Test method, system and nuclear power equipment for priority module of nuclear power safety level I&C system

Abstract

The invention belongs to the technical field of nuclear power control, and discloses a method and system for testing a nuclear power safety level instrument control system priority module and nuclear power equipment. The method for testing the nuclear power safety level instrument control system priority module includes obtaining an input signal of the priority module; generating the number of test cases of an N-parameter combined test; performing the N-parameter combined test on the obtained input signal of the priority module according to the generated number of test cases of the N-parameter combined test; detecting whether a defect exists in a test result of the N-parameter combined test; and gradually improving an N value and performing the N-parameter combined test till it is detected that no defect exists in the test result of the N-parameter combined test. Compared with the prior art, the method for testing the nuclear power safety level instrument control system priority module performs the combined test on the input value of the priority module by gradually improving the intensity of the combined test, and on the premise of ensuring the test coverage rate, reduces the number of test cases, reduces test time and test labor cost, and improves work efficiency of the test.

Description

technical field

[0001] The invention belongs to the technical field of nuclear power control. More specifically, the invention relates to a testing method, system and nuclear power equipment for a priority module of a nuclear power safety level instrument and control system. Background technique

[0002] In the field of safety-level instrumentation and control systems of nuclear power, in order to avoid common cause failures of software systems, all possible combinations of input values ​​of priority modules of safety-level instrumentation and control system are usually fully tested.

[0003] However, due to the large number and types of input signals and complex logic of the priority module of the nuclear power safety instrument and control system, in the prior art, the number of fully tested test cases is very large, and manual testing and verification work consumes a lot of time and manpower , resulting in lower test productivity.

[0004] In view of this, it is indeed n...

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