05000263/FIN-2009004-02
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Finding | |
|---|---|
| Title | Failure to Appropriately Implement TS 3.6.4.3 |
| Description | The inspectors identified a finding of very low significance and NCV of Technical Specification (TS) 3.6.4.3.B for the licensee not entering the associated limiting condition for operation (LCO) when presented with information that the A standby gas treatment (SBGT) system had not met all necessary acceptance criteria to pass a surveillance test required by TSs. Specifically, the time interval between the date of the failed test and the date when A SBGT was declared inoperable exceeded the required LCO and specific action time of TS 3.6.4.3.A (one standby gas subsystem inoperable).The licensee entered this issue into their corrective action program. The inspectors determined that the performance deficiency affected the cross-cutting area of Human Performance, having Decision Making components, and involving aspects associated with using conservative assumptions in decision making. H.1(b)The inspectors determined that the performance deficiency was more than minor and a finding because it impacted the Reactor Safety Barrier Integrity Cornerstone objective to provide reasonable assurance that physical design barriers; specifically, maintaining the functionality of the standby gas system, protect the public from radionuclide releases caused by accidents or events. The inspectors evaluated the finding using IMC 0609, Appendix A, Attachment 1, Significance Determination of Reactor Inspection Findings for At-Power Situations, using the Phase 1 Worksheet for the Containment Barrier Cornerstone. Since the finding only represented a degradation of the radiological barrier function provided for the SBGT system, the inspectors concluded that the finding was of very low safety significance. |
| Site: | Monticello  |
|---|---|
| Report | IR 05000263/2009004 Section 4OA3 |
| Date counted | Sep 30, 2009 (2009Q3) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | J Bozga J Corujo-Sandin K Riemer C Brown S Thomas L Haeg |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
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Finding - Monticello - IR 05000263/2009004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Monticello) @ 2009Q3
Self-Identified List (Monticello)
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