05000298/FIN-2012004-05

Finding

Title

Failure to Adequately Assess and Manage Risk for Maintenance Activities That Affected the A Zurn Strainer

Description

The inspectors identified a non-cited violation of 10 CFR 50.65(a)(4), Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants, for the licensees failure to adequately assess and manage the increase in risk associated with maintenance activities. Specifically, on June 20, 2012, and July 27, 2012, licensee personnel failed to adequately assess and manage the increase in risk associated with Zurn strainer maintenance activities. This finding was entered into the licensees corrective action program as Condition Reports CR-CNS-2012-04182 and CR-CNS-2012-05006. The licensees failure to adequately assess and manage the increase in risk associated with Zurn strainer maintenance activities was a performance deficiency. This performance deficiency was determined to be more than minor and is therefore a finding because it affected the equipment performance attribute of the Mitigating Systems Cornerstone, in that the licensee failed to recognize the Zurn strainers were unavailable, thereby directly affecting the cornerstone objective of ensuring the availability and reliability of systems that respond to initiating events to prevent undesirable consequences. Using Inspection Manual Chapter 0609, Appendix K, Maintenance Risk Assessment and Risk Management Significance Determination Process, Flowchart 1, Assessment of Risk Deficit, inspectors determined the need to calculate the risk deficit to determine the significance of this issue. Therefore, a senior reactor analyst performed a bounding detailed risk evaluation. The analyst determined that the event would be time dependant, alarms would alert operators of the issue before the function would be lost, and recovery actions were available to bypass the strainers. The result was the incremental core damage probability was determined to be less than 1 X 10^-6, so the finding was determined to be of very low safety significance (Green). The inspectors determined that the apparent cause of this finding was that operators had failed to verify their assumptions associated with using manual actions to maintain equipment available. Therefore, finding has a cross-cutting aspect in the area of human performance associated with the decision-making component because the licensee failed to use conservative assumptions in decision-making and adopt a requirement to demonstrate that the proposed action is safe in order to proceed rather than a requirement to demonstrate it is unsafe in order to disapprove the action.

05
Site:	Cooper
Report	IR 05000298/2012004 Section 1R13
Date counted	Sep 30, 2012 (2012Q3)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.13
Inspectors (proximate)	J Josey J Laughlin P Elkmann R Hagar A Fairbanks C Henderson G Guerra
CCA	H.14, Conservative Bias
INPO aspect	DM.2
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v • d • e

Finding - Cooper - IR 05000298/2012004

1(0)2(9)3(16)4(13)5(12)6(0)7(6)8(0)301(1)403(0)404(4)501(0)503(0)801(0)31(0)

IR 05000298/2012004: 1 2 3 4 5 6 7 8 9 10 11 12 13

Finding List (Cooper) @ 2012Q3

CCA Matrix: 2012Q3

	Q	CCA	Title
05000298/FIN-2011005-07	2011Q4	H.14	Failure to Perform Required 10 CFR 50.59 Evaluations for Changes
05000298/FIN-2011005-04	2011Q4		Failure to Provide Complete and Accurate Solid Radwaste Shipment Information in Annual Reports
05000298/FIN-2011005-01	2011Q4	H.2	Failure to Conspicuously Post a High Radiation Area
05000298/FIN-2011005-02	2011Q4	H.2	Failure to Maintain Control and Continuous Coverage of a Posted Locked High Radiation Area
05000298/FIN-2011005-03	2011Q4	H.12	Failure to Follow Procedures for Dose Rate Alarms Received by Two Individuals
05000298/FIN-2011005-05	2011Q4	P.1	Failure to Identify Deficient Performance During a Single-Facility Drill
05000298/FIN-2011005-06	2011Q4	P.2	Failure to Correctly Translate Design Requirements into Installed Plant Configuration
05000298/FIN-2011202-02	2011Q4		Security
05000298/FIN-2012002-05	2012Q1	H.7	Unevaluated Pre-conditioning for Core Spray Motor-operated Valves prior to Conducting As Found In-service Surveillance Testing
05000298/FIN-2012002-08	2012Q1	H.2	Failure to Follow Station Procedure Results in Inadequate Work Instructions
05000298/FIN-2012002-07	2012Q1		Failure to Furnish Evidence of an Activity Affecting Quality
05000298/FIN-2012002-06	2012Q1	H.14	Failure to Follow Radiation Work Permit Requirements
05000298/FIN-2012002-04	2012Q1		Failure to Maintain Design Control of Standby Liquid Control System
05000298/FIN-2012002-03	2012Q1	H.12	Failure to Appropriately Manage Risk for Maintenance in the Stations Switchyard
05000298/FIN-2012002-02	2012Q1	P.2	Failure to Scope Required Components in the Stations Maintenance Rule Monitoring Program
05000298/FIN-2012002-01	2012Q1	P.2	Failure to Maintain Design Control for Internal Flooding
05000298/FIN-2012404-02	2012Q2	H.7	Security
05000298/FIN-2012404-01	2012Q2	H.14	Security
05000298/FIN-2012007-06	2012Q2	P.2	Failure to Incorporate all Design and Technical Data Available into the Operability Determinations for the Standby Liquid Control Tank and Test Tank
05000298/FIN-2012007-05	2012Q2	P.3	Failure to Have an Adequate Procedure for Erecting Flood Barriers
05000298/FIN-2012007-04	2012Q2		Failure to Establish a Preventative MaintenanceProgram for Molded Case Circuit Breakers
05000298/FIN-2012007-03	2012Q2		Failure to Address the Design Bases of the Battery Chargers Following Identification of an Undersized Fused Disconnect Switch Connecting the Swing Battery Chargers to the Direct Current (DC) Buses
05000298/FIN-2012007-02	2012Q2	H.14	Failure to Provide Adequate Resistance Values for the Preventative Maintenance of the Non-Segregated Phase Bus Duct
05000298/FIN-2012007-01	2012Q2	H.2	Failure to Adequately Analyze Seismic Requirements for Service Water instrument Rack
05000298/FIN-2012003-14	2012Q2	H.14	Failure to Use Design-Basis Parameter Values in Design-Related Calculations
05000298/FIN-2012003-13	2012Q2	H.14	Fail to Correct a Condition Adverse to Quality for Determining the Number of Multiply Starts for a Single Diesel Generator Starting Air Accumulator
05000298/FIN-2012003-12	2012Q2	H.14	Failure to Maintain Design Control of the Essential Ventilation System
05000298/FIN-2012003-10	2012Q2	H.13	Failure to Perform a Radiation and Contamination Survey
05000298/FIN-2012003-09	2012Q2	H.14	Failure to Follow Radiation Work Permit Requirements
05000298/FIN-2012003-08	2012Q2	P.2	Non-conservative Service Water Booster Pump A and D Differential Pressure Operability Limits During In-Service Surveillance Testing
05000298/FIN-2012003-11	2012Q2	H.5	ALARA Program Failed to Prevent Unintended Doses for Refueling Floor Activities, Outage RE26
05000298/FIN-2012003-01	2012Q2	H.7	Failure to Perform Adequate Postmaintenance Testing
05000298/FIN-2012003-02	2012Q2	H.14	Failure to Ensure Compliance with the Requirements of Station Troubleshooting Procedure
05000298/FIN-2012003-03	2012Q2	H.14	Failure to Recognize the Need for An Evaluation and to Properly Document the Bases for Operability
05000298/FIN-2012003-04	2012Q2	P.2	Failure to Maintain Design Control of the Standby Liquid Control System and Sumps Credited in the Internal Flooding Analysis
05000298/FIN-2012003-05	2012Q2		Failure to Furnish Evidence of an Activity Affecting Quality
05000298/FIN-2012003-06	2012Q2	H.8	Design Changes Not Appropriately Approved by the Licensee
05000298/FIN-2012003-07	2012Q2	H.14	Failure to Evaluate Changes for Adverse Impacts
05000298/FIN-2012004-06	2012Q3		Failure to Obtain Prior NRC Approval for a Change Regarding the Supplemental Diesel Generator
05000298/FIN-2012004-10	2012Q3	H.14	Failure to Follow Surveillance Procedures for Reactor Equipment Cooling
05000298/FIN-2012004-09	2012Q3	P.1	Failure to Correct Exercise Performance Deficiencies
05000298/FIN-2012004-08	2012Q3	H.14	Failure to Consider All Relevant Information and Appropriately Assess Operability When A Degraded Nonconforming Condition Was Identified
05000298/FIN-2012004-07	2012Q3	P.3	Failure to Provide Procedure Appropriate to the Circumstance of Assembling the Zurn Strainer
05000298/FIN-2012004-05	2012Q3	H.14	Failure to Adequately Assess and Manage Risk for Maintenance Activities That Affected the A Zurn Strainer
05000298/FIN-2012004-04	2012Q3	H.14	Failure to Control Vendor Changes to a Service Water Booster Pump
05000298/FIN-2012004-03	2012Q3	H.7	Failure to Maintain Design Control of the Reactor Equipment Cooling System
05000298/FIN-2012004-02	2012Q3	H.14	Failure to Demonstrate that Emergency Diesel Generators can Perform Multiple Air Starts from a Single Air Receiver
05000298/FIN-2012004-01	2012Q3		Failure To Maintain Design Control of the Emergency Diesel Generators Voltage Regulator Cabinets

Self-Identified List (Cooper)

	Q	Title
05000298/FIN-2011005-08	2011Q4	Licensee-Identified Violation
05000298/FIN-2011005-09	2011Q4	Licensee-Identified Violation
05000298/FIN-2012003-15	2012Q2	Licensee-Identified Violation
05000298/FIN-2012003-16	2012Q2	Licensee-Identified Violation
05000298/FIN-2012404-03	2012Q2	Security
05000298/FIN-2012404-04	2012Q2	Security
05000298/FIN-2012004-11	2012Q3	Inadequate Risk Assessment for RHR B LCO Maintenance Window
05000298/FIN-2012004-12	2012Q3	Service Water Pump Temperature Switch HT-TS-100
05000298/FIN-2012004-13	2012Q3	Recirculation Pump Motor Generator A

[Cooper Findings full list]

05000298/FIN-2012004-05

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