05000346/FIN-2009004-03
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | |
| Description | The inspectors identified an unresolved item (URI) regarding the as-found testing requirements associated with the gaskets used on the Fuel Transfer Tube Blind Flanges. Specifically, the requirement to conduct as-found testing was removed from the TS; however, shortly after the TS modification was implemented, the licensee modified the fitting which called into question the basis for the NRC granting the TS change. The inspectors reviewed license bases and amendment documents to verify that the fuel transfer tube blind flange gaskets were as described in TS and UFSAR, as part of the review of CR 08-32482, dated December 2, 2008. During this review, the inspectors identified that the licensee submitted a License Amendment Request, dated July 26, 1999, requesting the NRC to eliminate As-Found testing of the fuel transfer tube blind flange assemblies. In License Amendment 240, the Safety Evaluation Report states The staff has considered the ALARA and industrial safety concerns that the licensee has described, and based on these concerns, the 24 Enclosure excellent testing history of these flanges, and the continuation of the 30-month testing frequency, the staff finds that the proposed exception for the fuel transfer tube blind flanges is justified and acceptable. In Equipment Equivalency Review (EER) 60-0003-070, dated November 12, 1999, the licensee proposed a change to modify the gaskets used in the fuel transfer tube blind flange assemblies. While it is unclear as to when the changes were actually implemented, the EER was finalized on May 9, 2000, and the Investigation Summary Section of CR 08-33846 stated that the EER proposals could be implemented in 2002. The inspectors noted that during the time the licensee asked for the amendment to eliminate as-found testing, the licensee also changed the gasket arrangement and geometry in accordance with EER 60-0003-070. In the safety screening, the licensee noted no impact on UFSAR or TS; however, the inspectors noted that the licensee did review the section of the TS where the bases for as-found testing was documented (TS 6.16). The inspectors were concerned that the as-found testing requirement was eliminated based on a condition that no longer existed, i.e., because the gasket material and configuration was changed, the excellent testing history of these flanges was no longer supported. This issue is considered an Unresolved Item (URI 05000346/2009004-03) pending further review of maintenance records, confirmation of actual installation, and the license bases |
| Site: | Davis Besse  |
|---|---|
| Report | IR 05000346/2009004 Section 4OA5 |
| Date counted | Sep 30, 2009 (2009Q3) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | J Rutkowski T Go A Wilson J Bozga J Camerona Bolanda Shaikh B Sherbin D Mas L Jones N Valos R Langstaff S Kobylarz |
| INPO aspect | |
| ' | |
Finding - Davis Besse - IR 05000346/2009004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Davis Besse) @ 2009Q3
Self-Identified List (Davis Besse)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||