05000305/FIN-2009003-01
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Finding | |
|---|---|
| Title | Emergency Diesel Generator Fuel Oil Storage and Day Tank Vent Line Tornado Qualification |
| Description | The inspectors identified an unresolved item (URI) relating to the tornado missile qualification of the EDG fuel oil storage and day tank vent lines. During a high wind/tornado seasonal readiness preparations inspection, the inspectors found that the EDG fuel oil storage and day tanks were not missile protected as required by the licensees USAR. The inspectors reviewed the licensees operability evaluation for the vent lines and found that the licensee was using the TORMIS methodology to justify operability until it completed a modification to correct the deficiency. The TORMIS methodology was a probabilistic approach and the inspectors questioned why it was allowable to use this method without an amendment because Regulatory Issue Summary (RIS) 2005-20, Revision to NRC Inspection Manual Part9900 Technical Guidance, Operability Determinations & Functionality Assessments for Resolution of Degraded or Nonconforming Conditions Adverse to Quality or Safety, specifically stated that probability could not be used to justify operability. The licensee believed that TORMIS could be used as an alternative analytical methodology because the NRC documented the acceptability of the method in the NRC Safety Evaluation of October 26, 1983. The inspectors reviewed the 1983 safety evaluation, and RIS 2008-14, Use of TORMIS Computer Code for Assessment of Tornado Missile Protection. Regulatory Issue Summary 2008-14 stated that the initial use of TORMIS methodology required a license amendment, but did not discuss the use of TORMIS inoperability. This issue is considered unresolved pending an agency decision on whether the use of the TORMIS methodology is appropriate in operability evaluations without having a specific amendment for the use of TORMIS (URI 05000305/2009003-01) |
| Site: | Kewaunee  |
|---|---|
| Report | IR 05000305/2009003 Section 1R01 |
| Date counted | Jun 30, 2009 (2009Q2) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.01 |
| Inspectors (proximate) | J Cassidy T Bilik J Neurauter M Kunowski S Burton S Bakhsh S Atwater V Meghani K Barclay J Pearson M Learn E Love E Sanchez-Santiagom Munirj Cassidy T Bilik M Kunowski S Burton K Barclaya Dahburj Jandovitz M Kunowski R Krsek K Barclay R Edwardsm Kunowskir Krsek K Barclay P Cardona-Morales C Zoia R Winter J Jandovitz J Cassidy D Reeser M Phalen M Bielby D Passehl |
| INPO aspect | |
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Finding - Kewaunee - IR 05000305/2009003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Kewaunee) @ 2009Q2
Self-Identified List (Kewaunee)
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