On September 16, 2008 at 0734 the James A, FitzPatrick Nuclear Power Plant was shutdown and operating in the refueling mode (Mode 5), when
shutdown cooling was lost.
Shutdown cooling was lost while hanging a tagout on the
Reactor Protection System (
RPS). When removing fuses as directed by the tagout, isolation logic for
Shutdown Cooling suction salve
10MOV-18 was actuated. This Suction Valve isolates the common
shutdown cooling suction line to all
Residual Heat Removal (
RHR) Pumps. At the time of the isolation cavity flood-up was in progress and the
time to boil was greater than 5.
5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br />. The appropriate Technical Specification LCO Actions were entered and
shutdown cooling was restored at 08:27.
Power was restored to RPS and work in that system has been suspended pending the results our investigation into the cause of the event. Also additional controls have been established to review any electrical jumper/ protective tagging interactions prior to installation.
The event has been entered into the corrective action program and a Licensee Event Report (LER) will be filed within 60 Days as required by 10 CFR 50.73(a)(2)(v).
The resident inspector has been briefed and the state Public Service Commission (
PSC) will also be notified.
