05000458/FIN-2010005-02

Finding

Title

Two Examples of Completing Maintenance that Affected the Performance of Safety-Related Equipment but Was Not Properly Preplanned

Description

The inspectors reviewed a two-example self-revealing green noncited violation of Technical Specification 5.4.1 for two occasions on which the licensee completed maintenance that affected the performance of safety-related equipment (high pressure core spray) but was not properly preplanned and performed in accordance with written procedures, documented instructions, or drawings appropriate to the circumstances As a result, the licensee overtorqued the high pressure core spray lower motor bearing drain plug causing the plug to fracture. This fracture resulted in excessive oil leakage that caused the pump to become inoperable. The violation is in the licensees corrective action program as Condition Report CR-RBS-2011-00224 These performance deficiencies were more than minor and therefore constituted a finding because they affected the equipment performance attribute of the Mitigating Systems Cornerstone, and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. As described in Inspection Manual 0609 Appendix A, a Phase 2 analysis using the presolved worksheet determined that this finding had very low risk significance. The finding has a crosscutting aspect in the resources component of the human performance area because the apparent cause of the finding was a procedure that was not adequate to assure nuclear safety.

02
Site:	River Bend
Report	IR 05000458/2010005 Section 1R19
Date counted	Dec 31, 2010 (2010Q4)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	Self-revealing
Inspection Procedure:	IP 71111.19
Inspectors (proximate)	B Correll N Greene P Prescott L Carson D Jones A Barrett T Burns R Hagar G Larkin V Gaddy R Latta
CCA	H.7, Documentation
INPO aspect	WP.3
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v • d • e

Finding - River Bend - IR 05000458/2010005

1(0)2(3)3(4)4(7)5(7)6(4)201(1)301(0)302(0)402(0)403(0)404(0)405(0)501(0)31(0)

IR 05000458/2010005: 1 2 3 4 5 6 7

Finding List (River Bend) @ 2010Q4

CCA Matrix: 2010Q4

	Q	CCA	Title
05000458/FIN-2010002-03	2010Q1	H.2(a) H.6	Failure to Adequately Verify a Suitable Replacement Part Essential for Emergency Diesel Generator Operation
05000458/FIN-2010002-02	2010Q1		Failure to Verify Control Building Chiller Operability During Low Service Water Temperatures
05000458/FIN-2010002-01	2010Q1	H.5	Failure to Evaluate a Revised Equipment Tag Out
05000458/FIN-2010006-01	2010Q2	H.4 H.5	Failure to Ensure at Least One Train of Equipment Necessary to Achieve Hot Shutdown Conditions is Free of Fire Damage
05000458/FIN-2010201-01	2010Q2	H.7	Security
05000458/FIN-2010003-03	2010Q2	H.11 H.12	Failure to Follow Radiation Work Permit Instructions
05000458/FIN-2010003-02	2010Q2		Inadequate Procedure Results in Loss of Offsite Power to a 4160 Vac Safety Bus
05000458/FIN-2010003-01	2010Q2		Inadequate Risk Assessment for High Pressure Core Spray Pump Room Unit Cooler Maintenance
05000458/FIN-2010006-04	2010Q2		Failure to Implement and Maintain in Effect all Provisions of the Approved Fire Protection Program
05000458/FIN-2010006-02	2010Q2	H.7	Failure to Ensure Alternative Shutdown Procedure could be Implemented as Written
05000458/FIN-2010006-03	2010Q2		Failure to Implement and Maintain in Effect all Provisions of the Approved Fire Protection Program
05000458/FIN-2010004-04	2010Q3	H.14	Failure to Maintain Licensed Operator Examination Integrity
05000458/FIN-2010004-05	2010Q3		Inadequate High Pressure Core Spray Pump Room Cooler Bearing Maintenance
05000458/FIN-2010004-06	2010Q3		Inadequate Maintenance Results in Unplanned Opening of Main Turbine Bypass Valve
05000458/FIN-2010004-03	2010Q3		Use of a decommissioning funding mechanism that did not meet the requirements of 10 CFR 50.75(e)(1)(v)
05000458/FIN-2010004-02	2010Q3		Failure to provide complete and accurate information by failing to disclose its reliance on a contract in the March 2009 funds status report (10 CFR 50.75(f)(1) and 10 CFR 50.9)
05000458/FIN-2010004-01	2010Q3		Failure to provide adequate decommissioning funding assurance from Dec. 31, 2008 through the present (10 CFR 50.75(b))
05000458/FIN-2010005-02	2010Q4	H.7	Two Examples of Completing Maintenance that Affected the Performance of Safety-Related Equipment but Was Not Properly Preplanned
05000458/FIN-2010005-05	2010Q4	H.12	Failure to Plug a Main Condenser Tube in Accordance with an Approved Work Order
05000458/FIN-2010005-03	2010Q4	H.13	Failure to Perform Required Quality Control Inspections
05000458/FIN-2010005-04	2010Q4		Failure to Implement the Experience and Qualification Requirements of the Quality Assurance Program
05000458/FIN-2010005-01	2010Q4	P.5	Failure to Develop a Preventive Maintenance Schedule to Specify Inspection or Replacement of the O-Ring in the High Pressure Core Spray Lower Motor Bearing Drain Plug

Self-Identified List (River Bend)

	Q	Title
05000458/FIN-2010003-04	2010Q2	Licensee-Identified Violation
05000458/FIN-2010004-07	2010Q3	Licensee-Identified Violation
05000458/FIN-2010005-06	2010Q4	Licensee-Identified Violation
05000458/FIN-2010005-07	2010Q4	Licensee-Identified Violation

[River Bend Findings full list]

05000458/FIN-2010005-02

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