05000305/FIN-2009005-08
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Finding | |
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| Title | |
| Description | The inspectors reviewed changes implemented to the Kewaunee PowerStation EALs and EAL technical basis document. In Revision 5 to the EAL Technical Basis, licensee staff made changes by adding text regarding RCS leakage in order to clarify if leakage from the letdown or charging systems would lead to an emergency declaration. The change implies that leakage from the letdown or charging systems will no longer lead to an emergency declaration and this may potentially decrease the effectiveness of the emergency plan. Kewaunee Power Station EAL Technical Basis, Revision 4, for EALs SU5and CU1 provides the basis for declaring an Unusual Event due to RCS leakage. Kewaunee Power Station staff added the following text to Revision 5 of this document: Per Technical Specification 3.1.d.1 Bases, components that contain or transport the coolant to and from the reactor core make up the RCS. Component joints are made by welding, bolting, rolling, or pressure loading, and valves isolate connecting systems from the RCS. Therefore, a leak identified from Letdown or Charging would NOT constitute a declaration per this EAL. The inspectors reviewed EAL Technical Basis, Revision 4, and noted that leakage from the charging or letdown system appeared to have been considered RCS leakage. Therefore, if the leakage coming from these systems meets the thresholds given in the EALs, it appears that it would lead to an emergency declaration. However, the change that was added to the EAL technical basis document in Revision 5, as written, would exclude leakage coming from the charging or letdown system from being considered as RCS leakage. Therefore, it would appear that leakage from the charging or letdown systems would no longer lead to an emergency declaration. Pending further review and verification by NRC staff to determine if the change to the EAL Technical Basis Document was a performance deficiency because it decreased the effectiveness of the Emergency Plan, this issue was considered an Unresolved Item (URI 05000305/2009005-08) |
| Site: | Kewaunee  |
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| Report | IR 05000305/2009005 Section 1EP4 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | URI: |
| cornerstone | Emergency Prep |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71114.04 |
| Inspectors (proximate) | D Mcneil R Ruiz J Cassidy T Bilik M Phalen M Garza D Chyu M Kunowski S Burton K Barclay J Bozga M Jonesr Winterj Jandovitz J Cassidy M Kunowski R Krsek K Barclay P Cardona-Morales |
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Finding - Kewaunee - IR 05000305/2009005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Kewaunee) @ 2009Q4
Self-Identified List (Kewaunee)
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