05000311/FIN-2014002-08
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Finding | |
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| Title | NOED for Replacement of 24 Station Power Transformer |
| Description | An Unresolved Item (URI) was identified when PSEG requested, and the NRC granted, enforcement discretion from compliance with Salem TS section 3.8.1, AC Sources - Operating. The 24 SPT was declared inoperable at 1:56 p.m. on February 13, 2014. The 24 SPT was removed from service as required by guidance contained in an Adverse Condition Monitoring and Contingency Plan when transformer combustible gas levels indicated an active thermal fault. PSEG replaced the existing 24 SPT with a like-for-like spare. On February 13, 2014, the 24 SPT was declared inoperable due to elevated transformer combustible gas levels that indicated an active internal thermal fault. Offsite power for all three 4kV vital busses was shifted to the other offsite power source. Because TS 3.8.1.1, Action a.3, required restoration of the 24 SPT to operable status within 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br />, and the estimated time to replace the transformer with an onsite available spare was estimated to take up to 216 hours0.0025 days <br />0.06 hours <br />3.571429e-4 weeks <br />8.2188e-5 months <br />, or nine days, in total, PSEG requested enforcement discretion for six days beginning at the expiration of the TS Action Statement at 1:56 p.m. on February 16. Based on the NRC staffs evaluation of PSEGs request, to include adequately addressing IMC 0410 criteria, the NRC verbally granted the NOED during a subsequent telephone call at 9:15 p.m. on February 15. PSEG subsequently submitted a letter (ML14048A005) on February 17 documenting information previously discussed with the NRC on telephone conferences held on the evenings of February 14 and 15. Due to the successful completion of the replacement of the 24 SPT ahead of schedule, this NOED was terminated at 3:15 am on February 18, after an elapsed time of just over 37 hours4.282407e-4 days <br />0.0103 hours <br />6.117725e-5 weeks <br />1.40785e-5 months <br />. On February 19, the NRC documented the NOED and confirmation that PSEGs letter was consistent with the NOED request made verbally (ML14050A405). In accordance with IMC 0410, Notices of Enforcement Discretion, the resident inspectors open an URI when an NOED is granted to determine if there is a performance deficiency for causes which led to the need for the NOED. Further, the inspectors are to document staff determinations regarding enforcement, inspection, verification, and resolution activities in the next appropriate inspection report under the URI. Until these activities are completed, this issue will be treated as a URI. |
| Site: | Salem  |
|---|---|
| Report | IR 05000311/2014002 Section 4OA3 |
| Date counted | Mar 31, 2014 (2014Q1) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | A Ziedonis E Burket G Dentel J Schoppy P Finney R Barkley R Nimitza Patela Ziedonis E Burket G Dentel J Schoppy P Finney R Barkley |
| INPO aspect | |
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Finding - Salem - IR 05000311/2014002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Salem) @ 2014Q1
Self-Identified List (Salem)
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