The on-line calculation of hazardous chemicals is the key to the identification of major hazard sources in process units.The accuracy of the calculation results will affect the identification of major hazard sources,and then affect the safety management methods and management measures that should be taken for them.There is no uniform formula and method for the calculation of the on-line amount of hazardous chemicals in the device,which needs to be calculated according to the specific conditions of the device.The focus of on-line calculation of hazardous chemicals in the process unit material with high risk and large proportion.If the on-line calculation is clear,the correctness of the identification results of major hazard sources can be well guaranteed.
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