05000416/FIN-2018002-06

Finding

Title

Improper Evaluation and Resolution of Intermediate Range MonitorNoise Leads to Manual Reactor Shutdown

Description

A self-revealed, Green non-cited violation of 10CFRPart50, Appendix B, Criterion XVI, Corrective Action, was identified for the failure of the licensee to identify and correct a condition adverse to quality. Specifically, the licensee failed to implement appropriate corrective actions related to intermediate range monitor (IRM) nuclear instrument (NI) electronic noise spiking. The failure to implement adequate corrective actions over the course of at least 5 years resulted in a plant shutdown due to declaration of multiple IRM channels inoperable while in Mode 2.

06
Site:	Grand Gulf
Report	IR 05000416/2018002 Section 4OA2
Date counted	Jun 30, 2018 (2018Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	Self-revealing
Inspection Procedure:	IP 71152
Inspectors (proximate)	T Steadham C Roettgen N Day R Azua A Athar N Greene J O'Donnell C Newport M Bloodgood J Kozai
Violation of:	10 CFR 50 Appendix B Criterion XVI
CCA	P.2, Evaluation
INPO aspect	PI.2
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v • d • e

Finding - Grand Gulf - IR 05000416/2018002

1(5)2(8)3(2)4(0)5(0)6(0)10(0)40(0)50(0)201(1)403(0)404(0)

IR 05000416/2018002: 1 2 3 4 5 6 7 8

Finding List (Grand Gulf) @ 2018Q2

CCA Matrix: 2018Q2

	Q	CCA	Title
05000416/FIN-2017012-02	2017Q3	P.3	Failure to Operate the Gaseous Radwaste System Within Design Specifications
05000416/FIN-2017003-01	2017Q3	H.2	Isolation of Reactor Core Isolation Cooling System during Surveillance Testing
05000416/FIN-2017012-01	2017Q3	P.3	Failure to Correct Instrument Calibration Process in a Timely Manner
05000416/FIN-2017007-02	2017Q4	H.8	Failure to Correct Standby Diesel Generator Trip
05000416/FIN-2017007-03	2017Q4	H.5	Failure to Establish a Preventive Maintenance Procedure for Safety -Related Equipment
05000416/FIN-2017007-04	2017Q4		Failure to Update the Final Safety Analys is Report
05000416/FIN-2017007-05	2017Q4		Failure to Update a Calculation and Procedure to Address Standby Service Water Passive Failure
05000416/FIN-2017007-06	2017Q4		Failure to Ensure Adequate Design Control Measures Are in Place Associated with Leakage Control Systems
05000416/FIN-2017014-01	2017Q4		Inappropriate Proctoring of Training Examinations
05000416/FIN-2017014-02	2017Q4		Failure to Perform Operator Rounds
05000416/FIN-2017014-03	2017Q4		Falsification of Operator Rounds Records
05000416/FIN-2017011-04	2018Q1		Failure to Install the Residual Heat Removal Pump A Mechanical Seal in Accordance with Procedures
05000416/FIN-2018001-04	2018Q1		Inadequate Procedural Guidance which Resulted in Undemanded Control Valve Movements and Manual Scram
05000416/FIN-2018001-03	2018Q1		Inadequate Procedural Guidance Which Resulted in Control Room Air Conditioning Inoperability
05000416/FIN-2018001-02	2018Q1		Failure to Follow Procedure when Returning Containment Airlock to Operable Status
05000416/FIN-2018001-01	2018Q1		Failure to Promptly Correct Lube Oil Leak on Division 2 Diesel Generator
05000416/FIN-2017011-06	2018Q1		Failure to Perform Functionality Assessments as Required by Procedures
05000416/FIN-2017011-05	2018Q1		Failure to Correct Control Room Boundary Door Resulted in Loss of Safety Function
05000416/FIN-2017011-03	2018Q1		Failure to Conduct Common Cause Failure Evaluation in Response to Inoperable Emergency Diesel Generator
05000416/FIN-2017011-02	2018Q1		Failure to Disposition Adverse Conditions as Required by Procedures
05000416/FIN-2017011-01	2018Q1		Failure to Categorize Condition Reports for Significant Conditions Adverse to Quality as Required by Procedures
05000416/FIN-2018002-01	2018Q2	P.2	Failure to Institute Effective Corrective Action to Preclude Repetition
05000416/FIN-2018002-02	2018Q2	H.5	Failure to Follow ASME Requirements for Maintaining Inservice Inspection (ISI) Cycles and Perform ASME Required Inservice Inspections within the Scheduled ISI Cycle
05000416/FIN-2018002-03	2018Q2		Failure to Adequately Test NUS Temperature Switch
05000416/FIN-2018002-04	2018Q2	H.8	High Radiation Area Boundary Violation
05000416/FIN-2018002-05	2018Q2	H.12	Failure to Follow Procedure Requirements Resulting in Unplanned Dose
05000416/FIN-2018002-06	2018Q2	P.2	Improper Evaluation and Resolution of Intermediate Range MonitorNoise Leads to Manual Reactor Shutdown
05000416/FIN-2018002-07	2018Q2	H.12	Loss of Shutdown Cooling
05000416/FIN-2018002-08	2018Q2	H.5	Performance of Surveillance Testing Following Maintenance on Containment Airlock

Self-Identified List (Grand Gulf)

	Q	Title
05000416/FIN-2017003-02	2017Q3	Licensee-Identified Violation
05000416/FIN-2017007-08	2017Q4	Licensee-Identified Violation
05000416/FIN-2017007-07	2017Q4	Licensee-Identified Violation
05000416/FIN-2018001-05	2018Q1	Licensee-Identified Violation

[Grand Gulf Findings full list]

05000416/FIN-2018002-06

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