05000482/FIN-2009005-08

Finding

Title

Inadequate Operability Evaluation of Essential Service Water Pumps

Description

On November 5, 2009, inspectors identified a noncited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the failure to perform an adequate operability evaluation required by procedure. The inspectors identified that Operability Evaluation EF 09-010, Revisions 0 and 1, did not demonstrate that the essential service water pumps could withstand a safe shutdown earthquake. Revision 2 of the operability evaluation included calculations to demonstrate acceptable stresses and included pump impeller clearances. This issue is captured in the corrective action program as condition reports 22798 and 21572. The failure to perform an adequate operability evaluation per Procedures AP 28-001 and AP 26C 004 was a performance deficiency. The inspectors determined that this finding was more than minor because it is associated 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 to prevent undesirable consequences (i.e., core damage). Specifically, this issue relates to the availability and reliability examples of the equipment performance attribute because a latent common mode failure mechanism was not correctly evaluated. The inspectors evaluated the significance of this finding using Phase 1 of Inspection Manual Chapter 0609, Appendix A, and determined that the finding was of very low safety significance (Green) because the issue was not a design or qualification deficiency confirmed to result in loss of operability or functionality, did not represent a loss of system safety function, an actual loss of safety function of a single train for greater than its technical specification allowed outage time, an actual loss of safety function of a nontechnical specification risk-significant equipment train, and did not screen as potentially risk significant due to a seismic, flooding, or severe weather initiating event. The cause of the finding has a problem identification and resolution crosscutting aspect associated with the corrective action program because Wolf Creek failed to thoroughly evaluate the failure mechanism such that the resolutions address the causes and extent of conditions, as necessary P.1.c] (Section 1R15)

08
Site:	Wolf Creek
Report	IR 05000482/2009005 Section 1R15
Date counted	Dec 31, 2009 (2009Q4)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.15
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
CCA	P.2, Evaluation
INPO aspect	PI.2
'
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-2009005-08

Navigation menu

Search