05000382/FIN-2015002-01

Finding

Title

Failure to Identify and Secure Potential Tornado-Borne Missile Hazards

Description

The inspectors identified a non-cited violation of Technical Specification 6.8.1.a and Regulatory Guide 1.33, Revision 2, Appendix A, for the licensees failure to follow procedure OP-901-521, Severe Weather and Flooding, Revision 313. Specifically, on April 24, 2015, the licensee failed to assess and control potential tornado-borne missile hazards on-site as required by the procedure. The licensee entered this condition into their corrective action program as condition report CR-WF3-2015-02556. The licensee restored compliance by securing the identified hazards. This finding was more than minor because it was associated with the protection against external factors attribute of the Initiating Events cornerstone and adversely affected the cornerstone objective of limiting the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. Specifically, in the event of a tornado at the site, the loose items could have become missiles with the potential to initiate a loss of off-site power adversely impacting safety-related equipment and personnel. The inspectors performed the initial significance determination for the finding using NRC Inspection Manual Chapter 0609, Appendix A, Exhibit 4, External Event Screening Questions, dated June 12, 2012. The finding required a detailed evaluation because it had the potential to degrade at least one train of a system that supports a risk significant system or function. Therefore, a senior reactor analyst performed a bounding detailed risk evaluation. The analyst determined that the finding was of very low safety significance (Green). The bounding change to the core damage frequency was less than 1.1E-7/year. The finding was not significant with respect to the large early release frequency. The dominant core damage sequences included tornado induced losses of off-site power, and random and common cause diesel generator failures. The ability to recover the diesel generators helped to minimize the significance of the event. The finding has a Resolution cross-cutting aspect in the area of Problem Identification and Resolution, because the licensee did not take effective corrective actions to address issues in a timely manner commensurate with their safety significance. Specifically, the licensee did not take effective corrective actions to address the issue after the inspectors identified it during previous tornado watches in 2013 and 2014.

01
Site:	Waterford
Report	IR 05000382/2015002 Section 1R01
Date counted	Jun 30, 2015 (2015Q2)
Type:	NCV: Green
cornerstone	Initiating Events
Identified by:	NRC identified
Inspection Procedure:	IP 71111.01
Inspectors (proximate)	B Hagar C Speer C Steely C Young E Uribe F Ramirez G Guerra G Miller P Elkmann T Sullivan
Violation of:	Technical Specification - Procedures Technical Specification
CCA	P.3, Resolution
INPO aspect	PI.3
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v • d • e

Finding - Waterford - IR 05000382/2015002

1(4)2(2)3(2)4(1)5(0)6(0)7(5)8(3)10(0)11(3)201(2)301(0)401(0)402(0)403(1)404(1)405(1)406(3)407(2)501(0)

IR 05000382/2015002: 1 2

Finding List (Waterford) @ 2015Q2

CCA Matrix: 2015Q2

	Q	CCA	Title
05000382/FIN-2014404-04	2014Q3		Security
05000382/FIN-2014404-03	2014Q3		Security
05000382/FIN-2014404-02	2014Q3		Security
05000382/FIN-2014404-01	2014Q3		Security
05000382/FIN-2014005-01	2014Q4	H.2	Failure to Identify and Control Potential Tornado-Borne Missile Hazards
05000382/FIN-2014005-05	2014Q4	H.5	Failure to Adequately Plan and Control Work Activities Related to Alloy 600 Pipe Weld Inspections to Ensure Doses were ALARA
05000382/FIN-2014005-04	2014Q4	H.11	Failure to Establish Design Control Measures for the Suitability of Safety-Related Relays
05000382/FIN-2014005-02	2014Q4	H.13	Failure to Follow the Operability Determination Process
05000382/FIN-2014005-06	2014Q4	H.14	Failure to Correct a Condition Adverse to Quality in a Timely Manner
05000382/FIN-2014005-03	2014Q4	P.1	Failure to Establish an Inspection Schedule of the Dry Cooling Towers
05000382/FIN-2015001-03	2015Q1	H.1	Failure to Develop the Transportation Security Plan
05000382/FIN-2014007-04	2015Q1		Failure to Evaluate Missile Protection Requirements for Emergency Diesel Generator Day and Storage Tank Vents
05000382/FIN-2014007-03	2015Q1	H.5	Failure to Initiate a Condition Report for a Condition Adverse to Quality
05000382/FIN-2014007-02	2015Q1	H.4	Inadequate Station Procedures for Temporary Emergency Diesel Generator
05000382/FIN-2014007-01	2015Q1	P.4	Failure to Identify and Evaluate Elevated Bus Voltages
05000382/FIN-2014007-06	2015Q1		Failure to Properly Evaluate Main Feedwater Isolation Valve Required Thrust
05000382/FIN-2014007-07	2015Q1		Failure to Properly Evaluate Main Steam Isolation Valve Weak Link
05000382/FIN-2015405-01	2015Q1		Security
05000382/FIN-2015001-04	2015Q1		Inadequate Procedure for Tightening Thermal Overload Connections for Safety-Related Components
05000382/FIN-2015001-02	2015Q1	H.12	Failure to Identify and Correct a Condition Adverse to Fire Protection
05000382/FIN-2015001-01	2015Q1		Failure to Identify and Perform Testing of Safety-Related Dry Cooling Tower Tube Bundle Isolation Valves
05000382/FIN-2014007-05	2015Q1	H.8	Failure to Identify and Correct Through Wall Corrosion on Emergency Diesel Generator A and B Day Tank Vents
05000382/FIN-2015011-01	2015Q2		Failure to Implement Proper Control of Fire Protection Impairments
05000382/FIN-2015011-02	2015Q2		Failure to Maintain Complete and Accurate Information for the Fire Protection Program
05000382/FIN-2015011-03	2015Q2		Failure to Maintain Complete and Accurate Information for the Access Authorization Program
05000382/FIN-2015007-05	2015Q2		Violation of Technical Specification 6.8.1.f for the failure to implement and maintain adequate written procedures covering fire protection program implementation
05000382/FIN-2015002-02	2015Q2	H.2	Failure to Follow Instructions in Painting Procedure while Painting on Safety-Related Equipment
05000382/FIN-2015007-04	2015Q2	P.3	Failure to Correct Long Standing Deficiencies with the Appendix R Emergency Lighting Units
05000382/FIN-2015007-03	2015Q2		Failure to Periodically Test Emergency Lighting Units
05000382/FIN-2015007-02	2015Q2	P.3	Failure to Provide a Bounding Calculation for Time Critical Actions
05000382/FIN-2015007-01	2015Q2		Inadequate Fire Area Boundary
05000382/FIN-2015002-01	2015Q2	P.3	Failure to Identify and Secure Potential Tornado-Borne Missile Hazards
05000382/FIN-2015201-02	2015Q2		Security
05000382/FIN-2015201-01	2015Q2		Security

Self-Identified List (Waterford)

	Q	Title
05000382/FIN-2014005-07	2014Q4	Licensee-Identified Violation
05000382/FIN-2014011-01	2014Q4	Licensee-Identified Violation
05000382/FIN-2015404-01	2015Q2	Licensee-Identified Violation

[Waterford Findings full list]

05000382/FIN-2015002-01

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