05000313/FIN-2018011-01

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v t e Finding
Title	Failure to Properly Size the Unit 1 Emergency Diesel Generator Room Ventilation Svstems
Description	An NRC identified Green, non-cited violation of 10 CFR Part 50, Appendix B, Criterion Ill, "Design Control," was identified for failure to properly size the Unit 1 emergency diesel generator room ventilation systems to be capable of removing the design heat load during the most limiting design conditions while maintaining redundancy of the exhaust fans.

01
Site:	Arkansas Nuclear
Report	IR 05000313/2018011 Section 1R21
Date counted	Sep 30, 2018 (2018Q3)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.21M
Inspectors (proximate)	W Sifre N Okonkwo C Smith G Callaway R Deese C Baron S Gardner T Famholtz
Violation of:	10 CFR 50 Appendix B
INPO aspect
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v • d • e

Finding - Arkansas Nuclear - IR 05000313/2018011

201(0)1(3)3(6)4(0)5(0)6(0)12(0)13(0)301(0)403(0)404(0)405(2)10(0)40(0)

IR 05000313/2018011: 1 2 3

Finding List (Arkansas Nuclear) @ 2018Q3

CCA Matrix: 2018Q3

	Q	CCA	Title
05000313/FIN-2017015-02	2017Q4		Security
05000313/FIN-2017015-01	2017Q4		Security
05000313/FIN-2018001-01	2018Q1		Failure to Establish Adequate Criteria for Flood Seal Testing
05000368/FIN-2018001-02	2018Q1		Failure to Preplan and Perform Service Water Pre-Screen Maintenance
05000313/FIN-2018002-01	2018Q2	H.12	Failure to Implement Procedural Guidance to Close Spent Fuel Pool Cooler Outlet Crosstie Valve
05000313/FIN-2018003-01	2018Q3		Failure to Translate the Design Requirements into Instructions for Refueling Emergency Diesel Generators
05000313/FIN-2018003-02	2018Q3	H.2	Failure to Implement Welding Standard Guidance and Examination Procedures
05000313/FIN-2018003-03	2018Q3		Failure to Provide Complete and Accurate Information in a License Amendment Request to Change Emergency Action Level Requirements
05000313/FIN-2018003-04	2018Q3	P.3	Failure to Verify Safety-Related 4160 V Breaker Operability Following Maintenance Activities
05000313/FIN-2018003-05	2018Q3	H.4	Failure to Maintain Main Feedwater Pump B Discharge Pressure in Band Caused a Reactor Trip
05000313/FIN-2018003-06	2018Q3	P.3	Reactor Power Transient Caused by the Turbine Bypass Valve Failing Open
05000313/FIN-2018011-01	2018Q3		Failure to Properly Size the Unit 1 Emergency Diesel Generator Room Ventilation Svstems
05000313/FIN-2018011-02	2018Q3	H.6	Failure of Both Arkansas Nuclear One Units to Establish Adequate Corrective Actions Resulting in Excessive Instances of Damaged and Broken Internals of the Emergency Feedwater Pum o Turbine Steam Admission Check Valves.
05000313/FIN-2018011-03	2018Q3		Failure to Evaluate the Effects and the Suitability of Components in Containment from a Main Steam Line Break.
05000313/FIN-2018405-01	2018Q3	P.2	Security

Self-Identified List (Arkansas Nuclear)

	Q	Title
05000313/FIN-2018001-03	2018Q1	Licensee-Identified Violation
05000313/FIN-2018405-02	2018Q3	Licensee-Identified Violation

[Arkansas Nuclear Findings full list]

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