Mechanical System Surveillance Test Interval Optimization.

概要

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In general, functional tests are required periodically to detect failures in standby equipment as a means of assuring their availability on demand. However, these functional tests may have an adverse impact on the system availability, because of their potential negative effects such as unavailability at the period of testing, increase of failure rate resulting from excessive wear due to testing. Therefore, in principle, there is an optimal test interval for each standby system. As it normally is difficult to determine analytically the optimal test interval for the real systems in the industry, we therefore introduce the Monte Carlo simulation method for this purpose. In this paper, a one-component system was chosen firstly to introduce the concept of test interval optimization as well as the feasibility of using Monte Carlo simulation. Secondly, a real system in the nuclear power plant, Standby-liquid-control system, was studied using Monte Carlo simulation technique. The promising results obtained confirm the concept and methodology used.
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