Risk Analysis and Optimization of the Primary Circuit Related Vessel Gas Sampling Detection Method for Nuclear Power Plant
In the design of the nuclear sampling system of the M310 unit,the sampling and detection method of the gas in the primary relevant vessel has some risks,such as accidental inhalation of radioactive gas by personnel,large deviation of measurement results,explosion of hydrogen and oxygen mixture,and alarm of the chimney radiation monitoring instrument.Combined with the existing design and installation of the nuclear sampling system,this paper optimizes the gas sampling and detection method of primary related vessels by adding sampling and exhaust paths of hydrogen-containing radioactive gases,selecting reasonable sampling and exhaust paths according to different working conditions of the vessels,and designing and producing portable hydrogen and oxygen measuring devices.
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