System and method for monitoring temperature of primary loop equipment during NSSS (nuclear steam supply system) cold functional test

Abstract

The invention provides a system and a method for monitoring the temperature of primary loop equipment during an NSSS (nuclear steam supply system) cold functional test, and belongs to the technical field of nuclear safety. The system comprises a temporary thermal resistor and a distributed control system, wherein the temporary thermal resistor is arranged on the outer surface of the main loop equipment, and is used for collecting a temporary temperature signal of the primary loop equipment; the distributed control system comprises a thermal resistor terminal module and a thermal resistor input module; the thermal resistor terminal module is connected with the temporary thermal resistor, and is used for receiving and sending the temporary temperature signal; and the thermal resistor input module is connected with the thermal resistor terminal module, and is used for receiving and processing the temporary temperature signal to obtain temporary temperature data. According to the system and method, the temporary temperature signal is collected by the temporary thermal resistor, the critical path time of signal processing can be reduced, the testing accuracy is promoted, the temperature of the primary loop equipment is effectively monitored, and primary equipment safety and safety of field testers can be protected.

Description

technical field [0001] The invention relates to the technical field of nuclear safety, and more specifically relates to a temperature monitoring system and method for main circuit equipment in an NSSS cold state functional test room. Background technique [0002] The "temperature-pressure" range stipulates during the NSSS cold state functional test: (1) The pressure rises and stabilizes the stage to ensure the full circulation of the RCP, including the voltage stabilizer, so as to make the temperature of the metal and fluid in the main circuit consistent and avoid overcooling (2) To avoid the rapid rise of temperature, the purpose is not to cause too much thermal stress on the equipment; (3) In order to facilitate the operation and test platform operation, to prevent the risk of the pressure vessel being in the brittle transition zone during the hydrostatic test, Between 25bar and 228bar pressure platforms, the temperature of the main circuit must be above 35°C; (4) In order...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the large number of signal analysis and recording instruments used in the temperature monitoring system of the main equipment during the NSSS cold state function test of the prior art, multiple 24V constant current power supplies, a large number of hard wiring, and the experimental results are affected by the stability of the 24V constant current source, etc. To solve the problem, a temperature monitoring system and method for the main circuit equipment in the NSSS cold-state functional test room is proposed, which can avoid the use of signal recorders and multiple 24V constant current power supplies, save costs, and avoid a large number of hardware in complex field environments. Wiring saves critical path time and improves test accuracy

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