05000416/FIN-2017011-05

Finding

Title

Failure to Correct Control Room Boundary Door Resulted in Loss of Safety Function

Description

The inspectors reviewed a self-revealed, non-cited violation of 10 CFR Part 50, Criterion XVI, Corrective Action, for the licensees failure to appropriately correct a condition adverse to quality. Specifically, the control room envelope door had been documented in several condition reports for not consistently working properly. Subsequent to these condition reports, on July 9, 2017, the door was opened and did not close automatically, and therefore the door was left in an unsecured position. The licensee entered this issue into their corrective action program as Condition Report CR-GGN-2017-06705. The licensee restored compliance by securing the door and replacing the hinge bushings to ensure the door would close properly. The failure to correct a condition adverse to quality for a control room envelope boundary door was a performance deficiency. The performance deficiency was more than minor, and therefore a finding, because it was associated with the structures, systems, and components and barrier performance attribute of the Barrier Integrity Cornerstone and adversely affected the cornerstone objective to provide reasonable assurance that physical design barriers (functionality of the control room) protect the public from radionuclide releases caused by accidents or events. Specifically, on July 9, 2017, since the licensee had not corrected the adverse conditions identified on the control room envelope door, the door was left in an unsecured position and resulted in the station declaring both trains of standby fresh air inoperable. Using Nuclear Regulatory Commission Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, and Nuclear Regulatory Commission Inspection Manual Chapter 0609, Appendix A, Exhibit 3, Barrier Integrity Screening Questions, the inspectors determined that the finding was of very low safety significance (Green) because the finding did not represent a degradation of the radiological barrier function provided for the control room, auxiliary building, spent fuel pool, or standby gas treatment system, and did not represent a degradation of the barrier function of the control room against smoke or a toxic atmosphere. The period of the barrier in the open position was of short duration, approximately 1 minute, and therefore did not result in significant risk input. This finding had a cross-cutting aspect in the area of problem identification and resolution, resolution, because the licensee did not take corrective actions in a timely manner commensurate with their safety significance. Specifically, the licensee did not ensure proper priority of corrective actions on the degraded control room envelope boundary door [P.3].

05
Site:	Grand Gulf
Report	IR 05000416/2017011 Section 4OA2
Date counted	Mar 31, 2018 (2018Q1)
Type:	NCV: Green
cornerstone	Barrier Integrity
Identified by:	Self-revealing
Inspection Procedure:	IP 71152
Inspectors (proximate)	R Azua L Micewski W Sifre C Speer M Young T Hipschman
Violation of:	10 CFR 50 Appendix B Criterion XVI
INPO aspect	PI.3
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Finding - Grand Gulf - IR 05000416/2017011

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 05000416/2017011: 1 2 3 4 5 6

Finding List (Grand Gulf) @ 2018Q1

CCA Matrix: 2018Q1

	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-2017014-03	2017Q4		Falsification of Operator Rounds Records
05000416/FIN-2017014-02	2017Q4		Failure to Perform Operator Rounds
05000416/FIN-2017014-01	2017Q4		Inappropriate Proctoring of Training Examinations
05000416/FIN-2017007-06	2017Q4		Failure to Ensure Adequate Design Control Measures Are in Place Associated with Leakage Control Systems
05000416/FIN-2017007-05	2017Q4		Failure to Update a Calculation and Procedure to Address Standby Service Water Passive Failure
05000416/FIN-2017007-04	2017Q4		Failure to Update the Final Safety Analys is Report
05000416/FIN-2017007-03	2017Q4	H.5	Failure to Establish a Preventive Maintenance Procedure for Safety -Related Equipment
05000416/FIN-2017007-02	2017Q4	H.8	Failure to Correct Standby Diesel Generator Trip
05000416/FIN-2017011-01	2018Q1		Failure to Categorize Condition Reports for Significant Conditions Adverse to Quality as Required by Procedures
05000416/FIN-2017011-02	2018Q1		Failure to Disposition Adverse Conditions as Required by Procedures
05000416/FIN-2017011-03	2018Q1		Failure to Conduct Common Cause Failure Evaluation in Response to Inoperable Emergency Diesel Generator
05000416/FIN-2017011-04	2018Q1		Failure to Install the Residual Heat Removal Pump A Mechanical Seal in Accordance with Procedures
05000416/FIN-2017011-05	2018Q1		Failure to Correct Control Room Boundary Door Resulted in Loss of Safety Function
05000416/FIN-2017011-06	2018Q1		Failure to Perform Functionality Assessments as Required by Procedures
05000416/FIN-2018001-01	2018Q1		Failure to Promptly Correct Lube Oil Leak on Division 2 Diesel Generator
05000416/FIN-2018001-02	2018Q1		Failure to Follow Procedure when Returning Containment Airlock to Operable Status
05000416/FIN-2018001-03	2018Q1		Inadequate Procedural Guidance Which Resulted in Control Room Air Conditioning Inoperability
05000416/FIN-2018001-04	2018Q1		Inadequate Procedural Guidance which Resulted in Undemanded Control Valve Movements and Manual Scram

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-2017011-05

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