Nuclear power station sealing performance test method, sealing performance test device and electronic device

Abstract

The invention is suitable for the technical field of nuclear power station special safety facilities, and provides a nuclear power station sealing performance test method, a nuclear power station sealing performance test device and an electronic device, and the method comprises the steps: obtaining the actual leakage rate of a target isolation valve; calculating the actual pressure difference of the target isolation valve; obtaining the overhaul penetration piece leakage rate, and the overhaul penetration piece leakage rate being the total leakage rate measured by all penetration pieces on thecontainment during the last overhaul period; calculating the absolute value of the difference between the overhaul penetration piece leakage rate and a preset leakage threshold value; according to the absolute value, a preset penetration piece pressure difference and the actual pressure difference, calculating to obtain a leakage rate standard of the target isolation valve; and obtaining a test result based on the actual leakage rate and the leakage rate standard. By means of the method, the sealing performance of the single containment mechanical penetration piece isolation valve can be tested, and unnecessary withdrawing of a unit is reduced.

Description

Technical field [0001] This application belongs to the technical field of special safety facilities for nuclear power plants, and in particular relates to a nuclear power plant tightness test method, a tightness test device, electronic equipment, and a computer-readable storage medium. Background technique [0002] The containment is the third physical barrier for nuclear power plants to prevent the escape of radioactive materials. The operating technical specifications stipulate strict restrictions on the tightness of the containment under various operating conditions to ensure that the containment can contain radioactive materials in the event of a loss of water accident. [0003] In the "Containment Mechanical Penetration Isolation Valve Tightness Test Evaluation", it is stipulated that the penetration test results shall be compared with the acceptance standard. If the total leakage rate of all mechanical penetration isolation valves is less than the acceptance standard (8.414Nm...

AI Technical Summary

Problems solved by technology

However, in the operation of a nuclear power plant, if a single penetration of the containment vessel leaks, the safety of the unit cannot be evaluated due to the lack of safety criteria for a single containment penetration.

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