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Emergency fresh air pipeline of ventilation system of main control room of nuclear power station

A ventilation system and main control room technology, which is applied in the field of structural design of the emergency fresh air pipeline of the ventilation system of the main control room of nuclear power plants, can solve the problems of radioactive smoke plume covering and difficulty in maintaining the resident function of the main control room, so as to improve reliability, Effect of reducing the risk of loss of habitability

Inactive Publication Date: 2012-12-12
CHINA NUCLEAR POWER ENG CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a single accident fresh air outlet is in an unfavorable wind direction, it is easy to be covered by radioactive plume, and it is difficult to maintain the habitable function of the main control room

Method used

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  • Emergency fresh air pipeline of ventilation system of main control room of nuclear power station
  • Emergency fresh air pipeline of ventilation system of main control room of nuclear power station
  • Emergency fresh air pipeline of ventilation system of main control room of nuclear power station

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] When an accident occurs in a nuclear power plant, radioactive substances will be released into the atmosphere, and the radiation dose in the atmosphere will be monitored by the radiation monitoring system, and the normal pipeline and the emergency pipeline will be switched manually or automatically according to the level of the radiation dose. In the original design of the nuclear power plant, the present invention adds an accidental air intake. When an accident occurs, if the first accidental air intake is covered by radioactive smoke and should no longer take in wind, the second accidental air intake is activated to take outdoor fresh air. Maintain the habitability of the main control room, thereby increasing the margin of fresh air supply capacity, reducing the hazards of the internal exposure of the main control personnel's ...

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Abstract

The invention relates to structural design of an emergency fresh air pipeline of a ventilation system of a main control room of a nuclear power station. The emergency fresh air pipeline comprises two accident air taking ports at different positions of a plant roof of the nuclear power station, and the two accident air taking ports are opened or closed through isolating valves respectively; the two accident air taking ports are connected by an air pipe and share one identical emergency air sending pipeline and are connected with an emergency accident air blower, the emergency accident air blower introduces fresh air from the outdoor into the main control room, and an iodine absorption device is arranged on the emergency air sending pipeline; and the two accident air taking ports are arranged in opposite directions relative to a reactor containment. The emergency fresh air pipeline disclosed by the invention reduces the risk of losing habitability of the main control room under the working condition of the accident, and improves the reliability and safety of the ventilation system of the main control room.

Description

technical field [0001] The invention belongs to nuclear power plant system design technology, in particular to a structural design of an emergency fresh air pipeline of a ventilation system in a main control room of a nuclear power plant. Background technique [0002] With the continuous development of nuclear power technology, severe accidents in nuclear power plants have drawn widespread attention from global nuclear safety authorities and the International Atomic Energy Agency, and all countries have realized that the possibility of severe accidents cannot be completely ruled out. The safety work of nuclear power should not only be limited to design basis accidents, but must also consider the countermeasures to mitigate and deal with severe accidents. After a serious accident, maintaining the habitability of the main control room has always been one of the focuses of domestic and foreign research institutions. [0003] China's nuclear safety authorities have also put for...

Claims

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Application Information

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IPC IPC(8): G21D1/04F24F7/06F24F13/02F24F13/28
CPCY02E30/40Y02E30/00
Inventor 赵新艳苑晓东刘鹏飞刘新建孙立臣戴一辉
Owner CHINA NUCLEAR POWER ENG CO LTD
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