Test device and test method for automatic chemical shutdown system

Abstract

The invention discloses a test device and a test method of an automatic chemical shutdown system. The invention includes a reactor pressure vessel, a primary circuit system connected with the inlet and outlet of the reactor pressure vessel to form a circulation loop; a pressure gauge and a thermometer arranged on the inlet and outlet of the reactor pressure vessel; the primary circuit system includes a boric acid elimination device connected in sequence , steam generator, main coolant pump and flow meter; the inlet and outlet of the reactor pressure vessel are more than two groups, the number of primary loop systems is the same as that of the reactor pressure vessel, and one of the primary loop systems is used to connect non- In the active automatic chemical shutdown system, a voltage stabilizer is connected to one of the primary loop systems; the core of the reactor pressure vessel adopts electric heating element rods to simulate nuclear fuel rods. The research results obtained by the invention can be used for the verification and optimization of the automatic chemical shutdown system of the nuclear reactor, so as to improve the inherent safety performance of the nuclear reactor.

Description

technical field [0001] The invention relates to the field of nuclear reactor safety, in particular to a testing device for an automatic chemical shutdown system and a testing method thereof. Background technique [0002] The expected transient ATWS that fails to scramble the reactor means that although the thermal parameters such as the temperature and pressure of the primary or secondary loop of the nuclear reactor exceed the protection thresholds, the control rod assembly does not fall due to the sticking rod and other reasons, and the reactor does not have an emergency shutdown. The expected transient of the heap. [0003] When an ATWS accident occurs in the reactor, the automatic chemical shutdown system adopts a passive method to inject concentrated boron water into the core to realize emergency shutdown and protect the safety of the reactor. Therefore, the design, test verification, optimization and engineering application of the automatic chemical shutdown system are...

AI Technical Summary

Problems solved by technology

[0002] The expected transient ATWS without emergency shutdown refers to that although the thermal parameters such as temperature and pressure of the primary or secondary loop of the nuclear reactor exceed the protection threshold, the control rod assembly does not fall due to sticking or other reasons, and the reactor does not have an emergency shutdown. expected transient of the heap

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