05000482/FIN-2009005-14

Finding

Title

Failure to Identify Inoperable P-6 Interlock and Intermediate Range Detector

Description

On December 30, 2009, the inspectors identified a noncited violation of Technical Specification Table 3.3.1-1, Function 18.a, when Wolf Creek restarted on May 18, 2005. During a reactor shutdown on October 7, 2006, intermediate range neutron detector Nuclear Instrument-36 did not decrease below 6E -11 amps and energize source range detector Nuclear Instrument-32. The detector was not replaced until Refueling Outage 16 in March 2008. The licensee entered this issue in their corrective action program as Condition Report 22450 The inspectors determined that the failure to ensure that the P-6 interlock was operable per the technical specification as defined in the bases was a performance deficiency. The finding was more than minor because it was associated with the configuration control (reactivity control) attribute of the Barrier Integrity Cornerstone, and it affected the cornerstone objective to provide reasonable assurance that physical design barriers (fuel cladding, reactor coolant system, and containment) protect the public from radionuclide releases caused by accidents or events. The inspectors evaluated the significance of this finding using Phase 1 of Inspection Manual Chapter 0609.04, and determined that the finding screened to Green because the P-6 interlock only affected the fuel barrier (Section 4OA2). This finding was not assigned a crosscutting aspect because the cause was not representative of current performance

14
Site:	Wolf Creek
Report	IR 05000482/2009005 Section 4OA2
Date counted	Dec 31, 2009 (2009Q4)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71152
Inspectors (proximate)	G Vasquez J Drake P Jayroe R Kopriva S Alferink A Fairbanks C Alldredge C Cauffman C Long C Peabody D Graves D Loveless G Miller
INPO aspect
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v • d • e

Finding - Wolf Creek - IR 05000482/2009005

1(0)2(9)3(3)4(8)5(18)201(0)301(0)302(1)401(0)402(0)403(1)

IR 05000482/2009005: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Finding List (Wolf Creek) @ 2009Q4

CCA Matrix: 2009Q4

	Q	CCA	Title
05000482/FIN-2009002-01	2009Q1	H.13	Untimely corrective actions result in room temperature below boric acid solubility limit
05000482/FIN-2009002-02	2009Q1	P.1 P.1(a)	Degraded fire barrier for auxiliary feedwater
05000482/FIN-2009002-06	2009Q1	P.2	Unacceptable preconditiong of control rods prior to surveillance testing
05000482/FIN-2009002-08	2009Q1		Inattentive on-duty senior reactor operator
05000482/FIN-2009002-05	2009Q1		Seismic operability of Emergency Diesel Generator A due to overspeed limit switch degradation
05000482/FIN-2009002-03	2009Q1	H.8	Failure to implement foreign material exclusion control procedure for spent fuel pool
05000482/FIN-2009002-04	2009Q1	P.2	Failure to follow 10 CFR 50.65a(2) for containment isolatio valve failures
05000482/FIN-2009002-07	2009Q1	H.14	Failure to correct component cooling water valve closures
05000482/FIN-2009003-01	2009Q2	H.5	Inadequate Testing Equipment Used for Alignment Verification of Emergencey Diesel Lube Oil Piping
05000482/FIN-2009003-02	2009Q2	P.5	Inadequate Fuse Thermography Procedure Resulted in Blown Fuses and Unplanned Reactor Trip
05000482/FIN-2009003-03	2009Q2	P.1	Inadequate Testing Results in P-6 Interlock Failure to Energize Source Range on Reactor Trip
05000482/FIN-2009004-08	2009Q3	H.2(a) H.6	Changes to the Approved Fire Protection Program Without Prior Staff Approval
05000482/FIN-2009006-01	2009Q3	P.2	Failure to Report Conditions Prohibited by Technical Specifications, and Safety System Functional Failures
05000482/FIN-2009004-06	2009Q3	P.2	Performing Prohibited Elective Maintenance on Safety Bus NB02 Channel 4 During Emergency Diesel Generator Maintenance
05000482/FIN-2009004-05	2009Q3	P.3	Use of Nonsafety-Related Power to Ensure Operability of Safety-Related Boric Acid System
05000482/FIN-2009004-04	2009Q3	H.13	Failure to Implement Engineered Safety Features Actuation System Technical Specifications Results in Missed Mode Change
05000482/FIN-2009004-03	2009Q3	P.2	Inadequate Evaluation of Emergency Diesel Generator for Common Cause Failure in the Supporting Essential Service Water System
05000482/FIN-2009004-02	2009Q3	H.4 H.5	Inability to Perform Manual Actions for Risk Assessment
05000482/FIN-2009004-01	2009Q3	P.2	Failure to Log Foreign Material in Spent Fuel Pool After Extent of Condition Evaluation
05000482/FIN-2009006-02	2009Q3	P.2	Inadequate Instructions for Changing Modes of Operation of the Residual Heat Removal system
05000482/FIN-2009004-07	2009Q3	P.2	Failure to Report Conditions that Could have Presented Fulfillment of a Safety Function
05000482/FIN-2009005-03	2009Q4	P.5	Failure to Identify Sources of Boron Leakage
05000482/FIN-2009005-09	2009Q4	H.14	Positive Reactivitiy Addition Prohibited by Technical Specifications while in Mode 2
05000482/FIN-2009005-10	2009Q4	H.8	Failure to Obtain Vendor Data Necessary for Plant Modification
05000482/FIN-2009005-11	2009Q4	P.3	Failure to Correct Vessel Head Vent Path
05000482/FIN-2009005-13	2009Q4	H.11 H.12	Failure to Maintain Administrative Control of Keys to Locked High Radiation Areas
05000482/FIN-2009005-16	2009Q4		Operator Actions disable Curcuit Breaker Coordination and Could Initiate Secondary Fires
05000482/FIN-2009005-14	2009Q4		Failure to Identify Inoperable P-6 Interlock and Intermediate Range Detector
05000482/FIN-2009005-12	2009Q4	H.7	Unevaluated Scaffold Against Component Cooling Water Piping
05000482/FIN-2009005-08	2009Q4	P.2	Inadequate Operability Evaluation of Essential Service Water Pumps
05000482/FIN-2009005-07	2009Q4	H.11 H.12	Failure to Follow Procedures Results in Draining of Emergency Core Cooling System Pump Oil
05000482/FIN-2009005-06	2009Q4	P.1 P.1(a)	Failure to Follow Corrective Action Procedure
05000482/FIN-2009005-05	2009Q4	H.10 H.1(c)	Mode Change Under Technical Specification 3.0.4.b Without Required Risk Management Actions
05000482/FIN-2009005-04	2009Q4	H.7	Failure to Incorporate Requirements of Regulatory Guide 1.182 into Daily Shutdown Risk Assessment
05000482/FIN-2009005-02	2009Q4		Control of Transient Ignition Sources
05000482/FIN-2009005-01	2009Q4	H.7	Failure to Correct Discolored Boric Acid Deposits
05000482/FIN-2009302-01	2009Q4	H.14	Inadequately Analyzed Emergency Operating Procedure Change
05000482/FIN-2009403-01	2009Q4		Security
05000482/FIN-2009007-08	2009Q4		Uncontrolled and Unanalyzed Room Environment Following a Complete Loss of Offsite Power
05000482/FIN-2009007-04	2009Q4		345 kV Offsite Power System Compliance with General Design Criterion 17
05000482/FIN-2009007-03	2009Q4	P.2	Failure to Correctly Screen Essential Service Water Piping Leaks for Significance
05000482/FIN-2009005-15	2009Q4	P.2	Failure to Report a Condition that Could Have Prevented Fulfillment of a Safety Function

Self-Identified List (Wolf Creek)

	Q	Title
05000482/FIN-2009005-17	2009Q4	Licensee-Identified Violation
05000482/FIN-2009005-18	2009Q4	Licensee-Identified Violation

[Wolf Creek Findings full list]

05000482/FIN-2009005-14

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