05000336/FIN-2009005-01: Difference between revisions
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| CCA = N/A for ROP | | CCA = N/A for ROP | ||
| INPO aspect = | | INPO aspect = | ||
| description = The inspectors identified a Green, non-cited violation (NCV) of Millstone PowerStation Technical Specification (TS) surveillance requirement 4.3.3.8 for Dominion's failure to perform a channel calibration of the Unit 2 Inadequate Core Cooling Monitoring System (ICCMS) every 18 months. Dominion entered the issue into their corrective action program and concluded that the ICCMS was operable. Dominion performed a risk assessment of the missed surveillance in accordance with TS 4.0.3, and determined that the completion of the surveillance could be delayed up to the 18 month surveillance interval without a significant increase in risk. This finding was more than minor because it was associated with the Procedure Quality attribute of the Barrier Integrity cornerstone, and affected the cornerstone objective of providing reasonable assurance that physical design barriers (fuel cladding) protect the public from radionuclide releases caused by accidents or events. Specifically, in 1997, Dominion incorrectly revised surveillance procedure SP 2407A so that it no longer met the requirements of TS surveillance requirement 4.3.3.8. The inspectors determined the finding was of very low safety significance (Green) because it was associated with a fuel barrier of the Barrier Integrity cornerstone. This finding did not have a cross-cutting aspect because the performance deficiency occurred in 1997, and was not indicative of current performance | | description = The inspectors identified a Green, non-cited violation (NCV) of Millstone PowerStation Technical Specification (TS) surveillance requirement 4.3.3.8 for Dominion\'s failure to perform a channel calibration of the Unit 2 Inadequate Core Cooling Monitoring System (ICCMS) every 18 months. Dominion entered the issue into their corrective action program and concluded that the ICCMS was operable. Dominion performed a risk assessment of the missed surveillance in accordance with TS 4.0.3, and determined that the completion of the surveillance could be delayed up to the 18 month surveillance interval without a significant increase in risk. This finding was more than minor because it was associated with the Procedure Quality attribute of the Barrier Integrity cornerstone, and affected the cornerstone objective of providing reasonable assurance that physical design barriers (fuel cladding) protect the public from radionuclide releases caused by accidents or events. Specifically, in 1997, Dominion incorrectly revised surveillance procedure SP 2407A so that it no longer met the requirements of TS surveillance requirement 4.3.3.8. The inspectors determined the finding was of very low safety significance (Green) because it was associated with a fuel barrier of the Barrier Integrity cornerstone. This finding did not have a cross-cutting aspect because the performance deficiency occurred in 1997, and was not indicative of current performance | ||
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Latest revision as of 19:38, 20 February 2018
| Site: | Millstone  |
|---|---|
| Report | IR 05000336/2009005 Section 1R15 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | T Moslak D Silk G Johnson D Jackson M Modes B Haagensen J Krafty S Shaffer |
| INPO aspect | |
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