05000390/FIN-2018003-01

Finding

Title

Configuration Control Error Results in Actual Auxiliary Building Internal Flooding Event

Description

A self-revealed Green finding and associated NCV of Technical Specification (TS) 5.7.1, Procedures, was identified when the licensee failed to maintain adequate configuration control in the high pressure fire protection (HPFP) system in accordance with station configuration control procedure, NPG-SPP-10.2, Clearance Procedure to Safely Control Energy. Specifically, the licensee failed to restore HPFP system vent and drain valves to their appropriate configuration prior to returning the system to service which resulted in a significantly large amount of HPFP system water (on the order of 10,000 gallons) being introduced into many areas (including all levels) of the Unit 1 side of the auxiliary building and wetting numerous structures, systems, and components (SSCs) (including cables, ventilation ducts, motor-operated valves, etc.)

01
Site:	Watts Bar
Report	IR 05000390/2018003 Section 1R06
Date counted	Sep 30, 2018 (2018Q3)
Type:	NCV: Green
cornerstone	Initiating Events
Identified by:	Self-revealing
Inspection Procedure:	IP 71111.06
Inspectors (proximate)	J Nadel J Hamman M Thomas M Donithan M Kirk S Roberts A Butcavage W Loo A Nielsen A Masters
Violation of:	Technical Specification - Procedures
CCA	H.12, Avoid Complacency
INPO aspect	QA.4
'
v • d • e

Finding - Watts Bar - IR 05000390/2018003

1(1)2(2)3(7)4(0)6(0)10(3)11(0)12(1)13(0)50(1)301(0)410(1)411(0)40(0)

IR 05000390/2018003: 1 3 5 6 7 2 4

Finding List (Watts Bar) @ 2018Q3

CCA Matrix: 2018Q3

	Q	CCA	Title
05000391/FIN-2017004-03	2017Q4	H.5	Failure to Promptly Identify a Condition Adverse to Quality for a Boric Acid Leak on 2-SMV-68-548
05000390/FIN-2017004-02	2017Q4	H.5	Inadequate Procedure for Temporary Configuration Changes
05000390/FIN-2017004-01	2017Q4		Misapplication of Technical Specification Limiting Condition for Operation 3.0.6
05000390/FIN-2018010-01	2018Q1		Potential Failure to Request NRC Approval to Increase the OPT and OTT Response Times
05000390/FIN-2018010-02	2018Q1		Potential Failure to Perform a 50.59 Evaluation for Auxiliary Building and Containment Isolation
05000390/FIN-2018010-03	2018Q1		Potential Failure to Maintain Design Requirements of RTDs
05000390/FIN-2018001-01	2018Q1		Misapplication of Technical Specification Limiting Condition for Operation 3.0.6
05000390/FIN-2018002-01	2018Q2	H.1	Inadequate Procedure Results in Exceeding the Design Pressure of the RHR Piping
05000390/FIN-2018012-01	2018Q2		Potential Failure to Implement Reviews of Adverse Employment Actions in Accordance with Confirmatory Order, EA-09-009 and EA-09-203
05000390/FIN-2018410-01	2018Q2	H.12	Security
05000390/FIN-2018003-01	2018Q3	H.12	Configuration Control Error Results in Actual Auxiliary Building Internal Flooding Event
05000391/FIN-2018003-02	2018Q3	H.4	Unauthorized Entry Into a High Radiation Area
05000390/FIN-2018003-03	2018Q3	H.12	Failure to Collect Compensatory Samples for an Out-of-Service Effluent Monitor
05000391/FIN-2018003-04	2018Q3	H.5	Inadequate Sensitive Equipment Control Results in Unit 2 Reactor Trip on April 12, 2018

Self-Identified List (Watts Bar)

	Q	Title
05000390/FIN-2017004-04	2017Q4	Licensee-Identified Violation
05000390/FIN-2018002-02	2018Q2	Licensee-Identified Violation
05000390/FIN-2018050-01	2018Q2	Licensee-Identified Violation
05000390/FIN-2018003-05	2018Q3	Licensee-Identified Violation
05000390/FIN-2018003-06	2018Q3	Licensee-Identified Violation
05000390/FIN-2018003-07	2018Q3	Licensee-Identified Violation

[Watts Bar Findings full list]

05000390/FIN-2018003-01

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