05000237/FIN-2011003-09
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Finding | |
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| Title | Licensee-Identified Violation |
| Description | Technical Specification (TS) Surveillance Requirement 3.6.1.3.10 requires that the leakage rate through each MSIV leakage path is less than or equal to 34 standard cubic feet per hour (scfh) when tested at greater than or equal to 25 pound-force per square inch gauge (psig), and the combined leakage rate for all MSIV leakage paths is less than or equal to 86 scfh when tested at greater than or equal to 25 psig. Contrary to this, on November 1, 2010, the licensee identified that the leakage rate on three MSIVs exceeded the allowable limits specified in TS Surveillance Requirement 3.6.1.3.10. The 3-0203-1C, 3-0203-1D and 3-0203-2D valves were found to have 52.8, 34.6 and 36.9 scfh leakages, respectively. Based on the as-found leakage rates, Surveillance Requirement 3.6.1.3.10 was not met. The licensee documented this condition in issue reports (IRs) 1133829, 1133832 and 1133833, respectively. The inspectors evaluated this finding using IMC 0609.04, Phase 1 Initial Screening and Characterization of Findings. The inspectors answered No to all the questions on Table 4a, Characterization Worksheet for IE, MS, and BI Cornerstone, under the Containment Barrier column, therefore, the finding screened as of very low safety significance (Green). In addition, the combined MSIV leakage was within the allowable leakage limits for overall primary containment. The three MSIVs that exhibited excessive leakage were repaired and successfully retested. |
| Site: | Dresden  |
|---|---|
| Report | IR 05000237/2011003 Section 4OA7 |
| Date counted | Jun 30, 2011 (2011Q2) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | M Bielby M Ring T Go J Draper C Tilton J Corujo-Sandin M Munir R Winter A Dahbur D Melendez-Colon C Phillips C Moore |
| INPO aspect | |
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Finding - Dresden - IR 05000237/2011003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Dresden) @ 2011Q2
Self-Identified List (Dresden)
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