简化源项计算方法

A SIMPLIFIED APPROACH FOR SOURCE TERM CALCULATION

利用程序包STCP估算核电厂在发生严重事故情况下释放到环境的放射性源项需要耗费大量计算机时间和费用。所以,对所有感兴趣的事故情景完成源项程序包的计算实际上是不可能的。为此,发展了一个简化源项计算方法。它的基本思想如下:首先利用STCP计算几个选择的序列,然后根据放射性释放和事故进程的特点处理和分析由STCP计算得到的结果,得出一些特定参数,其它事故序列的源项能够通过这些参数的重新组合得到。

The estimation of radioactive source term released to environment under severe accident for a nu-clear power plant using code package STCP consunes a large amount of computer time and expense. It isactually not practical to perform the source term code package calculations for all accident senarios ofinterest. For this reason a simplified calculation method is developed. Its essential idea is as follows: cal-culate sveral selected sequences using STCP, then treat and analyze the results according to the chacteris-tics of radioactive release and accident progress. Some special parameters can be deduced. The sourceterms for other accident sequences can be estimated by combination of there parameters.