Nuclear power main control room ventilation air conditioning system

Abstract

The invention relates to a nuclear power main control room ventilation air conditioning system. The system comprises a normal ventilation air conditioning system, an emergent filter ventilation air conditioning system and a served area; the emergent filter ventilation air conditioning system is in control connection with a radiation monitoring system; the normal ventilation air conditioning system comprises two sets of air conditioner units connected in parallel; the air conditioner units are in entity separation; intake ends of the air conditioner units are both connected with a normal fresh air port, and exhaust ends are both connected with the served area; an intake end of the emergent filter ventilation air conditioning system is connected with an emergent fresh air port, and an exhaust end is connected with intake ends of the air conditioner units; an intake end pipeline of the normal ventilation air conditioning system and an intake end pipeline of the emergent filter ventilation air conditioning system are both provided with electric isolation valves; and fireproof valves are respectively arranged on intake end pipelines and exhaust end pipelines of the two air conditioner units. The system satisfies the residing requirements of a main control room under normal working conditions and accident working conditions, is more reasonable in structural design, and improves the operation safety and reliability of a nuclear power station.

Description

technical field [0001] The invention belongs to a ventilation and air-conditioning system of a nuclear power plant, and in particular relates to a safer design of a ventilation and air-conditioning system for a main control room of a nuclear power plant. Background technique [0002] The main control room ventilation and air conditioning system is to provide ventilation and air conditioning services for the main control room, computer room, technical support center, kitchen, bathroom, etc., to keep the temperature and humidity in the room within the specified limits to meet the equipment operation and long-term stay of personnel requirements to ensure the habitability of the habitable area of ​​the main control room under normal and accident conditions. [0003] In order to realize its functions, the ventilation and air-conditioning system of the main control room is designed to run continuously under both normal working conditions and accident working conditions. Such as ...

AI Technical Summary

Problems solved by technology

[0008] 1) After calculation, the cumulative dose of the personnel in the main control room exceeds the limit requirements of the specifications GB18871-2002 and HAD002 / 01-2010 under the severe accident conditions of the existing ventilation and air conditioning system, which does not meet the resident requirements of the personnel in the main control room Require

[0009] 2) The two air-conditioning units of the existing air-conditioning system are arranged in the same machine room. If one air-conditioning unit catches fire, the system will be shut down, and the habitability of the main control room will not be maintained, which poses a serious threat to the safety of the nuclear power plant

[0010] 3) The emergency filtration, ventilation and air-conditioning system has only one emergency filtration pipeline as the core equipment of emergency filtration (pre-filter, pre-HEPA filter, electric heater, iodine adsorber and post-HEPA filter). Failure under accident conditions will lead to the failure of the entire emergency pipeline, which will affect the execution of its safety-related functions, and then the main control room will lose its habitability

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