Requirements for Qualification and Capability of Manufacturers
Jun 10, 2023
In the process of high-pressure underwater valves being made in China, clear requirements were put forward for the qualifications and capabilities of valve manufacturers, and an expert group was invited to the valve manufacturers for on-site inspection and review.
(1) Requirements for qualification
Manufacturers of subsea valves should generally have ISO 9001, API 6DSS, API 17D, API 6A, API 6D and other relevant certificates.
(2) Quality systems
In order to ensure the quality of high-pressure subsea valves, the quality system of subsea valve manufacturers should meet the ISO9001 2008 edition "Requirements for Quality Management Systems", API Q1 9th edition "Quality Management System Specifications for Manufacturing Organizations in the Oil and Gas Industry", and TSG Z0004 "Basic Requirements for the Quality Assurance Systems of Special Equipment Manufacture, Installation, Alteration and Maintenance", 97/23/EC "Requirements for Pressure Equipment" and relevant international and domestic regulations.
(3) Ability to quality control
Manufacturers of underwater valves should have inspection and inspection capabilities such as radiographic flaw detection, coloring flaw detection, magnetic particle flaw detection, ultrasonic flaw detection, spectral analysis, material identification (PMI), metallographic structure testing, and various mechanical performance tests as well as independent quality inspection capabilities for purchased parts, including the ability to test the sealing performance of purchased sealing materials, the ability to analyze and review the material composition of purchased steels, to test tensile, impact, and hardness tests for purchased steels, and the non-destructive testing of purchased manufactured parts.
(4) Ability to design
Subsea valve manufacturers should have the following design capabilities:
① Independent underwater valve development and design capabilities, including valve sealing pressure calculation, torque and operating force calculation, strength design and calculation for valve components, CV value analysis, valve body opening reinforcement calculation, and good reliability sealing mechanism design
② Three-dimensional modeling and finite element analysis and verification capabilities
③ Selection and design capabilities for Subsea valve components, including the selection and design capabilities of valve drive mechanisms, metal seals, O-rings, springs, bearings, valve stem packings, PTFE-plated bolts and nuts
④ Material selection and design capabilities for different components of underwater valves
(5) Ability to manufacturing
Manufacturers of underwater valves should have the welding capacity and welding equipment of Incocel 625 alloy on the wet surface of the valve channel, the machining capacity of large valve parts and corresponding equipment such as turning, milling, grinding, etc., and TCC supersonic spraying process and spraying equipment, porosity testing equipment and testing capabilities after sphere spraying, sphere and valve seat grinding equipment and grinding capabilities, three-coordinate sphere roundness testing capabilities and testing equipment.
(6) Ability for testing
Manufacturers of underwater valves should have valve FAT testing capabilities and equipment, including electrical continuity testing capabilities and equipment, hydraulic shell testing capabilities and equipment, hydraulic valve seat sealing testing capabilities and equipment, valve operating torque testing capabilities and equipment, high-pressure Gas shell sealing test capability and equipment, low-pressure gas sealing test capability and equipment, high-pressure gas sealing test capability and equipment, valve chamber self-relieving pressure test capability and equipment, upper seal air pressure test capability and equipment, high-pressure chamber test capability and equipment, PR2 testing capabilities and equipment, valve life testing capabilities and equipment.
(1) Requirements for qualification
Manufacturers of subsea valves should generally have ISO 9001, API 6DSS, API 17D, API 6A, API 6D and other relevant certificates.
(2) Quality systems
In order to ensure the quality of high-pressure subsea valves, the quality system of subsea valve manufacturers should meet the ISO9001 2008 edition "Requirements for Quality Management Systems", API Q1 9th edition "Quality Management System Specifications for Manufacturing Organizations in the Oil and Gas Industry", and TSG Z0004 "Basic Requirements for the Quality Assurance Systems of Special Equipment Manufacture, Installation, Alteration and Maintenance", 97/23/EC "Requirements for Pressure Equipment" and relevant international and domestic regulations.
(3) Ability to quality control
Manufacturers of underwater valves should have inspection and inspection capabilities such as radiographic flaw detection, coloring flaw detection, magnetic particle flaw detection, ultrasonic flaw detection, spectral analysis, material identification (PMI), metallographic structure testing, and various mechanical performance tests as well as independent quality inspection capabilities for purchased parts, including the ability to test the sealing performance of purchased sealing materials, the ability to analyze and review the material composition of purchased steels, to test tensile, impact, and hardness tests for purchased steels, and the non-destructive testing of purchased manufactured parts.
(4) Ability to design
Subsea valve manufacturers should have the following design capabilities:
① Independent underwater valve development and design capabilities, including valve sealing pressure calculation, torque and operating force calculation, strength design and calculation for valve components, CV value analysis, valve body opening reinforcement calculation, and good reliability sealing mechanism design
② Three-dimensional modeling and finite element analysis and verification capabilities
③ Selection and design capabilities for Subsea valve components, including the selection and design capabilities of valve drive mechanisms, metal seals, O-rings, springs, bearings, valve stem packings, PTFE-plated bolts and nuts
④ Material selection and design capabilities for different components of underwater valves
(5) Ability to manufacturing
Manufacturers of underwater valves should have the welding capacity and welding equipment of Incocel 625 alloy on the wet surface of the valve channel, the machining capacity of large valve parts and corresponding equipment such as turning, milling, grinding, etc., and TCC supersonic spraying process and spraying equipment, porosity testing equipment and testing capabilities after sphere spraying, sphere and valve seat grinding equipment and grinding capabilities, three-coordinate sphere roundness testing capabilities and testing equipment.
(6) Ability for testing
Manufacturers of underwater valves should have valve FAT testing capabilities and equipment, including electrical continuity testing capabilities and equipment, hydraulic shell testing capabilities and equipment, hydraulic valve seat sealing testing capabilities and equipment, valve operating torque testing capabilities and equipment, high-pressure Gas shell sealing test capability and equipment, low-pressure gas sealing test capability and equipment, high-pressure gas sealing test capability and equipment, valve chamber self-relieving pressure test capability and equipment, upper seal air pressure test capability and equipment, high-pressure chamber test capability and equipment, PR2 testing capabilities and equipment, valve life testing capabilities and equipment.
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