05000237/FIN-2010004-01

Finding

Title

Failure to Address NRC Concerns Regarding a Reactor Building Closed Cooling Water (RBCCW) Line Break in the Unit 3 Reactor Building

Description

During a walkdown of the Unit 2 and Unit 3 reactor buildings the inspectors identified: That there were RBCCW pipes directly above the bermed areas surrounding the safety-related busses 23-1, 24-1, 33-1, and 34-1. If those pipes were to fail the bermed area around the busses would hold water in potentially resulting in the failure of power to all the low pressure ECCS pumps The inspectors identified that on Unit 3 there was only one hole (not several) in the floor inside the bermed area around busses 33-1 and 34-1 and that hole had a one and onehalf inch lip around it which was not notched. This configuration did not appear to be evaluated at the time the SER was written. The licensee performed an evaluation after the inspectors brought this condition to their attention. The review of the licensees evaluation is an unresolved item. (URI 05000237/2010004-01; 05000249/2010004-01)

01
Site:	Dresden
Report	IR 05000237/2010004 Section 1R06
Date counted	Sep 30, 2010 (2010Q3)
Type:	URI:
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.06
Inspectors (proximate)	R Langstaff T Briley T Go A Shaikh B Kemker C Phillips D Lords D Melendez Colon F Ramirez J Cameron J Corujo Sandin M Bielby P Smagacz R Jicklingd Melendez-Colonc Phillips M Ring T Go E Coffman J Draper D Sand
INPO aspect
'
v • d • e

Finding - Dresden - IR 05000237/2010004

8(0)2(9)3(9)4(4)5(4)6(0)7(4)201(0)202(0)301(0)402(1)403(0)501(0)502(2)9(0)10(1)31(0)

IR 05000237/2010004: 1 2 3 4

Finding List (Dresden) @ 2010Q3

CCA Matrix: 2010Q3

	Q	CCA	Title
05000237/FIN-2009005-08	2009Q4	H.7	Procedural Deficiency Causing a Pressure Pulse Resulting in a Reactor Water Level Low-Low Group 1 Isolation Signal and Unit 3 Reactor Scram
05000237/FIN-2009005-04	2009Q4		2/3 Emergency Diesel Generator (EDG) Overvoltage During Division I Undervoltage Surveillance
05000237/FIN-2009007-04	2009Q4		Potential Non-Conservative Fatigue Analysis
05000237/FIN-2009007-01	2009Q4	H.2	Ventilation System One-Time Inspection Results
05000237/FIN-2009007-02	2009Q4		Unit 2 SBLC Tank Thickness Calculation Errors
05000237/FIN-2009007-03	2009Q4	H.7	Failure to Inspect the Non-EQ Electrical Connections Subject to Localized Adverse Environment
05000237/FIN-2009005-01	2009Q4	H.11 H.12	Operating Personnel Incorrectly Placed Clearance Tags
05000237/FIN-2009005-02	2009Q4	H.12	NRC Inspector-Identified Control Room Alarm Isolation Valve Out-of-Position
05000237/FIN-2009005-03	2009Q4	H.4 H.5	Preconditioning the Unit 2 Emergency Diesel Generator Prior to Performing TS Surveillance Requirements
05000237/FIN-2009005-05	2009Q4	H.11 H.12	Failure to Follow the Master Refueling Procedure During Movement of Fuel Assembly JLU569
05000237/FIN-2009005-09	2009Q4	H.8	Failure to Ensure a Safety-Related Plug was Ordered and Installed in the 2/3 Emergency Diesel Generator Turbo Lube Oil Y Strainer
05000237/FIN-2009005-07	2009Q4		Changes to EAL HU6 Potentially Decreased the Effectiveness of the Plans without Prior NRC Approval
05000237/FIN-2009005-06	2009Q4		Mispositioning of a Unit 3 Control Rod at Power
05000237/FIN-2009005-10	2009Q4		Electro-Hydraulic Control (EHC) Fluid Leaking From Stop Valve 3-5699-MSV4-FA Resulting in Forced Outage D3F49
05000237/FIN-2010002-04	2010Q1		Significance of Potentially Submerged Safety and Nonsafetyrelated Low Voltage Power and Control Power Cables
05000237/FIN-2010002-03	2010Q1	H.1 H.2(d)	Failure to Meet Regulatory Commitment to Maintain Contingency Plans for Post-Accident Sampling
05000237/FIN-2010002-05	2010Q1	P.5 P.2(b)	Electro-Hydraulic Control (EHC) Fluid Leaking From Stop Valve 3-5699-MSV4-FA Resulting in Forced Outage D3F49
05000237/FIN-2010002-01	2010Q1	H.7	Failure to Record the Identity of Personnel Performing Post-Maintenance Tests
05000237/FIN-2010002-02	2010Q1	H.14	Failure to Follow Technical Specification 5.5.4 Implementing Procedure
05000237/FIN-2010003-07	2010Q2		2/3 Emergency Diesel Generator (EDG) Overvoltage during Division I Undervoltage
05000237/FIN-2010003-06	2010Q2		Failure To Perform An Adequate Inspection of Circulating Water Valve 3-4402-C
05000237/FIN-2010003-05	2010Q2	P.3	Failure to Provide An Adequate Procedure for Several Instrument Maintenance Surveillance Tests
05000237/FIN-2010003-04	2010Q2		Failure to Monitor Unit 3 Drywell Temperature
05000237/FIN-2010003-02	2010Q2		LPCI Room Heat-up Calculation Deficiencies
05000237/FIN-2010003-01	2010Q2		High Pressure Coolant Injection (HPCI) Booster Pump Bearing Oil Levels
05000237/FIN-2010007-03	2010Q2		Failure to Perform Adequate Testing to Confirm Acceptable Fast Bus Transfer Time
05000237/FIN-2010007-02	2010Q2	H.14	Improper Reclassification of LPCI Pump Mechanical Seals
05000237/FIN-2010007-01	2010Q2	H.14	Failure to Establish Heat Exchanger Inspection Procedures Appropriate for the Circumstances
05000237/FIN-2010003-03	2010Q2		Undocumented Technical Basis for change to EOP ATWS Mitigation Strategy
05000237/FIN-2010003-08	2010Q2		Potential Safety Significance of Free-Standing Stack Configuration during MPC Transfer from HI-TRAC Transfer Cask into HI-STORM Storage Cask
05000237/FIN-2010004-04	2010Q3		Failure to Identify and Correct Test Procedures to Assess the As-Found Trip Setpoint for Pressure Switches that Satisfy Technical Specification Functions
05000237/FIN-2010004-03	2010Q3	H.13	Installation of Nonconforming Material Into a Safety-Related System
05000237/FIN-2010004-01	2010Q3		Failure to Address NRC Concerns Regarding a Reactor Building Closed Cooling Water (RBCCW) Line Break in the Unit 3 Reactor Building
05000237/FIN-2010004-02	2010Q3		Failure to Seal Holes in the Floor Above the Emergency Core Cooling System (ECCS) Corner Rooms

Self-Identified List (Dresden)

	Q	Title
05000237/FIN-2009005-11	2009Q4	Licensee-Identified Violation
05000237/FIN-2010002-06	2010Q1	Licensee-Identified Violation
05000237/FIN-2010002-09	2010Q1	Licensee-Identified Violation
05000237/FIN-2010402-01	2010Q1	Security
05000237/FIN-2010002-07	2010Q1	Licensee-Identified Violation
05000237/FIN-2010002-08	2010Q1	Licensee-Identified Violation
05000237/FIN-2010007-04	2010Q2	Licensee-Identified Violation
05000237/FIN-2010003-09	2010Q2	Licensee-Identified Violation

[Dresden Findings full list]

05000237/FIN-2010004-01

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