An online time-dependent risk monitoring system and method for nuclear power plant production planning

Abstract

The invention discloses an on-line time correlation risk monitoring system and method of a nuclear power station production plan. The on-line time correlation risk monitoring system of a nuclear powerstation production plan includes an on-line reliability database module, a plan configuration management module, an on-line risk monitoring model updating module, and a risk calculation module, wherein the on-line reliability database module is used for acquiring the real-time configuration information of a nuclear power station on line, and automatically updating equipment reliability data; theplan configuration management module is used for managing plan initial configuration of each equipment, and plan configuration formed each plan events; the on-line risk monitoring model updating module is used for acquiring the real-time reliability data from the on-line reliability database module, and respectively acquiring plan initial configuration and plan configuration from the plan configuration management module, and performing updating according update rules preset by a Living-PSA model; and the risk calculation module is used for acquired the updated Living-PSA model and realizing calculation of the quantitative and qualitative risk indexes. The on-line time correlation risk monitoring system and method of a nuclear power station production plan can realizing on-line monitoring on the risk level, the equipment important degree, and the like in the production plane, can more accurately identify and optimize high risk activities, can reduce non-planned shut-down, and can improve the nuclear power station operation, maintenance and management efficiency.

Description

technical field [0001] The invention relates to the technical field of nuclear safety, in particular to an online time-related risk monitoring system and method for nuclear power plant production planning. Background technique [0002] Nuclear safety is an important prerequisite and foundation for the development of nuclear power and the application of nuclear energy. During the power operation of nuclear power plants, with the continuous accumulation of equipment operation time and the changes of multiple environmental factors inside and outside the plant, the reliability of equipment continues to decrease, and the probability of core damage under accident conditions also increases with time; once safety-related systems, Random failures of equipment will reduce the redundancy of safety systems and reduce the ability to mitigate accidents, which will also increase the risk of core damage. Therefore, the state, state duration, and environmental conditions of each device in a...

AI Technical Summary

Problems solved by technology

However, due to the inability to accurately collect the duration of different states of equipment in existing risk monitors, the "prescribed time" in the calculation formula of equipment reliability is set as the task time for equipment to participate in accident mitigation, which usually does not increase or decrease with the operating time of nuclear power plants. The system configuration changes, and the reliability parameters cannot be updated in time as the operating time of the nuclear power plant increases. Therefore, in the existing risk monitors, the cumulative failure probability of continuous operation equipment does not have time-related characteristics, and each of the existing risk monitoring methods The "risk identification" of planned events is mainly determined by the planners based on past operating experience and operating technical specification requirements, etc., to determine whether there is a risk of unit power reduction or stack jumping in planned events, but there is no quantitative risk judgment basis, and personnel are highly subjective

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