specification for centrifugal pump

7/21/2019 specification for centrifugal pump

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This document with all its rights is the property of BUPC and must be held in confidence. No disclosure, reproduction or other use of the document in whole or parts is to be made without the prior consent ofBUPC

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PROJ .NO:3500

BUSHEHR UTILITY AND OFFSITE

PLANT 2&3

Owner:

BushehrPetrochemicalCompany(BUPC)Project No.:BU80

SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

REVISION INDEX

PAG

E

REVISIONREMARK

PAG

E

REVISIONREMARK

0 1 2 3 4 0 1 2 3 4

1 23

2 24

3 25

4 26

5 27

6 28

7 29

8 30

9 31

10

11

12

13

14

15

16

17

18

19

20

21

22


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

A. SCOPE.................................................................................................................................................. 6

B. AMENDMENTS TO API .............................................................................................. 7

1. SCOPE ........................................................................................................................ 8

2. NORMATIVE REFERENCE ....................................................................................... 8

6. BASIC DESIGN ........................................................................................................... 8

6.4. NOZZLES AND PRESSURE CASING CONNECTIONS.................................................. 12

6.4.1 CASING OPENING SIZES.......................................................................................................... 12

6.4.2 SUCTION AND DISCHARGE NOZZLES............................................................................... 12

6.4.3

AUXILIARY CONNECTIONS..................................................................................................... 12

6.6 ROTORS................................................................................................................................................... 13

6.7 WEAR RINGS AND RUNNING CLEARANCES..................................................................... 13

6.9 DYNAMICS.............................................................................................................................................. 14

6.9.2 TORSIONAL ANALYSIS................................................................................................................. 14

6.10 BEARINGS AND BEARING HOUSINGS................................................................................... 14

6.10.2 BEARING HOUSINGS................................................................................................................... 14

6.12 MATERIALS.......................................................................................................................................... 15

6.12.3 WELDING........................................................................................................................................... 15

6.12.4 LOW TEMPERATURE................................................................................................................... 16

6.13 NAMEPLATE AND ROTATION ARROWS........................................................................... 16


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

7. ACCESSORIES ............................................................................................................. 16

7.2 COUPLING AND GUARDS............................................................................................................... 17

7.3 BASEPLATES..................................................................................................................................... 18

7.4 INSTRUMENTATION........................................................................................................................ 18

7.4.2 VIBRATION, POSITION AND TEMPERATURE DETECTORS..................................... 18

7.5 PIPING AND APPURTENANCES................................................................................................ 19

7.5.2 AUXILIARY PROCESS FLUID PIPING..................................................................................... 19

7.5.3 COOLING WATER PIPING............................................................................................................ 19

8.INSPECTION, TESTING, AND PREPARATION FOR SHIPMENT ....................................... 20

8.3 TESTING................................................................................................................................................... 20

8.3.3 PERFORMANCE TEST................................................................................................................ 20

8.3.4 OPTIONAL TEST............................................................................................................................... 21

8.3.4.3 NPSHR TEST............................................................................................................................... 21

8.4 PREPARATION FOR SHIPMENT................................................................................................... 21

9.SPECIFIC PUMP TYPES ................................................................................................... 22

9.2.3 RUNNING CLEARANCES.......................................................................................................... 22

9.2.4 DYNAMICS....................................................................................................................................... 22

9.2.6 LUBRICATION.................................................................................................................................... 22

9.3 VERTICALLY SUSPENDED PUMPS............................................................................................. 23


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

9.3.6 BUSHINGS AND BEARINGS........................................................................................................ 23

9.3.8 ACCESSORIES.................................................................................................................................. 23

9.3.8.3 MOUNTING PLATES.................................................................................................................... 23

10.VENDOR'S DATA ............................................................................................................ 23

10.3.4 PARTS LIST AND RECOMMENDED SPARES................................................................... 23


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

A. SCOPE

1. This specification covers the minimum requirement and basis of design to be used

forthe centrifugal pumps used in Bushehr Petrochemical, Utility and Offsite Plant

Project and shall be used together with information given in the order and/or data

sheets.

2. Compliance with this specification and/or other referenced specifications and

standards, and/or information given in the order, and/or review of drawings by

Purchaser does not relieve the pumpVendor of responsibility to provide equipment

suitable for heavy and continuous duty and for thespecified service conditions.

3. The paragraph numbers given in the section B refer to API 610-11th Ed. that is

integral part ofthis specification.

Requirements are indicated as Addi tions , Modification , New or Substitution to

the relevantparagraph of API 610 which their meaning are as the following:

Deletion:The clause in referenced standard is deleted without any replacement.

Addi tion: This is an additional item under one of the major headings. It carries its own

paragraph number.

Modification: Part of reference standard is modified and/or a new description is added to

that clause while the rest of paragraph is still valid.

New:This clause was not existed in reference standard and newly added.

Substitution:The clause in reference standard is deleted and replaced by the new

clause in this Standard.

When optional paragraphs marked with a bullet ()in API standards are not

mentioned in this specification, in the general specification attached to the requisition

or in the Data Sheets it isunderstood that option is not required.

4. Definitions:

PROJECT: Detail Engineering & Procurement Services for Bushehr Petrochemical, Utility

and Offsite Plant in Assaluyeh, IRAN

OWNER:BUSHEHR Petrochemical CompanyTehran, IRAN (BUPC)

MANAGING CONSULTANT (MC):Khobregan Andish Afagh (ThinkXpert)

CONTRACTOR:NARDIS Company

SUBCONTRACTOR:Means any company or person subcontracted performance of any


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

part of the work; Subcontractors include Vendors and Suppliers

PURCHASER: The company employed or given a contract by the Owner to

provide engineering,procurement and construction services totally or partially for the

specified job.

VENDOR: Any person or company employed or given a contract by the Purchaser

to perform aspecifiedtask or to supply any services, equipment or system.

INSPECTOR: Person assigned by the Purchaser or Owner to inspect the specified

services, equipmentor system being providedby the Vendor.

5. PROJECT REFERENCED DOCUMENTS/DRAWINGS

The following project documents are also applicable and shall be followed by vendor in

design and fabrication of pumps and relevant ancillaries.

SPECIFICATION FOR INDUCTION LV MOTOR BU-80-B-000-EL-SPC-009

SPECIFICATION FOR INDUCTION MV MOTOR BU-80-B-000-EL-SPC-010

SPECIFICATION FOR ELECTRICAL INSTALLATION BU-80-B-000-EL-SPC-016

SPECIFICATION FOR ELECTRICAL REQUIREMENTS FOR

PACKAGES

BU-80-B-000-EL-SPC-017

SPECIFICATION FOR INSTRUMENT & CONTROL

SYSTEMS ON PACKAGED UNITS

BU-80-G-000-IN-SPC-005

SPECIFICATION FOR FIELD INSTRUMENT BU-80-G-000-IN-SPC-011

SPECIFICATION FOR INSTRUMENT INSTALLATION BU-80-G-000-IN-SPC-015

SPECIFICATION FOR PAINTING BU-80-B-000-PI-SPC-008

MECHANICAL DESIGN CRITERIA BU-80-B-000-ME-DCR-001

SPECIFICATION FOR PRESSURE VESSELS BU-80-B-000-ME-SPC-006

PROCESS DESIGN CRITERIA BU-80-B-000-PR-CRY-001

BASIC ENGINEERING DESIGN DATA BU-80-B-000-PR-BOD-002

UTILITY & SITE CONDITION BU-80-B-000-PR-BOD-002

PIPING MATERIAL SPECIFICATION BU-80-B-000-PI-SPC-004

ALLOWABLE NOZZLE LOADS FOR PRESSURE VESSLES

HEAT EXCAHNGER , PUMPS

BU-80-B-000-PI-SPC-003

PACKING & MARKING PROCEDURE BU-80-G-000-QC-PRC-002

SHIPPING & MATERIAL DELIVERY PROCEDURE BU-80-G-000-QC-PRC-003

MATERIAL HANDLING PROCEDURE BU-80-G-000-QC-PRC-004

B. AMENDMENTS TO API

01


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

1. SCOPE

1.1 (New)The SI system of measurement shall be used exclusively in all technical

documents, drawings,calculation sheets with the exception of ANSI flanges and

NPT tapered threading.

2. NORMATIVE REFERENCE2.1 (New)

The auxiliary systems of centrifugal pumps, such as lubricating systems, seal

flushing systems, cooling systems etc. shall be built in accordance with the

requirements of API 610 11th Ed. andAPI 682 3st Ed., as applicable.

General specifications for engineering disciplines (such as Pressure

Vessels and HeatExchangers, Instrumentation, Piping etc.) are not applicable to

these auxiliary systems.Equivalent internationally recognized Codes and

Standards (such as DIN, ISO, JIS etc.) may besubstituted to the Codes and

Standards referred to by API for Pressure Vessels, HeatExchangers,

Instrumentation, Piping and Materials.ASTM equivalent materials shall be provided on the centrifugal pumps data sheet.

6. BA SIC DESIGN

6.1 General

6.1.1 (Addition)The Vendor shall only offer centrifugal pumps that have been already used in

similar design forthe same operating conditions.

The design shall be of the latest design evolution and shall be in accordance with

the standardslisted in the requisition.

The word auxiliaries are interpreted to include the following items:

- Driver

- Drive couplings and guards

- Gearbox

- Controls and instrumentation

- On-skid piping, wiring and fittings

- Flushing system

- Lube oil system

- Base plate


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PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

The pump vendor shall assume engineering responsibility for the entire unit, including

the abovecomponents..

6.1.8 (Modification)The Net Positive Suction Head Available (NPSHA) shall exceed the Net Positive

Suction Head Required (NPSHR) by at least 1 meter throughout the range from

minimum continuous stable flow up to and including the rated capacity. If the

suction pressure at the pump is less thanatmospheric, this margin shall be at least

2 meters. From rated capacity up to 125% of bestefficiency point the NPSHR shall not

exceed the NPSHA.

Reference for the NPSH3 shall be:

a. Pump shaft centreline for horizontal pumpsb. First impeller eye for vertical pumps

For firewater pumps, the NPSH3 shall be checked at 150% of ratedcapacity.

6.1.9 (Addition)Pump Suction Specific Speed shall not exceed 15100 metric units (rev/min,m3/h and m)equivalent to 13000 in customary units (RPM, GPM, Ft).

When pump is expected to operate at less than 70% of Best Efficiency Point(flow) suctionspecific speed above 14000 (12000 customary units) is notacceptable.Suction Specific Speed is based on flow and NPSH3 (3% head decay of first

stage) at BestEfficiency Point of maximum diameter impeller.

This paragraph does not apply to pumps with inducer (use of inducer is subjectto Purchaserapproval).

6.1.11 (Modification)a. Pumps shall have stable head / flow curve which continuously rise to shutoff.

b. In general, head ratio from rated point to shutoff shall be at least 10%. Unless

otherwise specified in relevant pump data sheet, maximum head rise shall be

20%.

c. High speed, high head, low flow pumps may not comply with above a) and b)

requirementswith Purchaser and Owner approval.

Vendor of low flow, high head pumps to advise Purchaser if fixed or automatic

minimum flowprotection is required.

d. Pump in parallel operation shall have the same shutoff pressure (which shall be

confirmed atthe performance test).

Differences shall be 1 %, based on the pumping system characteristics. API

tolerance shallbe always met.

This requirement does not apply in case of parallel operation of existing and

new pumps. In such a case parallel operation shall be evaluated case by case.

e. Firewater pump characteristics shall follow NFPA 20 requirements.

0


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

f. Using discharge orifice as a means of providing a continuous rise to shut-off

is subject toOwner approval

6.1.13 (Addition)When pumps handle a product containing dissolved gas, the rated point shall

be selected asclose as possible to the BEP within the allowable range of API.

Cooling water pumps and boiler feed water pumps selection shall follow the above

guideline.

6.1.14 (Addition)Maximum permissible noise value will be Lp(1)


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

Unless otherwise specified, pumps, drivers and accessories shall be designed

for outdoorinstallation in the specified climatic zone and environments without any

additional protection.Weather and environmental conditions are given in the

Basic Eng in ee rin g Design Da ta, attached to the requisition.

6.1.35 (New)Rated curve diameter shall not be lower than minimum diameter of published

performance curve.In addition impeller reduction below 80% of maximum diameter

is not acceptable.

6.1.36 (New)Vendor shall state in his proposal the minimum and maximum allowable safe flows

for all pumps for continuous operation, considering temperature rise, vibration

limits and NPSH limits.

6.1.37 (New)For each pump employing a thrust-balancing device, vendor shall state:

a. The balancing flow both for the new and maximum allowable clearances overthe allowableoperating region.

b. Normal and maximum allowable pressure behind the balancing device.

6.1.38 (New)Where applicable, horizontally centerline mounted pumps are preferred in all

services.

6.2 Pump TypeSelecting any types specified in Table 3 subjected to Purchaser/Owner approval.

6.3 Pressure Casing

6.3.6 (Modification)Pressure casing design may be segmented for multistage pumps with high

differential head innon-hydrocarbon service, subject to Purchaser/Owner approval.

Pressure casing shall be designed for the maximum impeller diameter.

In general all pump pressure parts shall be designed for the maximum

allowable working pressure. When this requirement is non-practical or

unfeasible, Vendor shall give alternatesolutions. However all parts subjected to

suction pressure shall be hydrostatically tested at themaximum pump discharge

pressure. Vendor shall advise if a suction side safety valve isrequired.

6.3.7 (Addition)Applied corrosion allowance and minimum casing thickness to be indicated on

relevant data sheet.


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

6.3.10 (Modification)For radial split casing, solid metal, metal clad or spiral wound gaskets are

preferred. These types of gaskets are mandatory for pumping temperature over

260 C (500 F).

6.3.17 (New)Casing support shall be designed to allow thermal expansion without casing

distortion andwithout axial or radial movement of shaft at coupling side end.

6.3.18 (New)Vertical pumps shall have flanged bowls and column parts.

6.4. Nozzles and Pressure Casing Connections6.4.1 Casing Opening Sizes

6.4.1.1 (Addition)All pumps shall have flanged suction and discharge nozzles of equal ANSI

pressure /temperature ratings. Screw on flanged shall not be used.

Horizontal pumps with an operating temperature above 200C shall have top

suction anddischarge nozzles.

6.4.2 Suction and discharge nozzles

6.4.2.1 (Addition)

Flanges rating facing and finishing shall be indicated on individual pump Data

Sheet.

6.4.2.4 (Modification)

If the existing flange thickness exceeds the maximum dimension, as per the

relevant project requirements, Vendor shall inform the Purchaser for decision if

the thickness can be retained inview of bolt length.

6.4.3 Auxi liary connections


Vent connections (when necessary) and drain connections shall be flanged for all

pumps. When specified by Purchaser, Vendor shall provide also vent and

drain valve in accordance withapplicable piping class. All drain and vent valves

shall be braced.

In case those valves are supplied by Purchaser, Vendor will provide flanges at limits

of supply.

In case of multiple vents/drains, each shall be valved and manifolded to single-flangedconnection at the baseplate edge.

Pumps in vacuum service shall have vent connection, which has to be connected


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

to the suctionvessel.

6.4.3.15 (Addition)When required, pressure gauge for suction and discharge should be fitted on the

process piping.

6.4.3.16 (New)Arrangement of flange bolt holes shall be as per ANSI B-16.5, i.e.:

a. Side or end nozzle: symmetrical about the vertical centerline (no bolt hole on theline)

b. Top nozzle: symmetrical about the centerline parallel to the pump (no bolt hole

on the line)

6.6 Rotors

6.6.2 (Modification)

Impellers shall be always cast construction and shall be cast at maximum

diameter, to be trimmed to the final rated diameter to be selected on theactual motor speed that will be confirmed by Purchaser during Project

execution. Castings at rated diameter are not acceptable.Impeller shall be closedtype except when otherwise specified by licensor.

6.6.6 (Addition)

Shaft sleeve shall always be provided.

Shaft sleeves for seals involving a flexible member sealing between sleeve and

rotation seal ringshall have hard facing on the contact area(s) of the sleeve

(minimum 50 Rockwell c).

6.6.9 (Addition)Use throat bushing, as bearing shall not be allowed when shaft deflection is

considered. The above applies, in particular, to vertical in-line pumps.

6.6.15 (New)The shaft shall be also suitable for the momentary torque resulting from

acceleration anddeceleration of motor drivers, without yielding.

6.7 Wear Rings and Running Clearances

6.7.1. (Modification)

Front and back wear rings with impeller balancing holes, shall be furnished,

unless back wearrings have to be deleted for axial load balance purposes, or to

insure sufficient sealoperatingpressure. In case back wear rings are not providedimpeller-balancing holes shall not be done.For single stage pumps, impellers

with axial thrust balanced by back radial vanes are notaccepted.


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

Balancing holes in the impeller shall be designed in such a way that the necessary

seal chamber pressure is maintained for a reliable operation of the shaft seal.

6.7.2. (Addition)

Casing bushing and interstage shaft sleeves shall be surface hardened. Interstage

shaft sleevesshall be harder than casing bushing.

6.7.3. (Modification)

Each wear parts shall have three locking pins or threaded dowels, as a

minimum. Unlessotherwise specified, tack welding of wear rings shall not be used.

6.9 Dynamics

6.9.1.1

All pumps with hydrodynamic bearings operating above the first critical speed

shall have the amplification factor checked on test by the method specified (coast-

down recording).

6.9.2 Torsional analysis


For the cases included in para 6.9.2.2, the torsional analysis report shall be

submitted.

6.10 Bearings and Bearing housings

6.10.1 Bearings

6.10.1.2 (Addition)In case of supply of hydrodynamic thrust collar, such collar shall be replaceable

type and shall bepositively locked to the shaft.

6.10.2 Bearing housings

6.10.2.6. (Addition)Overhung horizontal pumps will be supplied with bearing cover only on coupling

side.Dismounting of line bearing can be carried out only through thrust bearing

hole and not throughline bearing hole.

Once shaft is dismounted from bearing frame is very easy to dismantle line

bearing which isslightly shrunk on that shaft.

All pumps shall be provided with replaceable labyrinth end seals as per API tohave accessibilityof bearing installation area for repair, even for radial bearing non-

drive end side.Casting diameter in labyrinth area shall not be necessarily equal to bearing outerdiameter.


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

6.10.2.11 (Modification)A flat surface at least 25 mm in diameter shall be provided for the location of

magnetic basevibration measuring equipment.

6.10.2.13 (New)Both rings and flingers shall be of non-sparking material.

6.12 Materials

6.12.1 General

6.12.1.1 (Additional)Vendor may propose equivalent materials in accordance with internationally

recognized standardsuch as AFNOR, DIN, ASTM, UNI, JIS or ISO.

If equivalent material is provided, a comparison list shall be submitted with the Bid.

Materials are specified in each individual pump data sheet: material combinations

shall be thesame as indicated in table H-1 of appendix H as required by process

Licensor.

6.12.1.8 (Modification)In general, material certificates per EN 10204 Type 3.1 or equivalent shall be

provided forpressure parts, impeller and shaft.

Conformity declaration is not acceptable for above mentioned main parts.

Vendor shall furnish material certificates that include chemical analysis and

mechanical properties for the heats from which the material is supplied for

pressure-containing castings andforgings, impellers and shafts. Unless otherwise

specified, piping nipples, auxiliary piping components, and bolting are excluded

from this requirement. Supplier shall make available forthe Purchaser inspectors,

all documentation available on furnished casting including purchasing

specifications, shipping documents, and material certification of compliance.

6.12.3 Welding

6.12.3.1 (Addition)

Weld able grades of steel castings major repairs shall be undertaken after

specific review fromPurchaser has been obtained on preparation, weld procedure,

heat treatment and inspection and according to the requirement of paragraph

6.12.3.1.

6.12.3.5 (New)For each weld, the following documents shall be submitted to Purchaser for review:

a. Welding Procedure Specification (WPS)b. Procedure Qualification Record(PQR)

c. Welding map with reference for identification of welds and parts to be welded


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Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

Full details shallbe included (weld design, sizes, materials, pre-heat and post-heattreatments, etc.)All root weld seams of piping in the system shall be welded with shield gas.

The same alsoapplies to the piping welded at site.

6.12.4 Low temperature


Unless more stringent requirements are indicated in the pump data sheet theVendor shall apply the minimum ambient temperature indicated in the project

Basic Engineering Design Data. The minimum design metal temperature shall be

specified in the pump data sheet.

6.13 Nameplate and Rotation Arrows

6.13.1 (Addition)

Unless otherwise specified, nameplate shall be in English language. The data

shall be asspecified in data sheets.

6.13.2 (Addition)To be added on nameplate also as follows:

- Minimum continuous flow

- NPSH required at rated capacity in meter

-All the data shall be referred to final data asbuilt

- Manufacturer's name.

7. ACCESSORIES

7.1 Drivers

7.1.1 (Addition)The following conditions have also to be considered in driver sizing:

a. Differential head shall be calculated based on minimum specific gravity

b. Driver power shall be calculated based on maximum specific gravity

c. Design pressure shall be calculated based on maximum specific gravity

d. In case of pumps operating at ambient temperature, the viscosity

difference betweenminimum, rated and maximum ambient conditions shall

be considered for driver selection

7.1.4 (Modification)Electric motors shall be in accordance with relevant job specifications Doc. No.

BU-80-B-000-EL-SPC-009 : Specification For Induction LV Motor and BU-80-

B-000-EL-SPC-010: Specification For Induction MV Motor attached to the


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Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

requisition. For the calculation of the rating of the pump driver, gear losses shall be

included before any rating factors are applied. Table 12 shall be applied for

calculation of electric motor power.

7.1.6 (Addition)Motors shall have a sufficient power to permit pump operation with water at

pump minimumcontinuous flow, in case of fluids with specific weight 0,6 or less.

Centrifugal pump driver horse power shall be adequate for full curve protection ofthe pump for the rated impeller in case of pump-open valve start-up, pump in

parallel operation, pump operated under level control and when required by

process Licensor.

7.1.10 (Addition)Gear unit shall generally comply with API Std. 677.

Gear unit and geared fluid coupling (if any) larger than 1000 kW shall be in

accordance with APIStd. 613.

7.2 Coupling and Guards

7.2.2 (Addition)

a. Coupling shall be dry (not lubricated), spacer type, flexible elements, multiple

disks of corrosionresistant material.

b. Coupling type shall be specified in the pump data sheets by Vendor.

c. Shaft coupling for driver rating larger than 1000 kW shall be in accordance

with API Std.671.

d. Service factor shall be 1.5 minimum on motor nameplate for centrifugal

pumps directly driven by electric motors, unless a more stringent limit is

specified by the Purchaser in theorder or by the coupling technical bulletin.

e. Service factors for different drivers shall be always selected in accordance

with coupling technical bulletin, based on driver nameplate.

f.Couplings between centrifugal pumps and diesel engine drivers shall be

elastic, withelastomeric element, in order to limit torsional resonance.

7.2.7 (Addition)For motor driven pumps, the coupling and coupling-to-shaft juncture shall be

suitable to transmitmotor starting torque or motor re-acceleration torque without

yielding.

7.2.13 (Modification)a. In addition to other specified safety requirements coupling guard shall be

designed to withstand a minimum static vertical load of 1000N and the


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SPECIFICATION

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NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

contained coupling parts in caseof failure.

b. Coupling guards shall be manufactured from spark-proof materials (such as

aluminium with less than 6% magnesium)

7.3 Baseplates

7.3.1 (Addition)

Baseplateshall be fabricated steel.


Base plate shall extend under the full length and width of pump, drive and auxiliary

systems.

7.3.5 (Addition)Driver shall be fixed on the base plate by means of bolts directly screwed on

mounting padsthreaded holes. Slotted holes for driver hold-down bolts are not

acceptable.

7.3.6. (Addition)1 set of shims with different sizes shall be provided.

7.3.10 (Modification)Epoxy grout shall be applied only for pump with installed power greater than 250

kW.Other pumps are installed with cementitious grout.

7.3.17 (Modification)Transverse alignment screws shall be provided for all driving components heavier

than 100 Kg(220 Lbs.).Axial alignment screws shall be provided for all driving components heavier than200 Kg (440Lbs.).

7.4 Instrumentation

7.4.1 (Addition)

The scope of supply, type, designs and installation of instruments to be supplied

by the pumpVendor is stated in the relevant data sheet or requisition.

The pump Vendor shall co-ordinate the instrumentation of the drive supplier.

Instrument Vendor list shall be approved by Purchaser.

7.4.2 Vibration, position and temperature detectors

7.4.2.2 (Modification)Provision for future installation of probes is required. Single axial probe provision is

acceptable incase of space limits.


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Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

7.4.2.3 (Modification)Provision for future installation of probes is required

7.5 Piping and Appurtenances

7.5.1 General

7.5.1.10 (New)

Threaded flanges are not acceptable.Compression fittings are not acceptable for product and utilities piping: metal -to-

metal sealingweld connectors shall be used.

Balancing lines for multistage pumps shall be flanged, threaded connections are not

acceptable.

Screwed connections to the seal end plate are acceptable.

7.5.2 Auxiliary process fluid piping

7.5.2.1 (Addition)

Horizontal pumps with more than 8 stages, in high temperature service, shall be

provided with multipoint warm-up injection from the common discharge piping,complete of choke tube (multipleorifices) and isolating valves; to avoid pump start-

up with bent shaft.

The pump casing shall be provided with one skin thermocouple on casing top

and one skin thermocouple on casing bottom: pump start-up shall be inhibited in

case differential temperatureis higher than 10 C.

7.5.2.4 (Addition)Orifices shall be AISI 316 or equal, unless otherwise specified.

7.5.2.7 (Addition)

Cooler on flushing lines shall be of coil type with process fluid inside the coil. Coilsshall be madeof 316-L stainless steel unless otherwise specified.

When normal cooling water is used, coil or tubes skin temperature shall not

exceed 100 C (212F).

7.5.2.8 (Addition)Quench condensate outlet shall be piped to the baseplate drain rim or drain pan.

7.5.3 Cooling water piping

7.5.3.3 (New)

Cooling systems shall be equipped with closed sight flow indicators in eachcooling water outletbranch. Vendor shall follow API 682 for cooling of flushing fluid

system.


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SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

8. INSPECTION, TESTING, AND PREPARATION FOR SHIPMENT

8.1 General

8.1.1 (Addition)Vendor shall comply with requirement of Purchase Order.

Unless otherwise indicated on the data-sheet, extent of inspection shall be asfollows and shallbe in confirmed by the inspection and test plan attached to the

material requisition:

Witness of hydraulic test on pump casings

Witness of running test and strip inspection of pumps, as well as NPSH tests if

applicable

Witness of performance test

Final inspection of all pumps

For electric motor drivers refer to the electric motor job specification BU-80-

B-000-EL-SPC-009 : Specification For Induction LV MOTOR and BU-80-

B-000-EL-SPC-010: Specification For Induction Mv Motor


b) Required timing for advance notice is indicated on the Purchase Order.

8.3 Testing

8.3.1 General


Test procedures shall be submitted in accordance to the drawing submittal

schedule attached tothe order.

8.3.1.4 (New)The extent and type of test to be witnessed and/or observed will be indicated

on pump datasheets and inspection activity plan.

8.3.2.7 (Addition)Any repairs to the pressure casing components shall require a repeat of the

hydrostatic test.

8.3.3 Performance test

8.3.3.2 (Addition)

j. Contract driver shall not be used for shop performance test, unless otherwise

specified.


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SPECIFICATION

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NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

8.3.3.3 (Addition)

f. After all parameters have been stabilized, high energy and multistage pumpsshall be run atrated flow and speed for at least one hour.

8.3.3.7 (Addition)e. Modification of rotors for all types of pumps requires the recheck of the rotor

balance.

8.3.4 Optional test

8.3.4.2 Mechanical running test

8.3.4.2.3 (New)Sleeve bearings shall be made accessible after the mechanical running test for

check of surfacesand clearances

8.3.4.3 NPSHR test

8.3.4.3.5 (New)a. NPSHR test with suction valve throttling is not acceptable unless pump

capacity exceedsshop test capability for suppression test.

b. NPSHR test shall be performed when the difference between NPSH Available

and required is 1.0 m or less. For pumps with sub atmospheric suction

pressure NPSH test shall becarried out when the difference between NPSH

available and required is 2 or less.

c. NPSHR test shall be always performed for multistage pump in BFW service

or for doublesuction pumps with capacity higher than 800 m3/h in Cooling

Water service.

8.4 Preparation for Shipment

8.4.1 (Modification) six months to be changed to 12 months

(Addition) requirement of project specification Packing & Marking Procedure: BU-80-G-000-

QC-PRC-002 and Shipping & Material Delivery Procedure: BU-80-G-000-QC-PRC-003 shall beconsidered by SUPPLIER.

8.4.2.10 (New)

Packing used in tests shall be removed from the fire pumps and new packing shall

be furnishedfor installation in the field suitable to the duty.

8.4.12 (Addition)All rust preventives applied to the unpainted parts of the equipment shall be

easily removablewith hydrocarbon solvents.

Vendor shall also refer to the purchase order requirements.

01


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PROJ .NO:3500


PLANT 2&3

Owner:


SPECIFICATION

FOR

CENTRIFUGAL PUMP

NARDIS Doc No.:

BU-80-B-000-MA-SPC-001

Owner Doc No.:

BU-80-B-000-MA-SPC-005

Rev: 01 MC:

ThinkXperT

9.3 Vertically Suspended Pumps

9.3.3 Rotors

9.3.3.2 (Addition)When split shaft construction is accepted by Purchaser, due to excessive line

shaft length, keyed couplings shall be provided.

9.3.6 Bushings and bearings


Vertical pumps shall have oil lubricated thrust bearing in pump head. Thrustbearing shall havesame load capability in both directions.

9.3.8 Accessories

9.3.8.1 Driver

9.3.8.1.1 (Modification)Vertical pump and motor assemblies shall be designed for safe reverse rotation.

9.3.8.3 Mounting Plates

9.3.8.3.3 (Modification)

Vendor shall provide a separate mounting plate to be grouted by Purchaser to

the concretefoundation unless otherwise indicated on Data Sheet.

10. VENDOR'S DATA

10.1 General

10.1.1 (Modification)Vendor data requirements shall be as specified in the requisition and specification.

10.3.4 Parts list and recommended spares

10.3.4.2 (Addition)Spare impellers shall always be proposed and supplied at maximum diameter

10.3.6 (Addition)Performance / Mechanical Guarantee

The VENDOR shall have the final and total responsibility for the design and

performance of all equipment supplied under this specification. The VENDOR shall

provide a mechanical and performance guarantee for the equipment. The

guarantee terms are covered under the fabrication/suuply contract document. In

addition to these terms, the VENDOR guarantee shall cover a period of 12 months

after the commissioning of the completed system by the OWNER or 18 months

after shipment, whichever is longer. The guarantee shall cover both, the supply of

material, design and manpower to make good of any defect for all equipment and

components.

VENDOR shall also guarantee the following: Supply of spares and upgrades for at least 10 years (after sale services)

Hardware and Software Services for at least one year after Commissioning

0

specification for centrifugal pump

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