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蒸汽发生器管子漏泄是液体冷却反应堆的常见事故之一,在核电站设计中必须分析蒸汽发生器管子漏泄的放射性后果。本文运用一、二回路的简化流程建立的模型,分析了泄漏率、排污率、放射性物质的蒸汽载带系数以及水处理净化残留系数对有泄漏蒸汽发生器内炉水平衡活性的影响。分析表明,除泄漏率外,其余系数均使炉水在事故后一天内达到平衡活性.因此,进行安全分析时只需计算平衡活性,并按此分析事故后果。
Steam generator tube leakage is one of the common accidents of liquid-cooled reactors. It is necessary to analyze the radioactive consequences of steam generator tube leakage in the design of a nuclear power plant. In this paper, the model established by the simplified process of primary and secondary circuits was used to analyze the influence of leakage rate, discharge rate, steam carrier coefficient of radioactive material and residual coefficient of water treatment on the water balance activity in boiler with leaking steam generator. The analysis shows that, except for the leakage rate, the remaining coefficients all bring about the equilibrium activity of the boiler water within one day after the accident, therefore, only the equilibrium activity needs to be calculated in the safety analysis, and the consequence of the accident can be analyzed accordingly.