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San Onofre, Unit 1Status & Lessons Learned

D&D Focus Area 2001Mid Year Review & Decommissioning

Symposium

Presented by: John Keelin, Engineering ManagerApril, 2001

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Unit 1 Statistics

• 450 Mwe Westinghouse PWR w/3 Primary Loops

• Commercial Operation 1968, Shutdown 1992• Coastal Location, between Los Angeles & San

Diego, CA• Shares physical site with SONGS 2 & 3 Units• Co-owned by SCE (80%) and SDG&E (20%)• SONGS 1 Fuel located in SFP, at SONGS 2 &

3 and at Morris, Ill• On Federal land/Lease requires removal of

structures

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Accomplishments

• Milestones– General License submittal for fuel storage canisters - 9/00– Cold & Dark - 10/00

• Areas Cleared– Lube Oil– Main/Aux transformer– East and West Heater Decks– Safe shutdown diesel– Intake– TPCW– New Fuel

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Accomplishments

• Buildings Removed– Diesel Generator– Small office building

• Other Equipment– RHR Heat exchanger– Other containment hot spots– Reactor cavity equipment– Turbine/Generator– RCP Motors

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Long Range Schedule• Control Building & East Heater Deck Demo - 9/01• Reactor Vessel Internals Segmentation - 12/01• Large Component Removal Complete - 7/03• Unit 1 Fuel in the ISFSI - 6/04• Intake System Removal - 11/05• Turbine Building Removal - 8/06• Fuel Building Removal - 8/06• Containment Removal - 3/07• Site Restoration - 1/08

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Challenges

• Physical– Limited real estate– Common protected area

• Personnel & vehicle entry• Boundary breech

– Shared plant systems– Accuracy of underground drawings

• Personnel– Competing for personnel with operating units– Operating vs. decommissioning mentality

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Challenges

• Programmatic– Establishing and managing the budget– Procedures designed for an operating unit

• Schedule• Other

– RVI segmentation– Storage of GTCC– RPV disposal site

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SONGS - ISFSI Plan

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Key Solutions/Lessons

• Develop a plan early to accommodate decommissioning and site needs

• Communicate, communicate, communicate• Create space by removing abandoned structures &

components• Relocate the Security boundary• Adjust and/or develop new processes to support work

requirements• Dedicated staff in critical areas

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Key Solutions/Lessons

• We have no idea what is underground• Plan around the operating unit’s schedule• Partnering is needed with developing industry

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Closing

• Develop and communicate the plan early and often

• Dedicated a portion of the staff minimizes competition for resources

• Demolition isn’t perfect, but there is no evidence to the contrary