05000390/FIN-2017007-01

Finding

Title

Failure to Replace Namco Limit Switch Gasket to Maintain EQ Qualification

Description

The NRC identified a Green non-cited violation (NCV) of title 10 Code of Federal Regulations (CFR) Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the licensees failure to implement instructions to replace Namco limit switch gaskets as required to maintain environmental qualification. The licensee entered this issue into their corrective action program as CR 1309040. The performance deficiency was determined to be more than minor because it was associated with the Equipment Performance attribute of Mitigating Systems cornerstone and adversely affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, not maintaining the main steam header isolation valve limit switches in their qualified condition impacted their reliability. The inspectors determined the finding to be of very low safety significance (Green) because the finding was a deficiency affecting the qualification of a mitigating structure, system, or component (SSC), and the SSC maintained its operability or functionality. Because the finding was indicative of current licensee performance, the inspectors assigned the cross-cutting aspect of Documentation in the area of Human Performance [H.7] because the procedure did not contain accurate instructions related to the replacement of the gaskets.

01
Site:	Watts Bar
Report	IR 05000390/2017007 Section 1R21
Date counted	Jun 30, 2017 (2017Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.21
Inspectors (proximate)	E Stamm T Fanelli T Su J Bartley
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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v • d • e

Finding - Watts Bar - IR 05000390/2017007

1(3)2(6)3(0)7(5)9(0)403(1)404(0)405(0)406(0)502(0)

IR 05000390/2017007: 1 2 3 4 5

Finding List (Watts Bar) @ 2017Q2

CCA Matrix: 2017Q2

	Q	CCA	Title
05000390/FIN-2016011-05	2016Q3		Common Service Station Transformers A and B General Design Criteria 17 Analyses
05000390/FIN-2016403-01	2016Q3	H.8	Security
05000390/FIN-2016011-01	2016Q3	H.7	Failure To Ensure Adequate Unit 1 Emergency Diesel Generator Surveillance Instructions
05000390/FIN-2016011-02	2016Q3	H.6	Failure To Adequately Evaluate Available Net Positive Suction Head To The Unit 1 AFW Pumps
05000390/FIN-2016003-02	2016Q3	H.5	Inappropriate Procedure used for Work Order Scope Change Results in Loss of 1B-B Shutdown Board.
05000391/FIN-2016011-04	2016Q3	H.6	Failure To Adequately Evaluate Available Net Positive Suction Head To The Unit 2 AFW Pumps
05000391/FIN-2016011-03	2016Q3	H.7	Failure To Ensure Adequate Unit 2 Emergency Diesel Generator Surveillance Instructions
05000390/FIN-2016003-01	2016Q3		Falsified Fire Watch Records
05000390/FIN-2016004-03	2016Q4		Notice of Enforcement Discretion 16-2-01 for Emergency Diesel Generator 1A-A Inoperable for Longer Than Allowed by Technical Specifications
05000390/FIN-2016004-01	2016Q4	H.4	Inadequate Immediate Determination of Operability for Essential Raw Cooling Water Pumps
05000391/FIN-2016013-03	2016Q4		Failure to Implement Confirmatory Order Requirement for Adverse Employment Action
05000390/FIN-2016013-02	2016Q4		Failure to Provide Accurate Information
05000390/FIN-2016013-01	2016Q4	P.1	Failure to Implement the Program Requirement to Enter Issues into the CAP
05000390/FIN-2016501-01	2016Q4	P.4	Failure to Maintain Minimum On-Shift Emergency Response Staffing Levels
05000390/FIN-2016004-02	2016Q4	P.2	Inadequate Immediate Determination of Operability for Containment Penetration X-65
05000390/FIN-2016404-01	2016Q4		Security
05000391/FIN-2017001-02	2017Q1	P.1	Inadequate Immediate Determination of Operability for Essential Raw Cooling Water Flush Valve
05000390/FIN-2017001-01	2017Q1	P.1	Failure to Maintain the Abnormal Operating Instruction for Tornados
05000390/FIN-2017403-01	2017Q1	H.1	Security
05000391/FIN-2017002-01	2017Q2	H.5	Inadequate Chemistry Procedure Results in Inoperable Containment Isolation Valves
05000390/FIN-2017002-04	2017Q2		Failure to Report Multiple Examples of a Loss of Safety Function in accordance with 10 CFR 50.72 and 50.73
05000390/FIN-2017002-02	2017Q2	H.12	Failure to Implement Clearance on Containment Isolation Valve Results in TS 3.6.3 Violation
05000390/FIN-2017007-01	2017Q2	H.7	Failure to Replace Namco Limit Switch Gasket to Maintain EQ Qualification
05000390/FIN-2017002-03	2017Q2		Failure to Follow Procedure Results in Reactor Coolant Pump Failure to Transfer and Unit 1 Reactor Trip
05000390/FIN-2017007-02	2017Q2		Failure to Maintain an Adequate Record of Qualification
05000390/FIN-2017007-03	2017Q2		Potential Failure to Address Environmental Qualification of Brand-Rex Cables
05000390/FIN-2017007-04	2017Q2		Potential Failure to Justify Qualification of O-Rings by Commercial Grade Dedication
05000390/FIN-2017007-05	2017Q2		Potential Failure to Address Environmental Qualification of Barton Transmitters

Self-Identified List (Watts Bar)

	Q	Title
05000390/FIN-2016003-03	2016Q3	Licensee-Identified Violation
05000390/FIN-2016013-04	2016Q4	Licensee-Identified Violation
05000390/FIN-2017001-03	2017Q1	Licensee-Identified Violation
05000390/FIN-2017002-06	2017Q2	Licensee-Identified Violation
05000390/FIN-2017002-05	2017Q2	Licensee-Identified Violation

[Watts Bar Findings full list]

05000390/FIN-2017007-01

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