Pipeline pressure test requirements for Self-actuated control valve

Pipeline pressure test requirements for Self-actuated control valve

Pipeline pressure test requirements for Self-actuated control valve

1) Before the pressure test of Self-actuated control valve, the test system shall be comprehensively inspected according to the design requirements and relevant technical specifications, and the valves, instruments and accessories that are not suitable to be tested with the pipeline shall be removed from the pipeline, and the temporary short pipe shall be installed and connected; All opening and changing in the pipeline shall be closed, and blind plates shall be added between the equipment that should not be tested together or the high (low) pressure system and the low (high) system, which shall be removed in time after pressure test.

2) The valve in the pressure test system shall be opened, and the vent valve shall be set at the highest point of the system; Self operated regulating valve is set at the lowest point.

3) The hydrostatic test of Self-actuated control valve should not be carried out at an ambient temperature lower than 5 ℃, otherwise corresponding anti freezing measures should be taken, or pneumatic test should be used. After the pressure test is qualified, the liquid in the system should be discharged immediately.

4) During the test, the pressure shall be increased slowly, and the conditions of all parts of the pressure test system shall be observed. If any problem is found, the pressure shall be reduced immediately for repair.

5) After the pressure test is qualified, the test and inspection records shall be filled in and signed by relevant personnel, which shall be archived as technical data.