API Specification 6D Quality Specification Level (QSL)
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The summary quality specification level (QSL) of valve with supplementary testing and documents requirements.
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API Specification 6D Quality Specification Level (QSL)
- 2. QUALITY SPECIFICATION LEVEL API SPECIFICATION 6D SPECIFICATION FOR PIPELINE AND PIPING VALVES ADDITIONAL TEST AND DOCUMENTS REQUIREMENT FOR QUALITY SPECIFICATION LEVEL (QSL): • NON-DESRUCTIVE EVALUATION (NDE) REQUIREMENT • PRESSURE TEST REQUIREMENT • DOCUMENTATION REQUIREMENT Additional supplementary non-destructive test and pressure test perform by Manufacturer on-site, off-site and/or out- sourced. These supplementary non-destructive test and pressure test according to API Specification 6D in annex G, H, I and J.
- 3. QUALITY SPECIFICATION LEVEL NON-DESRUCTIVE EVALUATION (NDE) REQUIREMENT PARTS QSL 3 QSL 4 CAST FORGE PLATE CAST FORGE PLATE Body; Closures; End-Connections; Bonnet; Cover; Gland-Housing VT1 RT1 UT4 VT2 UT2 VT2 UT2 VT1 RT1 UT1 MT1/PT1 VT2 UT2 MT1/PT1 VT2 UT2 MT1/PT1 Welding Ends VT1 RT3/UT4 MT1/PT1 VT2 UT2 MT1/PT1 VT2 UT2 MT1/PT1 VT1 RT3/UT4 MT1/PT1 VT2 UT2 MT1/PT1 VT2 UT2 MT1/PT1 Stem; Shaft NONE VT2 MT1/PT1 NONE NONE VT2 UT2 MT1/PT1 NONE Trunnion; Bearing Plates VT1 VT2 VT2 VT1 UT1 MT1/PT1 VT2 UT2 MT1/PT1 VT2 UT2 MT1/PT1 Bolting NONE VT2 NONE NONE VT2 MT1/PT1 NONE Ball; Gate VT1 VT2 VT3 VT1 MT1/PT1 VT2 MT1/PT1 VT2 MT1/PT1
- 4. QUALITY SPECIFICATION LEVEL NON-DESRUCTIVE EVALUATION (NDE) REQUIREMENT-CONT’D PARTS QSL 3 QSL 4 CAST FORGE PLATE CAST FORGE PLATE Ball; Gate VT1 VT2 VT3 VT1 MT1/PT1 VT2 MT1/PT1 VT2 MT1/PT1 Plug; Clapper disc VT1 VT2 VT2 VT1 RT3/UT4 MT1/PT1 VT2 MT1/PT1 VT2 MT1/PT1 Clapper Disc Arm VT1 VT2 VT2 VT1 RT3/UT4 MT1/PT1 VT2 MT1/PT1 VT2 MT1/PT1 Seat Rings VT1 VT2 VT2 VT1 RT3/UT4 MT1/PT1 VT2 UT2 MT1/PT1 VT2 UT2 MT1/PT1 Corrosion-Resistant Overlay VT3 PT1 VT3 UT3 PT1 Seals Gaskets VT4 Seat Springs VT4
- 5. QUALITY SPECIFICATION LEVEL NON-DESRUCTIVE EVALUATION (NDE) REQUIREMENT-CONT’D PARTS QSL 3 QSL 4 CAST FORGE PLATE CAST FORGE PLATE Pressure-Containing Welds VT3 RT2/UT3 MT1/PT1 Reinforcement; Stiffening Welds VT3 Fillet; Attachment Welds VT3 MT1/PT1 Pipe Pup Pieces VT3 RT2 MT1/PT1 Plating VT4 Hard Facing VT4 PT1 Sealing Surfaces MT2/PT2 QSL 1 and QSL 2 without any additional testing required.
- 6. QUALITY SPECIFICATION LEVEL METHODE OF NON-DESRUCTIVE EVALUATION (NDE) REQUIREMENT EXAMINATION NDE EXTENT METHOD ACCEPTANCE RT1 CASTING CRITICAL AREA ASME SEC. V ART. 2 ASME SEC. VIII DIV. 1 APP. 7 RT2 WELDMENT 100% ASME SEC. V ART. 2 ASME SEC. VIII DIV. 1 RT3 CASTING 100% ASME SEC. V ART. 2 ASME SEC VIII, DIV. 1 APP. 7 UT1 CASTING REMAINING AREA OF RT1 ASME SEC. V ART. 5 ASTM A609 TABLE 2 QUALITY LEVEL 2 UT2 FORGING; PLATE ALL SURFACE ASME SEC. V ART. 5 ASME SEC. VIII DIV. 1 UT3 WELDMENT 100% ASME SEC. V ART. 4 ASME SEC. VIII DIV. 1 APP. 12 OVERLAY 100% ASME SEC. V ART. 4 ASTM A578A LEVEL C. UT4 CASTING 100% ASME SEC. V ART. 5 ASTM A609 TABLE 2 QUALITY LEVEL 1 MT1 EXTERNAL; INTERNAL SURFACE 100% ASME SEC. V ART. 7 ASME SEC. VIII DIV. 1 APP. 7 MT2 SEALING SURFACE 100% ASME SEC. V ART. 7 ASME SEC. VIII DIV. 1 APP. 6 PT1 EXTERNAL; INTERNAL SURFACE 100% ASME B16.34 APP. III ASME B16.34 APP. III PT2 SEALING SURFACE 100% ASME SEC. V ART. 6 ASME SEC. VIII DIV. 1 APP. 8 VT1 CASTING 100% MSS SP-55 API SPEC 6D ARTICLE 8.6 VT2 FORGING; PLATE 100% ASME SEC. VIII DIV. 1 UF-45; UF-46 ASME SEC. VIII DIV. 1 UF-45; UF-46 VT3 WELDMENT 100% ASME SEC. V ART. 9 API SPEC 6D TABLE J.2 VT4 OTHERS 100% APPLICABLE STANDARD APPLICABLE STANDARD
- 7. QUALITY SPECIFICATION LEVEL PRESSURE TESTING REQUIREMENT TEST TYPE QUALITY SPECIFICATION LEVEL (QSL) QSL 1 QSL 2 QSL 3 QSL 4 High-pressure hydrostatic shell test @ 1.5 times the rated pressure per 9.3 • Test per 9.3 • Test per 9.3 • 2 tests required. • After 1st test reduce pressure to zero and repeat test • 3 tests are required. • Reduce pressure to zero between each test. • Tests 1 and 3 shall have a test duration as specified in Table 5. • Test 2 shall have an extended duration of four times that stated in Table 5. High-pressure hydrostatic seat test @ 1.1 times the rated pressure per 9.4 • Test per 9.4 • Test per 9.4 • 2 tests each seat required. • After 1st test reduce pressure to zero and cycle fully open and fully closed and repeat test. • 3 tests each seat is required. • Reduce pressure to zero • and cycle fully open and fully closed after each test • Tests 1 and 3 shall have test duration as specified in Table 6. Test 2 shall have an extended duration of four times that stated in Table 6.
- 8. QUALITY SPECIFICATION LEVEL PRESSURE TESTING REQUIREMENT-CONT’D TEST TYPE QUALITY SPECIFICATION LEVEL (QSL) QSL 1 QSL 2 QSL 3 QSL 4 Low-pressure pneumatic seat test @ 80 psi to 100 psi per H.3.3 Type II NONE • Test each seat per H.3.3 Type II • 2 tests each seat required. • Reduce pressure to zero and cycle valve fully open and fully closed and repeat test of each seat. • 3 tests each seat is required. • Reduce pressure to zero • and cycle fully open and fully closed after each test. • Tests 1 and 3 shall have test • duration as specified in Table 6. • Test 2 shall have an extended duration of four times that stated in Table 6. High-pressure pneumatic shell test @ 1.1 times the rated pressure per H.4.2 NONE NONE • 2 tests required. • After 1st test reduce pressure to zero and repeat test. • 3 tests are required. • Reduce pressure to zero between each test. • Tests 1 and 3 shall have test • duration as specified in Table H.1. • Test 2 shall have an extended duration of four times that stated in Table H.1.
- 9. QUALITY SPECIFICATION LEVEL PRESSURE TESTING REQUIREMENT-CONT’D TEST TYPE QUALITY SPECIFICATION LEVEL (QSL) QSL 1 QSL 2 QSL 3 QSL 4 High-pressure pneumatic seat test @ 1.1 times the rated pressure per H.4.3 NONE NONE • 2 tests each seat required. • After 1st test reduce pressure to zero and cycle fully open and fully closed and repeat test. • 3 tests each seat is required. • Reduce pressure to zero • and cycle fully open and fully closed after each test. • Tests 1 and 3 shall have test • duration as specified in • Table H.1. • Test 2 shall have an extended duration of four times that stated in Table H.1.
- 10. QUALITY SPECIFICATION LEVEL DOCUMENTS REQUIREMENT DOCUMENTS REQUIRED QSL 1 QSL 2 QSL 3 QSL 4 Certificate of Conformance to this specification YES YES YES YES Hardness test report on pressure-controlling parts NONE NONE YES YES Hardness test report on pressure-containing parts NONE NONE YES YES Pressure test report (including pressure, test duration, test medium, and acceptance criteria) including copy of chart recorder used on pressure test NONE YES YES YES Calibration certificates on pressure test equipment used (e.g. pressure gauges, transducers, and chart recorders) NONE NONE YES YES Heat-treatment records including times and temperatures, e.g. charts NONE NONE YES YES Material test reports on all pressure-containing and pressure-controlling parts NONE YES YES YES For sour service valves, certificate of conformance to ANSI/NACE MR0175/ISO 15156 NONE YES YES YES General arrangements drawings NONE YES YES YES NDE records NONE NONE YES YES Cross-sectional assembly drawings with parts list and materials list NONE NONE YES YES Installation, operation, and maintenance instructions/manuals NONE YES YES YES