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Nuclear power plant overhaul safety risk management tool development method

A risk management tool and risk management technology, applied in the field of nuclear safety risk management of nuclear power plant overhaul, can solve problems such as the inability to systematically and effectively identify and measure the nuclear safety risk of power plant overhaul, and the inability to measure risks.

Pending Publication Date: 2020-10-20
CNNC NUCLEAR POWER OPERATION MANAGEMENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical specifications limit the status of each safety system and equipment in a nuclear power plant in different operating modes, but the technical specifications generally give requirements for a single system, and cannot measure the risk of multiple systems or equipment being unavailable at the same time. Out of guidance
Although some technical specifications have made some simple regulations on multiple equipment failures, and some nuclear power plants have added other management requirements in addition to the technical specifications, but due to the complexity and diversity of nuclear power plant configurations, these regulations and management requirements It is not possible to systematically and effectively identify, measure and manage nuclear safety risks in power plant overhaul

Method used

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  • Nuclear power plant overhaul safety risk management tool development method
  • Nuclear power plant overhaul safety risk management tool development method
  • Nuclear power plant overhaul safety risk management tool development method

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Embodiment Construction

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Aiming at the current situation that domestic overhaul nuclear safety risk management is not systematic and effective, based on the theory of defense in depth, from the perspective of maintaining key safety functions, using safety function analysis tree, fault tree analysis and other means to establish a system that integrates power plant configuration and key safety functions A linked holistic model for assessing changes in risk due to configuration changes during power plant overhauls. Management guidelines for different nuclear safety risk levels have been prepared to instruct users to take measures to rebuild defense-in-depth or protect available equipment when systems or equipment become unavailable either planned or unplanned to ensure the safety of major repairs. Specific steps are as follows:

[0027] (1) Selection of ke...

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Abstract

The invention discloses a nuclear power plant overhaul safety risk management tool development method. The method comprises the following steps of 1, selecting a key safety function; 2, analyzing theoperation state of a power plant; 3, determining risk characterization; 4, establishing a safety function analysis tree; 5, establishing a system fault tree; and 6, creating a risk management guide rule. The method has the beneficial effects that (1) the method is provided for overhaul planners, so that the optimal time period for the system to quit operation is determined from the perspective ofnuclear safety, and the overhaul plan is optimized; (2) the method is provided for overhaul planners, and overhaul stages with high nuclear safety risks are systematically determined from the perspective of safety so as to make appropriate prevention measures and emergency plans; (3) an operator is helped to identify the nuclear safety risk in the overhaul period, and execute prevention measures and emergency plans under the condition of relatively high risk; and (4) the employee is helped to independently examine the overhaul plan from the perspective of nuclear safety.

Description

technical field [0001] The invention belongs to the field of nuclear safety risk management in overhaul of nuclear power plants, and particularly relates to the development of an overhaul nuclear safety risk management tool. This tool can be used to evaluate the degree of degradation of the nuclear power plant's defense-in-depth level and the risk of loss of key safety functions according to the power plant operation mode, system status, equipment failure, etc. Defense in depth or protect critical equipment to reduce risk. Background technique [0002] During the shutdown and overhaul of the nuclear power plant, due to the large amount of work to be performed, the centralized shutdown of system equipment, unreasonable work arrangements, personnel operation errors, and random failure of system equipment may affect the nuclear safety during the shutdown period. Therefore, the nuclear power plant overhaul should be Properly managed to ensure that nuclear safety is maintained. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/00G06Q10/06G06Q50/06
CPCG06Q10/20G06Q10/0635G06Q50/06Y04S10/50
Inventor 李乐黄伟兵陈洪浩陈伦寿李跃王珍琪邹胜佳李雪松曹勇叶天波吴剑陶殷勇任诚张俊刘东林林焕
Owner CNNC NUCLEAR POWER OPERATION MANAGEMENT
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