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Passive heat removal device for dealing with station blackout accident

A heat removal device and passive technology, applied in cooling devices, reactors, nuclear power generation, etc., can solve problems such as difficult to meet power failure accidents, achieve the effect of maintaining integrity and simplifying system equipment

Inactive Publication Date: 2013-01-09
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For nuclear power plants with active special safety facilities, the above-mentioned systems are difficult to meet the requirements for responding to plant-wide blackout accidents

Method used

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  • Passive heat removal device for dealing with station blackout accident

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Embodiment Construction

[0018] The passive heat removal device provided by the present invention to deal with the power outage accident of the whole plant, after the power outage accident of the whole plant, the passive residual heat removal system (PRS) on the secondary side is used to export the residual heat of the reactor core and the components of the reactor coolant system. The sensible heat of the equipment keeps the reactor in a safe shutdown state; the passive containment heat export system (PCS) is used to export the heat released from the core into the containment to maintain the integrity of the containment. The passive residual heat removal system (PRS) on the secondary side and the passive containment heat removal system (PCS) share the heat exchange tank.

[0019] The systems for performing safety functions in traditional nuclear power plants are all completed by active equipment and components, so the realization of safety functions after accidents depends on safety-level power supplie...

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Abstract

The invention relates to reactor design technology, in particular to a passive heat removal device for dealing with a station blackout accident. The passive heat removal device structurally comprises a secondary side passive residual heat removal system and a passive containment heat export system, and the secondary side passive residual heat removal system is used for exporting residual heat of a reactor core and sensible heat of various devices of a reactor coolant system, so that a reactor is maintained to be in a safe shutdown state. The passive containment heat export system is used for exporting heat in a containment released by the reactor core so as to maintain integrity of the containment. The secondary side passive residual heat removal system and the passive containment heat export system share a hot water tank. The passive heat removal device for dealing with the station blackout accident is capable of exporting decay heat of the reactor core and heat in containment space released by the reactor core under the working condition of the station blackout accident, and melting probability of the reactor core and probability of radioactive substances released to the environment are evidently lowered.

Description

technical field [0001] The invention relates to reactor design technology, in particular to a passive heat removal device for responding to power outage accidents in the whole plant. Background technique [0002] A plant outage is defined as the total loss of AC power within the plant. Traditional active nuclear power plants rely on AC power for core cooling, decay heat removal, and containment cooling, so the consequences of power outages for the entire plant are relatively serious. Mitigation measures for traditional active nuclear power plant power outages include: when a plant-wide power outage occurs, the hydrostatic test pump generator set or mobile diesel generator is started, and the hydrostatic test pump is supplied with power, and the refueling The boron-containing water in the water tank is injected into the shaft seal of the main pump to ensure the integrity of the shaft seal, the integrity of the seal of the main coolant pump, the concentration of boric acid in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C15/18
CPCY02E30/40Y02E30/30
Inventor 于勇赵侠宋代勇袁霞李军赵光辉王志刚李伟赵斌
Owner CHINA NUCLEAR POWER ENG CO LTD
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