specification for centrifugal pump
TRANSCRIPT
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7/21/2019 specification for centrifugal pump
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7/21/2019 specification for centrifugal pump
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2of 23
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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3of 23
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
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
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
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
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
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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6of 23
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
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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7of 23
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
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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8of 23
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
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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9of 23
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
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
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
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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11of 23
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
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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12of 23
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
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
6.4.3.14 (Modification)
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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13of 23
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
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
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
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
6.9.2.10 (Modification)
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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15of 23
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
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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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
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
6.12.4.1 (Modification)
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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7/21/2019 specification for centrifugal pump
17/23
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
17of 23
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
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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18of 23
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
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.
7.3.2 (Modification)
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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19of 23
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
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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7/21/2019 specification for centrifugal pump
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20of 23
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
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
8.1.1 (Modification)
b) Required timing for advance notice is indicated on the Purchase Order.
8.3 Testing
8.3.1 General
8.3.1.1 (Modification)
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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21of 23
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
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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7/21/2019 specification for centrifugal pump
23/23
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
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
9.3.6.2 (Modification)
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