05000313/FIN-2016009-01

Finding

Title

Inadequate Loop Flow Testing

Description

The team identified a non-cited violation of License Conditions 2.C.(8), Fire Protection, for Unit 1; License Condition 2.C.(3)(b), Fire Protection, for Unit 2; and the technical requirements manuals because the licensee did not properly test all portions of the underground fire piping. Specifically, the licensee did not determine the flow rates through two headers that provided water to the ring header supplying the Unit 2 auxiliary building as designed. The licensee entered this violation into their corrective action program as Condition Report CR-ANO-C-2016-02613 and initiated actions to conduct a flow test of the headers. The failure to implement an adequate procedure to test underground fire piping was a performance deficiency. Specifically, the licensee did not test two headers included and designed as part of their underground fire piping to demonstrate that no faults had occurred. This performance deficiency was more than minor because it was associated with the protection against external factors attribute (fire) and adversely affected the Mitigating Systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the failure to test two underground fire piping headers failed to demonstrate the capability to deliver adequate flow and pressure to the fire suppression systems as designed. The finding was screened in accordance with Inspection Manual Chapter (IMC) 0609, Significance Determination Process, Attachment 4, Initial Characterization of Findings, dated June 19, 2012. Because the finding affected fixed fire protection systems or the ability to confine 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 Task 1.4.7, Fire Water Supply, Question A. Although the licensee failed to test all portions of the underground fire piping in accordance with their license and technical requirements manual, the team determined that at least 50 percent of required fire water capacity would be available based on the testing that is done. As a result, the finding was determined to be of very low safety significance (Green). The team determined that this finding did not have a cross-cutting aspect since it did not reflect current performance. Specifically, the licensee had not flow tested all underground fire piping headers since initial installation.

01
Site:	Arkansas Nuclear
Report	IR 05000313/2016009 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
INPO aspect
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v • d • e

Finding - Arkansas Nuclear - IR 05000313/2016009

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 05000313/2016009: 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]

05000313/FIN-2016009-01

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