05000275/FIN-2010005-08

Finding

Title

Licensee-Identified Violation

Description

Technical Specification 5.4.1.a required that the licensee establish, implement, and maintain written procedures covering the applicable activities recommended in Regulatory Guide 1.33, Revision 2, Appendix A, February 1978. Regulatory Guide 1.33 recommended procedures required for shutdown of pressurized water reactors. Contrary to this, Pacific Gas and Electric failed to properly implement procedures for shutdown, as required by Technical Specification 5.4.1.a. Specifically, on October 5, 2010, operators failed to follow Operating Procedure OP L-6, Cold Shutdown/Refueling, Step 5.9.6 and establish a reactor coolant system vent path before reducing reactor coolant system temperature below 90F. As a result, operators declared the Low Temperature Overpressure Protection System inoperable in accordance with Technical Specification 3.4.12 and restored temperature above 90F. Pacific Gas and Electric entered the issue into the corrective action program as Notification 50347713. Using Appendix G of Inspection Manual Chapter 0609, Shutdown Operations Significance Determination Process, the inspectors concluded this finding was of very low safety significance because the licensee maintained an adequate mitigation capability during shutdown and the issue did not require a quantitative assessment.

08
Site:	Diablo Canyon
Report	IR 05000275/2010005 Section 4OA7
Date counted	Dec 31, 2010 (2010Q4)
Type:	NCV: Green
cornerstone	Mitigating Systems
Identified by:	Licensee-identified
Inspection Procedure:
Inspectors (proximate)	E Wong P Goldberg L Ricketson M Brown M Peck C Graves R Kopriva D Allen C Osterholtz I Anchondo D Reinert C Alldredge B Latta
INPO aspect
'
v • d • e

Finding - Diablo Canyon - IR 05000275/2010005

1(0)2(6)3(4)4(5)5(12)6(5)7(11)8(0)201(7)301(0)402(2)403(2)501(0)

IR 05000275/2010005: 1 2 3 4 5 6 7 8 9 10 11 12

Finding List (Diablo Canyon) @ 2010Q4

CCA Matrix: 2010Q4

	Q	CCA	Title
05000275/FIN-2010402-02	2010Q1		Security
05000323/FIN-2009009-01	2010Q1	P.2	Failure to Follow Design and Configuration Control Requirements
05000323/FIN-2009009-02	2010Q1	P.2 P.1(a)	Failure to Conduct an Adequate Post-Modification Test
05000323/FIN-2009009-03	2010Q1	P.2	Failure to Evaluate a Change to the Facility as Described in the Final Safety Analysis Report Update Associated with the Addition of Manual Actions in the Safety Analysis
05000275/FIN-2010002-02	2010Q1	P.2	Failure to Update the Final Safety Analysis Report with the Current Plant Design Bases
05000275/FIN-2010002-03	2010Q1		Failure to Report a Condition That Could Have Prevented the Fulfillment of a Safety Function
05000275/FIN-2010002-05	2010Q1	P.2	Failure to Submit a LERE for a Common-Cause Inoperability of Independent Trains or Channels
05000275/FIN-2010002-04	2010Q1	P.2	Less Than Adequate Evaluation Following a Failure of Both Motor Driven Auxiliary Feedwater Trains
05000275/FIN-2010402-01	2010Q1		Security
05000275/FIN-2010002-01	2010Q1	P.3	Failure to Effectively Implement the Seismically-Induced Systems Interaction Program
05000275/FIN-2010003-02	2010Q2		Inadequate Corrective Actions Following Identification of a Nonconservative Technical Specification
05000275/FIN-2010007-03	2010Q2	H.14	Non-Conservative Decision Making resulted in a Violation of Technical Specification
05000275/FIN-2010003-01	2010Q2	P.2	Failure to Perform Unit 1 Containment Concrete Inspections
05000275/FIN-2010007-05	2010Q2	P.2	Inadequate Operability Determination Associated With the Offsite Degraded Voltage Protection Scheme
05000275/FIN-2010007-06	2010Q2		Second Level Undervoltage Relay Time Delay to Initiate Load Shed and Sequencing Upon the Diesel Generator is Adequate to Assure Plant Safety
05000275/FIN-2010007-08	2010Q2	P.2	Inadequate Drawings and Procedures to Align Emergency Makeup Water Supply from Diablo Canyon Creek to Support the Auxiliary Feedwater System
05000275/FIN-2010007-07	2010Q2		Nonconservative Inputs into Motor Operated Valve Calculation
05000275/FIN-2010007-10	2010Q2		Failure to Update Text to Reflect Credited Design Class I Makeup Flowpath to Component Cooling Water Expansion Tank in the Final Safety Analysis Report Update
05000275/FIN-2010007-09	2010Q2		Failure to Update Feedwater Rupture Accident Analysis in the Final Safety Analysis Report Update
05000275/FIN-2010007-04	2010Q2	P.2	Failure to Update the Final Safety Analysis Report Update with the Current Plant Design Bases Section
05000275/FIN-2010007-02	2010Q2	P.2	Failure to Adequately Evaluate Changes to the Diesel Testing as Described in the Final Safety Analysis Report Update
05000275/FIN-2010007-01	2010Q2	H.14	Less than Adequate Change Evaluation to the Facility as Described in the Final Safety Analysis Report Update
05000275/FIN-2010003-03	2010Q2	P.2	Failure to Report a Condition that Could Have Prevented the Fulfillment of a Safety Function
05000275/FIN-2010201-02	2010Q3	H.12	Security
05000275/FIN-2010004-05	2010Q3		Inadequate Design Control for the Auxiliary Saltwater System
05000275/FIN-2010004-04	2010Q3	P.2	Inadequate Operability Determination
05000275/FIN-2010004-03	2010Q3	H.8	Inadequate Risk Assessment during Planned Maintenance Activities
05000275/FIN-2010004-02	2010Q3	P.3	Inadequate Risk Management during a Planned Auxiliary Saltwater Pump Outage
05000275/FIN-2010004-01	2010Q3	P.1	Failure to Identify a Degraded Fire Barrier
05000275/FIN-2010201-06	2010Q3		Security
05000275/FIN-2010201-01	2010Q3	H.14	Security
05000275/FIN-2010201-03	2010Q3	P.6	Security
05000275/FIN-2010006-03	2010Q3	P.2	Failure to Submit Complete and Accurate Information for a Requested License Amendment
05000275/FIN-2010006-01	2010Q3	H.14	Inadequate Design Control for the Emergency Diesel Generator
05000275/FIN-2010006-02	2010Q3	H.14	Failure to Maintain Proficiency of Operators to Meet the Time Critical Operator Actions
05000275/FIN-2010006-04	2010Q3	H.14	Untimely and Inadequate Corrective Actions for the Emergency Diesel Generators
05000275/FIN-2010006-05	2010Q3	P.2	Failure to Appropriately Evaluate Failed Residual Heat Removal Surveillance Test
05000275/FIN-2010201-04	2010Q3		Security
05000275/FIN-2010403-01	2010Q3	P.1	Security
05000275/FIN-2010403-02	2010Q3		Security
05000275/FIN-2010201-05	2010Q3		Security
05000275/FIN-2010201-07	2010Q3		Security
05000275/FIN-2010005-07	2010Q4	P.6 P.3(c)	Inadequate Quality Verification Audits
05000275/FIN-2010005-03	2010Q4		Corrosion of Containment Fan Cooler Unit Cooling Coil Casings
05000275/FIN-2010005-01	2010Q4	P.3	Failure to Maintain a Fire Barrier
05000275/FIN-2010005-02	2010Q4	H.7	Inadequate Transient Combustibles Procedure
05000275/FIN-2010005-04	2010Q4	H.14	Inadequate Operability Determinations
05000275/FIN-2010005-05	2010Q4	H.7	Less than Adequate Containment Recirculation Sump Design Control
05000275/FIN-2010005-06	2010Q4	P.2	Inadequate Emergency Diesel Generator Surveillance Testing

Self-Identified List (Diablo Canyon)

	Q	Title
05000275/FIN-2010002-06	2010Q1	Licensee-Identified Violation
05000275/FIN-2010007-11	2010Q2	Licensee-Identified Violation
05000275/FIN-2010003-04	2010Q2	Licensee-Identified Violation
05000275/FIN-2010005-08	2010Q4	Licensee-Identified Violation
05000275/FIN-2010005-09	2010Q4	Licensee-Identified Violation
05000275/FIN-2010005-10	2010Q4	Licensee-Identified Violation
05000275/FIN-2010005-11	2010Q4	Licensee-Identified Violation
05000275/FIN-2010005-12	2010Q4	Licensee-Identified Violation

[Diablo Canyon Findings full list]

05000275/FIN-2010005-08

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