05000282/FIN-2012005-07
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Finding | |
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Title | Licensee-Identified Violation |
Description | Title 10 CFR 50.65(a)(iv) requires, in part, that licensees must properly assess and manage risk. When the Unit 1 reactor was in a shut-down condition, the licensee implemented 5 AWI 15.6.1, Shutdown Safety Assessment, to assess and manage the risk as required by 10 CFR 50.65(a)(iv). Table 2 of 5 AWI 15.6.1 stated that no credit was to be given for the function/availability of the containment release barriers during the movement of heavy loads over irradiated fuel. Contrary to the above, on November 6, 2012, the licensee failed to properly assess the risk associated with moving the Unit 1 reactor vessel head. Specifically, operations personnel allowed credit to be given for the functionality/availability of multiple containment release barriers during the movement of the Unit 1 reactor vessel head (a heavy load) over irradiated fuel. The inspectors assessed the significance of this finding using Checklist 3 of IMC 0609, Appendix G, Attachment 1, Shut-down Operations Significance Determination Process Phase 1 Operational Checklists for Both PWRs and BWRs. The inspectors determined that this finding was of very low safety significance (Green) because the licensee met the containment control guidelines described in Section IV of Checklist 3 while moving the heavy load. The licensee documented this condition as CAP 1358291. Corrective actions for this issue included revising the shutdown safety assessment document, providing training to operations personnel that perform the shutdown safety assessment activities, and revising 5 AWI 15.6.1 to provide additional clarification regarding containment closure credit during the movement of heavy loads over irradiated fuel. |
Site: | Prairie Island |
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Report | IR 05000282/2012005 Section 4OA7 |
Date counted | Dec 31, 2012 (2012Q4) |
Type: | NCV: Green |
cornerstone | Mitigating Systems |
Identified by: | Licensee-identified |
Inspection Procedure: | |
Inspectors (proximate) | D Mcneil K Riemer T Bilik C Moore M Phalen R Baker K Stoedter D Passehl J Laughlin K Barclay M Jones M Learn J Beavers D Oliver |
INPO aspect | |
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Finding - Prairie Island - IR 05000282/2012005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Prairie Island) @ 2012Q4
Self-Identified List (Prairie Island)
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