05000388/FIN-2013007-03
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Finding | |
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| Title | Failure To Implement The Corrective Action Process |
| Description | A self-revealing finding (FIN) of very low safety significance (Green) was identified for PPL staffs failure to follow their CAP procedure, NDAP-QA-0702, Action Request and Condition Report Process, in response to an identified issue with the FW system. Specifically, on August, 23, 2011, PPLs staff did not initiate an action request (AR) or condition report (CR) after determining that ICS digital FW valve control needed to be placed in Manual Valve Control mode prior to de-energizing the 3A motor operated valve (MOV) in order to prevent a loss of all FW flow. This issue went unaddressed and subsequently on December 19, 2012, Unit 2 scrammed on low RPV water level when operators, while attempting to open the stuck 3A valve, opened the 3A valve power supply breaker with the A RFP FW valve controls in automatic causing a loss of all normal FW. The PPL staff entered this issue into the CAP as CR 1653480. The finding was more than minor because it was associated with the human performance attribute of the Mitigating Systems Cornerstone and adversely impacted the objective to ensure the availability, reliability and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). The finding was evaluated using NRC IMC 0609, Attachment 0609.04, Initial Characterization of Findings, and Appendix A, User Guidance for Significance Determination for At-Power Situations, and screened as very low safety significance (Green) per Exhibit 2. The inspectors determined that this finding had a cross-cutting aspect in the area of Problem Identification and Resolution, CAP, because PPLs staff did not implement the CAP with a low threshold for identifying issues completely, accurately, and in a timely manner commensurate with their safety significance. Specifically, PPLs staff did not identify non-conforming issues for FW valve control, design and operation that eventually led to a loss of normal FW and scram of Unit 2 on December 19, 2012. |
| Site: | Susquehanna  |
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| Report | IR 05000388/2013007 Section 4OA5 |
| Date counted | Mar 31, 2013 (2013Q1) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | J Caruso J Richmond D Jackson J Hawkins C Miller V Gaddy B Larson C Steely D Strickland T Farina |
| CCA | P.1, Identification |
| INPO aspect | PI.1 |
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Finding - Susquehanna - IR 05000388/2013007 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Susquehanna) @ 2013Q1
Self-Identified List (Susquehanna)
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