05000247/FIN-2011004-02

Finding

Title

Marginally Designed Fuse Results in Fuse Failure and lnoperability of the Refueling Water Storage Tank

Description

The inspectors identified a Green NCV of 10 CFR 50, Appendix B, Criterion Ill, Design Control, because Entergy personnel did not establish measures to assure that the design basis for sizing of a fuse was adequate and correctly translated into specifications, drawings, procedures, and instructions. Specifically, between November 29, 2005 and September 13, 2010, the fuse for four control room annuciator panels SASC was marginally sized which resulted in fatigue-induced fuse failure, associated loss of lighting to the annunciator panels, the loss of the refueling water storage tank (RWST) low low level alarms, and the inoperability of the RWST. Entergy personnel immediately replaced the fuse. This issue was entered into Entergy's CAP as CR-IP2-201 0-5713 and CR-IP2-2011-2967. This finding is more than minor because it is associated with the design control attribute of the Mitigating Systems cornerstone and adversely affected the objective to ensure the reliability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). Specifically, the loss of the RWST low low level alarms impacts an alert function relied on by operations personnel to swap the suction of the safety injection pumps from the RWST to the containment sump during accident conditions. 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 was related to a design or qualification deficiency confirmed to result in a loss of operability of the RWST low low level alarms; however, the finding did not represent a loss of safety system function because RWST level indication was available via redundant level instruments on the control room instrument panel that operators also normally rely on and are trained to use. Also the finding did not screen as potentially risk significant due to external initiating events. The finding has a crosscutting aspect in the area of problem identification and resolution associated with the corrective action program attribute because Entergy personnel did not thoroughly evaluate problems associated with the fuse for control room annunciator panels SA-SC, such that the resolution address causes and extent of conditions, as necessary. This includes properly classifying, prioritizing, and evaluating for operability and reportability conditions adverse to quality.

02
Site:	Indian Point
Report	IR 05000247/2011004 Section 4OA3
Date counted	Sep 30, 2011 (2011Q3)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71153
Inspectors (proximate)	J Noggle M Catts M Jennerich O Masnyk-Bailey P Finney S Barr S Hammann S Mccarver T O'Hara
CCA	P.2, Evaluation
INPO aspect	PI.2
'
v • d • e

Finding - Indian Point - IR 05000247/2011004

8(0)1(0)2(3)3(4)4(2)5(4)7(1)8(0)9(0)10(1)201(0)403(0)404(3)405(0)11(0)2(4)3(3)4(0)5(0)9(0)10(2)9(3)

IR 05000247/2011004: 1 2

Finding List (Indian Point) @ 2011Q3

CCA Matrix: 2011Q3

	Q	CCA	Title
05000286/FIN-2010005-03	2010Q4		Failure of the Offsite Notification Procedure to Meet the Requirements of the Site Emergency Plan
05000247/FIN-2010005-01	2010Q4	P.3	Inadequate Compensatory Measures for Out of Service Plant Vent Process Radiation Monitor
05000247/FIN-2010005-08	2010Q4		Failure of Offsite Notification Procedure to Meet the Requirements of the Site Emergency Plan
05000247/FIN-2010005-07	2010Q4	H.8	Failure to Staff the Site TSC and OSC Within 60 Minutes of an Alert Emergency Declaration
05000247/FIN-2010005-09	2010Q4	H.12	Failure to Meet TS Oversight Requirement
05000247/FIN-2010005-06	2010Q4		Inadequate Main Boiler Feed Pump Speed Controller Setting
05000247/FIN-2010005-05	2010Q4		Failure to lmplement the Experience and Qualification Requirements of the Quality Assurance Program
05000247/FIN-2010005-04	2010Q4	H.13	Failure to Perform Required Quality Control lnspections
05000247/FIN-2010005-03	2010Q4	H.5	Inadequate Work Coordination Relative to Reactor Cavity Liner Repair That Resulted in Additional Unplanned Collective Exposure
05000247/FIN-2010005-02	2010Q4	H.5	Inadequate Work Planning Control Relative to Regenerative Heat Exchanger Permanent Shielding Modification That Resulted in Additional Unplanned Collective Exposure
05000286/FIN-2010005-02	2010Q4		Failure to lmplement the Experience and Qualification Requirements of the Quality Assurance Program
05000286/FIN-2010005-01	2010Q4	P.2	Repeated Control Room Air Conditioner Gasket Failures
05000286/FIN-2010009-01	2010Q4		Inadequate Design Control of Service Water Strainer Room Flood Barrier
05000247/FIN-2011002-01	2011Q1		Main Steam System Configuration Control Procedure Not Adequate to Ensure Closure of MS-55D
05000247/FIN-2011002-02	2011Q1		Notification Process for State/Local Authorities During a Simulator Scenario
05000286/FIN-2011002-04	2011Q1	P.1	Inadequate Application of Sealant Resulted in Drain Blockage for the Turbine-Driven Auxiliary Feedwater Pump
05000286/FIN-2011002-03	2011Q1	H.5	Lifting of 32 ABFP Steam Supply Relief Valve
05000286/FIN-2011002-01	2011Q1	H.8	Entergy Personnel Did Not Evaluate and Monitor a Thermal Barrier Boric Acid Leak
05000247/FIN-2011002-03	2011Q1	P.1	Entergy Personnel Did Not Identify a Leak on the 25 Service Water Pump Piping
05000286/FIN-2011002-02	2011Q1		Failure to Submit an LER for a Condition Prohibited By TS Associated With 31 Battery Charger Inoperability
05000286/FIN-2011008-01	2011Q2	P.2	lnappropriate Interim Compensatory Measure for Service Water Strainer Backwash Function
05000286/FIN-2011003-01	2011Q2	H.2	Inadequate Procedure and Procedural Compliance for 33 Inverter Overhaul
05000247/FIN-2011003-04	2011Q2	H.14	Inaccurate 21 Static Inverter AC Output Voltmeter
05000247/FIN-2011003-03	2011Q2	P.2	Inadequate Operability Evaluation for Degraded Pressurizer Modulating Heater Group Controller
05000247/FIN-2011003-02	2011Q2	H.8	Inadequate Monitoring of Maintenance Rule In-Scope Service Water Pump and Circulating Water Pump Bay Structures
05000247/FIN-2011003-01	2011Q2	H.10	Entergy Did Not Identify and Correct a Performance Deficiency During an Emergency Preparedness Drill
05000247/FIN-2011004-01	2011Q3		Water Intrusion in the 480 Volt Room During Hurricane Irene
05000286/FIN-2011010-02	2011Q3	P.3	Inadequate Corrective Action for Degraded EDG SW Piping
05000286/FIN-2011010-01	2011Q3	H.5	Procedural Requirements of Engineering Change Process Not Implemented
05000247/FIN-2011004-02	2011Q3	P.2	Marginally Designed Fuse Results in Fuse Failure and lnoperability of the Refueling Water Storage Tank

Self-Identified List (Indian Point)

	Q	Title
05000247/FIN-2010005-10	2010Q4	Licensee-Identified Violation
05000247/FIN-2010005-11	2010Q4	Licensee-Identified Violation
05000286/FIN-2010005-04	2010Q4	Licensee-Identified Violation
05000247/FIN-2010402-01	2010Q4	Licensee-Identified Violation
05000286/FIN-2011003-02	2011Q2	Licensee-Identified Violation
05000286/FIN-2011003-03	2011Q2	Licensee-Identified Violation

[Indian Point Findings full list]

05000247/FIN-2011004-02

Navigation menu

Search