The inclusion failure of the reactor compartment is an important technical condition forjudging the upgrade of emergency state and an important technical basis for emergency decision.In this paper,a method using compartment radiation level as the basis for judgment of the inclusion failure of reactor compartment is proposed.The monitorable quantities(131I nuclide activity concentration and γ dose rate of compartment)used to judge inclusion failure are determined,the transfer relationship between compartment radiation level and reactor leakage rate is established,and the calculation method of criterion value is given.
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