Nuclear power plant digital radiation monitoring system

Abstract

The invention belongs to the technical field of nuclear radiation measurement and automatic control, and particularly relates to a nuclear power plant digital radiation monitoring system. The system comprises multiple radiation monitoring channels; each radiation monitoring channel is connected with a data network digital control system of a nuclear power plant; the radiation monitoring channel comprises a detector; the detector is connected with an on-site processing box through a cable; the on-site processing box is provided with an RS485 communication port, an RS232 communication port, an analog input/output port and an on-off input/output port; and the ports of the on-site processing box are connected with the data network digital control system of the nuclear power plant through a terminal junction box. Through the nuclear power plant digital radiation monitoring system provided by the invention, the automatic level of the radiation monitoring equipment is improved, the equipment investment and the field workload are saved, the analysis of operators to the radiation data is facilitated, and the operation safety of the power plant is improved.

Description

technical field [0001] The invention belongs to the technical field of nuclear radiation measurement and automatic control, and in particular relates to a digital radiation monitoring system for nuclear power plants. Background technique [0002] The design of digital radiation monitoring system for nuclear power plants includes digital radiation monitoring instrument design, radiation monitoring system topology design and intelligent information management system software design. The radiation monitoring system of nuclear power plants has a certain number of radiation monitoring channels (on-site radiation monitors). complex. The radiation monitoring system of the existing nuclear power plants in operation is an analog device, and the main defects are reflected in the following aspects: [0003] 1) The data output of the on-site radiation monitoring instrument outputs analog signals, which cannot realize rapid collection of measurement data. [0004] 2) The air aerosol m...

AI Technical Summary

Problems solved by technology

[0003] 1) The on-site radiation monitoring instrument data outputs analog signals, which cannot realize rapid collection of measurement data

[0004] 2) Frequent false alarms of the air aerosol monitor inside the containment

[0005] 3) The humidity of the air sampled by the exhaust of the condenser is high, and the filter paper is frequently wet, which will cause a failure alarm of the monitoring equipment; at the same time, the gas with high humidity will increase the failure rate of the detector itself

[0006] 4) The lack of centralized collection and processing of radiation monitoring data does not meet the requirements of the digital control system of nuclear power plants

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