13616266016
standard specifications :
API RP 170-2009 Recommended Practice for Subsea High Integrity Pressure Protection System (HIPPS)API SPEC 6A-2011 Specification for Wellhead and ChristmasTree Equipment (Edition 19)IEC 61508-1997 Functional Safety of Electrical / Electronic / Programmable Electronic Safety-related SystemsIEC 61511-2003 Functional Safety Instrumemeu bystems or une rrocess Industry Sector 『GB/T 21109-2007
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