05000247/FIN-2011003-03
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Finding | |
|---|---|
| Title | Inadequate Operability Evaluation for Degraded Pressurizer Modulating Heater Group Controller |
| Description | The inspectors identified a Green NCV of 10 CFR 50, Appendix S, Criterion V Instructions, Procedures, and Drawings, because Entergy personnel did not adequately implement Procedure EN-OP-104 Operability Determination Process, to assess the operability of the pressurizer modulating heater group. Specifically, Entergy personnel did not adequately evaluate a degraded condition identified with the modulating heater group controller and the impact on the modulating heater group operability. This resulted in the modulating heater being inoperable between August 18, 2010 and January 19, 2011, and an unplanned entry into a Technical Specification (TS) limiting condition for operation (LCO) 3.4.9, Pressurizer. This issued was entered into Entergy\'s corrective action program (CAP) as CR-IP2-2011-3493. This finding is more than minor because it is associated with the equipment performance attribute of the Initiating Events cornerstone and affects the cornerstone objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. Specifically, the inadequate procedure implementation resulted in the pressurizer modulating heater group being inoperable for approximately five months and an unplanned entry into a TS LCO. Using IMC 0609.04, Phase 1 - Initial Screening and Characterization of Findings, the inspectors determined this finding was of very low safety significance (Green) because the finding did not contribute to both the likelihood of a reactor trip and the likelihood that mitigation equipment or functions will not be available. The finding has a cross-cutting aspect in the area of problem identification and resolution associated with the CAP attribute because Entergy personnel did not thoroughly evaluate the problems associated with the pressurizer modulating heater group controller such that the resolutions address causes and extent of conditions, as necessary. This includes properly classifying, prioritizing, and evaluating for operability and reportability conditions adverse to quality. |
| Site: | Indian Point  |
|---|---|
| Report | IR 05000247/2011003 Section 4OA7 |
| Date counted | Jun 30, 2011 (2011Q2) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | S Barr S Mccarver J Lilliendahl K Mangan M Catts M Gray O Ayegbusi |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Indian Point - IR 05000247/2011003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Indian Point) @ 2011Q2
Self-Identified List (Indian Point)
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