05000482/FIN-2011002-05

Finding

Title

Inadequate Calculation for Vital Switchgear Cooling

Description

The inspectors identified a noncited violation of 10 CFR Part 50, Appendix B, Criterion III, involving an inadequate calculation supporting vital switchgear room temperatures with only one vital switchgear cooler operable. The licensee entered this issue in the corrective action program and will develop corrective actions as part of Condition Reports 27276, 28252, and 31452. The inspectors considered the inadequate heat loads and assumptions used in calculation GK-06-W to be a performance deficiency. The performance deficiency is more than minor, and therefore a finding, because it impacted with the equipment performance attribute of the Mitigating Systems Cornerstone and it affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events. Using Inspection Manual Chapter 0609.04, Phase 1 Initial Screening and Characterization of Findings, the inspectors screened the finding to Green because the additional temperatures would not have caused the loss of functionality of vital switchgear or batteries, and it did not screen as potentially risk significant due to a seismic, flooding, or severe weather initiating event. No crosscutting aspects were identified because the supporting documentation was prepared in the late 1990s and was not representative of current licensee performance (Section 1R15).

05
Site:	Wolf Creek
Report	IR 05000482/2011002 Section 1R15
Date counted	Mar 31, 2011 (2011Q1)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.15
Inspectors (proximate)	G Guerra C Smith L Carson G Miller B Tindell C Long C Peabody A Fairbanks D Reinert C Alldredge
INPO aspect
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v • d • e

Finding - Wolf Creek - IR 05000482/2011002

1(0)2(14)3(12)4(9)5(6)6(2)7(6)8(0)9(2)402(0)403(0)25(0)

IR 05000482/2011002: 1 2 3 4 5 6 7 8 9 10 11 12 13 14

Finding List (Wolf Creek) @ 2011Q1

CCA Matrix: 2011Q1

	Q	CCA	Title
05000482/FIN-2010004-02	2010Q3	H.7	Failure to Correct Degraded Vital Switchgear Cooler Wiring
05000482/FIN-2010006-09	2010Q3	P.3	Failure to Translate Design Information into a Procedure
05000482/FIN-2010006-08	2010Q3	P.2	Notice of Unusual Event Due to Loss of Both Emergency Diesel Generators
05000482/FIN-2010006-07	2010Q3	P.1 P.1(a)	Failure to Determine if a Deficiency Existed in the Ultimate Heat Sink
05000482/FIN-2010006-05	2010Q3	P.2	Failure to Perform Adequate Evaluation for Significant Conditions
05000482/FIN-2010006-04	2010Q3	H.7	Failure to Update an Operability Evaluation
05000482/FIN-2010006-03	2010Q3	P.1 P.1(a)	Failure to Adequately Monitor Control Room Deficiencies
05000482/FIN-2010006-02	2010Q3	P.3	Unqualified Scaffolding Erected Near Safety-Related Equipment
05000482/FIN-2010006-01	2010Q3	H.7	Failure to Resolve Degraded Conditions in a Timely Manner
05000482/FIN-2010004-01	2010Q3		Failure to Establish Conditions to Open a Main Steam Isolation Value that Resulted in a Feedwater Isolation
05000482/FIN-2010005-07	2010Q4	P.1	Failure to Have Adequate Procedures for Meteorological Monitoring
05000482/FIN-2010005-05	2010Q4	P.1	Failure to Identify Boric Acid Leak on Instrument Lines to Reactor Coolant System
05000482/FIN-2010005-06	2010Q4	H.12	Failure to Have Procedures to Prevent Draining Radioactive Systems into Nonradioactive Systems
05000482/FIN-2010005-11	2010Q4	H.1	Inadequate Simulation Facility Fidelity
05000482/FIN-2010005-08	2010Q4	P.5	Inadequate Procedures for Establishing Feedwater Preheat
05000482/FIN-2010005-09	2010Q4	P.5	Inadequate Procedures to Ensure Proper Main Feed Pump Speed During Startup
05000482/FIN-2010007-01	2010Q4		Inadequate Design of Component Cooling Water Safety/Nonsafety Isolation
05000482/FIN-2010007-02	2010Q4	H.7	Failure to Perform Tornado Damper Testing
05000482/FIN-2010007-03	2010Q4		Inadequate Auxiliary Feedwater Pump Suction Line Break Analysis and Design
05000482/FIN-2010007-04	2010Q4		Emergency Diesel Generator Specified Rating did not Address Engine Operation at Design Basis Extreme Meteorological Temperature Conditions
05000482/FIN-2010007-05	2010Q4	H.9	Failure to Translate Design Requirements to Operating Procedures for the Transfer of Residual Heat Removal and Containment Spray Suction to the Containment Recirculation Sumps
05000482/FIN-2010005-01	2010Q4	H.14	Failure to Properly Identify and Evaluate Degraded Piping in the Train A Essential Service Water System
05000482/FIN-2010005-02	2010Q4	H.14	Failure to Account for Water Hammer Stresses in Essential Service Water System Calculations
05000482/FIN-2010005-03	2010Q4	H.7	Failure to Maintain Operator Licensing Examination Integrity
05000482/FIN-2010005-04	2010Q4	P.2	Failure to Evaluate Corrosion Mechanism in Accordance with Code Case N513
05000482/FIN-2010005-10	2010Q4	H.7	Inadequate Procedure for Steam Generator Hi-Hi Turbine Trip
05000482/FIN-2010008-04	2010Q4	P.2	Failure to Identify and Correct Inadequate RHR Fill and Vent Procedures
05000482/FIN-2010008-03	2010Q4	P.2	Failure to Perform an Adequate Operability Evaluation
05000482/FIN-2010008-02	2010Q4		Inadequate Procedure for Fill and Vent of the Component Cooling Water System
05000482/FIN-2010008-01	2010Q4	H.14	Failure to Promptly Identify and Correct a Condition Adverse to Quality
05000482/FIN-2011002-11	2011Q1	H.4 H.5	Failure to Follow Radiation Work Permit Instructions
05000482/FIN-2011002-10	2011Q1	H.13	Repetitive Failure to Enter Technical Specifications for Auxiliary Feedwater Suction Valve Testing
05000482/FIN-2011002-09	2011Q1	H.5	Inadequate Clearance Order Disables Power Operated Relief Valve Low temperature Overpressure Function
05000482/FIN-2011002-08	2011Q1	P.3	Inadequate Fill and Vent of Component Cooling Water
05000482/FIN-2011002-07	2011Q1	H.4 H.5	Failure to Verify Ultimate Heat Sink Sedimentation Levels within Design Bases
05000482/FIN-2011002-06	2011Q1	P.2	Failure to Perform an Operability Determination for Degradation of the Fuel Oil Storage Tank
05000482/FIN-2011002-05	2011Q1		Inadequate Calculation for Vital Switchgear Cooling
05000482/FIN-2011002-04	2011Q1	P.2	Failure to Follow 10 CFR 50.65 a(2) for Main Control Board Annunciator Power Supply Failures
05000482/FIN-2011002-03	2011Q1	P.2	Failure to Monitor the Performance of Nonsafety-Related Systems and Components Used in the Plant Emergency Operating Procedures under 10 CFR 50.65 Programs
05000482/FIN-2011002-02	2011Q1	H.5	Inadequate Clearance Order Isolated Cooling to Inservice Safety-Related Equipment
05000482/FIN-2011002-01	2011Q1	H.14	Inadequate Design Control of the Fuel Oil Storage Tank Fill System
05000482/FIN-2011006-01	2011Q1	H.9 H.2(b)	Failure to Trend Emergency Diesel Generator Chemistry Parameters Results in an Unplanned Technical Specification Entry

Self-Identified List (Wolf Creek)

	Q	Title
05000482/FIN-2010004-03	2010Q3	Licensee-Identified Violation
05000482/FIN-2011006-02	2011Q1	N/A
05000482/FIN-2011002-12	2011Q1	Licensee-Identified Violation
05000482/FIN-2011002-13	2011Q1	Licensee-Identified Violation
05000482/FIN-2011002-14	2011Q1	Licensee-Identified Violation

[Wolf Creek Findings full list]

05000482/FIN-2011002-05

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