Method, device and system for detecting availability of nuclear power station leveling box

Abstract

The invention relates to a method, a device and a system for detecting availability of a nuclear power station leveling box. The method comprises the following steps of: executing preparatory work before detection; after the preparation is completed, performing a charging test on the leveling box, performing availability evaluation on the leveling box according to a preset availability evaluationmethod, and outputting an availability evaluation result of the leveling box in a charging stage; and after the charging test is completed, performing a letdown test on the leveling box, performing availability evaluation on the leveling box according to a preset availability evaluation method, and outputting an availability evaluation result of the leveling box in a letdown stage. According to the method, the device and the system, the availability of the nuclear power station leveling box can be quantitatively detected and judged, the problem of high misjudgment of a single judgment condition is avoided, the authenticity of a measured value of the leveling box can be judged, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of availability detection of level boxes in nuclear power plants, and more specifically, to a method, device and system for detecting availability of level boxes in nuclear power plants. Background technique [0002] The EAU system leveling box is an important device for monitoring the deformation of the containment raft foundation, and the source of containment strength assessment and analysis data. At present, the nuclear power units in service and under construction are equipped with leveling boxes. Taking the CPR1000 unit as an example, there are 9 to 13 leveling boxes arranged in the raft foundation of each nuclear power unit in a "cross-shaped" distribution. [0003] The leveling box is pre-buried in the containment raft foundation during the construction of the nuclear power plant, and is connected to the reference water tank through water pipes and water collectors. The deformation of the raft founda...

AI Technical Summary

Problems solved by technology

However, because the level box is pre-buried in the concrete, the availability of the level box in nuclear power plants in the past could not be quantitatively tested. Only through regular reading comparisons and containment test results comparison verification observations and other methods, the data source is single, misjudgment is high, and it is impossible to judge. Authenticity of measured value of level box

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