Safety assessment method and system for nuclear power station workshop process system

Abstract

The invention provides a safety assessment method for a nuclear power station workshop process system; the method comprises the following steps: monitoring the foundation deformation condition of a nuclear power station workshop, and acquiring the deformation data of the nuclear power station workshop; calculating a pipeline settlement difference according to the deformation data; when the pipeline settlement difference is greater than or equal to a preset design value, acquiring a deformation difference limit value of the pipeline according to the current working condition; and when the pipeline settlement difference is greater than or equal to the deformation difference limit value of the pipeline, controlling a support hanger of the pipeline to adjust. The invention further provides a safety evaluation system of the nuclear power station workshop process system. According to the safety assessment method and system for the nuclear power station workshop process system, safety assessment of the process system caused by the settlement difference of the nuclear power station workshop on the soft rock foundation can be achieved, the applicability is high, and the safety and reliability of pipelines of the workshop process system can be guaranteed.

Description

【Technical field】 [0001] The invention relates to the technical field of safety assessment, in particular to a safety assessment method and system for a process system of a nuclear power plant building. 【Background technique】 [0002] In view of the important impact of foundation settlement and deformation on the overall safety of nuclear power plants, it is clearly required in the "Safety Regulations on Site Evaluation of Nuclear Facilities" and the Nuclear Safety Guide "Foundation Safety Issues in Nuclear Power Plants" to evaluate the settlement and deformation of foundations, and the assessment of foundation settlement Indispensable in security reviews. Usually, the nuclear safety-related items of a nuclear power plant are basically located on a foundation with better lithology, and the foundation settlement and deformation are small, and the foundation settlement problem generally does not constitute a key issue in nuclear safety assessment. However, as sites with bette...

AI Technical Summary

Problems solved by technology

Due to the timeliness of soft rock, nuclear island powerhouses built on soft rock foundations will experience large foundation settlement deformation and poor settlement of the plant rooms. Excessive settlement differences in nuclear island plant rooms will lead to process pipelines passing through different plants Cause secondary stress and affect the system installation and safe operation of nuclear power plants

[0003] At present, the process systems in the nuclear power plant are complex and numerous, and some process systems need to pass through different nuclear island main plants

Although the influence of the settlement difference of the nuclear island main plant room has been considered in the process system design process, there is no precedent at home and abroad for the safety evaluation of the nuclear island main plant room process system when the settlement difference exceeds the design limit. or experience

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