05000382/FIN-2014007-02
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Finding | |
|---|---|
| Title | Inadequate Station Procedures for Temporary Emergency Diesel Generator |
| Description | The team identified a Green finding for inadequate station procedures for the temporary emergency diesel generators. Specifically, the licensee failed to ensure that Procedures OP-TEM-008, Emergency Diesel Generator A(B) Backup Temporary Diesel Generators, and ME-001-012, Temporary Power from Temporary Diesel for 3A2 and 3B2 4kV Buses (MODES 1-6), were maintained to ensure that the temporary diesels had enough capacity to supply auxiliary power to the required safe-shutdown loads. The team determined that the licensee failed to clearly establish appropriate instructions to ensure that operators would be running and verifying loads according to the prime rating, that three temporary diesels were capable of operating/connecting in parallel, and that required and desired loads were consistent among procedures and evaluations. In response to this issue, the licensee evaluated and updated station procedures, specified prime loading limitations, updated vendor contracts, incorporated procedure improvements as a result of training, and updated the adverse weather procedure. This finding was entered into the licensees corrective action program as CR-WF3-2014-05662 and CR-WF3-2014-05582. The team determined that failure to maintain procedures to ensure the temporary diesels have enough capacity to supply auxiliary power to required safe-shutdown loads was a performance deficiency. This performance deficiency was more than minor because it was associated with the equipment performance attribute of the Mitigating Systems cornerstone and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to events to prevent undesirable consequences. Specifically, the licensee failed to update Procedures OP-TEM-008 and ME-001-012, and vendor documents in accordance with engineering evaluation EC-47496 in a timely manner and prior to performance of the emergency diesel generator outage in January 2014. In accordance with Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, dated June 19, 2012, Exhibit 2, Mitigating Systems Screening Questions, this finding screened as having very low safety significance (Green) because it was a design or qualification deficiency that did not represent a loss of operability or functionality; did not represent an actual loss of safety function of the system or train; did not result in the loss of one or more trains of non- technical specification equipment; and did not screen as potentially risk-significant due to seismic, flooding, or severe weather. This finding had a cross-cutting aspect in the area of human performance associated with teamwork because the licensee failed to ensure that individuals and work groups communicate and coordinate their activities within and across organizational boundaries to ensure nuclear safety is maintained (H.4). |
| Site: | Waterford  |
|---|---|
| Report | IR 05000382/2014007 Section 1R21 |
| Date counted | Mar 31, 2015 (2015Q1) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | B Larson E Ruesch G Gardner G Ottenberg P Wagner S Makor |
| CCA | H.4, Teamwork |
| INPO aspect | PA.3 |
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Finding - Waterford - IR 05000382/2014007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Waterford) @ 2015Q1
Self-Identified List (Waterford)
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