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完全丧失蒸发器给水瞬变合并ECC系统及(或)其他系统失效,将导致堆芯严重损坏。作者利用核电厂系统分析程序RELAP5/MOD1对300MW秦山核电厂此类严重瞬变作了研究,并研究了操作员简单干预的作用。该电厂的若干设计特征,如主系统装量及蒸汽发生器二次侧装量皆较大,ECCS注射能力强、稳压器PORV泄压能力相对较大等,对事故的进程均有一定的影响。
The complete loss of evaporator feedwater transient combined ECC system and / or other system failure will result in serious core damage. The author uses the RELAP5 / MOD1 system analysis program of the nuclear power plant to study such serious transients of the 300MW Qinshan Nuclear Power Plant and studies the role of operator’s simple intervention. Some of the design features of the plant, such as the main system installed capacity and the secondary side of the steam generator are larger, ECCS injection capacity, pressure relief PORV relatively large capacity, the process of the accident has a certain influences.