A nuclear power plant fire consequence simulation method and system

Abstract

The invention provides a nuclear power plant fire consequence simulation method and system, and the method comprises the steps: identifying a fireproof partition affected by a fire, setting a fire working condition scene in the fireproof partition, and generating post-fire equipment failure data corresponding to the fire working condition scene; selecting the fire working condition scene needing to be simulated, and activating the equipment failure data corresponding to the fire working condition scene; and sending the equipment failure data to a full-range simulator, wherein the full-range simulator simulates a fire result according to the equipment failure data. According to the nuclear power plant fire consequence simulation method and system, for particularity of the fire working condition, the post-fire equipment failure data are determined from fire load analysis and used for simulating fire working conditions in the full-range simulator in an approximate real mode, so that the dynamic influence of the fire process on unit operation is reflected relatively truly, and a good technical effect is achieved.

Description

technical field [0001] The invention relates to the technical field of nuclear power safety, in particular to a method and system for simulating fire consequences in a nuclear power plant. Background technique [0002] Fire is one of the external disasters that nuclear power plants must consider. The fire protection design of nuclear power plants should not only consider reducing the possibility of fires, but also reduce the consequences of fires. The ultimate goal is to ensure that when a fire occurs in any area of ​​the nuclear power plant The crew can be evacuated and maintained in a safe state. At present, nuclear power plants generally separate and arrange redundant equipment performing the same safety function by dividing fire compartments, supplemented by fire doors, smoke exhaust valves and other fire protection facilities to limit the consequences of a fire in a certain area, and prevent the fire from spreading to adjacent fire compartments. . On the basis of the ...

AI Technical Summary

Problems solved by technology

However, there are significant differences between fire conditions and failure conditions such as power failure: (1) For failure conditions such as power failure, the equipment will be in a predictable and definite state after power failure (for example, the pump will stop running after losing the power supply; , some solenoid valves are automatically closed after losing the control power supply), therefore, it is easier to realize the simulation of power failure conditions in the simulator

As for the fire condition, considering the destructive characteristics of the fire, the fire may directly damage the relevant measurement or control cables, digital instrument and control system cabinets or the equipment itself. The consequences of different damage situations are not the same. The behavior of equipment under these conditions is often unpredictable, which brings challenges to the current simulator simulation of fire conditions; (2) Considering the characteristics of fire persistence and spread, the scope of fire influence is gradually expanding, and the number of affected equipment It is also growing gradually, and the current simulator cannot simulate the dynamic impact of different stages of the fire process on the operation of the unit

Based on the aforementioned reasons, the current simulation method for fire conditions is distorted and cannot truly reflect the behavior of nuclear power units under fire conditions

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