San Onofre Nuclear Generating Station FOIA Archive

Southern California Edison installed replacement steam generators (RSG) at the San Onofre Nuclear Generating Station (SONGS), located a mere 62 miles southeast of Los Angeles, both of which were fabricated by Mitsubishi Heavy Industries (MHI) in Japan at a $670 million price tag.

The San Onofre Nuclear Generating Station (SONGS) is a nuclear power plant located on the Pacific coast of California, in the northwestern corner of San Diego County, south of San Clemente. The site is surrounded by the San Onofre State Park and sits next to highway Interstate 5, and is well-known for the spherical containment buildings around the reactors.

The technical problems at San Onofre have plagued operators since construction as quoted in the July 12, 1982 edition of Time Magazine wrote, “The firm Bechtel was … embarrassed in 1977, when it installed a 420-ton nuclear-reactor vessel backwards” at San Onofre.

Unit 1, a first generation Westinghouse pressurized water reactor that operated for 25 years, closed permanently in 1992, and has been dismantled and is used as a storage site for spent fuel. It too had a spherical containment of concrete and steel with the smallest wall being 6 feet (1.8 m) thick.

Units 2 and 3 are Combustion Engineering pressurized water reactors have been shut down since January 2012 due to premature wear found on tubes in steam generators.  Unit 2 shut in early January 2012 for refueling and replacement of the reactor vessel head.

In March 2012, former nuclear power executive Arnold Gundersen of Fairewinds Associates, prepared a report that argued that “design modifications in the newly installed steam generators, such as different alloy for the tubes, led to problems at the plant”.

Cooling Regulations

Unlike many pressurized water reactors, but like some other seaside facilities in Southern California, the San Onofre plant uses seawater for cooling, and thus lacks the iconic large cooling towers typically associated with nuclear generating stations.

However, changes to water-use regulations may require construction of such cooling towers in the future to avoid further direct use of seawater. Limited available land next to SONGS would likely require towers to be built on the opposite side of Interstate 5.

SONGS Package

NRC letter to Boxer RE: Songs 03-13-2012

SONGS Meeting Slides

SONGS SG Return to Service Action Plan

Ml121280557 – Statement From Chairman Gregory Jaczko on San Onofre Restart

Steam Generators – Pages From March-April 2009 NPJ E-Version

Steam Generators – Pages From March-April 2009 NPJ E-Version-2

NRC Report August 2010 – MHI SG Issues

Augmented Inspection Team Charter to Evaluate the Steam Generator Tube Integrity Issues at San Onofre Nuclear Generating Station Unit 3

CONFIRMATORY ACTION LETTER – SAN ONOFRE NUCLEAR GENERATING STATION, UNITS 2 AND 3, COMMITMENTS TO ADDRESS STEAM GENERATOR TUBE DEGRADATION

San Onofre Nuclear Generating Station, Units 2 and 3 – Relief Request ISI-3-31

San Onofre Nuclear Generating Station, Units 2 and 3 – RAI Regarding Application for Preemption Authority

SAN ONOFRE NUCLEAR GENERATING STATION – NRC INTEGRATED INSPECTION REPORT 050003612011005 and 050003622011005

Useful news and research on the energy and electricity industries.

ML12122A012 – Proposed Implementation Schedule for License Amendment Request 11-06,Revision to Technical Specification 3.3.5, Loss of Power (LOP) Diesel DG Start Instrumentation

ML12121A513 – Mitsubishi Heavy Industries (MHI) Has Identified Steam Generator Tube Leak During First Cycle After Steam Generator Replacement.

Ml12121a509 – Part 21 Interim Report – Steam Generator Tube Wear

ML12121A173 – Emergency Core Cooling System (ECCS) Performance Evaluation Models, 10 CFR II Annual ReportFor Calendar Year 2011

Ml12118a141 – San Onofre Nuclear Generating Station, Units 2 and 3 -Site-specific Implementation of b.5.b Phase 2 and 3 Mitigating Strategies Temporary Instruction Inspection (Nrc Inspection Report 05000361-2008007 and 05000362-0008007)

ML121170395 – San Onofre 3 – EDG Failed to Start During a Slow Start Sequence for Monthly Surveillance

ML121170394 – Special Inspection at San Onofre Due to Inadequate Electrical Connections

Ml12109a094 – Part 21 Interim Report – Steam Generator Tube Wear

Ml120890550 – Nrc Issues Confirmatory Action Letter for San On of Re Nuclear Generating Station Restart Preparations

ML12086A182 – Steam Generator Return to Service Action Plan – 2012

Ml120800460 – Nrc to Send Augmented Inspection Team Tosan Onofre Nuclear Generating Station

Ml12075a258 – Augmented Inspection Team Charter to Evaluate The

Ml12075a219 – Update – Augmented Inspection Team Onsite at San Onofre Unit 3

Ml12032a243 – San Onofre Unit 3 Steam Generator Tube Leak and Rapid Shutdown

ML11241A211 – Emergency Diesel Generator Engine Monitoring Program (EDGEMP)

ML11241A138 – Response to NRC Concerns of Inverter Inoperability

ML11241A137 – San Onofre 2 – 3 EDG Ventilation Fan Nose Cone Corrosion Results in Fan Damage.

ML11241A136 – San Onofre 2 – 3 EDG Ventilation Fan Nose Cone Corrosion Results in Fan Damage

ML11241A135 – SONGS Relay Settings for Degraded Grid Voltage Protection

ML11241A134 – San Onofre Nuclear Generating Station Units 3 and 2 — UPDATE — Emergency Diesel Generator Shunt Ring Cracking Issue

Ml053130316 – San Onofre Nuclear Generating Station Unit 2  Operating License

Ml020700284 – San Onofre Nuclear Generating Station Unit 3

XR259219- San Onofre Nuclear Generating Station (SONGS)Units 1, 2, 3, And Independent Spent Fuel Storage Installation

030212 – San Onofre Nuclear Generating Station Provides Status Update

01312012 San Onofre Nuclear Generating Station Operators Perform Precautionary Shutdown of Reactor Unit

EditSan Onofre Nuclear Generating Station – Tetra Tech Alternative Cooling System Analysis

San Onofre Nuclear Generating Station Design and Emergency Response Capability

The Future of the San Onofre Nuclear Generating Station

Edison Terms and Conditions Supplemental Terms Exhibits An Onofre Nuclear Generating Station (SONGS)

SONGS Confirmatory Action Letter Fact Sheet – Southern California Edison

San Onofre Nuclear Generating Station (SONGS) Overview – Generation Business Unit – Edison International

Cooling Water Intake Structure Technology Fact Sheets

Changes at and AroundSan Onofre Nuclear Generating Station Songs Has New Plant Supervisor, Is Getting Newsteam Generators and Has a New Reef Offshore

Aging Nuclear Power Plants – Managing Plant Life and Decommissioning September 1993

Aging Nuclear Power Plants – Managing Plant Life and Decommissioning

CONVERTING CALIFORNIA’S TWO NUCLEAR PLANTS FROM OTC TO COOLING TOWERS

MHI Delivers Generators to San Onofre Release_Feb 24 09

Ever Ready 2009 – Protective Action Zones

San Onofre Nuclear Generating Station – Nrc Radiation Safety Team Inspection Report 03-11-2004

CVAP Software for Check Valve Performance Prediction Conditon Monitoring Maintenance Optimization & Root Cause Failure Evaluation 2

Deployment of a FullScope Commercial Nuclear Power Plant Control Room Simulator At the Idaho National Laboratory

Knowledge Transfer and Peer Mentoring at SONGS a Case Study

PLM and Steam Generator Replacement at SONGS

san-onofre-inspection-june-2011 – SAN ONOFRE NUCLEAR GENERATING STATION – NRC FOCUSEDPROBLEM IDENTIFICATION AND RESOLUTION INSPECTIONREPORT

A Road to Successful Integrated DCS Upgrades

CWA §316(b) Compliance – Power Plant Cooling Water System AnalysisFeasibility Evaluations, Conceptual Designs, Site Modifications

Anatomy of a Nuclear Plant Planned Outage

San Diego Gas & Electric Company Notice of Application to Increase Electric Rates Application No. 06-04-018

San Onfre Nuclear Generating Station – NRC SG Letter

ML062280597 -Data Collection Questionnaire Docket Nos. 50-206, 50-361, And 50-362San Onofre Nuclear Generating Station, Units 1, 2 and 3

1987 – m e c Biological Project San Onofre Nuclear Generating Station Monitoring Studies on Ichthyoplankton and Zoo Plankton

01312012 San Onofre Nuclear Generating Station Operators Perform Precautionary Shutdown of Reactor Unit

03142012 – San Onofre Nuclear Generating Station Provides Unit 3 Testing Update

Changes at and AroundSan Onofre Nuclear Generating Station – SONGS Has New Plant Supervisor, Is getting New Steam Generators and Has a New Reef Offshore

ML061530317 – 60-Day Post Cycle 14 Refueling Outage Reactor Pressure Vessel Head Inspection Report for San Onofre Nuclear Generating Station, Unit 2 05-26-2006

The San Onofre Nuclear Generating Station Emergency Planning Zone

Edison Terms and Conditions Supplemental Terms Exhibits An Onofre Nuclear Generating Station (SONGS)

Enformable © 2014 All Rights Reserved