05000387/FIN-2014005-05
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Multiple Inoperable Main Steam Safety Relief Valves On May 6, 2013, PPL determined that three main steam SRVs did not meet the setpoint criteria of +3%/-5% set forth in TS 3.4.3. PPL reported this condition under LER 05000388/2013-002. PPL determined that this had resulted in a condition prohibited by TS. Specifically, the LCO 3.4.3 states the safety function of 14 SRVs shall be operable while in Mode 1, 2, and 3. If LCO 3.4.3 is not met, action A.1 requires the reactor to be placed 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 mode 4 in 36 hours4.166667e-4 days <br />0.01 hours <br />5.952381e-5 weeks <br />1.3698e-5 months <br />. With three of the sixteen main steam SRVs inoperable due to setpoints less than the -5% criteria, LCO 3.4.3 was not met. Contrary to the above, PPL had not recognized the failure of the main steam SRV setpoint criteria until removed and tested during the Unit 2 Refueling and Inspection Outage in May 2013 and, therefore had not taken the required action. Traditional enforcement applies in accordance with IMC 0612, sections 0612-09 and 0612-13 and Enforcement Policy section 2.2.4.d, because the inspectors did not identify an associated PD. Specifically, the inspectors determined that the failure of main steam SRV setpoint criteria would not have been readily apparent. This issue was considered to be an SL IV violation of TS 3.4.3 in accordance with Enforcement Policy section 6.1.d. In addition, IMC 0612, Appendix B, Figures 1 and 2, Issue Screening, were referenced in documenting this SL IV licensee-identified NCV. There was no actual safety consequence and although not considered operable for design conditions the three SRVs would have relieved pressure before exceeding +3 percent. The SRV safety function, described in UFSAR 5.2.2.1.1, to prevent over-pressurization of the reactor coolant pressure boundary, was not adversely impacted. This Severity Level IV licensee-identified NCV was entered into PPLs CAP as CR-1700379. |
| Site: | Susquehanna  |
|---|---|
| Report | IR 05000387/2014005 Section 4OA7 |
| Date counted | Dec 31, 2014 (2014Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | D Lawyer F Arner F Bower H Gray J Brand J Furia J Grieves J Heinly J Nicholson M Patel O Masnyk-Bailey S Pindale T Daun C Graves |
| Violation of: | Technical Specification |
| INPO aspect | |
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Finding - Susquehanna - IR 05000387/2014005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Susquehanna) @ 2014Q4
Self-Identified List (Susquehanna)
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