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An evaluation method for periodic test cycle adjustment of nuclear power plants

A technology for periodic testing and nuclear power plants, applied in data processing applications, instruments, calculations, etc., can solve problems such as the lack of established system evaluation methods

Active Publication Date: 2021-08-24
CHINA NUCLEAR POWER ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, after adopting the long-term refueling strategy, there is no systematic and perfect evaluation method for the adjustment and demonstration methods of the regular test cycle at present, both internationally and domestically.

Method used

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  • An evaluation method for periodic test cycle adjustment of nuclear power plants
  • An evaluation method for periodic test cycle adjustment of nuclear power plants

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Embodiment Construction

[0022] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following takes the ventilation system of the upper charging pump room of a typical domestic pressurized water reactor nuclear power plant as an example, combined with figure 1 The flow chart of the evaluation method shown further details the present invention.

[0023] 1. Brief introduction to the regular test of the ventilation system of the upper charging pump room

[0024] The ventilation system of the upper charging pump room is a recirculation ventilation system. The heat load of the upper charging pump room is taken away by the cooling water when it flows through the cooling coil through the circulating action of the fan in the system. The cooling coil is continuously supplied with cooling water by the equipment cooling water system. This system is a safety-related system, which provides a guarantee for the normal operation of the safety-specific facilities and ...

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Abstract

The present invention relates to a kind of evaluation method for the periodic test cycle adjustment of nuclear power plants, comprising the following steps: (1) screening to obtain the regular test cycle caused by the extension of the fuel refueling cycle of the nuclear power plant from the original refueling cycle to the new refueling cycle A list of safety-related periodic test items that need to be adjusted; (II) For each periodic test item in the list whose periodic test cycle needs to be adjusted, evaluate the degree of influence of the adjustment of its periodic test cycle on the safety supervision level of related equipment, and demonstrate its regularity. Feasibility of test cycle adjustments and determination of target values ​​for regular test cycles. Using this method can improve the accuracy of evaluation results, reduce the workload of evaluation, reduce the repetition of demonstration work, and is conducive to popularization.

Description

technical field [0001] The invention belongs to the technical field of test period adjustment of periodic test items of nuclear power plants, and in particular relates to an evaluation method for periodic test period adjustment of nuclear power plants. Background technique [0002] At present, the nuclear fuel cycle management of in-service PWR power plants at home and abroad mostly adopts an annual (12 natural month) refueling strategy. In order to improve the economy of nuclear power plants and ensure their safety, some in-service nuclear power plants plan to adopt long-cycle fuel cycles Management (refueling cycle extended from 12 natural months to 18 natural months) refueling strategy. Due to the large changes in the state of the equipment when the unit is refueling, the safety risk is increased, and there are many interfaces between various professional types. Therefore, each time the refueling task is heavy, the time is tight, and the interfaces are complex, it is nece...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/06
Inventor 刘勇唐涛张莉赵思桥高超杜宇孙涛尚臣
Owner CHINA NUCLEAR POWER ENG CO LTD