Safety Analysis of Tritium Recycling System

Safety of a tritium recycling system is analysed according to the structure of the system.The method of accident tree is used to analyse the leakage probability of the system.The result show that the leakage probability of the system failure is 1.1×10-3 and the leakage probability of human fault is 7.2×10-3,which is are in safe limit.But the leakage probability of human fault is higher than system failure.The MCA will occur because of tritium waste emission cell breakage or misplay,in this case,all tritium in the system will leak,which is about 5.84 TBq.The maximal effective individual dose is 1.24×10-3 mSv,the maximal effective dose of the collectivity is 15.33 Person·mSv.

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