A method and system for calculating and evaluating the containment leakage rate of a nuclear power plant

A technology of containment and leakage rate, applied in the field of nuclear power plants, can solve the problems of low reliability, inability to judge rationality, and low accuracy, and achieve the effect of improving reliability
CN108876175BActive Publication Date: 2021-12-03CHINA NUCLEAR POWER DESIGN COMPANY +3
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA NUCLEAR POWER DESIGN COMPANY
Publication Date
2021-12-03

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Abstract

The invention discloses a method for calculating and evaluating the containment leakage rate of a nuclear power plant. category assessment uncertainty; the category A assessment uncertainty and the category B assessment uncertainty are synthesized into the containment leakage rate uncertainty, so as to Compute for evaluation. The invention also discloses a calculation and evaluation system for the containment leakage rate of the nuclear power plant. The invention can improve the reliability and accuracy of evaluation.
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Description

technical field

[0001] The invention relates to the technical field of nuclear power plants, in particular to a method and system for calculating and evaluating the containment leakage rate of a nuclear power plant. Background technique

[0002] The mass conservation method is commonly used in the world to calculate the containment leakage rate. According to the ideal gas state equation, the standard volume of air (the volume at 0, โ„ƒ 1.01325ร—105Pa) is equivalent to the air mass, and several standard volume changes DV in one day are used. H Linear fitting with time, the slope of the line is the leakage rate Q of the day ld . Containment leak rate Q ld Characterized by its best estimated value and uncertainty, the uncertainty of containment leak rate is an important index to measure the reliability of leak rate calculation results.

[0003] In statistics, the uncertainty of containment leakage rate is composed of Type A assessment uncertainty and Type B assessment uncertain...

Claims

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