05000368/FIN-2016009-03

Finding

Title

Failure to Ensure that the Assumptions in the Engineering Analysis Remain Valid

Description

The team identified a non-cited violation of License Condition 2.C(3)(b), Fire Protection, for the failure to establish an appropriate monitoring program in accordance with National Fire Protection Association Standard 805, Section 2.6. Specifically, the licensee failed to set the action level for the availability of some plant components to ensure that the assumptions in the engineering analysis remained valid and also failed to establish a monitoring plan for the concurrent unavailability of one set of two components. The licensee entered the issues into their corrective action program as Condition Reports CR-ANO-2-2016-02355 and was in the process of developing corrective actions to address the monitoring of the components and work with industry organizations and Office of Nuclear Reactor Regulation to determine long-term resolution. The failure to adequately monitor unavailability of the plant components to ensure that the assumptions in the engineering analysis remained valid was a performance deficiency. The performance deficiency was more than minor because if left uncorrected, the performance deficiency had the potential to lead to a more significant safety concern. Specifically, the performance deficiency could adversely affect the acceptable level of availability of the components which are used to respond to fire initiating events, in that the action levels for availability in the monitoring program were greater than the assumptions in the fire probabilistic risk assessment. The finding was screened in accordance with Inspection IMC 0609, Significance Determination Process, Attachment 4, Initial Characterization of Findings, dated June 19, 2012. Because the finding affected the ability to reach and maintain safe shutdown conditions in case of a fire, the team reviewed the finding using IMC 0609, Appendix F, Attachment 1, Fire Protection Significance Determination Process Worksheet, dated September 20, 2013. The finding was screened as a Green finding of very low safety significance in accordance with Step 1.3, Ability to Achieve Safe Shutdown, B Question. Based on the criteria in Appendix F, Attachment 2, Degradation Rating Guidance Specific to Various Fire Protection Program Elements, dated February 28, 2005, the finding was assigned a low degradation rating. Using Table A2.3, the inspectors assigned the low degradation rating because the issue involved monitoring of components that did not appreciably degrade below acceptable levels during the exposure period. This finding had a cross-cutting aspect associated with change management within the human performance area since leaders did not use a systematic process (e.g., assigning an overall owner) for evaluating and implementing change during the development of the monitoring program for the fire probabilistic risk assessment model for Unit 2 (H.3).

03
Site:	Arkansas Nuclear
Report	IR 05000368/2016009 Section 1R05
Date counted	Jun 30, 2016 (2016Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.05
Inspectors (proximate)	G Pick G Werner H Barrett J Mateychick N Okonkwo R Deese S Alferink S Makor
Violation of:	License Condition - Fire Protection
CCA	H.3, Change Management
INPO aspect	LA.5
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v • d • e

Finding - Arkansas Nuclear - IR 05000368/2016009

1(6)2(3)3(1)4(4)5(0)6(0)7(21)8(6)9(4)10(0)11(0)301(0)401(0)402(0)403(0)404(2)405(0)11(1)

IR 05000368/2016009: 1 2 3 4

Finding List (Arkansas Nuclear) @ 2016Q2

CCA Matrix: 2016Q2

	Q	CCA	Title
05000313/FIN-2015003-02	2015Q3		Failure to Promptly Correct a Condition Adverse to Quality Involving Motor Control Center Bus Stabs
05000368/FIN-2015003-01	2015Q3	H.12	Failure to Follow Procedure Results in Increased Reactor Coolant Activity
05000313/FIN-2015004-03	2015Q4		Failure to Properly Translate the Design Requirements for the Unit 1 Decay Heat Vault Rooms Being Sealed (
05000313/FIN-2015004-01	2015Q4	H.13	Failure to Assess Risk for Switchyard Work
05000313/FIN-2015004-02	2015Q4	H.12	Failure to Identify and Correct Rain Water Accumulation in the Emergency Diesel Generator System Exhausts
05000368/FIN-2016001-02	2016Q1		Failure to Follow Design Control Requirements for Pump Seal Cooler Replacements
05000313/FIN-2016007-17	2016Q1		Determine Impact of Modifying Fire Seals for Flood Protection
05000313/FIN-2016007-14	2016Q1	H.3	Failure to Properly Implement the Corrective Action Program
05000368/FIN-2016007-08	2016Q1		Inadequate Flow Monitoring of Unit 2 Service Water to Emergency Feedwater Pump Suction Supply
05000368/FIN-2016007-07	2016Q1		Failure to Maintain Service Water Design Cooling to the Unit 2 High Pressure Safety Injection Pump Seal and Bearing Coolers
05000368/FIN-2016007-05	2016Q1		Failure to Include Unit 2 Service Water Pump Supports in the ASME Code Section XI Inservice Inspection Program
05000368/FIN-2016001-03	2016Q1		Blocked Drain Results in Emergency Feedwater Pump Inoperability
05000313/FIN-2016001-01	2016Q1	H.4	Failure to Assess and Manage Hot Work Risk
05000313/FIN-2016007-15	2016Q1	P.1	Failure to Maintain Structural Design Clearances inside the Unit 1 and 2 Reactor Containment Buildings
05000368/FIN-2016001-04	2016Q1	H.12	Failure to Inject Service Water with Corrosion Inhibitors during Refueling Outages
05000313/FIN-2016007-11	2016Q1	P.5	Pressurizer Block Valve Not Installed in the Qualified Environmental Configuration
05000368/FIN-2016007-10	2016Q1	P.6	Failure to Develop an Operability Decision-Making Issue for Degraded Condition on Safety Injection Tank
05000313/FIN-2016007-02	2016Q1	P.6	Inadequate Effectiveness Reviews for Corrective Actions to Prevent Recurrence
05000313/FIN-2016007-01	2016Q1	P.3	Failure to Complete Extent of Condition Reviews for the Stator Drop Significant Condition Adverse to Quality Event
05000313/FIN-2016001-05	2016Q1	P.2	Failure to Identify and Repair Intermittent Card Failure Leads to a Reactor Trip
05000313/FIN-2016007-16	2016Q1	H.7	Failure to Properly Calibrate Unit 1 Reactor Building Atmospheric Particulate Radiation Monitor RE-7460
05000313/FIN-2016007-12	2016Q1	P.1	Failure to Perform Predictive Maintenance on Safety-Related Medium-Voltage Switchgear
05000313/FIN-2016007-03	2016Q1	H.14	Inadequate Operating Experience Evaluations
05000313/FIN-2016007-04	2016Q1	H.14	Inadequate Control of Monitoring for Wall Loss in the Service Water System
05000313/FIN-2016007-13	2016Q1	H.1	Failure to Update Probabilistic Risk Assessment Model in a Timely Manner Results in Failure to Submit Complete and Accurate Information
05000313/FIN-2016007-09	2016Q1	H.5	Emergency Feedwater Pump Casing Wall Loss Not Monitored
05000313/FIN-2016007-06	2016Q1	H.6	Failure to Correct Degraded Unit 2 Train B Emergency Diesel Generator Heat Exchangers Service Water Flow and Degraded Unit 1 Containment Coatings
05000313/FIN-2016009-01	2016Q2		Inadequate Loop Flow Testing
05000368/FIN-2016009-04	2016Q2		Failure to Adequately Establish Ignition Frequencies for the Risk-Informed Fire Protection Program
05000368/FIN-2016009-03	2016Q2	H.3	Failure to Ensure that the Assumptions in the Engineering Analysis Remain Valid
05000368/FIN-2016009-02	2016Q2		Inadequate Procedure Used as a Compensatory Measure
05000368/FIN-2016002-02	2016Q2		Failure to Clean Main Feedwater Lube Oil Reservoir Leads to Reactor Power Reduction
05000368/FIN-2016002-01	2016Q2	H.5	Failure to Incorporate Vendor Guidance in Work Order

Self-Identified List (Arkansas Nuclear)

	Q	Title
05000313/FIN-2015404-01	2015Q3	Licensee-Identified Violation
05000313/FIN-2016001-06	2016Q1	Licensee-Identified Violation
05000313/FIN-2016007-18	2016Q1	Licensee-Identified Violation
05000313/FIN-2016007-19	2016Q1	Licensee-Identified Violation
05000368/FIN-2016007-20	2016Q1	Licensee-Identified Violation
05000313/FIN-2016007-21	2016Q1	Licensee-Identified Violation
05000368/FIN-2016002-03	2016Q2	Licensee-Identified Violation

[Arkansas Nuclear Findings full list]

05000368/FIN-2016009-03

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