05000416/FIN-2015007-01

Finding

Title

Failure to Ensure Safety-Related Alternating Current and Direct Current Equipment Operability and Functionality at Maximum Allowable Voltage Levels

Description

The team identified two examples of a Green, non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control, which states, in part, design control measures shall provide for verifying or checking the adequacy of design, such as by the performance of design reviews, by the use of alternate or simplified calculational methods, or by the performance of a suitable testing program. Specifically, prior to September 3, 2015, the licensee failed to verify or check the adequacy of: (1) Safety-related motors and control power circuits fed from Division III 480 V ac emergency safety feature bus 17B01, which were not designed or analyzed to operate using higher voltage ranges that are supplied to the safety-related buses; and (2) safety-related equipment connected to the 125 V dc system were not verified for satisfactory operation at elevated equalizing voltage of 140 V dc. In response to this issue, the licensee performed an operability determination which determined that the condition would reduce the life of the equipment but not cause spurious malfunctions. This finding was entered into the licensees corrective action program as Condition Reports CR-GGN-2015-4413 and CR-GGN-2015-5130. The team determined that the licensees failure to assure that allowable high voltage conditions are within alternating and direct current equipment ratings was a performance deficiency. This performance deficiency was more than minor, and therefore a finding, because it was associated with the equipment performance attribute of the Mitigating Systems cornerstone and adversely affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the operation of the equipment outside of its equipment ratings adversely affects the reliability of safety-related equipment. In accordance with Inspection Manual Chapter 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power, dated June 19, 2012, Exhibit 2, Mitigating Systems Screening Questions, the finding was determined to have very low safety significance (Green) because it was a design or qualification deficiency that did not -3- Attachment represent a loss of operability or functionality; did not represent an actual loss of safety function of the system or train; did not result in the loss of one or more trains of nontechnical specification equipment; and did not screen as potentially risk significant due to seismic, flooding, or severe weather. This finding did not have a crosscutting aspect because the most significant contributor did not reflect current licensee performance.

01
Site:	Grand Gulf
Report	IR 05000416/2015007 Section 1R21
Date counted	Dec 31, 2015 (2015Q4)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.21
Inspectors (proximate)	D Loveless H Leake J Watkins L Brandt R Latta T Farnholtz W Sherbin J Mchugh
Violation of:	10 CFR 50 Appendix B Criterion III, Design Control
INPO aspect
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v • d • e

Finding - Grand Gulf - IR 05000416/2015007

1(6)2(5)3(1)4(6)5(0)6(0)7(11)8(4)201(6)301(1)402(0)403(0)404(3)405(4)406(1)501(0)

IR 05000416/2015007: 1 2 3 4 5 6 7 8 9 10 11

Finding List (Grand Gulf) @ 2015Q4

CCA Matrix: 2015Q4

	Q	CCA	Title
05000416/FIN-2015001-02	2015Q1	H.12	Failure to Follow a Procedure Resulting in the Unplanned Inoperability of the Reactor Core Isolation Cooling System
05000416/FIN-2015001-05	2015Q1	H.8	Failure to Establish, Implement, and Maintain Appropriate Changes to the Offsite Dose Calculation Manual For REMP Airborne Sampling
05000416/FIN-2015001-04	2015Q1	H.1	Failure to Properly Calibrate Main Steam Line Radiation Monitors and Containment/Drywall High Range Radiation Monitors
05000416/FIN-2015001-03	2015Q1	P.2	Emergency Action Level Scheme for Nonfunctional Seismic Monitor
05000416/FIN-2015201-06	2015Q1		Security
05000416/FIN-2015201-05	2015Q1		Security
05000416/FIN-2015201-04	2015Q1		Security
05000416/FIN-2015201-03	2015Q1		Security
05000416/FIN-2015201-02	2015Q1		Security
05000416/FIN-2015201-01	2015Q1		Security
05000416/FIN-2015001-01	2015Q1		Failure to Take Timely Corrective Actions Associated with Division 1 and 2 Standby Service Water Pump House Ventilation System Due to Degraded Relays
05000416/FIN-2015001-06	2015Q1		Failure to Adequately Establish Commercial-Grade Items as Basic Components
05000416/FIN-2015002-03	2015Q2		Failure to the Update the Final Safety Analysis Report after the Extended Power Uprate
05000416/FIN-2015002-04	2015Q2		Possible Loss of Communications Systems during Control Room Fire Scenarios
05000416/FIN-2015002-01	2015Q2	H.12	Failure to Have Appropriate Instructions Resulted in the Unplanned Unavailability of the Reactor Core Isolation Cooling System
05000416/FIN-2015002-02	2015Q2	H.12	Failure to Identify High Vibration on the Division 3 EDG Soak Back Oil Pump
05000416/FIN-2015405-01	2015Q3		Security
05000416/FIN-2015003-01	2015Q3		Failure to Have Appropriate Instructions for Preventative Maintenance on the Division II Diesel Generator Fuel Rack Control Lever
05000416/FIN-2015007-05	2015Q4		Failure to Maintain a Safety-Related Cable Tray Overfill Analysis Record
05000416/FIN-2015007-02	2015Q4	H.6	Failure to Ensure that Electrical Interrupting Devices are Rated for Available Fault Current Levels
05000416/FIN-2015004-03	2015Q4		Failure to Make a Required Eight-Hour Report for Loss of Safety Function
05000416/FIN-2015007-07	2015Q4		Failure to Update the Final Safety Analysis Report
05000416/FIN-2015008-03	2015Q4	H.12	Failure to Declare Secondary Containment Inoperable Based on Failed Surveillance Testing
05000416/FIN-2015404-03	2015Q4		Security
05000416/FIN-2015404-02	2015Q4		Security
05000416/FIN-2015404-01	2015Q4		Security
05000416/FIN-2015007-08	2015Q4		Incomplete and Inaccurate Response to NRC Bulletin 88-04
05000416/FIN-2015008-04	2015Q4		Failure to Make Required Event Notification
05000416/FIN-2015007-03	2015Q4	S.4(o)	Lack of Coordination of Division III HPCS Switchgear 127N Undervoltage Relays
05000416/FIN-2015007-01	2015Q4		Failure to Ensure Safety-Related Alternating Current and Direct Current Equipment Operability and Functionality at Maximum Allowable Voltage Levels
05000416/FIN-2015008-01	2015Q4	P.1	Failure to Enter a Condition Adverse to Quality into the Corrective Action Program
05000416/FIN-2015007-04	2015Q4	H.8	Failure to Identify and Address Impacts of Revised Calculation Output Data
05000416/FIN-2015007-06	2015Q4		Failure to Perform Surveillance Requirement 3.8.1.9
05000416/FIN-2015007-09	2015Q4		Failure to Obtain a License Amendment for Use of Probabilistic Methods to Evaluate Tornado Missile Hazards
05000416/FIN-2015007-10	2015Q4	P.6	Failure to Ensure Equipment Operability and Functionality of Allowable Alternating Current Frequency Range
05000416/FIN-2015007-11	2015Q4	H.12	Failure to Implement Equipment Control Procedures for Loose Items in Containment
05000416/FIN-2015004-04	2015Q4		Failure to Establish Adequate Maintenance Instructions to Perform Work Activities on the Division III Diesel Generator Overspeed Trip Limit Switch
05000416/FIN-2015004-02	2015Q4	H.14	Failure to Timely Enter Technical Specification Surveillance Requirement 3.0.1
05000416/FIN-2015004-01	2015Q4	H.6	Failure to Have Appropriate Instructions for Preventative Maintenance on the Division I Diesel Generator Simulated Run
05000416/FIN-2015301-01	2015Q4	H.8	Inadequate Plant Operating Procedures with Eight Examples
05000416/FIN-2015008-02	2015Q4	P.1	Failure to Promptly Initiate Condition Reports

Self-Identified List (Grand Gulf)

	Q	Title
05000416/FIN-2015002-05	2015Q2	Licensee-Identified Violation
05000416/FIN-2015405-02	2015Q3	Licensee-Identified Violation
05000416/FIN-2015405-03	2015Q3	Licensee-Identified Violation
05000416/FIN-2015405-04	2015Q3	Licensee-Identified Violation
05000416/FIN-2015406-01	2015Q3	Security
05000416/FIN-2015004-05	2015Q4	Licensee-Identified Violation
05000416/FIN-2015004-06	2015Q4	Licensee-Identified Violation

[Grand Gulf Findings full list]

05000416/FIN-2015007-01

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