22^nd Annual Report by the Diablo Canyon Independent Safety Committee (DCISC), July 1, 2011 – June 30, 2012
Preface | Executive Summary
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22^nd Annual Report, Volume II, Table of Contents–Exhibits

A. Documents Received By the DCISC

B. DCISC Public Meeting Notices, Agendas and Reports

• B.1 Notice of October 11–12, 2011 Public Meetings
• B.2 Agenda for October 11–12, 2011 Public Meetings
• B.3 Minutes of October 11–12, 2011 Public Meetings
• B.4 Notice of February 8–9, 2012 Public Meetings
• B.5 Agenda for February 8–9, 2012 Public Meetings
• B.6 Minutes of February 8–9, 2012 Public Meetings
• B.7 Notice of June 19–20, 2012 Public Meetings
• B.8 Agenda for June 19–20, 2012 Public Meetings
• B.9 Minutes of June 19–20, 2012 Public Meetings
• B.10 DCISC Service Mailing List

C. Diablo Canyon Operations

• 1.0 PG&E/DCPP Organization
• 2.0 Summary of Diablo Canyon Operations

• 2.0.1 Operating Capacity Factor
• 2.0.2 Refueling Outages
• 2.0.3 Collective Radiation Dose Equivalent Exposure
• 2.0.4 Unplanned Reactor Trips
• 2.0.5 Unplanned Safety System Actuations
• 2.0.6 Chemistry Effectiveness Indicator
• 2.0.7 Fuel Reliability

D. DCISC Reports on Fact-finding Meetings

D.1 Report on Fact Finding Meeting at DCPP on July 12–13, 2011

• 1.0 Summary
• 2.0 Introduction

• 3.1 Outage Clearance Performance
• 3.2 NRC Senior Resident Inspector Concerns
• 3.3 NRC Fatigue Management Implementation
• 3.4 Annual Radiological Release Reports
• 3.5 Single Point Vulnerabilities
• 3.6 Unit 2 Reactor Manual Trip
• 3.7 Time Critical Operator Actions
• 3.8 Component Cooling Water System Review
• 3.9 DCISC Member Meet with DCPP Officer
• 3.10 Component Mispositioning

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

D.2 Report on Fact Finding Meeting at DCPP on August 16–17, 2011

• 1.0 Summary
• 2.0 Introduction

• 3.1 Tsunami and Seismic Update
• 3.2 Plant Health Committee
• 3.3 Santa Barbara County Emergency Planning
• 3.4 NFPA 805 Implementation Progress
• 3.5 Licensed Operator Continuing Training
• 3.6 Equipment Reliability
• 3.7 Training Oversight Committee
• 3.8 2010 Annual Radiological Release and Environmental Monitoring Reports
• 3.9 Second Quarter 2011 Quality Verification Site Status Report
• 3.10 Premier Survey
• 3.11 Bob Budnitz Meeting with Ken Peters, Vice-President of Engineering
• 3.12 Operator “No Solo” Status
• 3.13 Reactivity Management

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

D.3 Report on Fact Finding Meeting at DCPP on September 7–8, 2011

• 1.0 Summary
• 2.0 Introduction

• 3.1 Operations Use of Probabilistic Risk Assessment/Safety Monitor
• 3.2 Critical Equipment Clock Resets
• 3.3 Summary of Benchmarking Activities
• 3.4 Auxiliary Feedwater System Review
• 3.5 EDG System Review
• 3.6 Containment Inspections
• 3.7 Large Transformer Update
• 3.8 DCISC Member Meet with DCPP Officer
• 3.9 Problem Evaluation Action Plan and Engineering Staffing
• 3.10 Status of Engineering Organization
• 3.11 Update on Fukushima Actions
• 3.12 Meeting with NRC Senior Resident Inspector
• 3.13 Quality Verification Assessment of Primary Equipment and Support Load Combinations Regarding Seismicity
• 3.14 Status of Performance Improvement Action Plan

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

D.4 Report on Fact-finding Meeting at DCPP November 15–16, 2011

• 1.0 Summary
• 2.0 Introduction

• 3.1 Meeting with NRC Senior Resident Inspector
• 3.2 Maintenance Services
• 3.3 Self-Assessment Program
• 3.4 Licensing Basis Verification Project
• 3.5 Stranded Plant Procedure
• 3.6 Auxiliary Feedwater Pumps
• 3.7 Nuclear Fuel
• 3.8 DCISC Member Meeting with Site Vice-President

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

D.5 Report on Fact Finding Meeting at DCPP on December 13–15, 2011

• 1.0 Summary
• 2.0 Introduction

• 3.1 Machine Vibration Monitoring
• 3.2 Three Losses of 230 kV during Outage 2R16
• 3.3 Compressed Air System
• 3.4 Update on the DCPP Responses and Actions on the Fukushima Accident
• 3.5 Engineering Rigor Action Plan Status
• 3.6 Observation and Coaching Program
• 3.7 Trouble-Shooting Program
• 3.8 EPA Closed Cooling Update
• 3.9 DCPP Progress in Addressing INPO Evaluation Items
• 3.10 Experience with the New Reactor Vessel Head Assembly
• 3.11 Safety–Security Interface Process
• 3.12 DCISC Member Meeting with Station Director

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

D.6 Report on Fact Finding Meeting at DCPP on January 10–11, 2012

• 1.0 Summary
• 2.0 Introduction

• 3.1 Status of Backlogs/Trends for Revisions to Operations, Maintenance, and Engineering Procedures
• 3.2 Nuclear Safety Culture
• 3.3 Quality Verification’s Assessment of Station Operation and Most Recent Quality Performance Assessment Report
• 3.4 Meeting with NRC Resident Inspector
• 3.5 Foreign Material Exclusion Issues/Trends
• 3.6 Operation of the Turbine Driven Auxiliary Feedwater Pump during Station Blackout Conditions
• 3.7 Results of Operator Licensing Examinations in 2011
• 3.8 2012 Operating Plan and 2011 Performance
• 3.9 On-line Maintenance and Risk Management
• 3.10 DCISC Member Meeting with Director of Site Services

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

D.7 Report on Fact Finding Meeting at DCPP on March 13–14, 2012

• 1.0 Summary
• 2.0 Introduction

• 3.1 Trends of NRC Non-Cited Violations and Allegations
• 3.2 Unified Dose Assessment Center Process Interface Weakness
• 3.3 Outage 1R17 Safety Plan
• 3.4 Vital DC Power Crosstie
• 3.5 Meet with NRC Resident Inspector
• 3.6 Operational Decision-Making
• 3.7 Eagle 21 Replacement Project
• 3.8 Containment Fan Cooler Units Anti-Rotation Modification Performance
• 3.9 Control Room Ventilation System
• 3.10 Human Performance Line Ownership Action Plan
• 3.11 Emergency Response Organization Drill
• 3.12 DCISC Member Meeting with Station Director

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

D.8 Report on Fact Finding Meeting at DCPP on April 3–4, 2012

• 1.0 Summary
• 2.0 Introduction

• 3.1 Emergency Preparedness Support to External Organizations
• 3.2 NRC P.1(c) Substantive Cross-cutting Issue
• 3.3 Non-outage Human Error Rate
• 3.4 NFPA 805 Update
• 3.5 Probabilistic Risk Assessment Group Update
• 3.6 Loose ISFSI Hold-down Bolts
• 3.7 Operations “Block and Tackle” Update
• 3.8 Observe Plant Health Committee
• 3.9 Performance Improvement Station Initiative
• 3.10 Meet New Chief Nuclear Officer, Ed Halpin
• 3.11 Differing Professional Opinion Program
• 3.12 DCISC Member Meet with Site VP

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

D.9 Report on Fact Finding Meeting at DCPP on May 22–23 2012

• 1.0 Summary
• 2.0 Introduction

• 3.1 MIDAS Update
• 3.2 Electrical Clearance Apparent Cause Evaluation
• 3.3 Health of DCPP Steam Generators
• 3.4 Outage 1R17 Plant Tour
• 3.5 Outage Coordination Center Meeting
• 3.6 High Pressure Injection System Review
• 3.7 Office & Workspace Seismic Safety Update
• 3.8 Fukushima Update
• 3.9 DCISC Open Items List
• 3.10 Component Misposition Prevention Team
• 3.11 DCISC Member Meet with Site VP

• 4.0 Conclusions
• 5.0 Recommendations
• 6.0 References

E. Record of DCISC Tours of DCPP

F. DCISC Open Items List

G. DCISC Public Contacts

• G.1 DCISC Telephone/Correspondence Log (PDF)
• G.2 DCISC Correspondence (PDF)
• G.3 Comments Received at Public Meetings

H. Past DCISC Recommendations and PG&E Responses

I. DCISC Informational Brochure (PDF)

J. Glossary of Terms

For more information contact:

Diablo Canyon Independent Safety Committee
Office of the Legal Counsel
857 Cass Street, Suite D, Monterey, California 93940
Telephone: in California call 800-439-4688; outside of California call 831-647-1044
Send E-mail to: dcsafety@dcisc.org.