Nuclear power plant reactor building air pollution monitoring system and method

Abstract

The invention discloses a nuclear power plant reactor building air pollution monitoring system and method. The method comprises the steps that S1 air monitors are arranged in a voltage stabilizer room, a refueling hall, a steam generator primary side floor, a large-diameter primary loop valve floor, a radioactive component maintenance room and a radioactive wastewater collection room respectively; S2 an alarm threshold value is set for each air monitor, and when any air monitor judges that air pollution in the space where the air monitor is located exceeds the alarm threshold value, an alarm signal is output; and S3 the alarm signal is received, and a personnel response instruction is output. According to the nuclear power plant reactor building air pollution monitoring system and method, by arranging the air monitors and setting the alarm threshold values respectively, each room is provided with the space monitor for real-time monitoring and alarming, a background monitoring device outputs a personnel response instruction after receiving the alarm signal, and timely response and intervention are carried out by on-site workers.

Description

technical field [0001] The invention relates to a method for monitoring air pollution in a nuclear power plant, in particular to a system and method for monitoring air pollution in a reactor building during refueling and overhaul of a nuclear power plant. Background technique [0002] During the refueling overhaul period of the nuclear power plant, the radioactive system and equipment in the reactor building are overhauled as planned. These tasks will produce radioactive iodine and radioactive aerosol air pollution. Air pollution monitoring is required in the workplace to evaluate protection through monitoring The effectiveness of measures, real-time access to monitoring data and alarm status, in order to initiate intervention actions to avoid the spread of air pollution and prevent personnel inhalation. [0003] In the original design, a radioactive iodine and radioactive aerosol air pollution monitor was fixedly installed on the bottom floor of the entire reactor building....

AI Technical Summary

Problems solved by technology

During refueling and overhaul, these two fixed monitors measure the air pollution of the entire reactor building, and cannot target multiple maintenance work sites in the plant. If air pollution occurs in a certain place, the fixed monitors measure abnormal data and There will be a delay in the alarm time

In addition, the measurement representativeness and validity of the two fixed monitors will be further reduced due to the outage of the ventilation system for maintenance

The current fixed monitoring design cannot obtain the monitoring data and alarm status of the workplace in a real-time and targeted manner, and cannot effectively reduce the risk of air pollution diffusion and personnel inhalation in the workplace

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