FLEET WIDE PURSUIT OF RISK-INFORMED INITIATIVE 5B - SURVEILLANCE FREQUENCY CONTROL PROGRAM (SFCP) AT EXELON NUCLEAR STATIONS

摘要

Exelon Nuclear's Limerick Generating Station (LGS) became the first plant to receive Nuclear Regulatory Commission (NRC) approval in September of 2006 to control its own surveillance test intervals via a Surveillance Frequency Control Program (SFCP). Exelon is now pursuing a fleet wide strategic initiative to implement the SFCP at its other nine (9) nuclear stations utilizing the regulatory framework established by the NRC. Exelon submitted license amendment requests (LARs) to the NRC for these nine stations in the 2009 and early 2010 timeframe. These LARs utilize Technical Specification Task Force (TSTF) traveler TSTF-425, "Relocate Surveillance Frequencies to Licensee Control - RITSTF Initiative 5b" that was subsequently developed based on the LGS pilot and NEI methodology and was approved by the NRC. The NRC granted approval to Exelon's Peach Bottom Atomic Power Station in August of 2010, Oyster Creek Generating Station in September of 2010 and Three Mile Island Nuclear Station in January 2011. Exelon expects to receive approval from the NRC for the balance of its nuclear stations by early 2011. Implementation of the SFCP occurs within the timeframe approved by the NRC as specified in each site's respective license amendment request (LAR) and is typically sixty (60) or one hundred twenty (120) days. Implementation of the SFCP at all Exelon sites is expected to be completed by the mid 2011. Exelon will be adapting the SFCP process and procedures initially developed for Limerick to apply toward its entire nuclear fleet by the end of 2011. In the interim, sites are implementing the SFCP on a site-specific basis. This paper is sequel to a topical paper presented by Philip Tarpinian et al, titled "Implementation of a Risk-Informed Surveillance Frequency Control Program - A PRA Perspective" (Reference 1) at ANS PSA 2008 conference.