Application of the EOOS Monitor~TM at River Bend Station to Assess On-Line Maintenance and Shutdown Risk

摘要

The Equipment Out-of-Service (EOOS) Monitor~TM is a dynamic tool for plant operations and maintenance personnel that performs real-time calculations of plant risk. Plant personnel can use the software to assess the risks associated with specific configurations using both qualiative (i.e., system status-based defense in depth) and quantitative (i.e., PSA) measures. The software has been developed under the Electric Power Research Institute's (EPRI) Risk and Reliability (R&R) Workstation program and is currently in use at Northeast Utilities/Millstone 3, Entergy/Waterford, American Electric Power and Florida Power Corporation. Entergy's River Bend Station project was initially driven by a desire in the control room needed a more structured way of assessing plant risk during both planned and unplanned configurations. Status displays of the software will allow operators to assess plant risk during both full-power and shutdown modes. The scope of the project has since been increased to include interfaces to plant computer systems and enhancements for on-line and outage schedulers. An interface between the EOOS Monitor~TM and the scheduling software will be developed to allow automatic evaluation of their planned maintenance schedules. Schedulers can quickly identify areas of high risk and adjust work activities until a tolerable risk level is achieved. In addition, the software will communicate with the River Bend plant tagging system to allow automatic updates of plant risk as equipment is removed and restored to service. The input data and results of the EOOS Monitor~TM operate on River Bend's Local Area Network (LAN) permitting plant-wide access to configuration-specific risk status.