05000416/FIN-2014003-02
Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Title 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures and Drawings,
states, in part, activities affecting quality shall be prescribed by documented procedures of a type appropriate to the circumstances and shall be accomplished in accordance wit these procedures. Contrary to the above, the licensee failed to assure that activitie affecting quality were prescribed by documented instructions of a type appropriate to th circumstances. Specifically, the licensee failed to meet the requirements of Electrica Standard ES03, Electrical Standard for Installation of Cables, Revision 1, in tha Chico A potting compound was not used to seal the drywell electrical penetration. A immediate corrective actions, the licensee removed the instrument cables and seale the penetration. The licensee entered this issue in the corrective action program unde Condition Report CR-GGN-2014-02141. Furthermore, the licensee evaluated th potential impact the open 4-inch penetration would have on the suppression pool' suppression capability and determined that having an open 4-inch diameter penetratio in the drywell did not cause the drywell bypass leakage criteria to be exceeded. Usin Manual Chapter 0609, Attachment 4, Initial Characterization of Findings, June 19, 2012, Table 2, Cornerstones Affected by Degraded Condition or Programmati Weakness, the inspectors determined this issue affected the Barrier Integrit Cornerstone. Using Manual Chapter 0609, Appendix A, Significance Determinatio Process (SOP) for Findings at Power, June 19, 2012, Exhibit 3, Barrier Integrit Screening Questions, the inspectors determined that this finding represented an actua open pathway in the physical integrity of reactor containment (valves, airlocks, etc.) containment isolation system (logic and instrumentation), and heat removal components Using Manual Chapter 0609, Appendix H, Containment Integrity Significanc Determination Process, dated May 6, 2004, the inspectors determined that this findin would not influence the likelihood of accidents leading to core damage. However, sinc this finding involved components significant to suppression pool integrity/scrubbing tha are important to LERF, the inspectors determined a detail risk analysis needed to b performed by a senior risk analyst. The senior risk analyst performed a detailed ris evaluation and determined that since the function of the systems/components did no fail, even with the failed penetration, and there was no failure of the safety function Therefore, this finding is of very low safety significance. |
| Site: | Grand Gulf  |
|---|---|
| Report | IR 05000416/2014003 Section 4OA7 |
| Date counted | Jun 30, 2014 (2014Q2) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | B Rice D Allen R Smith |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| INPO aspect | |
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Finding - Grand Gulf - IR 05000416/2014003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Grand Gulf) @ 2014Q2
Self-Identified List (Grand Gulf)
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