05000458/FIN-2018001-02

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v t e Finding
Title	Installation of an Incorrectly Specified Relay Causes Plant Transient and Reactor Scram
Description	The inspectors reviewed two examples of a self-revealed finding for the licensees installation of an incorrectly specified relay in 1) the control circuitry for the feedwater level control systemand 2) the turbine generator voltage regulator circuitry. In each instance, the incorrectly specifiedrelay failed in service, causing a plant transient and automatic reactor scram

02
Site:	River Bend
Report	IR 05000458/2018001 Section 4OA2
Date counted	Mar 31, 2018 (2018Q1)
Type:	Finding: Green
cornerstone	Initiating Events
Identified by:	NRC identified
Inspection Procedure:	IP 71152
Inspectors (proximate)	J Sowa B Parks M O J Drake C Young L Carson J Kozal
INPO aspect	WP.1
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v • d • e

Finding - River Bend - IR 05000458/2018001

1(2)2(2)3(1)4(0)5(0)6(0)10(0)11(0)12(7)301(2)403(0)404(0)406(3)

IR 05000458/2018001: 1 2

Finding List (River Bend) @ 2018Q1

CCA Matrix: 2018Q1

	Q	CCA	Title
05000458/FIN-2017003-01	2017Q3	H.6	Failure to Account for Delayed Closure of Isolation Valves in the Ultimate Heat Sink Inventory Analysis
05000458/FIN-2017003-02	2017Q3	H.5	Manual Reactor Scram Initiated in Response to Increase in Steam Pressure during Steam Leak Troubleshooting
05000458/FIN-2018001-01	2018Q1		Failure to Implement Procedure for Storage of Material in the Pools
05000458/FIN-2018001-02	2018Q1		Installation of an Incorrectly Specified Relay Causes Plant Transient and Reactor Scram

Self-Identified List (River Bend)

	Q	Title
05000458/FIN-2017404-01	2017Q3	Licensee-Identified Violation

[River Bend Findings full list]

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