1 Scope …………………………………………………………………………………………….2 References ……………………………………………………………………………………3 Definitions ……………………………………………………………………………………4 General ……………………………………………………………………………………5 Inspection ……………………………………………………………………………………5.1 General ……………………………………………………………………………………5.2 Material Certificates ………………………………………………………………………….5.3 Material Inspection …………………………………………………………………………..6 Testing ……………………………………………………………………………………7 Retest and Dismantling Inspection ……………………………………………………..8 Repairs ……………………………………………………………………………………9 API 610 Pumps ………………………………………………………………………………9.1 Inspection ……………………………………………………………………………………9.2 Mechanical Inspection …………………………………………………………………….9.3 Testing ……………………………………………………………………………………10 ASME B73.1M, B73.2M, and ISO Pumps…………………………………………..10.1 Inspection ……………………………………………………………………………………10.2 Testing ……………………………………………………………………………………11 Manufacturer’s Standard, Sealless, and Firewater Pumps ……………………11.1 Inspection ……………………………………………………………………………………11.2 Testing ……………………………………………………………………………………12 Inspector’s Checklist ……………………………………………………………………….13 Revision History………………………………………………………………APPENDIX A – API 610 Pumps ………………………………………………………………APPENDIX B – ASME B73.1M, B73.2M and ISO Pumps …………………………..APPENDIX C – Manufacturer’s Standard, Sealless and Firewater Pumps
1 Scope
1.1 This standard is for shop inspection and testing of centrifugal pumps manufactured to
API 610, ASME B73.1M, B73.2M and ISO.
1.2 This standard also covers manufacturer’s standard, sealless and firewater centrifugal
pumps.
1.3 This standard does not modify or supersede SES or project specifications.
2 References
Reference is made in this standard to the following documents. The latest issues,
amendments, and supplements to these documents shall apply unless otherwise indicated.
SABIC Engineering Standard (SES)
G01-S03 Horizontal End Suction Centrifugal Pumps for Chemical Process
G01-S05 Vertical In-Line Centrifugal Pumps for Chemical Process
G01-S06 Centrifugal Pumps for Heavy Duty Services
G01-S08 Horizontal Centrifugal Pumps for Water Service
G01-S09 Vertical Centrifugal Pumps for Water Service
American Petroleum Institute (API)
610 Centrifugal Pumps for Heavy Duty Services, Eighth Edition
American Society for Testing and Materials (ASTM)
E 186 Reference Radiographs for Heavy-Walled (2 to 4
1
/
-in. (51 to 114-mm)) Steel Castings
E 446 Reference Radiographs for Steel Castings up to 2-in. (51-mm) in Thickness
American Society of Mechanical Engineers (ASME)
B73.1M Horizontal End Suction Pumps for Chemical Process
B73.2M Vertical In-line Centrifugal Pumps for Chemical Process
Section III Subsection ND (Nuclear Division)
Section V Nondestructive Examination
Section VIII Div 1 UW-51, and UW-52
Section IX Welding and Brazing Qualifications
2
Hydraulic Institute (HI)
Pump Standard – The Code, Standard, and Specification of HI (Centrifugal Pump Section)
1.6 Centrifugal Pump Tests
5.1 – 5.6 Standards for Sealless Centrifugal Pumps
International Standards Organization (ISO)
1940 Mechanical Vibration – Balance Quality Requirements of Rigid Rotors – Part 1:
Determination of Permissible Residual Unbalance
2548 Centrifugal, Mixed Flow and Axial Pumps – Code for Acceptance Tests – Class C
2858 End Suction Centrifugal Pumps (Rating 16 Bar) – Designation, Nominal Duty Point and
Dimensions
3555 Centrifugal, Mixed Flow and Axial Pumps – Code for Acceptance Tests – Class B
5199 Technical Specifications for Centrifugal Pumps – Class II
9001 Quality Systems – Model for Quality Assurance in Design, Development, Production,
Installation and Servicing
9003 Quality Systems – Model for Quality Assurance in Final Inspection and Test
9004 Quality Management and Quality System Elements – Guidelines
Manufacturers Standardization Society (MSS)
SP-55 Quality Standard for Steel Castings for Valves, Flanges and Fittings and Other Piping
Components – Visual Method
National Fire Protection Association (NFPA)
20 Installation of Centrifugal Fire Pumps
3 Definitions
For the purpose of understanding this standard, the following definitions apply.
Major Parts. Casing, impeller, shaft, and gland cover.
Major Welding Repairs. On castings, those in which the depth of the cavity prepared for
repair welding exceeds 20 percent of the wall thickness, or 25 mm (1 in), whichever is
smaller, or in which the cavity prepared for repair welding exceeds 65 cm2 (10 in2).
Non-witnessed. Inspections/tests noted as ‘required’ shall be non-witnessed
inspections/tests. SABIC may witness at their discretion.
Observed. For inspections/tests noted as ‘observed’, SABIC shall be informed by vendor of
the timing of the inspection/test. SABIC may witness at their discretion.
Waiver. Authorization requested by the vendor to deviate from conformance to specified
requirements. A waiver shall require SABIC approval.
Witnessed. Inspection/test carried out in SABIC’s presence. Vendor shall complete routine
inspection or tests prior to SABIC witness.
4 General
Requirements in this section shall apply to all the pumps specified in this standard.
4.1 SABIC will have entry to all vendor and sub-vendor plants.
4.2 The vendor shall notify sub-vendors of SABIC’s inspection and testing requirements.
4.3 The vendor shall provide at least 10 working days advance notice to SABIC before
conducting witnessed or observed inspections and tests.
4.4 Manufacturing hold points for inspection/testing shall be identified by vendor and
submitted for SABIC approval after receipt of the purchase order.
4.5 The vendor shall provide the facilities, equipment, and apparatus required for
inspections/tests.
4.6 Pump performance test instrumentation shall be calibrated in accordance with HI 1.6.
When no calibration standard exists, the vendor shall calibrate instruments to within
the manufacturers’ tolerances prior to inspection or test. The vendor shall provide
records of instrument calibration to SABIC when requested.
4.7 ASME Weld Procedure Specification (WPS), Procedure Qualification Records (PQR),
and Welder Qualification Records shall be submitted to SABIC for review and
approval.
4.8 Approved copies of WPS, PQR and Welder Qualification Records shall be available
in the vendor’s and sub-vendors’ shops for SABIC review.
4.9 Unless exempted by qualification under 4.9.3, the vendor shall submit a Quality
Assurance and Quality Control (QA/QC) program specific for the pump(s), for
SABIC’s review and approval. This shall be after release of the purchase order, but
before starting manufacture.
4.9.1 The vendor shall implement QA/QC program, and clearly establish the
authority and responsibility of those responsible for the quality system.
Persons performing quality functions shall have sufficient and well defined
authority to enforce quality requirements, initiate, identify, recommend and
provide solutions to quality problems and verify the effectiveness of the
corrective action.
4.9.2 The vendor’s quality system shall conform to ISO 9001, 9003 and 9004. The
quality system shall provide for the planned and systematic control of all
quality-related activities performed.
4.9.3 If the vendor’s QA/QC program and facility, where the work is to be
performed, is ISO 9003 certified, then a copy of the vendor’s ISO 9003
certificate shall be required. In addition, if the vendor’s facility is ISO 9003
certified, SABIC’s QA audit requirements will be waived, unless the vendor’s
QA/QC program indicates areas of concern.
4.9.4 Any deviations to the purchase order and its attachments, including, but not
limited to, the data sheets and narrative specifications for inspection and
testing, shall be sought by the vendor only through waiver format. Any
changes implemented prior to SABIC’s approval shall be subject to rejection.
5 Inspection
5.1 General
Requirements in this section shall apply to all the pumps specified in this standard.
5.1.1 The vendor shall keep the manufacturing data, and inspection and test
reports available for examination by SABIC. Unless otherwise specified in
individual industry standard or SES specification, the data/reports shall be
kept for at least 10 years, or shall be offered to SABIC after 5 years.
5.1.2 The repair welding procedures and the repair welder’s qualification for
weldable grade of castings shall be in accordance with ASME Section IX.
5.1.3 Leaks and defects in pressure containing castings shall not be repaired by
peening, burning-in, or impregnation with plastic or cement compounds.
Repair by welding or by plugging shall be undertaken only when permitted by
the material specification, and in accordance with the procedure detailed in
the material specification.
5.1.4 The scope of shop inspection shall be confirmed with SABIC prior to
manufacture. As a minimum it shall include:
a. A check against approved certified outline drawings for main dimensions,
baseplate dimensions, location of foundation bolt holes, pitch tolerance
between adjacent bolt holes, size/position/rating of flanges and coupling
guard arrangements
b. An inspection of flange face finish
c. A verification that the vendor has performed the specified inspections
and tests with satisfactory results
d. A verification of the required material certification, for example mill test
reports, or certification of material compliance by the vendor for standard
stocked items, and their traceability to the respective components
e. The vendor’s purchase specifications for the items shown on bills of
materials
f. A check of casing wall thickness
g. Measurement of the final clearances
h. A visual check for good workmanship and finish of internals
i. Verification of taper fits with matched plugs and ring set
j. Verification of conformance of painting to specification
k. Verification of casing marking (serial no.), rotation arrow, and nameplate
data
l. Inspection of preparation for shipment, shipping documents, and tags
5.1.5 Cleanliness of the equipment, piping and furnished components shall be
required before and after assembly at the vendor or sub-vendor plant.
5.2 Material Certificates
The vendor shall furnish material certificates in accordance with the following, and
Appendices A to C. Certificates shall be valid only when stamped and signed by the
testing inspector.
5.2.1 Material Certificates and Certificates of Material Compliance are issued by
the manufacturing works, the processing works, or in combination, to attest
to the correctness of materials.
5.2.2 The certificates shall be in English, or shall include an English translation. SI
units shall be used. The certificates shall be suitable for subsequent
microfilming and photocopying.
5.2.3 Material certificate are of the following types:
a. Type ‘I’ Certificates. Certificate of Material Compliance, by which the
manufacturer certifies that the product supplied conforms to the
requirements.
b. Type ‘II’ Certificates. Certificates by which the material manufacturer’s
quality department certifies that the product supplied conforms to the
requirements, on the basis of tests carried out on the delivery itself, or on
standard-specified test specimens related to the delivery. The necessary
testing shall be carried out by the manufacturer.
c. Type ‘III’ Certificates. Certificates as described under Type ‘II’ with the
additional requirement that for the mechanical testing required by the
purchase order/material specification, both the selection of the test
samples and the tests themselves shall be witnessed by an independent
international agency approved by SABIC.
5.2.4 Type ‘II’ and ‘III’ certificates shall contain the following information:
a. Name of material manufacturer
b. Identification number of certificate and its date of issue
c. Material specification (including class, grade and heat treatment
condition, where applicable)
d. Material charge, batch or heat number
e. Test and inspection results
f. Dimensions and quantity covered
g. Name, job title and signature of person authorizing the certificate
h. The additional information required from the purchase order
i. Material manufacturer’s work order number
j. Other references required to demonstrate that the testing and
inspection was performed on the required number of test units
k. Test and inspection results
5.2.5 Type ‘III’ certificates shall also state:
a. Name of independent inspection agency
b. Name of inspector who witnessed the selection and testing
5.3 Material Inspection
5.3.1 Destructive mechanical tests and impact tests, if required, shall be carried
out on test blocks after all heat treatments have been performed.
5.3.2 Radiographic (RT), ultrasonic (UT), magnetic particle (MT), liquid penetrant
(PT), and visual (VI) inspection of welds or materials shall be in accordance
with 5.3.3 to 5.3.7 respectively. Specific inspection requirements for each
pump type are detailed in sections 9, 10 and 11. The personnel performing
and interpreting NDE results shall be progressively qualified.
5.3.3 Radiographic Examination (RT)
a. RT shall be in accordance with API 610 paragraph 4.2.2.2.
b. Critical sections of each casting (including regions of abrupt section
changes), weld ends, and areas adjacent to feeders and risers shall be
fully radiographed. When sections cannot be radiographed, UT shall be
substituted. The vendor shall submit, for SABIC’s approval, details of the
critical sections proposed to receive RT/UT.
c. RT of welds shall be in accordance with ASME Section VIII, Div 1, UW51
(100 percent) and UW-52 (spot). Acceptance standard for castings
shall be in accordance with ASTM E 186 and E 446.
5.3.4 Ultrasonic Examination (UT)
UT inspection shall be in accordance with API 610, paragraph 4.2.2.3.
5.3.5 Magnetic Particle Examination (MT)
6 Testing
a. Dry and wet methods of MT shall be in accordance with API 610
paragraph 4.2.2.4.
b. MT shall be applied to all accessible surfaces, including those exposed
by machining. Indications shall be investigated by light grinding
(minimum depth 1 mm).
c. MT of castings shall be in accordance with ASME Section VIII, Div 1.
5.3.6 Liquid Penetrant Examination (PT)
PT shall only be performed when specified MT is not possible. PT shall be in
accordance with API 610 paragraph 4.2.2.5.
5.3.7 Visual Inspection (VI)
VI shall be in accordance with ASME Section V, Article 9. All surfaces shall
be inspected. Acceptance criteria for pressure-containing steel castings shall
be in accordance with MSS SP-55. Acceptance for other parts shall be in
accordance with the material specification and manufacturer’s documented
procedures.
Requirements in this section shall apply to all the pumps specified in this standard.
6.1 Rotor balance and residual unbalance tests shall be in accordance with ISO 1940 or
API 610.
6.2 Performance and NPSH tests shall be in accordance with the relevant HI or ISO
standards as applicable, except that efficiency shall be for information only and not
for rating.
6.3 When the speed, specific gravity, and viscosity during the test differ from the contract
values, performance evaluation shall be corrected in accordance with the relevant HI
standard.
6.4 Running and optional tests, including all manufacturer’s standard tests, that are not
defined in this standard or in the supporting documents, shall be defined by the
vendor in his proposal. Detailed procedures for all tests shall be submitted for SABIC
review and approval at least 6 weeks before the scheduled test dates. These
procedures shall contain qualifying values for all measured parameters.
6.5 Unless otherwise specified, mechanical seals shall not be used for hydrostatic tests,
but shall be used during all running or performance tests. Substitute seals shall not
be used unless the vendor can establish that damage would occur if the contract
seals were used. The vendor shall submit evidence that any testing with substitute
seals shall not compromise expected seal performance in the field.
6.6 Hydrostatic tests shall be required for all pumps.
6.7 For hydrostatic tests, water and treatment shall be in accordance with API 610,
paragraph 4.3.2.3.
6.8 The pump running speed used in the test shall be the rated speed, within a tolerance
of ±3 percent.
6.9 Unless otherwise specified, the contract driver shall be used for shop testing. The
use of other driver shall require SABIC’s approval.
6.10 Acceptance of shop tests shall not constitute a waiver of requirements of a field test
run under specified operating conditions, nor does inspection relieve the vendor of
responsibility in any way.
6.11 Vertical pump rotor run-out, expressed as total indicator reading per meter of rotor
length, shall conform to the following:
7 Retest and Dismantling Inspection
Requirements in this section shall apply to all the pumps specified in this standard.
7.1 If it is necessary to dismantle a pump after the performance test for the sole purpose
of matching the impeller(s) to meet the tolerances on the differential head, no retest
shall be required, unless the reduction in impeller diameter exceeds 5 percent of the
original tested diameter. When no retest is required, two curves shall be shown on
the certified pump curve, one at the diameter of the impeller(s) at the performance
test, and the other with the final diameter of the impeller. After matching the
impeller(s), there shall be at least 5 percent margin remaining between the reduced
impeller(s) diameter and the minimum impeller(s) diameter.
7.2 If dismantling is necessary for another reason, for example to achieve an
improvement of efficiency, NPSH, or mechanical operation, the initial test will not be
acceptable. The final shop test shall not be run until after any modifications are
completed.
7.3 Dismantling of the pump shall not be required after the running test if performance
test conforms to the specified operating conditions and the pump does not show
excessive overheating of bearings, high vibration level, or cavitation noise.
8 Repairs
Requirements in this section shall apply to all the pumps specified in this standard.
8.1 The following repairs shall require prior SABIC approval, otherwise they will be
rejected:
a. Major weld repairs
b. Repairs to leaking pressure-containing parts
c. Straightening of shafts
d. Rectification of fits/tolerances/clearances by the application of metal coatings
or overlays
e. Repairs to rotating parts that result in deviation from the original drawings
f. Repairs necessitated by internal rubs for any reason
g. Repairs/alterations to bearings
h. Repairs/alterations to shaft sealing systems
8.2 Major repair welds in ferritic steel material shall be given stress relief heat treatment.
Repair welds shall be examined by liquid penetrant or magnetic particle examination.
9 API 610 Pumps
See SES G01-S06.
9.1 Inspection
9.1.1 Material Inspection
9.1.1.1 Pressure containing butt welded components for the following shall
be spot RT:
a. Components used in liquefied gas service, for example LNG
and LPG
b. When operating pressure is 2000 kPa (290 psi) and above
9.1.1.2 When the casing thickness exceeds 38 mm (1 1/2 in), or when the
minimum operating temperature is below -29 C, or higher than
270 C, pressure containing butt welded components shall be
subject to 100 percent RT or UT.
9.1.1.3 Casings, impellers, and shafts shall be MT or PT examined after
machining, to verify that they are free of defects. High energy
impellers, with rated speeds > 75 m/s, shall be fully radiographed.
9.1.1.4 Auxiliary connection welds to casing shall be MT or PT.
9.1.1.5 Castings and pressure containing parts shall be examined in
accordance with 5.3.7.
9.1.1.6 Unless otherwise specified, certificate of material compliance Type I
shall be provided for all pumps. If Type II and III certificates for
individual services are required, this will be specified in the purchase
specification/data sheets.
9.1.2 Balancing
9.1.2.1 Impellers, balancing drums, and other major rotating components
shall be dynamically balanced and shall meet the requirements of
API 610, paragraph 2.8.4.
9.1.2.2 Rotor balancing of between-bearing pumps shall be in accordance
with API 610 paragraph 5.2.4.2. Residual unbalanced check shall be
in accordance with API 610, Appendix J.
9.2 Mechanical Inspection
9.2.1 The hardness of a component, weld or heat affected zone shall be tested in
the following circumstances:
a. When a minimum hardness has been specified for the component or
portion of the component
b. When a difference in hardness between two surfaces of the same
material in sliding or rubbing contact has been specified
c. The hardness of a material has to be held below a certain value to
avoid embrittlement
9.2.2 Metal components shall be tested for hardness on an area not in contact with
adjacent or mating parts.
9.2.3 Heat treatment records shall be provided to SABIC for components subjected
to heat treatment for any of the following requirements:
a. To obtain required strength/properties as in the case of, for example,
shafts and casing
b. To obtain increased wear resistance/differential hardness for close
running parts
c. To relieve undesirable residual stresses in critical components, for
example impellers and shafts, developed during machining and
welding repairs
9.3 Testing
9.3.1 Hydrostatic Test
9.3.1.1 All pressure casing components shall be hydrostatically tested in
accordance with API 610, paragraph 4.3.2. A minimum hydrostatic
pressure of 975 kPa (150 psi) shall be used for all components to be
tested, including auxiliary equipment exposed to process fluids,
cooling passages and jackets for bearings, stuffing boxes and oil
coolers.
9.3.1.2 Hydrostatic test liquid shall include wetting agent to reduce surface
tension and shall be used for the conditions stated in API 610,
paragraph 4.3.2.5.
9.3.2 Performance Test
9.3.2.1 Performance test shall conform to API 610, paragraph 4.3.3.
9.3.2.2 Pump shall be run for at least one (1) hour at rated conditions.
Bearing temperature equilibrium shall be reached during the test
period. Maximum bearing temperatures shall comply with the
following:
9.3.3 NPSHR Test
9.3.3.1 NPSHR test shall be performed in accordance with the relevant HI
standard and API 610, paragraph 4.3.4.1.
9.3.3.2 NPSH test shall be performed when margin between the minimum
NPSH available and the expected NPSH required is less than 0.9 m
(3 ft) for the pumps with a capacity up to 1500 m3/h (6600 gpm). For
pumps with a capacity more than 1500 m3/h (6600 gpm), NPSH test
shall be performed when the margin is less than 1.6 m (5’3”).
9.3.3.3 No allowance shall be taken for the hydrocarbon correction factor
discussed in various pump literatures.
9.3.4 Vibration Test
Vibration measurement shall be in accordance with API 610, paragraph 2.8.3.
The data shall be recorded during the performance test. The data measurement
points shall be the same as the performance data points. The vibration level
shall not exceed the limits in API 610. Where feasible, vibration tests of vertical
pumps shall be carried out with the pump at the minimum submergence level.
10 ASME B73.1M, B73.2M, and ISO Pumps
See SES G01-S03 and G01-S05.
10.1 Inspection
10.1.1 Material Inspection
10.1.1.1 After welding or repairing pressure containing components, they
shall be MT or PT examined in accordance with 5.3.5 and 5.3.6.
10.1.1.2 Casing and impellers shall be MT or PT examined after machining,
to verify that they are free of defects.
10.1.1.3 Castings and pressure containing parts shall have VI examination
in accordance with 5.3.7.
10.1.1.4 Auxiliary connection welds to casing shall be MT or PT examined.
10.1.1.5 Unless otherwise specified, certificate of material compliance Type
I shall be provided for all pumps.
10.1.1.6 For ISO pumps, the vendor shall provide material inspection and
testing criteria for SABIC review.
10.1.2 Balancing
10.2 Testing
Impeller, shaft and other major rotating components shall be dynamically
balanced in accordance with ISO 1940. The balancing quality grade for
individual components shall be G4.5. If the ratio of maximum outside
diameter to the width at the periphery, including the shroud(s), is less than
6:1, a two plane spin balance shall be performed.
10.2.1 Hydrostatic Test
10.2.1.1 Pressure containing components shall be hydrostatically tested in
accordance with ASME B73.1M and B73.2M paragraphs 5.2.1, and
ISO standards as applicable. All auxiliary pressure containing parts, when supplied with the pump, shall be hydrostatically tested.
Minimum hydrostatic test pressure shall be 700 kPa (100 psi).
10.2.1.2 If the component to be tested shall operate at a temperature at
which the material strength is lower than that at room temperature,
the minimum hydrostatic test pressure at which testing is
performed shall be multiplied by a factor obtained by dividing the
allowable working stress for the material at room temperature by
that at the operating temperature. The stress value used shall
conform to those given in the applicable codes.
10.2.2 Performance Test
10.2.2.1 Performance test shall be required for the following conditions:
a. Pumps operating in parallel
b. Suction specific speed is above 215 (metric – m3/s, rpm,
NPSH-m) or 11,000 (US customary – gpm, rpm, NPSH-ft)
c. Normal operating point is less than 10 percent above
minimum continuous flow
d. When an NPSH test is required
e. When specified
10.2.2.2 The performance test, when specified, shall conform to Acceptance
Level ‘A’ requirements in the centrifugal pump test section of
HI 1.6. The test shall include a minimum of 7 points, including
minimum continuous stable flow, rated flow, best efficiency point
(BEP), and 110 percent of BEP. ISO 2858 and 5199 pumps shall
be tested in accordance with ISO 2548 or 3555 as applicable.
10.2.3 NPSHR Test
10.2.3.1 NPSHR tests shall be performed in accordance with HI 1.6.
10.2.3.2 NPSH test shall be performed when margin between the minimum
NPSH available and the expected NPSH required is less than
0.9 m (3 ft) for the pumps with a capacity up to 1500 m3/h,
(6600 gpm). For pumps with a capacity more than 1500 m3/h
(6600 gpm), NPSH test shall be performed when the margin is less
than 1.6 m (5’3”).
10.2.3.3 The NPSH-required curve on water shall be established for a
minimum of 4 points:
a. Minimum continuous stable flow
b. Midway between minimum and rated flow
c. Rated flow
d. 110 percent of rated flow
10.2.4 Vibration Test
Vibration measurement for ASME pumps shall be taken during performance
test when performance test is required, and shall be in accordance with
SES G01-S03 or G01-S05 as applicable. The data measurement points shall
be the same as the performance data points. The vibration limits in any plane
shall not exceed 4.0 mm/s (0.16 in/s) RMS velocity. ISO pumps shall
conform to the same vibration limits. Vibration limits stated in ISO 5199 shall
not be acceptable.
11 Manufacturer’s Standard, Sealless, and Firewater Pumps
See SES G01-S08 and G01-S09.
11.1 Inspection
11.1.1 Material Inspection
11.1.1.1 After welding or repairing pressure containing components, they
shall be MT or PT examined in accordance with 5.3.5 and 5.3.6.
11.1.1.2 Casing and impellers shall be MT or PT examined after machining,
to verify that they are free of defects.
11.1.1.3 Castings and pressure containing parts shall have VI examination
in accordance with 5.3.7.
11.1.1.4 Auxiliary connection welds to casing shall be MT or PT examined.
11.1.1.5 Unless otherwise specified, certificate of material compliance Type
I shall be provided for all pumps.
11.1.1.6 For manufacturer’s standard pumps, the vendor shall provide
material inspection and testing criteria for SABIC review and
approval.
11.1.2 Balancing
Impeller, shaft and other major rotating components shall be dynamically
11.2 Testing
balanced in accordance with ISO 1940. The balancing quality grade for
individual components shall be G4.5. If the ratio of maximum outside
diameter to the width at the periphery, including the shroud(s), is less than
6:1, a two plane spin balance shall be performed.
11.2.1 Hydrostatic Test
Pressure containing components shall be hydrostatically tested with water at
a minimum of 1.5 times the maximum allowable working pressure. The test
shall be maintained for sufficient period of time to permit complete
examination of parts under pressure. The test shall be considered
satisfactory when neither leakage nor seepage through the casing or casing
joint is observed for at least 10 minutes. Large castings may require a longer
testing period, which shall be agreed between the vendor and SABIC prior to the test. All auxiliary pressure containing parts, when supplied with the pump,
shall be hydrostatically tested. Minimum hydrostatic test pressure shall be
700 kPa (100 psi).
11.2.2 Performance Test
11.2.2.1 Non-witnessed performance test shall be required for the following
conditions:
a. Pumps operating in parallel
b. Suction specific speed is above 215 (metric – m3/s, rpm,
NPSH-m) or 11,000 (US customary – gpm, rpm, NPSH-ft)
c. Normal operating point is less than 10 percent above
minimum continuous flow
d. When NPSH test is required
e. Rated power exceeds 200 kW (150 hp)
f. When specified
11.2.2.2 The performance test shall conform to Acceptance Level ‘A’
requirements in the centrifugal pump test section of HI 1.6 for all
pumps. The test shall include minimum 7 points, including
minimum continuous stable flow, rated flow, BEP, and 110 percent
of BEP. Sealless pumps shall be tested in accordance with HI 5.1 –
5.6.
11.2.2.3 Pumps in firewater service shall conform to NFPA 20 performance
requirements.
11.2.3 Other Tests for Sealless Pumps
The following tests shall be carried out in accordance with HI 5.1 – 5.6:
11.2.3.1 Mechanical Integrity Test
11.2.3.2 Hermetic Integrity Test. The test shall be maintained for a minimum
of five minutes. Secondary containment pressure components shall
be hydrostatically tested in accordance with HI standards, or
pneumatically tested in accordance with ASME Section III, Div 1,
Subsection ND, ND-6112.
11.2.3.3 Winding Integrity Test, for canned motor pumps.
11.2.4 NPSHR Test
11.2.4.1 NPSHR test shall be performed in accordance with HI 5.1 – 5.6.
11.2.4.2 NPSH test shall be carried out when margin between the minimum
NPSH available and the expected NPSH required is less than
0.9 m (3 ft) for the pumps with a capacity up to 1500 m3/h
(6600 gpm). For pumps with a capacity more than 1500 m3/h
(6600 gpm), NPSH test shall be performed when the margin is less
than 1.6 m (5’3”).
11.2.4.3 The NPSH-required curve on water shall be established for a
minimum of 4 points:
a. Minimum continuous stable flow
b. Midway between minimum and rated flow
c. Rated flow
d. 110 percent of rated flow
11.2.5 Vibration Test
Vibration measurement shall be taken during performance test. The data
measurement points shall be the same as the performance data points. The
unfiltered vibration level shall be measured on the bearing housing for
conventional pumps and canned motor pumps, or on the frame for magnetic
drive pumps. Vibration limit in any plane shall not exceed 4 mm/s (0.16 in/s)
RMS velocity.
12 Inspector’s Checklist
12.1 Appendices A to C are arranged by equipment type. The inspection checklists shall
be used in conjunction with the inspector’s checklist appended to the referenced
standards.
12.2 Items marked ‘X’ in the ‘Inspection required’ column mean that the activity is
required.
12.3 Items marked ‘X’ in ‘Inspection record/report/document required’ column mean that in
addition to the inspection activity being carried out, a record/report/document giving
the values measured and their relationship to the range of normal accepted values
shall be provided.
12.4 Items marked ‘X’ in the ‘Inspection non-witnessed required’ column mean that SABIC
will not require notification of an impending inspection/testing event. However, SABIC
may attend a non-witnessed inspection/test.
12.5 Items marked ‘X’ in the ‘Inspection observed required’ or the ‘Inspection witnessed
required’ columns mean that SABIC shall be notified in advance of an impending
inspection/testing event.
12.6 Items marked ‘a’ are requirements for all pumps.
12.7 Items marked ‘b’ are additional requirements for pumps in critical services.
12.8 Items marked ‘c’ are additional requirements for multistage and large pumps in
special and critical services.
12.9 Items marked ‘d’ are inspection record/reports/documents to be reviewed in the
vendor’s/sub-vendor’s shop by SABIC.
API 610 Pumps
APPENDIX B – ASME B73.1M, B73.2M and ISO Pumps
APPENDIX C – Manufacturer’s Standard, Sealless and Firewater Pumps
