05000282/FIN-2011002-04
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Finding | |
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| Title | Evaluation of Equipment Stored near Safety-Related Equipment |
| Description | The inspectors identified an Unresolved Item (URI) concerning the evaluation of scaffolding stored adjacent to safety-related equipment in the auxiliary building. On February 17, 2011, the inspectors performed a walkdown of the auxiliary building 715 elevation. During the walkdown, the inspectors noted a large amount of scaffolding in a room designated as the SVC EQUIP STG AREA. The inspectors raised a concern that the scaffold equipment was in the vicinity of electrical equipment designated as safety related via orange or green color coding. Specifically, the inspectors questioned whether the scaffolding had been evaluated for movement during a seismic event such that the resulting scaffold movement did not have a detrimental effect on the adjacent safety-related equipment. The inspectors communicated this concern to the licensee and CAP 1272888 was generated to document the condition. The licensees engineering staff initially believed that all of the auxiliary building scaffold storage areas had been previously evaluated. However, the licensee was unable to find these evaluations. As a result, engineering personnel walked down the storage area in question and performed a calculation to determine whether the steel conduit, and cables inside, would be damaged as a result of scaffold movement due to a seismic event. The calculation concluded that, although the conduit would deform, there was reasonable expectation the cable inside would not crush and cutting of the cables/ insulation would be precluded, since the conduit deformation would not be a knife-edge type failure. In addition to this calculation, the licensee also constructed a metal barrier between the scaffold material and the adjacent safety-related equipment. At the conclusion of the inspection period, the licensee was in the process reconstituting the evaluations for the remaining auxiliary building scaffold storage areas. The licensee modified CAP 1272888 to capture this action, which was scheduled for completion in mid-April 2011. As a result, this item was considered to be unresolved pending a review of the licensees engineering evaluations (URI 05000282/2011002-04; 05000306/2011002-04; Evaluation of Equipment Stored near Safety-Related Equipment). |
| Site: | Prairie Island  |
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| Report | IR 05000282/2011002 Section 4OA5 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | J Jandovitz M Mitchell C Brown M Phalen K Stoedter D Betancourt J Corujo-Sandin E Sanchez N Feliz-Adorno S Lynch S Shahn Feliz-Adornor Langstaff K Stoedter L Kozak |
| INPO aspect | |
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Finding - Prairie Island - IR 05000282/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Prairie Island) @ 2011Q1
Self-Identified List (Prairie Island)
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