05000259/FIN-2011002-08
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | Unit 1 Technical Specification 3.3.1.1, Reactor Protection System Instrumentation, required two operable drywell (DW) pressure channels per trip system in Modes 1 and 2, or place the inoperable channel in trip within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />, or be in Mode 3 in 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. Contrary to this, as described in the LER 259/2010-002, the licensee determined that DW pressure instrument 1-PIS-064-56B was inoperable from May 25, 2010 to October 6, 2010, due to accumulated water in the sensing line from improper line slope, without placing the channel in trip or shutting down Unit 1. This violation is not greater than Green because there was no loss of function due to availability of redundant instrumentation. This issue was entered in the licensees CAP as PERs 159710, 219150, 242068 and 279760. |
| Site: | Browns Ferry  |
|---|---|
| Report | IR 05000259/2011002 Section 4OA7 |
| Date counted | Mar 31, 2011 (2011Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | A Nielsen C Dykes C Fletcher C Stancil E Guthrie L Pressley M Coursey P Higgins P Niebaum R Hamilton R Patterson S Walker T Ross |
| INPO aspect | |
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Finding - Browns Ferry - IR 05000259/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Browns Ferry) @ 2011Q1
Self-Identified List (Browns Ferry)
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