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 Entered dateEvent description
ENS 4744215 November 2011 22:19:00On 11/15/2011 at 1952 (EST), while performing a Fire Protection Program review, it was determined that one of the 'Multiple Spurious Operation' (MSO) modifications implemented during the P3R18 refueling outage adversely impacted Peach Bottom's fire safe shutdown analysis conclusions. New cabling that was routed for the Unit 3 High Pressure Coolant Injection (HPCI) system steam supply valve lacks appropriate fire barrier protection in the event of a postulated fire-induced damage to this cable. This cable is routed through a fire area in which the only credited and protected method of reactor level control for a fire in this area is HPCI. Postulated fire-induced damage in the cable could prevent the steam supply valve from opening, thereby causing the HPCI pump to be unavailable for an Appendix R fire. An hourly fire watch has been established as a compensatory action. The licensee has notified the NRC Resident Inspector.