall be provided all drive train components to facilitate transverse horizontal and longitudinal adjustments. 6.3.21. Add

A separate mounting plate shall be supplied with vertical pumps. The plate shall have its grout surface coated with catalyzed epoxy primer over white metal. The top surface shall be machined flat to within one mil per foot for leveling.

6.3.22. Add new clause: The API plan seal system shall be installed in the right side of pump’s base plate, view from driver side. 6.3. INSTRUMENTATION 6.4.1. REPLACE THIS CLAUSE BY: Unless otherwise specified by the Principal, temperature and pressure gauges shall be supplied only if a lube-set is required or if the gauges are required by the seal flush plan. 6.4.2. Add

Provision for future installation of vibration measurement device [one horizontal (X) and one vertical (Y) per bearing, plus one axial] and one temperature monitoring on each bearing is required.

6.4.2.4. Modify

When specified, monitors with connecting cables to vibration, axial position or temperature detectors shall be supplied and installed in accordance with API 670.

6.5. PIPING AND APPURTENANCES 6.5.1. General 6.5.1.1. ADD TO THIS CLAUSE: Pump casing drains shall have a short stub to the first flange, no longer than 15 cm (6 in) and preferably without any bends. The drain line after the first flange shall be supported between the pump and the edge of the baseplate.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

6.5.1.2. ADD TO THIS CLAUSE: Pipe shall be used for auxiliary systems. Seamless pipe of ASTM A 312, Type 316L shall be used if maximum pumping temperature is above 260 °C (500 °F) or if the auxiliary system contains erosive fluid. Referring to Annex H, Table H.5: Type 316 stainless steel (at less) spiral wound gaskets with non-asbestos filler shall be used, for all applications. Pipe shall be used for all auxiliary systems, except for air/water coolers and barrier/buffer gas systems, which may be made using stainless steel seamless tubing. Insulation or guarding shall be provided as an integral part of the auxiliary piping system to provide personnel protection if the non-insulated metal temperature exceeds 70 °C (160 °F) and the auxiliary piping system is in an area where it can be touched during normal operation and maintenance activities. 6.5.1.4. Substitute

6.5.1.5. Add 

Barrier/buffer fluid reservoirs for the API Plan Seal shall be designed for mounting on the pump baseplate. These reservoirs shall be fully assembled.

Vendor shall submit with the proposal schematics of his proposed piping arrangement for Purchaser’s approval.

DELETE THE BULLET AND REPLACE THIS CLAUSE BY:

6.5.1.6. Piping fabrication shall be by welding or bending, with joints provided only where disassembly is necessary for maintenance purposes; such joints shall be flanged. Each piping system shall be manifolded to one purchaser's connection (inlet or outlet); these connections shall be near the edge, and within the confines, of the baseplate.

6.5.1.7. Modify

6.5.1.9. New

After ―Lube Oil Service‖ add, ―shall be A193 bolting B7 or B8 coated with Stand-Cote SC-1 or equal.‖ Delete all remaining text. Piping fabrication shall be by welding or bending, with joints provided only where disassembly is necessary for maintenance purposes. These joints shall be flanged. Screwed connections may be used only for seal gland plates and shall not be seal welded. Pipe bushings and socket welded fittings shall not be used.

6.5.2. Auxiliary process fluid piping 6.5.2.4. ADD TO THIS CLAUSE: If the chloride concentration exceeds this value, the piping or tubing material shall be upgraded to a material resistant to chloride cracking. If the fluid temperature exceeds 60 °C (140 °F) and atmospheric chlorides are present in sufficient quantity to cause chloride cracking of Type 316 SS pipe or tubing (e.g. caused by overspray from a cooling water tower) then piping or tubing material shall be upgraded to a material resistant to chloride cracking. The datasheet shall specify if upgraded materials are required. The Principal’s corrosion engineer shall specify which material is appropriate for the particular flush liquid.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

6.5.2.6. Delete this clause. 6.5.2.8. REPLACE THIS CLAUSE BY: Flanges shall be used instead of socket-welded unions. 6.5.3. ADD TO THIS CLAUSE: Cooling water piping. Use of cooling water for pumps should be minimized. Cooling water should be used only if required by the seal flush plan or if the pumping temperature is greater than 200 C (400 F). 6.5.3.3. REPLACE THIS CLAUSE BY: If cooling water is used, whirling-ball type sight flow indicators shall be used. 6.5.3.2. Add

When tubing is permitted or specified; Swagelok compression type fittings shall be used. Flare type fittings are not acceptable.

7. INSPECTION, TESTING, AND PREPARATION FOR SHIPMENT 7.1. GENERAL 7.1.1. ADD TO THIS CLAUSE: Requirements for shop inspection shall be as stated in the inquiry documents. 7.1.3. ADD TO THIS CLAUSE: A minimum of ten (10) working days notice shall be given for observed and witnessed tests. 7.1.4. ADD A NEW CLAUSE: d) A copy of the agreed inspection plan shall be forwarded to the Purchaser for review and/or approval. 7.1.5. ADD TO THIS CLAUSE: Measuring equipment for inspection and testing shall be selected such that it has a resolution and accuracy at least five times finer than the tolerance of the parameter being measured. Similarly, standards against which a piece of equipment is calibrated shall be at least five times as accurate as the equipment being calibrated. Only measuring equipment which can be demonstrated to have been previously calibrated satisfactorily and still be within its documented calibration period (interval) shall be used for inspection and testing. Care shall be taken with respect to dampening devices which can affect the accuracy of measurements. 7.1.8. ADD A NEW CLAUSE: Each pump shall be inspected and tested in accordance with this document.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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7.2 INSPECTION 7.2.2.1. ADD TO THIS CLAUSE: The inspection class for pump casings shall be determined in accordance with the maximum allowable working pressure/pumping temperature relationship: For pumps working at temperatures between –20°F to 750°F (-30°C to 400°C) , or Pressures between 0 to 1300 psig (0 to 90 barg), the material inspection requirements are Class II given in the Table 1 below and the subsequent Notes. Pumps working out of these ranges the material inspection requirements are Class I given in the Table 1 below and the subsequent Notes. For double-casing pumps, the outer casing pressure/temperature shall be used to determine the Inspection Class of the outer casing. The inner casing shall be inspected to Class II.

Figure 2. Inspection classes for pressure-containing casings Table 2. Material inspection per inspection class TYPE OF COMPONENT

REQUIRED INSPECTION (Note 1): INSPECTION CLASS II

Casing – cast

VI plus MT or PT (critical areas)

Casing – cast 2)

VI plus MT or PT (critical areas)

Casing – wrought (Notes 2, 3) Nozzle weld Butt weld Fillet weld Internals Auxiliary process NOTES:

VI plus MT or PT (100%) VI plus MT or PT (100%) PLUS RT (10%) VI plus MT or PT (100%) VI VI plus MT or PT (100%)

REQUIRED INSPECTION (Note 1): INSPECTION CLASS I VI plus MT or PT (critical areas) plus RT/UT (critical areas) VI plus MT or PT (critical areas) plus UT (critical areas) VI plus MT or PT (100%) plus RT/UT (100%) VI plus MT or PT (100%) plus RT (100%) VI plus MT or PT VI VI plus MT or PT (100%) plus RT (100%)

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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1. VI = Visual Inspection (7.2.2.6) MT= Magnetic Particle Examination (Table 13) PT= Liquid Penetrant Examination (Table 13) RT= Radiographic Examination (Table 13) 2. "Casing" includes all items of the pressure boundary of the finished pump casing (e.g. the casing itself and other parts such as nozzles, flanges, etc. attached to the casing). "Critical areas" are inlet nozzle locations, outlet nozzle locations, casing wall thickness changes and packing seal areas. The manufacturer shall submit, for purchaser’s approval, details of the critical areas proposed to receive MT/PT/RT. 3. ―Wrought‖ material includes forgings, plate and tubular. 4. Timing of Inspection: o VI/MT/PT: shall be performed after final heat treatment (not necessarily after stress relieving for carbon steel material) in the final machined condition. o RT castings: shall be performed after final heat treatment (not necessarily after stress relieving) but need not be in the final machined condition provided that the thickness is within 20 percent of the final thickness. In any case the radiographic sensitivity indicator (e.g. penetrameter) shall be selected based on the final thickness. o RT of welds: shall be performed after final heat treatment (not necessarily after stress relieving). 

ADD NEW CLAUSE:

7.2.2.4. Casting defects: If defects are found which necessitate a major weld repair (as defined in 5.12.2.3) the casting shall be inspected to the next more severe inspection class unless the initial inspection was already at Class I. Minor weld repairs shall be inspected to the same inspection class as that for the initial inspection of the casting. Major weld repairs shall be inspected to the next more severe inspection class than the initial inspection unless the initial inspection was already at Class I, in which case the weld repair shall be inspected at Class I. 

ADD NEW CLAUSE:

7.2.2.5. Ultrasonic Examination (UT): Where the configuration of the casting makes radiography impossible, it may be replaced by ultrasonic testing. 

ADD NEW CLAUSE:

7.2.2.6. Visual Inspection (VI): VI shall be performed in accordance with ASME V, Article 9. All surfaces shall be inspected. Acceptance criteria for pressure-containing steel castings shall be in accordance with MSS SP-55. Acceptance criteria for other parts shall be in accordance with the material specification and the Manufacturer’s documented procedures. 

ADD NEW CLAUSE:

7.2.2.7. In addition to Table 13, UT of wrought material shall be in accordance with ASME V, Article 5. The acceptance criteria shall be as follows:

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

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a. Austenitic forgings. Referring to ASME II, SA-745, either QL-1 for straight beam, t = 0 to 75 mm or QL-2 for straight beam, t = 76 to 200 mm or QA-2 for angle beam, all thicknesses. b. Non-austenitic forgings. Referring to ASME II, SA-388, for straight beam examination, back reflection method, no areas shall have a loss of 95 percent or more of the reference back reflection. For straight beam examination, reference block method, there shall be no indications equal to or larger than the indication received from the reference block constructed with the following flat-bottomed holes:

1.5 mm (0.060 in) 2 mm (0.080 in) 6 mm (0.235 in)

for t = 0 to 37 mm (0 – 1.5 in). for t = 38 to 150 mm (1.5 – 6 in). for t = 151 mm (6 in) and greater.

For angle beam examination, there shall be no indications equal to or larger than the indication received from the reference notch or amplitude reference line. c. Plate material. Acceptance criteria shall be in accordance with ASME II, SA-435 or SA-577, depending on the material. d. Tubular material. Acceptance criteria shall be in accordance with ASME II, SE-213, in which the calibration notch shall take the following form: -

Shape shall be rectangular. Depth shall be maximum 5 % of the nominal wall thickness. Length shall be 25 mm  5 mm (1 in  ¼ in). Width shall be no greater than twice the depth.

7.3. TESTING 

ADD NEW CLAUSE:

7.3.1.1. Add to Table 14: There shall be no positive tolerance on driver rated power. 7.3.1.2. REPLACE THIS CLAUSE BY: Ten (10) weeks after receiving the purchase order, the vendor shall submit to the purchaser, for his review and comments, detailed procedures for all running tests and all specified optional tests, including acceptance criteria for all monitored parameters. 7.3.2. Hydrostatic test 7.3.2.1. REPLACE SUB-CLAUSE a) BY: All pump pressure-casing components shall be tested to the same pressure. 7.3.2.5. ADD TO THIS CLAUSE: A wetting agent shall be used when any of the circumstances described in this article apply. The wetting agent to be used shall be subject to the approval of the Principal. The hydrostatic test liquid shall include a wetting agent to reduce surface tension if one or more of the following conditions exist.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

7.3.2.7. ADD NEW CLAUSE: Any repairs to the pressure casing components shall require a repeat of the hydrostatic test. 7.3.3. Performance test 7.3.3.2. REPLACE PARAGRAPH f) OF THIS CLAUSE BY: f) Pumps specified for pure oil mist lubrication shall be connected to the Supplier’s oil mist supply system. 7.3.3.3. REPLACE THIS CLAUSE BY: The performance test shall be conducted as specified in 7.3.3.3.a) through 7.3.3.3.g). 7.3.3.3. ADD TO SUB-CLAUSE a): During the performance test the NPSHA on the test stand shall not exceed 110% of the NPSHA specified on the data/requisition sheet. After the normal performance test on five points has been completed, the Manufacturer shall operate the pump at rated point in a stable condition for at least 1 hour, except for multi-stage vertical pumps, which shall be operated for at least 2 h. Vertical submerged pumps (turbine type) shall be tested at the five points at minimum submergence of the pump; all conditions shall be stable at each test point. 7.3.3.3. ADD A NEW SUB-CLAUSE f): If pressure lubricated systems are used, the lubricating oil temperature shall be held for at least 30 minutes at the value corresponding to the maximum allowable viscosity, and for 30 minutes at the value corresponding to the minimum allowable viscosity. At minimum and maximum viscosity, and at the viscosity corresponding to the normal operating oil temperature, shaft vibration shall be measured and vibration frequency analyzed to check for instabilities. 7.3.3.3. ADD A NEW SUB-CLAUSE g): Shop tests shall be carried out with an electric motor with known efficiency values. 7.3.3.4. REPLACE SUB-CLAUSE c) BY: The measured shutoff head shall not exceed 120% of the head at rated capacity unless previously approved by Purchaser. 7.3.3.4d. Modify Replace Note a) of Table 14 by: The negative tolerance specified here shall be allowed only if the test curve still shows a 5% head rise to shut-off. When parallel operation is specified, the pump performance test curve shall have no negative tolerance. 7.3.3.5. ADD TO SUB-CLAUSE a): Modifying the impeller to meet performance by underfiling, or overfilling is not allowed. 7.3.3.5e. New Performance and NPSH test curves shall be reviewed by Purchaser prior to the pump release for shipment. 7.3.3.6. New Multi-stage pumps shall be disassembled after the performance test to verify mechanical integrity and to confirm the non-contact of close clearance parts.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

7.3.4. Optional tests 7.3.4.2. NPSH test ADD TO THIS CLAUSE: An NPSHR test shall be performed in the following cases: (i) For pumps with a capacity less than 1 500 m3/h, (6 600 gpm) if the difference between NPSHA and NPSHR is less than 2 m (6.5 ft); (ii) For pumps with a capacity of 1 500 m3/h (6 600 gpm) or more, if the difference between NPSHA and NPSHR is less than 3 m (10 ft); (iii) For pumps handling liquids containing dissolved gas; (iv) For pumps with a suction specific speed above 11000, see 5.1.11; (v) If the NPSHA at 120 % of rated flow exceeds the NPSHR by 0,5 m (1,5 ft), or less ADD TO THIS CLAUSE: 7.3.4.2.2. Substitute

7.3.4.2.4. New 7.3.4.3. Add

A 3% drop in head, or an identifiable change in noise and/or vibration, shall be interpreted as indicating performance impairment. The first stage head of pumps with two or more stages shall be measured using a separate connection to the first stage discharge. Testing with only the first stage installed or by using model pumps is subject to the approval of the Purchaser. The NPSHR shall always assume that the pump is handling water; corrections for other liquids shall not be made. NPSHR tests based on suction throttling are not acceptable.

All pumps for duties with a discharge pressure above 1,450 psi (100 bar) and/or an absorbed power above 1000 HP (750 kW) shall be subjected to a witness complete unit test with contract driver and all auxiliaries.

REPLACE THIS CLAUSE BY: 7.3.4.4. If specified in the purchase order, a sound level test shall be executed on the pump in accordance with EEMUA 140; acceptance criteria shall be as specified in (5.1.16). ADD TO THIS CLAUSE: 7.3.4.5. If supplied with the pump, the spare rotor and inner casing assemblies shall be performance tested in one of the corresponding pressure casings. 7.3.4.6. Bearing housing resonance test ADD TO THIS CLAUSE: Unless otherwise specified, a bearing housing resonance test is required for single stage overhung pumps with drivers of 150 kW (200 hp) or greater.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

7.3.4.7. Mechanical run test 7.3.4.7.2. Substitute The pump shall be mechanically run for 4 hours; this run shall be performed at rated flow. The beginning of the mechanical run test shall not occur until oil temperatures have stabilized. The Mechanical Run Test shall be: o Witness for main and spare pump in critical or heavy duty service. o Witness for one pump in essential service. 7.4. PREPARATION FOR SHIPMENT 7.4.1. Modify

Replace the first sentence of this clause by: Equipment shall be suitably prepared for 6 months outdoor storage. All rust preventives applied to the unpainted parts of the equipment shall be easily removable with hydrocarbon solvents.

7.4.3.1. Add

Pumps, drivers, and all furnished auxiliaries shall be shipped fully assembled on the base plates, except vertical canned pumps with the suction tanks (barrels) removed. Special case for high weigh driver shall be submitted to Purchaser for review and writing approval.

7.4.3.6. Substitute

Threaded openings (where permitted, see 6.5.1.9) shall be provided with steel caps or steel plugs in accordance with Taper threaded plugs (5.4.3.7).

8. SPECIFIC PUMP TYPES 8.1. SINGLE STAGE OVERHUNG PUMPS 8.1. Add Pump type OH3 shall not be used, unless otherwise is specified in the Data Sheet and write approved by the Principal. Pump type OH4 shall not be used. 8.1.3. Integral gear driven (Type OH6). REPLACE THIS CLAUSE BY: 8.1.3.1. Splined input and output shafts shall not be used. REPLACE THIS CLAUSE BY: 8.1.3.4. Type OH6 pumps do not require lateral critical speed analyses unless specified by the Principal. ADD NEW CLAUSE (Numeral 8.1.3.8) 8.1.3.8. New 8.1.3.9. New

Rolling element bearings shall be selected from bearing manufacturers' standard ranges. Solid shaft driver shall allow to be coupled to the gearbox with a flexible disc-type coupling. Both, the gearbox and the driver coupling hubs shall be mounted at the factory. A gearbox drive shall use high efficiency spiral bevel gears according to AGMA 6010 and shall have a minimum load (service) factor of 1.5 or shall have helical gears made of die-forged, precision hardened steel. The gear housing should be suitably sized to ensure adequate heat dissipation and noise levels as specified.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

8.1.3.10. New

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Vertical units shall be provided with stands. The top of the stand (driver mounting surface) shall be plain and prepared for leveling.

8.1.3.11. New Clause: Lube oil system shall be of the integral forced-circulation type and shall include as a minimum the following major components: gearbox sump, main lube pump (a constant displacement gear type pump directly driven by the input shaft)., oil heat exchanger (if necessary), oil filter, pressure indicator and sight glass. The vendor shall advise if any additional system is required to provide lubrication during the start of the pump. 8.2. Between-bearings pumps (types BB1 to BB5) 8.2. Add Pump type BB4 shall not be used. 8.2.1.2. Substitute

Pumps for service temperatures below 100 °C (212 °F) in Class 150 systems may be foot mounted.

8.2.2. Rotor ADD TO THIS CLAUSE: 8.2.2.1. Impellers and stage pieces shall be positively locked to prevent axial movement in the direction opposite to normal hydraulic thrust. 8.2.2.3. Substitute

Rotors with shrink-fit impellers shall have mechanical means to limit movement in the direction opposite to normal hydraulic thrust to 0,75 mm (0,030 in) or less.

8.2.3.2. Substitute

Running clearances associated with components used to balance axial thrust may be the manufacturer’s standard, provided these clearances are stated as exceptions to this International Standard (see 5.7.4) in the proposal and are approved by the purchaser. If the manufacturer’s standard clearances are based on material combinations exhibiting superior wear characteristics, supporting data shall be included in the proposal. Interstage bushings for vertical and horizontal multi-stage pumps handling hydrocarbons shall not be considered as bearings when determining clearances, but clearance shall be determined in accordance with the minimum diametral clearances given in Table 5 of API 610. Special attention shall be paid to running clearances in boiler feed water pumps with regard to hydraulic imbalance and rotor dynamic instability causing undesirable vibration or galling.

8.2.4. Dynamics 8.2.4.1. Lateral analysis REPLACE THE FIRST SENTENCE OF THIS CLAUSE (Numeral 8.2.4.1.2) BY: 8.2.4.1.2. Add

For multi-stage pumps a lateral analysis shall be quoted as an option in the proposal. The proposal shall contain data to allow the Principal to make a decision required according to Table 16. A shop verification of the unbalanced response analysis shall be made.

8.2.5.1.5. New

When hydrodynamic radial bearings are provided, provision shall be made for mounting two radial vibration probes adjacent to each bearing.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

8.2.5.2.2. Substitute

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The thrust bearing collars shall be replaceable and shall be positively locked to the shaft to prevent fretting.

8.2.6 Lubrication REPLACE THIS CLAUSE BY: 8.2.6.2. Modify

External pressure lubrication systems shall comply with job specifications General Purpose Lube Oil Systems. The main oil pump with suction strainer. Shaft driven oil pumps shall not be used for essential, non-spared pumps. If a positive displacement type of oil pump is supplied, a separate relief valve (not integral with the pump) shall be provided. The relief valve shall not be used for pressure regulation. Horizontal oil pumps shall not be installed on top of the oil reservoir. Unless otherwise specified, twin coolers shall be provided for equipment in non-spared essential service. They shall be piped in a parallel arrangement using a continuous flow transfer valve. Each cooler shall be sized to accommodate the total cooling load. The oil-side operating pressure shall be higher than the water-side operating pressure to prevent contamination of the oil in the event of cooler failure. Each oil cooler shall maintain the lube-oil supply temperature at or below 49 °C. The cooler shall be a water-cooled shell-and-tube type or a suitable air-cooled type, as specified by the Purchaser. A removable-bundle design shall be used for shell-and-tube coolers with more than 0.46 m2 of tube surface area. Removable-bundle coolers shall be in accordance with Purchaser’s standard, constructed with a removable channel cover. Spared pumps shall have single oil coolers. Filters shall have a continuous flow switch-over valve including a pressure equalization line. The lubrication system piping shall be made from AISI 316L.

8.3. VERTICALLY - SUSPENDED PUMPS 8.3.1 General ADD NEW CLAUSE: 8.3.1.3. All pump discharge column pipe sections shall be flanged with a rabbet fit for proper alignment. 8.3.4.2. Add

8.3.4.4. New

Materials of steady bearings and/or interstage bushings of vertical pumps shall be a non-galling combination. Replaceable bowl wear rings are required if enclosed impellers are furnished.

8.3.6. Guide bushings and bearings ADD TO THIS CLAUSE (Numeral 8.3.6.1):

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

1. Guide bushings and bearings for vertical multi-stage pumps, types VS6 and VS7, in hydrocarbon service, shall be of babbit-impregnated carbon, if the product temperature is not greater than 150 °C (300 °F). For product temperatures above 150 °C (300 °F), cast iron impregnated carbon, shall be used. 2. If guide bushings or bearings are used at product temperatures of 100 °C (200 °F) or less, that diametral clearance shall be 0.10 mm to 0.15 mm (0.004 in to 0.006 in). for shaft diameters of 30 mm to 60 mm (1.25 in to 2.5 in). On applications with product temperatures above 100 C (200 F), the bushing or bearing clearances shall be calculated due to the differences in thermal expansion rates between the impregnated carbon and the shaft materials. 3. The minimum wall thickness of bushings or bearings shall be 5 mm (3/16 in). ADD TO THIS CLAUSE: 8.3.6.2. Unless otherwise specified, thrust bearings for vertical pumps, other than vertical close-coupled pumps, shall be integral with the pump. 8.3.8. Accessories ADD TO THIS CLAUSE: 8.3.8.1. The job motor shall be fitted to the pump at the manufacturer's works and the alignment checked to verify proper fit and alignment. The alignment readings shall be supplied in the vendor’s data. 8.3.8.3. Mounting plates (Numeral 8.3.8.3) 8.3.8.3.1. Substitute

The mounting plate for double-casing pumps shall be separate from the main body flange and located sufficiently below it to permit the use of through bolting on the body flange (see Figure 33), unless otherwise is establish in the Data Sheet. Mounting plates of solid carbon steel construction with minimum thickness of 2 in (50 mm) shall be provided. Corners of mounting plates shall be rounded to at least 2 in (50mm) radius to prevent cracking of the grout.

REPLACE THIS CLAUSE BY: 8.3.8.3.2. Substitute At least four alignment positioning screws shall be provided for each drive train component to facilitate horizontal adjustment. 8.3.8.3.3. Substitute

Pumps shall be provided with a separate soleplate for bolting and grouting to the foundation (see Figure 33), unless otherwise is establish in the Data Sheet. This plate shall be machined on its top surface for mounting of the discharge head, can or motor support.

8.8.8.3.6. ADD NEW CLAUSE: 1. Mounting plates shall be supplied. The plate shall be at least 50 mm (2 in) thick. The mounting plate shall be provided with vertical levelling screws at least 13 mm (0.5 in) in diameter and at least 150 mm (6 in) long. Vertical levelling screws shall be located adjacent to each anchor bolt location. Corners of mounting plates shall be rounded to a radius of at least 50 mm (2 in). 2. All vertical VS6 and VS7 type pumps in hydrocarbon service shall be supplied with an independent liner. The liner shall be designed to be installed directly in concrete and shall be robust enough to act as the inner form for concrete, as shown in Figure 3.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

PUMP DISCHARGE HEAD

SUCTION FLANGE

DISCHARGE FLANGE

BLIND FLANGED, VALVED, SNIFFER CONNECTION

BLIND FLANGED, VALVED, CASE DRAIN

SW

SW

LEVELLING JACKSCREW

HOLD DOWN BOLTS MACHINED SURFACES

MOUNTING, min. 50 mm

ANCHOR BOLTS EPOXY GROUT

CAN FLANGE THROUGH -BOLTS

SW

CAN

50 mm MIN.

BOWLS

600 mm MIN.

SW

CASE DRAIN DN 25 PIPE (MIN.) OUTER LINER

CONCRETE FOUNDATION

Figure 3. Typical vertical multi-stage centrifugal pump installation

8.3.9. Inspection, testing and preparation for shipment 8.3.9.1. Add

When vertically suspended pumps are tested with other than the job motor, the job motor shall be fitted to the pump prior to shipment to verify alignment and proper fit.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

REPLACE THE FIRST SENTENCE OF THIS CLAUSE BY: 8.3.9.2. Unless otherwise specified, for vertical pumps in process service, a resonance test with the pump unpiped shall be conducted on the pump structure/driver frame assembly. ADD NEW CLAUSE : 8.3.13.7. The bearing area corresponding to guide bushings or bearings shall be coated with a hard protective material. This coating shall be Union Carbide LW-15 or equivalent approved by the Principal. Designs with sleeves in the bearing area are subject to the approval of the Principal. 9.2. Proposals 9.2.1.1. Modify

Add to end of the second sentence: "and the material requisition, as well as any requirements of the inquiry documents."

9.2.3l. Substitute

A list of similar machines installed and operating under analogous conditions shall be included in the proposal. The experience will be considered satisfactory if vendor have manufactured in the proposed shop at least four pumps operating in similar conditions and performing satisfactory for at least three years. Lack of experience may be the cause of rejection of the proposed equipment.

9.2.4. Add

Quoted efficiency and power shall include the effect of seal drag and increased clearances for hot pumps.

ANNEX G Replace by Appendix 1 of this Specification.

ANNEX H Replace Tables H.1 and H.6 by Appendix 1 of this Specification. Tables H.2, H.3, H.4 and H.5 remain. Table H.1 Note g Filler material to be non-asbestos.

ANNEX L 

L.2.1 cc) 3) vii) ADD TO THIS CLAUSE:

This section of the instruction manual shall give design values for all fits and running clearances which, if incorrect, could adversely affect the outcome of the maintenance work being described in the instruction manual. Fits may be quoted generically by stating the applicable tolerance grades in accordance with ISO 286 or equivalent. Running clearances shall be quoted specifically or generically by referencing Table 5 of ISO 13709 if applicable.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

PART III (ACCORDING WITH API 610 CONSECUTIVES NUMBERS – ITEMS) 7.9. PUMPS FOR VITAL SERVICE AND UNSPARED (AMENDMENTS/SUPPLEMENTS TO ISO 13709:2003)

PUMPS

FOR

ESSENTIAL

SERVICE

7.9.1. Scope (Numeral 1) 

ADD TO THIS CLAUSE:

Part III of this Specification applies to pumps for vital service and to unspared pumps for essential service, in addition to the requirements of Part II of this Specification. 7.9.2. Basic design (Numeral 5) 7.9.2.1. General (Numeral 5.1) 

ADD TO THIS CLAUSE:

The pump manufacturer shall confirm that the quoted equipment, pump, gear, and driver design is proven (i.e. that the Manufacturer has operating experience with the same equipment in similar service). 

ADD TO THIS CLAUSE (Numeral 5.1.4):

A predicted performance curve for the pump with normal and three times maximum design clearances shall be provided at the proposal stage. After the pump is performance tested a revised performance curve based upon three times maximum design clearances shall be provided. NOTE: The intention of this is to facilitate the review of the driver and the control system in order to assess the impact of worn conditions against process requirements for unspared equipment only. 

ADD TO THIS CLAUSE (Numeral 5.1.10): NPSHA shall exceed NPSHR by at least 10 % or 2 m (6.5 ft), whichever is greater, at the rated operating point. NPSHA shall exceed NPSHR by 1 m (3.3 ft) at 120 % of the rated operating point.

7.9.2.2. Rotors (Numeral 5.6) 

ADD NEW CLAUSE (Numeral 5.6.16):

Shafts and impellers shall not be plated for repair purposes. Repairs to rotating elements shall be subject to review and approval by the Principal. Each rotor shall be clearly marked with a unique identification number on the end opposite the coupling. 7.9.2.3. Wear rings and running clearances (Numeral 5.7) 

REPLACE THE LAST SENTENCE OF THIS CLAUSE (Numeral 5.7.1) BY:

Impellers shall have hardfaced integral wear surfaces.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001



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REPLACE THIS CLAUSE (Numeral 5.7.3) BY:

The design of renewable case wear rings shall mechanically prevent axial or tangential movement in the casing. 7.9.2.4. Bearings and bearing housings (Numeral 5.10) Bearings (Numeral 5.10.1) 

REPLACE THIS CLAUSE (Numeral 5.10.1.1) BY:

Pump shall have hydrodynamic radial and thrust bearings. 

REPLACE THE SECOND SENTENCE OF THIS CLAUSE (Numeral 5.10.1.2) BY:

All loads shall be determined at design clearances and at three times design clearances. Bearing Housings (Numeral 5.10.2) 

ADD NEW CLAUSE (Numeral 5.10.2.13):

If the normal operating temperature is above 100 °C (200 °F), one tooling ball for use with alignment equipment (e.g. Essinger type) shall be provided on each side of the bottom half of each bearing housing and corresponding tooling balls shall be provided on the baseplate. 7.9.3. ACCESSORIES (Numeral 6) 7.9.3.1. Drivers (Numeral 6.1) 

ADD TO THIS CLAUSE (Numeral 6.1.5):

Vendor shall submit a driven equipment speed torque curve superimposed on the motor driver starting torque curve for approval by the Principal. 7.9.3.2. Couplings and guards (Numeral 6.2) 

REPLACE THIS CLAUSE (Numeral 6.2.6) BY:

The coupling hubs shall be of the keyless, hydraulically-fitted design. Design of the fit and shaft end shall be subject to the approval of the Principal. 

REPLACE SUB-CLAUSE c) (Numeral 6.2.14) BY: c) Unless otherwise specified, the coupling guard shall be oil-tight, with an oil drain back to the lubrication system. All joints shall be static. Thermal expansion shall be accommodated by using a stainless steel bellows or a similar flexible metallic element.



ADD NEW SUB-CLAUSE d): d) Unless otherwise specified, guards shall be made of one of the following spark-resisting materials: 1) Aluminum or aluminum alloys with a maximum content of 2 % magnesium or 0.2 % copper. 2) Copper or copper-based alloys (e.g. brass, bronze).

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

e) The maximum guard temperature shall be 70 °C (160 °F) 7.9.3.3. Baseplates (Numeral 6.3) 

REPLACE THIS CLAUSE BY:

The baseplate shall be as specified by the Principal. 7.9.3.4. Instrumentation (Numeral 6.4) Vibration, position, and temperature detectors (Numeral 6.4.2). See Data Sheet Centrifugal Pumps API 610 

REPLACE THIS CLAUSE (Numeral 6.2.2) BY:

Unless otherwise specified, each pump shall have two radial vibration probes at each bearing housing, two axial position probes and, for each shaft speed, one event-per-revolution probe. The detectors and their mounting and calibration shall be supplied, installed, and tested in accordance with API 670. 

REPLACE THIS CLAUSE (Numeral 6.4.2.3) BY:

Unless otherwise specified, each radial bearing shall be fitted with two bearing metal temperature detectors. Thrust bearing shall be fitted with three bearing metal temperature detectors in both the active and inactive bearings. The detectors and their mounting and calibration shall be supplied, installed, and tested in accordance with API 670 

REPLACE THIS CLAUSE (Numeral 6.4.2.4) BY:

Vibration (proximity) probes and holders shall be supplied by the vendor specified by the Principal. Radial probe holders shall be stainless steel. Unless otherwise specified, extension cables shall be armoured. Cables shall not be run in conduits. Cables shall be run in a neat and tidy manner and suitably supported. Junction boxes shall be mounted on the edge of the skid. J-Box locations are subject to the approval of the Principal. 7.9.3.5. Piping and appurtenances (Numeral 6.5) General (Numeral 6.5.1) 

REPLACE THIS CLAUSE (Numeral 6.5.1.1) BY:

Arrangement of all piping shall be subject to the approval of the Principal. 7.9.3.6. Mounting of auxiliaries (Numeral 6.7) 

ADD NEW CLAUSE (Numeral 6.7.1):

All auxiliary equipment such as instrumentation, seal support components, lube-sets, etc shall be mounted in a manner that does not interfere with normal maintenance or operator surveillance activities. 7.9.4. Inspection, testing and preparation for shipment (Numeral 7) 7.9.4.1. Testing (Numeral 7.3)

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

General (Numeral 7.3.1) 

REPLACE THIS CLAUSE (Numeral 7.3.1.2) BY:

At least 6 weeks prior to the first scheduled running test, the vendor shall submit to the Principal for review, comment and approval detailed procedures for all witnessed running tests, including acceptance criteria for all monitored parameters. Performance test (Numeral 7.3.3) 

7.3.3.3. REPLACE THIS FIRST SENTENCE OF THIS CLAUSE BY:

The performance test shall be conducted on the spare rotor as specified in 7.3.3.3 a) through 7.3.3.3 f) 

REPLACE SUB-CLAUSE e) BY:

During the performance test the NPSHA on the test stand shall not exceed 110 % of the NPSHA specified on the data/requisition sheet. 

ADD SUB-CLAUSE f)

In addition to formal submittal of final data in accordance with 9.3.2.2, curves and test data (corrected for speed, specific gravity, and viscosity) shall be submitted within 24 h after completion of performance testing, for the review and approval of the Principal, prior to removal from the test stand. Optional Tests (Numeral 7.3.4) NPSHR Test (Numeral 7.3.4.2) 

REPLACE THIS CLAUSE (Numeral 7.3.4.2.1) BY:

NPSHR shall be determined at each test point in 7.3.3.3.a, except shutoff. At each test point multiple measurements shall be taken to demonstrate the pump's sensitivity to NPSH margin reduction. As a minimum, points shall be taken corresponding to 0 %, 1 %, 3 %, 5 % and 7 % head reduction across the first stage. Complete unit test (Numeral 7.3.4.3) 

REPLACE THIS CLAUSE BY:

A complete unit test shall be conducted. Vibration measurements shall be made to verify the vendor’s torsional and lateral analysis in accordance with Annex I. Mechanical run test (Numeral 7.3.4.7) 

REPLACE THIS CLAUSE (Numeral 7.3.4.7.2):

A four-hour mechanical run test shall be conducted on the main rotor. During this test the lubricating oil temperature shall be held for at least 30 min at the value corresponding to the minimum and maximum allowable viscosity. At minimum and maximum viscosity, and at the viscosity corresponding to the normal operating oil temperature, shaft vibration shall be measured and vibration frequency analysed to check for instabilities. If no mechanical contact or damage was observed after the performance test and the mechanical run test is deemed successful by the Principal, the pump shall not be disassembled.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

7.9.4.2. Preparation for shipment (Numeral 7.4) 

ADD TO THIS CLAUSE (Numeral 7.4.3.9):

The baseplate with all ancillary equipment and piping shall be shipped assembled. A shock recorder shall be attached to the skid and be active during shipment. 7.9.5. Specific pump types (Numeral 8) 7.9.5.1. Between bearings pumps (types BB1 to BB5) (Numeral 8.2) 

ADD TO THIS CLAUSE:

―Flow splitters‖ shall be designed and checked to ensure that no resonances or other phenomena can lead to pieces becoming detached and entering the pump. Their design shall be subject to the approval of the Principal. 

REPLACE THIS CLAUSE (Numeral 8.2.1.2) BY:

Pumps shall be centreline supported. Rotor (Numeral 8.2.2) 

ADD NEW CLAUSE (Numeral 8.2.2.5):

Particular attention shall be paid to the design of thrust balancing devices such as balance drums or interstage bushings/sleeves for opposed impeller designs. Appropriate areas of balance devices and corresponding stationary components cavities shall be coated for wear resistance. The Manufacturer shall indicate the areas to be coated and the method of coating for the approval of the Principal. Dynamics (Numeral 8.2.4) Lateral analysis (Numeral 8.2.4.1) (Numeral 8.2.4.1.1) Wet critical speeds shall be separated by at least 10 % above the maximum continuous speed. 

REPLACE THIS CLAUSE (Numeral 8.2.4.1.3) BY:

A lateral analysis of the pump shall be performed in accordance with Annex I, and assessed at design clearances and at three times specified wear ring and bushing clearances. Unless otherwise specified a shop verification of the unbalanced response analysis shall be performed.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001



Elaborado 25/04/2011

Versión: 1

ADD NEW CLAUSE (Numeral 8.2.4.1.4):

The analysis report shall include sufficient dimensional and mass elastic data to perform an independent analysis. Any input models used shall also be included. Lubrication (Numeral 8.2.6) 

REPLACE THE FIRST SENTENCE OF THIS CLAUSE (Numeral 8.2.6.1) BY:

A pressure-lubrication system shall be furnished to supply oil at a suitable pressure to the pump bearings, the driver and any other driven equipment, including gears. Preparation for shipment (Numeral 8.2.8) 

REPLACE THIS CLAUSE (Numeral 8.2.8.3) BY:

If a spare rotor is purchased it shall be crated in a metal container in the vertical position for transportation and storage. The crating method shall be suitable for at least 4 years' storage. 

REPLACE THIS CLAUSE (Numeral 8.2.8.4) BY: The container shall be equipped for nitrogen blanketing.

7.9.6. Vendor data (Numeral 9) 7.9.6.1. General (Numeral 9.1) 

REPLACE THE FIRST SENTENCE OF THIS CLAUSE BY (Numeral 9.1.3):

Pre-inquiry, pre-bid and pre-award meetings shall be held before issuing the purchase order. At these meetings, the vendor shall review with the purchaser the proposed equipment, data sheets, performance curves, construction details and specific experience with similar machines. After placement of an order an order clarification meeting and a design coordination meeting shall be held at the Manufacturer’s plant. In addition, other meetings with the successful vendor may be required to discuss details, shop quality control practices, and inspection procedures.

8. REGISTER Not apply.

9. CONTINGENCY Not apply.

10. BIBLIOGRAPHY Not apply.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

11. APPENDIX No. 1

Title Materials Selection

For more information please contact:

Elaboró: Reynaldo Prada Grateron Teléfono: 6847431 Dependencia: ICP-UGC

Versión: 1

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

APPENDIX 1. MATERIALS SELECTION This Appendix provides a selection of the appropriate materials for centrifugal pumps in various services. The pump Manufacturer may offer, for Purchaser's approval, alternative materials if, based on his experience, these would render equal or better service. Such alternative materials shall be clearly indicated in the vendor's proposal as deviating from this Specification. NOTE: Annex H, Table H.2 contains typical alternative materials to ASTM materials. Table APP 1-1 identifies the required pump material groups for various types of fluids to be pumped. Table APP 1-2 then identifies, for each pump material group, the required material specification for the various pump parts. NOTES: 1. For pump parts designated as ASTM materials in Table APP 1-2, all the requirements of the applicable ASTM specification shall be met, along with any other requirements included in Table APP 1-2. 2. For pump parts not designated with an ASTM specification number in Table APP 1-2, the chemical composition requirements of the appropriate ASTM specification shall be met. 3. Where carbon steel or stainless steel have been specified without further description, the grade to be used is at the Manufacturer's discretion. 4. Packing materials shall comply with MESC SPE 85/200. 5. The gasket design conditions (pressure, temperature and media resistance) of both the pump gaskets and gaskets of the suction and discharge piping shall comply with the piping class and MESC INF 85/115.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

TABLE APP 1-1. SELECTION OF PUMP MATERIAL GROUPS SERVICE GROUP 1 2 3 a

4 5 6 7 1 2

b

3 4 5 6 7 8 9 10 11 1

PUMPED MEDIUM

TEMP (°C)

All oil and chemical products, non-corrosive All oil products, non-corrosive Oil products containing naphthenic acids (acid number above 0.5 mg KOH/g) except short residue Short residue containing naphthenic acids (acid number above 0.5 mg KOH/g) Oil products containing sulphur compounds Oil products containing a corrosive aqueous phase Crude distilling unit reflux Fresh water, aerated Fresh cooling water, air-free closed circuit or inhibited open circuit Condensate, non-aerated Condensate, aerated Brackish water Seawater, brine (seawater distiller) Boiler feed water, aerated Boiler feed water, de-aerated Sour water, pH < 7 Sour water, pH > 7 Drain water, slightly acidic, non-aerated

0 to 450 > 450

PUMP MATERIAL GROUP 2 9

240 to 400

12

7

> 300

9, 12

7

> 300

9, 12 12 2 9

7

c 2

All products, non-corrosive, low temperatures

3 d g h j l

1 1 1 1 1 2

m

o

1 1 2 3 4 5

Caustic solutions, all concentrations Amine lean and fat solvents in amine units Amine make-up solutions and sulfolane Liquid chlorine, dry (max. 150 mg/kg water) Hydrofluoric acid, dry (max. 0.8 % weight water), with or without hydrocarbons Hydrofluoric acid, all concentrations, with or without hydrocarbons Liquid sulphur Sulphuric acid, ≤ 10 % Sulphuric acid, ≤ 90 % Sulphuric acid, > 90 %, including oleum Sulphuric acid, ≤ 98 % Sulphuric acid, 67 % to 98 %, with hydrocarbons

≤ 240

NOTES

2

0 to -50 -50 to 105 -105 to 200 ≤ 45

2 9, 12 15 13, 15 9, 12 2, 12 12, 15 12 12, 15 7

6

8, 14

1

14

2, 3, 4

≤ 65

2 12 2 5

≤ 65

4

6 1 1 1

20 2

5 8 8 8 8 8

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

NOTES: General: Pump material selection has been brought in line as far as possible with ISO 13709. 1. For certain mildly corrosive conditions, e.g. stripped sour water, pump material group 2 is acceptable. Approval of the Principal is required. 2. Aluminium alloy may be considered if applied in an aluminium alloy piping system. 3. For liquid oxygen or liquid nitrogen service, extra precautions shall be taken. Approval of the Principal is required. 4. Casing and nozzles steam-jacketed. 5. Pump material group 12 is recommended if oxygen ingress cannot be excluded, e.g. in case of spare pumps. 6. Pumps operating above 300 °C shall be made of parts that received a mechanical stabilization heat treatment to avoid distortion at operating temperature. For AISI-410 type stainless steels, careful tempering will be sufficient. Solution annealed austenitic stainless steel (e.g. A 351-CF8M) shall be stress relieved at 100 °C above the working temperature of the pump, but not exceeding 500 °C. 7. Consult materials and corrosion engineer for pump material selection.

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Elaborado 25/04/2011

Versión: 1

TABLE APP 1-2. PUMP MATERIAL GROUP SPECIFICATIONS

Pump Material Group

2

4

5

Casing ASTM A 216- WCA or WCC (or WCB with max. 0.25 % C and carbon equivalent max. 0.45) or ASTM A 516-Gr 55, welded and PWHT'd or ASTM A 395

ASTM A 352-LCB

ASTM A 352-LCB

Impeller

ASTM A 48 No. 40 (max. tip speed 55 m/s, max. temp. 200 °C) or ASTM A 216- WCA or WCC (or WCB with max. 0.25 % C and carbon equivalent max. 0.45) above 200 °C or A744 CF8M

ASTM A 494-M-35-1

ASTM A 743-CA15

Shaft

Carbon steel up to 300 °C. ASTM A 322- Gr 4140 above 300 °C

Carbon steel with Monel 400 sleeve

Carbon steel

Casing Wear Ring

AISI 420 (225275 HBW)

Monel 400 AISI 420 (225275 HBW)

Impeller Wear Ring

AISI 420 (325-375 HBW)

Monel 400, overlaid with Colmonoy 6 AISI 420 (325-375 HBW)

Inter- stage Bushing s

ASTM A 48No. 60

Monel 400 AISI 420 (225275 HBW)

Inter- stage Sleeves

AISI 420 (325375 HBW)

Monel 400, overlaid with Colmon oy 6 AISI 420 (325375 HBW)

Wet Bolting

ASTM A 193B6

ASTM F 467/468N05500 ASTM A 193-B6

Remarks

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Pump Material Group

Casing

Impeller

Shaft

7

ASTM A 352- LCB (impact tested)

ASTM A 322ASTM A 48 No. 40 Gr 4140 (quenched (max. tip speed 55 m/s) and tempered)

8

ASTM A 352-LC3

ASTM A 352LC3

9

A487CA6NM Class B

12

ASTM A 351- CF8M

ASTM A 743-CA6NM

ASTM A 744- CF8M

ASTM A 322- Gr 4140 (quenched and tempered) ASTM A 322- Gr 4140 (suitably protected) or 12-14 % Cr steel ASTM A 276- Type 316 or Up to 300 °C: carbon steel (*suitably protected) or Above 300 °C: ASTM A 322- Gr 4140 (*suitably protected) or 12-14 % Cr steel

Elaborado 25/04/2011

Casing Wear Ring

Impeller Wear Ring

AISI 420 (225-275 HBW)

AISI 420 (325375 HBW)

AISI 420 (225275 HBW) AISI 420 (225275 HBW)

AISI 316

Interstage Bushing s AISI 420 (225275 HBW) AISI 420 (225275 HBW)

Versión: 1

Inter- stage Sleeves

AISI 420 (325375 HBW) AISI AISI 420 420 (325(325-375 375 HBW) HBW) AISI AISI 420 (325AISI 420 420 (325375 (225375 HBW) 275 HB W) HBW)

AISI 316, overlaid with Colmonoy 6

AISI 316

AISI 316, overlaid with Colmon oy 6

Wet Bolting

Remarks

ASTM A 320L7

ASTM A 320-L7

ASTM A 193-B6

ASTM A 193-B8M

*Type and execution of protection is subject to Principal's approval

TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPS (AMENDMENTS/SUPPLEMENTS TO API 610 Tenth edition) VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍA CORPORATIVO DE NORMAS Y ESTÁNDARES CÓDIGO CNE ECP-VST-P-MER-ET-001

Pump Material Group

Casing

Impeller

13

ASTM A 890-Gr 5A

ASTM A 890-Gr 5A

14

ASTM A 351CF8

ASTM A 276-Type 304

15

20

ASTM B 148C95800

ASTM A 494-M35-1

ASTM B 148C95800

Shaft

Casing Wear Ring

Impeller Wear Ring

Elaborado 25/04/2011

Inter- stage Bushing s

Versión: 1

Interstage Sleeves

Wet Bolting

UNS S32760

UNS S32760

*UNS S32760

UNS S32760

UNS S32760

UNS S32760

AISI 304

AISI 304

AISI 304

AISI 304

AISI 304

ASTM A 193-B8

ASTM B 150C62300 or Monel K-500 or Carbon steel (suitably protected)

*ASTM B 148- C95800 or ASTM B 150- C63200 or Monel K500

Monel K500 Min. 250 HBW

Monel K500 Max. 200 HBW

Monel K-500 Min. 250 HBW

ASTM F 467/468C63000 or ASTM F 467/468N05500

Monel K500 (max. 200 HBW)

Monel K500 (min. 250 HBW)

Monel K500 (max. 200 HBW)

Monel K500 (min. 250 HBW)

ASTM F 467/468N05500

ASTM A Monel K-500 494-M-35-1

Remarks

*Heat treated or overlaid such that the impeller wear ring is at least 100 HBW harder than the casing wear ring

*All to be maximum 200 HBW