TS
LCO 3.4.3 requires the safety function of 11 valves (any combination of
SRVs and
SVs) to be
operable during operational Modes 1,2, and 3 or else be in Mode 3 within
12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> and in Mode 4 within an additional
36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. Contrary to the above, two
SRVs and one
SV were determined to have their as-found setpoints in excess of the TS allowable tolerance, thus leaving 10
operable SRVs and
SVs. The
SRVs and
SVs were replaced with refurbished valves for the 19th Unit 2 operating cycle. Additionally, LER 2-10-3 stated that
PBAPS will pursue a change to the plant\'s licensing bases to increase
SRV and
SV setpoint tolerances to the
ASME Code allowable + 3 percent tolerance. The licensee documented the event in JR 1120516. Since there was no actual loss of safety function as a result of this event, this issue is of very low (Green) safety significance. The LER associated with the event was documented in Section 40A3.2.
