TS 3.4, 10.3, Overpressure Protection Systems, states, in part, that in mode 5 or 6, two pressurizer overprotection system relief valves with a lift setting of less than or equal to 375 psig, be
operable. With one pressurizer overprotection system relief valve
inoperable, action is required to restore the valve to
operable status in
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> or complete depressurization and vent of the
RCS. Contrary to the above, on April 11, 2011,
PSEG determined that the 2PR1, one of the pressurized overprotection system relief valves, had been
inoperable for more than
24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Upon discovery,
PSEG completed depressurization and venting of the
RCS. This violation was determined to be of very low safety significance (green) because it did not increase the likelihood of a loss of
RCS inventory, it did not degrade
PSEGs ability to remove decay heat using the
RHR of
AFW systems, and did not affect
PSEGs ability to terminate a leak path.
PSEG entered this violation in their
CAP as notification 20504682.
