05000341/FIN-2011002-04
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | During Refueling Outage 14 in 2010 the licensee performed a walkdown to inventory and validate the debris source term inside the primary containment. The licensee identified drywell insulation in recirculation piping areas that was not the appropriate material for use in that area of the drywell. The types of insulation in the areas potentially affected by a loss-of-coolant accident were evaluated during the ECCS strainer replacement project and associated EDPs in 1998. The min-K insulation was to be replaced with a more acceptable type (NUKON) during the implementation of the EDPs. Ten of the locations containing the min-K insulation were identified following the outage. The licensee indentified the insulation for replacement at the next available drywell opening. The replacement occurred during the January 2011 planned outage. Appendix B, Criteria III of 10 CFR 50, Design Control, states in part The design control measures shall provide for verifying or checking the adequacy of design.... Contrary to the above, from 1998 and prior to January 2011,the licensee did not maintain accurate design information and failed to identify these sections of insulation for replacement in 1998. Because the amount of insulation was small and within the existing available design margin for the ECCS suction strainer debris source term (DC-5979), the strainer was still operable; and the finding was determined to be of very low safety significance. The licensee entered the issue into their corrective action program as CARD 10-32197, Confirmation of insulation type installed in localized recirulation piping areas within the drywell. The finding was determined to be a licensee-identified NCV of 10 CFR 50 Appendix B, Criteria III. |
| Site: | Fermi  |
|---|---|
| Report | IR 05000341/2011002 Section 4OA7 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | M Munir S Sheldon R Morris R Jones J Bozga M Jones T Hartman |
| INPO aspect | |
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Finding - Fermi - IR 05000341/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fermi) @ 2011Q1
Self-Identified List (Fermi)
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