05000289/FIN-2012002-05

Finding

Title

Licensee-Identified Violation

Description

TMI-1 fire hazard analysis requires two valves to achieve and maintain cold shutdown condition, including remote shutdown via local manual operation, one valve which is the B decay heat cooler shell bypass (DC-V-65B). On March 14, 2012 during valve diagnostic testing, Exelon discovered DC-V-65B manual handwheel drivegear was detached from the valve stem and had been so since identified on April 19, 2006. Contrary to license condition 2.C.(4) compensatory measures were not established for the loss of DC-V-65B to be operated manually and to perform its credited function. The cause of this violation is the failure to correct a degraded condition in a timely manner commensurate with its safety significance. Exelon entered this into the CAP as IR 1341582 and replaced the actuator on April 3, 2012. The inspectors determined that the finding was of very low safety significance (Green) in accordance with IMC 0609, Appendix F, Fire Protection Significance Determination Process, as a cold shutdown category with moderate degradation

05
Site:	Three Mile Island
Report	IR 05000289/2012002 Section 4OA7
Date counted	Mar 31, 2012 (2012Q1)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	Licensee-identified
Inspection Procedure:
Inspectors (proximate)	T Moslak D Werkheiser G Hunegs C Cahill C Crisden J Heinly D Everhart M Orr B Cook
INPO aspect
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v • d • e

Finding - Three Mile Island - IR 05000289/2012002

12(1)12(0)12(1)12(1)12(0)1(0)2(5)3(0)4(2)5(3)6(0)7(5)8(1)12(1)201(0)301(0)403(2)501(0)9(0)12(1)12(1)12(1)12(1)

IR 05000289/2012002: 1 2 3 4 5

Finding List (Three Mile Island) @ 2012Q1

CCA Matrix: 2012Q1

	Q	CCA	Title
05000289/FIN-2011010-01	2011Q3		Security
05000289/FIN-2011503-01	2011Q3		(Traditional Enforcement) Changes to EAL Basis Decreased the Effectiveness of the Plan without Prior NRC Approval
05000289/FIN-2011503-02	2011Q3		Changes to EAL Basis Decreased the Effectiveness of the Plan without Prior NRC Approval
05000289/FIN-2011005-02	2011Q4	H.5	Inadequate Control of Reactor Coolant Let-down And Clean-up to Minimize Outage Occupationa Radiation Dose
05000289/FIN-2011005-05	2011Q4	P.1	Failure to ldentify a Non-Conservative Technical Specification following Revision to River Stage Discharge Analysis
05000289/FIN-2011005-03	2011Q4		Adequacy of Seismic Gap Flood Seal
05000289/FIN-2011005-04	2011Q4		Adequacy of Flood Protection without Consideration of Wind Generated Wave Activity
05000289/FIN-2011005-01	2011Q4		Inspect and Disposition Leakage Event from BRCP Flange from 1R19
05000289/FIN-2012002-01	2012Q1	H.7	Failure to Implement Fire Protection Compensatory Actions for Out-of-Service Appendix R Heat Exchanger
05000289/FIN-2012002-02	2012Q1	H.2	Inadequate Inspection of RCP Flanges
05000289/FIN-2012002-03	2012Q1	P.2	Inadequate System Monitoring Results in Multiple IA-P-4 Trips
05000289/FIN-2012002-04	2012Q1	H.5	Failure to Perform an Adequate Maintenance Risk Evaluation for DH-V-3 Planned Maintenance
05000289/FIN-2012007-01	2012Q1		Nonconservative Differential Pressure Value used in DHRyLPI Motor Operated Valves Design Analysis
05000289/FIN-2012007-02	2012Q1		Inadequate TOL Sizing Evaluation for Jogging/Throttling Valves
05000289/FIN-2012007-03	2012Q1	H.7	lnadequate Design Control for Battery Sizing Calculation
05000289/FIN-2012007-04	2012Q1		Inadequate Design and Maintenance of SBO Diesel Generator Battery

Self-Identified List (Three Mile Island)

	Q	Title
05000289/FIN-2012002-05	2012Q1	Licensee-Identified Violation
05000289/FIN-2012007-05	2012Q1	Licensee-Identified Violation

[Three Mile Island Findings full list]

05000289/FIN-2012002-05

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