05000458/FIN-2016002-01

Finding

Title

Failure to Follow Station Guidance on Use of Temporary Power Cables and Control of Transient Combustibles

Description

The inspectors identified a non-cited violation of Technical Specification 5.4.1.a, for the licensees failure to follow station maintenance procedures related to the use of temporary power cables and storage of transient combustible materials in the auxiliary building. Specifically, the licensee installed energized networking equipment and an associated power cable within one foot of a safety-related cable tray. The station did not initially correct the problem, but later resolved the deficiencies by removing the networking equipment and power cable. The failure to initially correct the issue is documented as a violation in Section 4OA2 of this report. The licensee entered this issue into their corrective action program as Condition Report CR-RBS-2016-02398. The licensees installation of energized networking equipment and an associated power cable within one foot of a safety-related cable tray was a performance deficiency. The performance deficiency was more than minor, and therefore a finding, because it affected the protection against external factors 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, a fire resulting from this energized equipment would impact the availability, reliability, and capability of the low pressure core spray system, residual heat removal system, component cooling primary system, and reactor core isolation cooling system. The inspectors performed the initial significance determination using NRC Inspection Manual Chapter 0609, Attachment 4, Initial Characterization of Findings. Since the finding involved a failure to adequately implement fire prevention and administrative controls for transient combustibles, the inspectors dispositioned the finding using NRC Inspection Manual Chapter 0609, Appendix F, Fire Protection Significance Determination Process. In accordance with Manual Chapter 0609, Appendix F, Question 1.3.1.A, the inspectors determined that the finding was of very low safety significance (Green) because the reactor would be able to reach and maintain safe shutdown since the safe shutdown path was deemed independent of fire damage state scenarios for the given fire ignition source. The finding had a cross-cutting aspect in the area of human performance, work management, because the licensees work management processes failed to plan, control, and execute the work activity that included installation of temporary equipment such that impacts on nuclear safety were properly evaluated and addressed [H.5].

01
Site:	River Bend
Report	IR 05000458/2016002 Section 1R05
Date counted	Jun 30, 2016 (2016Q2)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	NRC identified
Inspection Procedure:	IP 71111.05
Inspectors (proximate)	B Parks F Ramirez G Warnick J Sowa L Brookhart M Phalen P Hernandez
Violation of:	Technical Specification - Procedures
CCA	H.5, Work Management
INPO aspect	WP.1
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Finding - River Bend - IR 05000458/2016002

1(0)2(3)3(0)4(0)5(0)6(0)7(3)9(4)10(0)11(0)12(0)201(1)301(0)401(0)402(0)403(0)404(6)405(0)406(0)407(0)501(0)

IR 05000458/2016002: 1 2 3

Finding List (River Bend) @ 2016Q2

CCA Matrix: 2016Q2

	Q	CCA	Title
05000458/FIN-2015008-04	2015Q3	H.1	Failure to Identify an Adverse Trend in the Performance of Post Maintenance Testing on High Critical Components
05000458/FIN-2015008-03	2015Q3	H.2	Failure to Preclude Repetition of Consequential Gaps in Operator Performance
05000458/FIN-2015405-01	2015Q3		Security
05000458/FIN-2015003-01	2015Q3	H.12	Failure to Operate the Unit 1 Feedwater System In Accordance With Procedures
05000458/FIN-2015008-01	2015Q3	H.1	Failure to Recognize Violations of Contamination Control Requirements as Adverse Conditions
05000458/FIN-2015008-02	2015Q3	H.9	Failure to Promptly Document Adverse Conditions in the Corrective Action Program
05000458/FIN-2015403-01	2015Q4		Security
05000458/FIN-2015007-02	2015Q4		Failure to Obtain Prior NRC Approval for a Change in Reactor Core Isolation Cooling Injection Point
05000458/FIN-2015007-01	2015Q4	P.1	Failure to Establish Adequate Procedures for Severe Weather Operations
05000458/FIN-2015004-01	2015Q4	H.8	Failure to Ensure Work Hours are Within Work Hour Limits
05000458/FIN-2015004-02	2015Q4	H.3	Failure to Properly Implement Surveillance Testing of Penetration Valve Leakage Control System Leads to Inoperability in Excess of Technical Specification Allowed Outage Time
05000458/FIN-2015004-03	2015Q4	H.5	Failure to Conduct Operations and Control Work Practices to Minimize Residual Radioactivity into the Site, including the Subsurface
05000458/FIN-2015004-05	2015Q4	H.12	Failure to Follow Procedure Results in Inadvertent Draindown of Reactor Pressure Vessel
05000458/FIN-2015004-06	2015Q4	H.8	Failure to Restore Main Steam Positive Leakage Control System to Operable Prior to Changing Modes
05000458/FIN-2015004-04	2015Q4		Failure to Make a Notification to NRC Operations Center Regarding a Radioactive Spill Reported to Another Government Agency
05000458/FIN-2015010-02	2016Q1	H.1	Failure to Adequately Assess Risk During Chiller Unavailability
05000458/FIN-2015010-01	2016Q1		Technical Specification Allowed Outage Time During Loss of Non-Technical Specification Supported Systems
05000458/FIN-2015010-04	2016Q1	H.14	Failure to Accomplish an Operability Determination In Accordance With Procedures
05000458/FIN-2016009-02	2016Q1		Failure to Establish Adequate Procedural Guidance
05000458/FIN-2016201-01	2016Q1		Security
05000458/FIN-2016009-03	2016Q1	P.2	Failure to Implement Corrective Actions to Prevent the Recurrence of a Reactor Scram Due to Grid Disturbances
05000458/FIN-2015010-03	2016Q1	P.5	Failure to Identify and Correct Circuit Breaker Failure Mechanism
05000458/FIN-2016009-04	2016Q1	H.14	Failure to Adequately Assess Risk During Motor Generator Set Unavailability
05000458/FIN-2016009-01	2016Q1	H.2	Failure to Follow Procedure While Installing Jumpers for Shutdown Cooling
05000458/FIN-2015010-05	2016Q1	H.12	Failure to Identify and Correct an Adverse Condition in a Timely Manner
05000458/FIN-2016007-03	2016Q2		Failure to Demonstrate that Appendix R Emergency Lights Satisfied their Maintenance Rule Performance Criteria
05000458/FIN-2016007-02	2016Q2		Failure to Isolate Control Circuits for Safe Shutdown Equipment From the Effects of a Control Room Fire
05000458/FIN-2016007-01	2016Q2		Inadequate Loop Flow Test Procedure
05000458/FIN-2016002-03	2016Q2	H.4	Failure to Identify and Correct Improperly Stowed Transient Combustibles
05000458/FIN-2016002-02	2016Q2	H.13	Failure to Conduct Common Cause Failure Evaluation in Response to Inoperable Emergency Diesel Generator
05000458/FIN-2016002-01	2016Q2	H.5	Failure to Follow Station Guidance on Use of Temporary Power Cables and Control of Transient Combustibles

Self-Identified List (River Bend)

	Q	Title
05000458/FIN-2015003-02	2015Q3	Licensee-Identified Violation
05000458/FIN-2015007-03	2015Q4	Licensee-Identified Violation
05000458/FIN-2015004-07	2015Q4	Licensee-Identified Violation
05000458/FIN-2015403-02	2015Q4	Licensee-Identified Violation

[River Bend Findings full list]

05000458/FIN-2016002-01

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