Nuclear power station SEC system fault detection method, and device, equipment and storage medium

Abstract

The invention relates to the technical field of nuclear power station industrial safety, and especially relates to a nuclear power station SEC system fault detection method and device, equipment and a storage medium. The method comprises the steps that a heat exchange trunk obtains cooling water from a circulating water system through an SEC pump, the cooling water is filtered by a filter and enters a heat exchanger for heat exchange, and finally the cooling water is discharged from the heat exchange trunk, wherein the heat exchange trunk is provided with a pressure detection branch used for detecting the pressure of the heat exchange trunk; when the SEC system is subjected to fault detection, a first isolation valve is opened, a second isolation valve is closed, a pressure switch pressure release valve is opened, and a pressure signal of a pressure switch is obtained; when the pressure signal is lower than a preset threshold value, whether the SEC system generates a first alarm signal or not is judged, and whether the SEC system starts a second SEC pump or not is judged; and if the SEC system generates the first alarm signal and the SEC system starts the second SEC pump, it is determined that the SEC system is in a normal response state. The fault maintenance time can be saved, the random I0 consumption ratio is reduced, and unavailable events of the nuclear safety equipment are reduced.

Description

technical field [0001] The invention relates to the technical field of nuclear power plant industrial safety, in particular to a nuclear power plant SEC system failure inspection method, device, equipment and storage medium in the field of important plant water systems. Background technique [0002] Nuclear power plant SEC system (Essential Service Water System, important plant water system) is part of the cooling system of the nuclear island of the nuclear power plant. The heat load from the related structures, equipment cooling water system (RRI) and components is transferred to the final heat sink, which is sea water. SEC system mainly includes SEC pump, filter, heat exchanger (RRI-SEC), various valves and pipelines. [0003] The "Nuclear Safety-Related Systems and Equipment Periodic Test Supervision Program" requires that the "Emergency Switching of Series A SEC Pumps due to Low Outlet Pressure" or "Emergency Switching of Series B SEC Pumps Due to Low Outlet Pressure" b...

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to address the above technical problems and provide a nuclear power plant SEC system failure inspection method, device, computer equipment and storage media to solve the problem of isolating valve damage caused by regular inspections, and must isolate the dry heat exchanger corresponding to the damaged isolating valve. Road, and drain the seawater in the dry road of the corresponding heat exchanger to replace the isolation valve

And due to regular inspection, the inspection circuit is easily corroded and causes failure

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