This standard specifies requirements for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems for the petroleum and natural gas industries.
This standard is applicable to ball, check, gate and plug valves for application in pipeline system meeting the requirements of GB/T 24259 Petroleum and Natural Gas Industries - Pipeline Transportation Systems for the petroleum and natural gas industries.
This standard is not applicable to subsea pipeline valve. This standard is not applicable to valves for pressure ratings exceeding PN 420 (Class 2500).
Annex A provides the order guide which is contibuted for the purchaser to determine the valves type and special requirements for the valves.
2 Normative References
The following documents are indispensable for the application of this standard.For dated references, only the edition cited applies. For undated references, the latest edition (including all amendments, corrigenda and records of maintenance bodies) of the referenced documents applies.
GB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method (GB/T 229 – 2007, ISO 148-1:2006, MOD)
GB/T 1048 Pipework Components--Definition and Selection of PN (GB/T 1048 - 2005, ISO/ CD 7268:1996, NEQ)
GB 3101 General Principles Concerning Quantities, Units and Symbols (GB 3101 - 1992, ISO 31:1992, IDT)
GB/T 7307 Pipe Threads with 55 Degree Thread Angle where Pressure-tight Joints are Made on the Threads (GB/T 7307 – 2001, eqv ISO 228-1:1994)
GB/T 9445 Non-destructive Testing - Qualification and Certification of Personnel (GB/T 9445-2008, ISO 9712:2005, IDT)
GB/T 19869.1 Welding Procedure Qualification Test for Steels, Nickel and Nickel Alloys (GB/T 19869.1- 2005, ISO 15614-1:2004, IDT)
GB/T 20972 (all parts) Petroleum and Natural Gas Industries - Material for Use in H2S-Containing Environments in Oil and Gas Production [GB/T 20972, ISO 15156: 2003 (all parts), MOD]
GB/T 24259 Petroleum and Natural Gas Industries - Pipeline Transportation Systems (GB/T 24259-2009, ISO 13623:2000, MOD)
GB/T 26952-2011 Non-destructive Testing of Welds - Magnetic Particle Testing of Welds - Acceptance Levels (ISO 23278:2006, MDD)
GB/T 26953-2011 Non-destructive Testing of Welds - Penetrant Testing of Welds - Acceptance Levels (ISO 23277:2006, MOD)
SY/T 6960 Testing of Valves - Fire Type-Testing Requirements
ISO 9606-1 Approval Testing of Welders - Fusion Welding - Part l: Steels
ISO 10497 Testing of Valves Fire Type--Testing Requirements
Foreword I 1 Scope 2 Normative References 3 Conformance 3.1 Units of Measurement 3.2 Rounding 3.3 Compliance to Standard 3.4 Process to be Verified 4 Terms and Definitions 5 Symbols and Abbreviated Term 5.1 Symbols 6 Valve Types and Configurations 6.1 Valve Types 6.2 Valve Configurations 7 Design 7.1 Design Standards and Calculations 7.2 Pressure and Temperature Rating 7.3 Sizes 7.4 Face-to-Face and End-to-End Dimensions 7.5 Valve Operation 7.6 Pigging 7.7 Valve Ends 7.8 Pressure Relief 7.9 Bypasses, Drains and Vents 7.10 Injection Points 7.11 Drain, Vent and Sealant Lines 8 Materials 8.1 Material Specification 8.2 Service Compatibility 8.3 Forgings 8.4 Composition Limits 8.5 Impact Toughness Test Requirements 8.6 Bolting 8.7 Sour Service 8.8 Vent and Drain Connections 8.9 Heat Treatment Qualifications 9 Welding 9.1 Qualifications 9.2 Impact Test 9.3 Hardness test 9.4 Repair Welding 10 Quality Control 10.1 NDE Requirements 10.2 Measuring and Test Equipment 10.3 Qualification of Inspection and Test Personnel 10.4 NDE of Repairs 10.5 NDE of Welding End 10.6 Visual Inspection of Castings 11 Pressure Test 11.1 General 11.2 Stem Backseat Test 11.3 Hydrostatic Shell Test 11.4 Hydrostatic Seat Test 11.5 Testing of Drain, Vent and Sealant Injection Lines 11.6 Draining 12 Coating 13 Marking 14 Preparation for Shipment 15 Documentation Annex A (Informative) Purchasing Guidelines Annex B (Normative) Requirements for Non-destructive Examination Annex C (Normative) Supplementary Test Requirements Annex D (Informative) Supplementary Documentation Requirements Annex E (Informative) Recommended Practice of Heat Treatment Equipment Annex F (Informative) Hydrostatic Shell Extension Testing Requirements and Record Keeping Period for Valves in Piping System within Judicial Jurisdiction Annex G (Informative) Quality Specification Level of Pipeline Valves References
