How to Maintain and Inspect Safety Valves?
To make the safety valve action sensitive, reliable, and good sealing performance, it must be in the operation process of boilers, pressure vessels, and pressure pipelines to strengthen the maintenance and inspection.
(1) You should often keep the safety valve clean, prevent the body spring and other greases from being dirt-filled or corroded and prevent the safety valve discharge pipe by oil or other foreign bodies blocked. We need to check whether the seal is intact, to prevent the hammer of the lever-type safety valve from loose or being moved and arbitrary twisting.
(2) When the safety valve is found to have signs of leakage, it should be replaced or repaired. It is forbidden to increase the load (such as over-tightening the regulating screw of the spring-type safety valve or hanging heavy objects on the lever of the lever-type safety valve) to eliminate the leakage. In order to prevent the valve disc and seat from being stuck by the dirt in the gas, causing the safety run not to open normally. The safety valve is for air, steam, or with viscous dirt but the discharge of other gases will not cause harm, it should be regularly carried out the discharge test.
(3) In order to maintain the safety valve sensitive and reliable, we should do a regular check at least once a year. The content of regular check includes dynamic check and disintegrate check commonly. The main content of the dynamic inspection is to check the opening pressure of the safety valve, the back seat pressure, the sealing degree, and the opening height under the rated discharge pressure, etc. Its requirements are the same as the debugging of safety valves. If the dynamic inspection is not qualified, or there is leakage and other abnormal conditions are found in operation, it should be a disintegrated inspection. After disassembly, we should check carefully whether all parts of the safety valve have cracks, scars, wear, corrosion, deformation, etc., and repair or replace according to the size of defects and damage degree, and finally assemble, and do a dynamic inspection.
Special equipment use unit should attach great importance to the malfunctions elimination of safety valves, repair and inspection (maintenance) work and related accident lesson warning and safety valve in pressure special equipment importance. Special equipment and the use of production units, especially the medium and small private individual enterprises should be earnestly studied. We carried out the special equipment safety supervision regulations. We need to strictly abide by the safety operating rules and regulations. In addition to the use of pressure on the kind of special equipment ontology for regular day-to-day maintenance and inspection. We need to hidden dangers, do timely rectification, eliminate hidden dangers, and truly implement the main responsibility of the enterprise, to ensure the safe operation of special equipment.
(1) You should often keep the safety valve clean, prevent the body spring and other greases from being dirt-filled or corroded and prevent the safety valve discharge pipe by oil or other foreign bodies blocked. We need to check whether the seal is intact, to prevent the hammer of the lever-type safety valve from loose or being moved and arbitrary twisting.
(2) When the safety valve is found to have signs of leakage, it should be replaced or repaired. It is forbidden to increase the load (such as over-tightening the regulating screw of the spring-type safety valve or hanging heavy objects on the lever of the lever-type safety valve) to eliminate the leakage. In order to prevent the valve disc and seat from being stuck by the dirt in the gas, causing the safety run not to open normally. The safety valve is for air, steam, or with viscous dirt but the discharge of other gases will not cause harm, it should be regularly carried out the discharge test.
(3) In order to maintain the safety valve sensitive and reliable, we should do a regular check at least once a year. The content of regular check includes dynamic check and disintegrate check commonly. The main content of the dynamic inspection is to check the opening pressure of the safety valve, the back seat pressure, the sealing degree, and the opening height under the rated discharge pressure, etc. Its requirements are the same as the debugging of safety valves. If the dynamic inspection is not qualified, or there is leakage and other abnormal conditions are found in operation, it should be a disintegrated inspection. After disassembly, we should check carefully whether all parts of the safety valve have cracks, scars, wear, corrosion, deformation, etc., and repair or replace according to the size of defects and damage degree, and finally assemble, and do a dynamic inspection.
Special equipment use unit should attach great importance to the malfunctions elimination of safety valves, repair and inspection (maintenance) work and related accident lesson warning and safety valve in pressure special equipment importance. Special equipment and the use of production units, especially the medium and small private individual enterprises should be earnestly studied. We carried out the special equipment safety supervision regulations. We need to strictly abide by the safety operating rules and regulations. In addition to the use of pressure on the kind of special equipment ontology for regular day-to-day maintenance and inspection. We need to hidden dangers, do timely rectification, eliminate hidden dangers, and truly implement the main responsibility of the enterprise, to ensure the safe operation of special equipment.
