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Core damage assessment method for nuclear power plant

An evaluation method and technology for nuclear power plants, applied in nuclear power generation, nuclear reactor monitoring, reactors, etc., can solve the problems of not considering the latest power plant design features, not having universality, and not being able to make full use of it, so as to achieve data information sharing and convenient connection Effect

Active Publication Date: 2015-10-28
CHINA NUCLEAR POWER ENG CO LTD
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Problems solved by technology

however, the system does not take into account the latest plant design features and cannot take full advantage of other important parameters that can monitor the state of the core; moreover, the system can only be developed for a specific plant and is not universal

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  • Core damage assessment method for nuclear power plant
  • Core damage assessment method for nuclear power plant
  • Core damage assessment method for nuclear power plant

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Embodiment Construction

[0035] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] For PWR nuclear power plants, the parameters that can reflect the core damage state are mainly divided into two categories according to the acquisition time, one is the online monitoring parameters of the nuclear power plant, which can real-time reactor core status; the other is the post-accident sampling parameters, Results can be given some time after the accident. Although the post-accident sampling parameters have a certain delay, once the on-line monitoring parameters are not available, the post-accident sampling parameters can also be used as a means to evaluate the core damage state.

[0037] Zirconium water reaction is an important phenomenon in severe accidents, and the amount of hydrogen produced by zirconium water reaction is positively correlated with the degree of core damage. For nuclear power plants installed with hydrogen monit...

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Abstract

The invention belongs to the technical field of nuclear power plant design, and particularly relates to a core damage assessment method for a nuclear power plant. The method includes the step of conducting core damage assessment through the parameters such as the core outlet thermocouple temperature (CET), the containment internal radiation level (CRM), the primary circuit heat pipe section temperature (RTD), the pressure vessel water level (RVL) and the source range detector reading (SRM), and further includes the step of conducting core damage assessment through containment internal hydrogen concentration (CH) and primary circuit coolant sampling concentration (SAM). According to the core damage assessment method for the nuclear power plant, the design characteristic of the latest nuclear power plant is fully considered, various monitoring parameters capable of reflecting the core state are adopted, hence, the core damage state and the degree are assessed through diversified means, and quick and visual support is provided for emergency aid decision making of the nuclear power plant.

Description

technical field [0001] The invention belongs to the technical field of nuclear power plant design, and in particular relates to a nuclear power plant core damage evaluation method. Background technique [0002] The core damage status of nuclear power plants is an important basis for decision-making in emergency accident handling and mitigation and emergency protection actions. The development of core damage evaluation procedures is of great significance for emergency auxiliary decision-making in nuclear power plants. my country's nuclear safety guide "Emergency Preparedness and Emergency Response for Nuclear Power Plant Operating Organizations" (HAD002 / 01-2010) stipulates that the method and mode of core damage assessment should be explained in the emergency plan. The "Twelfth Five-Year Plan for Nuclear Safety and Radioactive Pollution Prevention and Long-term Goals for 2020" requires the establishment of an expert system for real-time evaluation of the core damage status of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/00
CPCG21C17/00Y02E30/30
Inventor 李文静朱文韬赵博孙金龙魏玮喻新利
Owner CHINA NUCLEAR POWER ENG CO LTD
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