1985年前苏联核潜艇事故及对我国潜在辐射影响评价北大核心CSCD

1985年8月10日,前苏联E-2级核潜艇K-431号在换料过程中发生反应堆临界爆炸燃烧事故。事故导致10名工作人员死亡。本文基于事故当时的气象资料以及对我国不利的气象等两种条件,利用HYSPLIT程序,就此次事故源项对我国的潜在辐射影响进行了评价,结果显示两种气象条件下事故对我国境内产生的最大个人有效剂量均为10^(-5) mSv量级。虽然此次事故对我国的辐射影响较小,但是类似的威胁需要引起重视,相关的监测研判体系需要加强。

The nuclear submarine accident of former Soviet Union in 1985 and the evaluation of potential radiation impact on China

On August 10, 1985, K-431, the former Soviet E-2 class nuclear submarine, suffered a reactor criticality, explosion and combustion accident during refueling. The accident resulted in the death of 10 crew members. Based on the meteorological data at the time of the accident, the unfavorable meteorological conditions for China, and the HYSPLIT program, this paper evaluated the potential radiation impact of the accident source terms on China. The results show that the maximum effective dose for individuals in China is of the order of 10^-5 mSv under the two meteorological conditions. Although the radiation impact of the accident is small, similar threats need to be paid attention, and relevant monitoring and evaluation system needs to be strengthened.