A Test of a System Modeling Method for a Trip Model Development

In this paper, we present a method for a system modeling for the development of a trip model. We developed a trip model for a main feedwater (MFW) system and reviewed the appropriateness of the modeling method through its quantification. The primary use of trip models has been for trip monitors that are used by operators during a decision-making when prioritizing and selecting components for a online maintenance. Trip monitors are valuable tools for keeping track of: - Current expected failure rates for SSCs - Ability of a plant to respond to SSC failures - Online trip risk as a function of which components are in and out of service during operation.