It is of great significance to use the pressure vessel, boiler and other products safely without hydrostatic test. No direct operation after hydrostatic test of boiler will not only damage the boiler, but also threaten people's life safety. The following is Zalman, the steps and analysis of hydrostatic test of boiler.
Boiler pressure pipes, pipe fittings and valves have been completed according to the drawings, specifications and design requirements. Installation and connection of temporary pipes and exhaust pipes for boiler pressure test and internal inspection of water pressure test pump and steam drum have been completed to understand the connection mode of boiler vessels, water pressure test and water pressure test joints.
The pressure gauge used for pressure test has been verified. During weekly verification, the full range value of the pressure gauge shall be 1.5-2 times of the tested pressure, and its accuracy shall not be lower than level 1.5. Install temporary pipeline and steam collector in two places before pressure test pump. The civil engineering plant has been closed, the boiler plant has been heated up, the ambient temperature has been higher than 5 ℃, the boiler plinth has been grouted, the strength has reached 70% of the design strength, and the alloy steel pipe spectrum analysis data is complete.
The pipes that need to be heat treated are heat treated, the data before the hydrostatic test are tested, and the Municipal Bureau of quality and technical supervision is informed to go to the site for testing and participate in the hydrostatic test. Therefore, the boiler water pressure detection is a strict process, which is essential.
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