Ecp-Vst-p-mer-et-007 Technical Specification for Centrifugal Pumps Ansi b73.1 - 2001 (r 1999)

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TECHNICAL SPECIFICATION FOR CENTRIFUGAL PUMPSANSI B73.1 – 2001 (( REVISION OF ASME B73.1 M – 1991 (R1999))

VICEPRESIDENCIA DE SERVICIOS Y TECNOLOGÍACORPORATIVO DE NORMAS Y ESTÁNDARES

C DIGO CNEECP-VST-P-MER-ET-007

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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






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TABLE OF CONTENTS

Page.

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






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1. OBJECT

This Standard is intended to cover the minimum requirements for centrifugal pumps according to ANSI/ASME B73.1-2001 R (1999), “Specification for Horizontal End Suction Centrifugal Pumps for Chemical Process”. This specificationis part of the project for ECOPETROL S.A.

2. SCOPE

The numerical identification of section and paragraphs of this specification are the same as in ANSI/ASME B73.1.Vendor shall comply and use this specification together with the standard ANSI/ASME B73.1 for preparing hisproposal in conjunction with information given in the order and/or data sheets.

Compliance with this specification and/or any other information given does not relieve the pump vendor to provideequipment suitable for heavy and continuous duty and for the specific conditions.

The specific requirements for each system shall be as stated in the Material Requisition, which takes precedence overthis specification. Vendor’s quotation shall list all deviations to this specification and requirements contained in theMaterial Requisition. Alternative designs to that specified in the Material Requisition and this specification may beproposed in addition to a fully compliant bid, if there is significant process, price, delivery date advantage or a systemwith improved life cycle value is offered with demonstrable successful field experience.

Compliance with this standard does not relieve the manufacturer or the vendor of the responsibility for furnishingequipment 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 forresolving conflicts:

1) Local governmental and statutory regulations and laws

2) Purchase order or inquiry3) Project Data Sheets and Drawings4) This specification5) 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) forresolution.

Vendor furnished data, drawings and documents shall be furnished in the “English language” during execution of t hepurchase order. Installation, operation and maintenance manuals shall be issued in both the “Spanish language” . ThisSpecification specifies requirements and gives recommendations for centrifugal pumps.

This Specification shall be used in conjunction with data/requisition sheet ECP-VST-P-MER-HD-003

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, andcommissioning or management of a project or operation of a facility. The Principal may sometimes undertake all orpart 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.






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The Principal is the party which initiates the project and ultimately pays for its design and construction. ThePrincipal 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 indicate a requirement.

The word should indicate a recommendation.

Modification. A modification has been made where required on a specific phrase of the corresponding paragraphof ANSI/ASME B73.1. Modification does not involve a Modification invalidating the rest of the paragraph content.

Addition. An addition of the numbered sub-paragraph beyond those in ANSI/ASME B73.1 has been made. An

addition has been made where required on a specific phrase of the corresponding paragraph of ANSI/ASME B73.1(ASME B73.1M was withdrawn).

4. DOCUMENT ABOLISHED

Not apply.

5. REFERENCE SPECIFICATIONS

Refer to ASME B73.1 – 2001 (Revision of ASME B73.1 M -1991 (R1999) – CHAPTER 6

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, toContractors and Manufacturers/Suppliers nominated by them.

This Specification is intended for use in oil refineries, gas plants, chemical plants, oil and gas production facilities andpump station.

When Specifications are applied, a Management of Change (MOC) process should be implemented; this is ofparticular 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 andwhich combination of requirements will be acceptable with regards to the safety, environmental, economic and legalaspects. In all cases the Contractor shall inform the Principal of any deviation from the requirements of thisSpecification which is considered to be necessary in order to comply with national and/or local regulations. ThePrincipal may then negotiate with the Authorities concerned, the objective being to obtain agreement to follow thisSpecification as closely as possible.






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6.2. CROSS REFERENCES

Where cross-references to other parts of this Specification are made, the referenced section number is shown inbrackets. Other documents referenced by this Specification are listed in (Part 5).

7. DEVELOPMENT

AMENDMENTS / SUPLEMENTS TO ANSI/ASME B73.1-2001 R (1999)

SECTION 2 - ALTERNATIVE DESIGN

2.1 (Addition) Pumps shall have U.S. dimensions and comply with applicable U.S. standards.

SECTION 4 – DESIGN AND CONSTRUCTION FEATURES

4.1 Pressure and Temperature Limits

4.1.3 (Addition) The effect of temperature on the alignment or on the loading that piping imposes on pumps should beconsidered to ensure that the design is compatible with the pumping temperatures.

4.2 Flanges

4.2.1 (Modification) All pumps shall have flanged suction and discharge nozzles of equal ASME pressure /temperature ratings. Screw-on flanges shall not be used.

4.2.2 (Modification) Flange bolt holes shall straddle the horizontal and vertical centerlines.

4.6 Shaft Seals

4.6.7 (Addition) The pump manufacturer shall be responsible for the selection and performance of the mechanicalseal, assuring that all components are compatible with the maximum allowable working pressure of the pump. Pumpswith packing are not acceptable.

4.6.8 (Addition) Mechanical seals shall be designed and manufactured according to API Standard 682, assuring thatthe seal will have been type tested.

4.6.9 (Addition) Mechanical seals shall comply with the requirements API 682 3rd

edition, table 1. API 682 3rd

edition,table 2 is rejected and not acceptable. The basic API seal compliance requires cartridge seals. Hooked sleeves arenot considered to be a cartridge design.

4.12 Miscellaneous Design Features

(Deleted)

4.12.1 Safety Guards

4.12.1 (Modification) Non-sparking coupling guard 1/16 inch minimum thickness, solid plate (not open mesh)construction, shall be provided. Coupling guards shall be easily removable and shall be sufficiently rigid to withstanddeflection and prevent rubbing as a result of bodily contact. Where bolts or screws are used they shall be 3/8 inchnominal diameter. Guards shall be made of spark resisting materials, as aluminum or aluminum alloys with amaximum content of 2% magnesium or 0.2% copper, copper or bronze.






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4.13 (Addition) The pump vendor shall coordinate the design, and ensure the satisfactory functioning of the complete

unit, i.e. pump, driver, transmission, seals and other ancillaries. In cases where the pump vendor supplies equipmentthat he has not manufactured, he shall ensure that the designs of these are compatible with each other and with hisown equipment in all respects. In particular, they shall be compatible dimensionally, in performance, in control and invibration such that a fully integrated unit is achieved.

The satisfactory functioning of the complete unit shall form part of the pump vendor's guarantee.

4.14 (Addition) The size of the selected impeller shall comply with the following requirements:

a. Pumps with constant speed drivers shall have impeller diameters such that at least 10% increase in head at thisrated capacity can be obtained by installing a large diameter impeller of the same pattern. A 5% increase in head isacceptable for multi-stage pumps.

b. The size of the selected impeller cannot be the maximum or the minimum designed for the casing.

c. Impeller reduction below 80% of maximum diameter is not acceptable. Impeller reduction is an index relating the designdiameter (rated flow) and the maximum diameter of the impeller.

4.15 (Addition) The margin between NPSHr water basis and NPSHa shall be at least 3 ft, from the minimumcontinuous stable flow up to and including the rated capacity of the pump.

4.16 (Addition) Suction specific speeds (Nss) above 11000 require the Purchaser's approval. Lower values of Nssshall be always a reason for preference.

NOTE: The units in the formula used to calculate the above value of suction specific speed are as follows:

Flow rate in gpm

Rotational speed in revolutions per minute;

NPSH in feet

4.17 (Addition) Sound levels shall provide both maximum sound pressure and sound power level data per octave bandfor the equipment.

4.18 (Addition) Pumps, drivers and accessories shall be designed for outdoor, unprotected installation in the corrosiveand tropical environmental conditions without any additional protection unless otherwise specified.

SECTION 5 – GENERAL INFORMATION

5.1 Application

5.1.9 (Addition) The vendor shall operate a quality management system to ensure that the technical requirements areachieved. The vendor's quality system should be based on the appropriate part of ISO 9001. The vendor shall ensure

that QA requirements specified in the enquiry and purchase documents are applied to all materials, equipment andservices provided. All materials, equipment and engineering works will be subject to ECOPETROL and/or his representative inspection.Inspectors will have free access to manufacturer and subcontractors shops.

5.1.10 (Addition) All NDT procedures shall be subject to approval and shall form an integral part of the manufacturer’sQA documentation. Pressure containing castings shall be inspected depending of the pressure / temperature factors,and shall be liquid penetrating or magnetic particle tested.

5.1.11 (Addition) Visual Inspection shall be performed in accordance with ASME V, Article 9. All surfaces shall beinspected. Acceptance criteria for pressure-containing steel castings shall be in accordance with MSS SP-55.






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Acceptance criteria for other parts shall be in accordance with the material specification and the Manufacturer's

documented procedures.

5.2 Tests

5.2.1 Hydrostatic

5.2.1.1 (Addition) All welded attachments to casing, up to and including first flange, shall be completed prior tohydrostatic testing and final machining of pressure casing. Pressure casing shall be left unpainted for the hydrostatictest. The pump must not be assembled. Mechanical seals must not be installed. All pump pressure containing partsshall be tested to the same pressure.

5.2.4 (Addition) Vendor shall exactly inform in the proposal the quoted power and the rated power tolerance. Pumprated performance is evaluated on directly measurable characteristics only.

5.2.5 (Addition) Within ten weeks after receiving the purchase order, the vendor shall submit to the purchaser for hisapproval, detailed procedures for all tests and all specified optional tests, including acceptance criteria for allmonitored parameters.

5.2.6 (Addition) Normally pumps are purchased in pairs. Anyway, each pump shall be full tested. Spare pumps shallbe full tested too. Each pump shall be considered independent equipment.

7. DOCUMENTATION

7.5 Preparation for Shipment

(Addition) Equipment shall be suitable prepared for 6 months outdoor storage. Vendor is responsible to packing andprotects the equipment before of shipment.

7.6 Vendor’s Data (Addition) Vendor is responsible to submit in the required quantities all documents, drawings, specifications,procedures, reports and any other document required in the material requisition. Each document will be subject toECOPETROL S.A. and/or his representative approval. Each document shall be issued so many times as it isnecessary, up to obtain the approval.

(Addition) With the proposal Vendor shall furnish preliminary drawings including all principal dimensions, the size andlocation of every connection to the equipment and base plate and the weights.

7.7. Guarantees and Warranty

The equipment, including pump, driver and any other components shall be guaranteed for satisfactory mechanical andhydraulic performance at all operating conditions specified on the data sheets, including the range between minimum

continuous stable flow and rated flow.

During the guarantee period, the vendor shall replace or repair the goods or any part thereof found to be defective dueto faulty material without any cost to the purchaser.

7.8 Health, Safety and Environmental Conditions “HSE”

For the scope of supply, the Contractor or Manufacturer shall follow and apply all the standards and regulatorypublications regarding HSE inherent to this type of work. As a part of the purchase order, the technical assistance forpre commissioning and start up operation shall be included. The whole personnel of the Contractor or Manufacturershall use during the jobs security shoes, gloves, security clothes, harness in case of works in height and any another



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Ecp-Vst-p-mer-et-007 Technical Specification for Centrifugal Pumps Ansi b73.1 - 2001 (r 1999)