05000456/FIN-2018003-01

Finding

Title

Inadequate Detail in Maintenance Procedure for Emergency Diesel Generator 2-Year Inspection Contributed to 1A Emergency Diesel GeneratorFuel Rack Binding

Description

A self-revealed finding of very low safety significance (i.e., Green) and an associated Non-Cited Violation (NCV) of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, was identified for the licensees failure to include adequate detail within their maintenance procedures to enable proper lubrication of the emergency diesel generator (EDG) fuel rack control linkage. Specifically, the preventative maintenance template for the fuel rack control linkage required that the manual fuel trip lever and associated linkage be lubricated every 2 years. However, the licensees implementing 2year maintenance procedure failed to include specific instructions to disassemble the lever assembly for lubrication. This lack of lubrication contributed to the mechanical binding of the emergency diesel generator fuel rack and failure of the 1A EDG during surveillance testing on April 22,2018.

01
Site:	Braidwood
Report	IR 05000456/2018003 Section 4OA3
Date counted	Sep 30, 2018 (2018Q3)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	Self-revealing
Inspection Procedure:	IP 71153
Inspectors (proximate)	D Kimble D Betancourt R Baker K Barclay J Cassidy T Go K Pusateri M Porfirio E Duncan
Violation of:	10 CFR 50 Appendix B 10 CFR 50 Appendix B Criterion V
CCA	H.7, Documentation
INPO aspect	WP.3
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Finding - Braidwood - IR 05000456/2018003

1(0)2(3)3(2)4(0)5(0)6(0)10(0)11(0)12(0)13(0)301(0)410(0)411(1)412(0)503(0)

IR 05000456/2018003: 1 2

Finding List (Braidwood) @ 2018Q3

CCA Matrix: 2018Q3

	Q	CCA	Title
05000456/FIN-2017008-01	2017Q4		Failure to Prevent Secondary Missiles Following a Postulated HELB
05000456/FIN-2017008-02	2017Q4		Inadequate Blow Out Panel Design Control
05000456/FIN-2017008-03	2017Q4		Failure to Properly Correct Errors in Design Analysis for Main Steam Line Break in Main Steam Tunnel
05000456/FIN-2017008-04	2017Q4		Untimely Corrective Action for Secondary Missiles
05000456/FIN-2017008-05	2017Q4		Inaccurate Analysis of Record
05000457/FIN-2018002-01	2018Q2	H.9	Inadequate Detail in Maintenance Work Instructions Resulted in Failed Gearbox Oil Cooler Head Gasket and Inoperable 2B Auxiliary Feedwater Pump
05000456/FIN-2018002-02	2018Q2	H.3	Work Instruction Error Results in Reactor Coolant System Pressure Transient
05000456/FIN-2018002-03	2018Q2	H.4	Inadequate Test Activity Coordination Results in Unintended Valve Actuation and Reactor Coolant System Pressure Drop
05000456/FIN-2018003-01	2018Q3	H.7	Inadequate Detail in Maintenance Procedure for Emergency Diesel Generator 2-Year Inspection Contributed to 1A Emergency Diesel GeneratorFuel Rack Binding
05000456/FIN-2018003-02	2018Q3		Minor Violation

Self-Identified List (Braidwood)

	Q	Title
05000456/FIN-2018411-01	2018Q3	Licensee-Identified Violation

[Braidwood Findings full list]

05000456/FIN-2018003-01

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