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A strategy analysis method for periodic testing of passive hydrogen elimination system in nuclear power plant containment

A technique of periodical test and analysis method, applied in the field of periodical test strategy analysis of containment passive hydrogen elimination system of nuclear power plant, to achieve the effect of reliable and effective test basis

Active Publication Date: 2021-11-16
CHINA NUCLEAR POWER ENG CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no clear research and analysis method for the periodic test strategy of the containment passive hydrogen elimination system in this field

Method used

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  • A strategy analysis method for periodic testing of passive hydrogen elimination system in nuclear power plant containment
  • A strategy analysis method for periodic testing of passive hydrogen elimination system in nuclear power plant containment
  • A strategy analysis method for periodic testing of passive hydrogen elimination system in nuclear power plant containment

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Embodiment

[0038] Taking the containment passive hydrogen elimination system of a one-million-kilowatt nuclear power plant in China as an example, the specific formulation method of the periodic test strategy is introduced as follows:

[0039] (1) Determine the importance of the passive hydrogen recombiner for mitigating the consequences of accidents through accident analysis and calculation conclusions. In this embodiment, it is determined through calculation that the rooms such as the evaporator room and the pressurizer compartment in the containment have the risk of hydrogen accumulation in severe accidents. Periodic tests require random inspection of the hydrogen recombiners in each evaporator room, pressurizer compartment and other rooms as much as possible to verify that the hydrogen recombiners in these key locations are available.

[0040] (2) According to the principle of random sampling and taking into account the uniformity of sampling, in order to discover potential hydrogen ...

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Abstract

The invention belongs to the reactor design technology, and in particular relates to a method for analyzing the periodic test strategy of the containment passive hydrogen elimination system of a nuclear power plant. This method comprehensively considers the equipment information of the passive hydrogen elimination system in the containment, the hydrogen dispersion status in the containment after the accident, the dose rate of personnel exposure, the feedback of the actual operation experience of the power plant, etc. The verification method of the periodic test strategy of the hydrogen elimination system is to determine that the periodic test strategy of the containment passive hydrogen elimination system formulated by the present invention is reasonable and scientific, thereby ensuring that the system function meets the design requirements.

Description

technical field [0001] The invention belongs to the reactor design technology, and in particular relates to a method for analyzing the periodic test strategy of the containment passive hydrogen elimination system of a nuclear power plant. Background technique [0002] The containment passive hydrogen elimination system (EUH) is used to reduce the hydrogen concentration in the atmosphere of the containment to below the safe limit under the design basis and beyond the design basis accident conditions, so as to avoid the occurrence of the third disaster caused by the hydrogen explosion. Barrier - Failure of the containment vessel. [0003] There are two main sources of hydrogen in the containment: [0004] —In the reactor pressure vessel: the zirconium in the fuel element cladding reacts with water or water vapor to produce hydrogen; [0005] — Outside the reactor pressure vessel: the core melt in the reactor pressure vessel melts through the lower head of the pressure vessel...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C9/02
CPCG21C9/02Y02E30/30
Inventor 易珂尚臣唐涛张莉孙涛杨晓燕
Owner CHINA NUCLEAR POWER ENG CO LTD
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