What are the requirements for self-reliance type pneumatic control valve pipe pressure test?

What are the requirements for self-reliance type pneumatic control valve pipe pressure test? Answer: 1) Self-reliance type pneumatic control valve pressure testing before, should according to the design requirements and the related technical specification for testing system to conduct a comprehensive inspection, will not test with pipe valves, instruments, accessories, such as removed from the pipeline, temporary spool connected; Pipes all open change should be closed, unfavorable along with test equipment or high ( Low) Low pressure system and the ( High) System should be added between the blind plate isolation, dismantled after pressure test. 2) The valve should be opened in the pressure test system, the system should be set at the high point vent valve; Set low place self-reliance type pneumatic control valve. 3) Self-reliance type pneumatic control valve hydraulic test should not be at temperatures below the ambient temperature of 5 degrees, or relevant antifreezing measures should be taken, or to switch to air test, after testing qualified, should immediately the clean liquid emissions within the system. 4) When test should slow booster, at the same time observe each part of the test system, found the problem step-down to repair immediately. 5) After testing qualified, should fill in test record, and signed by the concerned personnel, as technical data archive.