核电厂严重事故下卸压对氢气产生的影响分析  

Effect of Depressurization on Hydrogen Generation During Severe Accident in PWR Nuclear Power Plant

作　　者：陶俊[1] 李京喜[1] 佟立丽[1] 曹学武[1] 

机构地区：[1]上海交通大学机械与动力工程学院,上海200240

出　　处：《原子能科学技术》2011年第1期40-43,共4页Atomic Energy Science and Technology

基　　金：国家重点基础研究发展计划资助项目(2009CB724301)

摘　　要：研究了1 000MWe压水堆核电厂在典型的高压严重事故序列下卸压对氢气产生的影响。分析结果表明,开启1列、2列和3列卸压阀进行一回路卸压均会在堆芯熔化进程的3个阶段导致氢气产生率的明显增大:1)堆芯温度1 500～2 100K;2)堆芯温度2 500～2 800K;3)从形成由硬壳包容的熔融池(2 800K)到熔融物向压力容器下封头下落。开启卸压阀的列数越多,氢气产生率的增大越明显。The effect of depressurization on hydrogen generation during a typical high pressure severe accident sequence in a 1 000 MWe pressurized water reactor（PWR） nuclear power plant was analyzed.Analyses results indicate that the hydrogen generation rate is obviously increased by the reactor coolant system depressurization of opening one,two or three power operated relief valves（PORVs） at three core damage states.The first is peak core temperature from 1 500 K to 2 100 K.The second is peak core temperature from 2 500 K to 2 800 K.The third is from formation of molten pool supported by crust to slumping of molten materials into reactor pressure vessel lower head.The more PORVs are opened the more increment of hydrogen generation rate.

关 键 词：压水堆核电厂 全厂断电事故 卸压 氢气产生率 

分 类 号：TL364.4[核科学技术—核技术及应用]