Method for computing maloperation rate of nuclear power station system

A calculation method and nuclear power plant technology, applied in the field of nuclear power plant system misoperation rate calculation, can solve problems such as huge workload, huge number of units, complex structure, etc., and achieve the effect of saving remodeling time

A calculation method and nuclear power plant technology, applied in the field of nuclear power plant system misoperation rate calculation, can solve problems such as huge workload, huge number of units, complex structure, etc., and achieve the effect of saving remodeling time

CN104408312AActive Publication Date: 2015-03-11CHINA TECHENERGY +1
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  • Method for computing maloperation rate of nuclear power station system
  • Method for computing maloperation rate of nuclear power station system
  • Method for computing maloperation rate of nuclear power station system

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Experimental program
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Embodiment Construction

[0054] Based on the Markov theory, the present invention establishes a calculation method for the misoperation rate of the MooN repairable system, which mainly includes workflow and engineering calculation examples. The following content of the invention will describe the workflow and application calculation examples in detail.

[0055] 1. Workflow

[0056] Workflow of the present invention follows general scientific research workflow, comprises following three steps:

[0057] a) Proof of applicability: first determine the applicability of the inventive method, and judge whether the actual application meets the constraints of the invention;

[0058] b) Establish a state space diagram (Markov chain): on the premise of satisfying a), apply Markov theory, and establish a system state space diagram according to the system malfunction and failure logic;

[0059] c) Deriving the expression of system misoperation rate (solving characteristic quantities): according to the state space...

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Abstract

The invention provides a method for computing the maloperation rate of a nuclear power station system. Based on the MooN architecture of the Markov principle, namely when M components among N components of the nuclear power station are under a normal working condition, the nuclear power station system is capable of working normally, and the state space diagram of the nuclear power station related system and a nuclear power station system failure frequency steady-state expression as shown in the description are established, wherein lambda refers to the maloperation failure rate and mu refers to the repair rate. When a processing and maintenance policy changes, no computational model needs to be re-established and only related parameters are modified to obtain the result after the adjustment of the maintenance policy.

Description

technical field [0001] The invention belongs to the technical field of safety-level instrumentation and control in the field of nuclear power, and in particular relates to a calculation method for a system malfunction rate of a nuclear power plant. Background technique [0002] Malfunction rate refers to the frequency of safety-level I&C systems mis-executing safety functions due to their own random failures (that is, the failure of components of the safety-level I&C system itself causes system misoperations) under normal on-site working conditions. Once the safety-level I&C system executes the safety function, the on-site working conditions are forcibly terminated. At this time, a series of investigation, recording, recovery and other processing measures need to be carried out until the cause of the safety function execution is found out and the on-site working conditions are restored to a continuable level. Only in the running state can the on-site working conditions be re...

Claims

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Application Information

Patent Timeline
11 Mar 2015
Publication
CN104408312A
IPC
G06F19/00
Inventors
θŽ«ζ˜Œη‘œ; 李明利