ML071240185

Reactor Decommissioning Program Lessons-Learned

ML071240185
Person / Time
Site:	Haddam Neck, San Onofre, Yankee Rowe, Maine Yankee, Big Rock Point, Rancho Seco, Trojan
Issue date:	12/31/2005
From:	Andersen R, Bushart S Electric Power Research Institute, Nuclear Energy Institute
To:	NRC/FSME
References
Download: ML071240185 (14)

Text

Reactor Decommissioning Program Lessons-Learned

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• Ralph Andersen, CHP (NEI)

Sean Bushart, Ph.D (EPRI)

C 2005 Electric Power Research Institute, Inc. All rights reserved. 1

1. rt Industry Program

• EPRI

- Document experience and lessons-learned

- Technology development & transfer.

- On-site assessment and technical support oNEI

- Executive oversight & policy development

- Interface with NRC, EPA and Congress

- Resolve generic economic & regulatory issues 0 2005 Electric Power Research Institute, Inc. All rights reserved. 2

Currently for Power Plants in USA

" Decommissioning of closed units proceeding well

- 2 plants have terminated their licenses

- significant progress at other plants

- transfer of fuel to dry storage completed

- funding appears to be adequate in most cases

- completion of several plant projects in next 1-2 years

" Remaining issues

- Final site characterization

- License termination and site release

- Materials clearance

- Groundwater contamination/ soil remediation 0 2005 Electric Power Research Institute, Inc. All rights reserved.

7 0 7 US Plants in Progress, - fuel in dry storage Maine Yankee 900MW PWR, complete Yankee Rowe 180MW PWR 90% complete San Onofre 1 450MW PWR O

• 0 Big Rock Point Key EPRI Interactions:

• 2 Technical Workshops

-Hazardous Waste Remediation

-LTP and Final Site Release

,Full System Decon with EPRI DFD process

0 Maine Yankee

.7 Kev EPRI Interactions:

• Technical Workshops

-Radiation Exposure Control

-Final Status Survey

.*Full System Decon with EPRI DFD process

• Experience Summary Report

0 Trojan Kev EPRI Interactions:

• Technical Workshop

-Embedded Piping Removal

• Evaluation of Decommissioning Strategy N,

• SFP Cleanup and Cooling Report

a. 0 Yankee Rowe Key EPRi Interactions:

,*Technical Workshop

-Concrete Removal

• Groundwater Experience Report

Connecticut Yankee Key EPRI Interactions:

eTechnical Workshops

-Final Site Survey and LTP

-Groundwater Management

• Experience Summary Report

0 Rancho Seco Key EPRI Interactions:

• Technical Workshop

-LLW Management Post-Phase I Site Boundary

• ALARA Evaluation for Reactor

.Internals Segmentation oExperience Summary Report

• Decommissioning strategy peer review team

Technology Transfer Focus of EPRI Program Continues Internationally

• Growing membership internationally in the EPRI Program

- UKAEA- Scotland, British Energy, BNG- UK

- EdF- France, SOGIN- Italy, JAPC- Japan, TaiPower-Taiwan

- UNESA (All Spanish Utilities), ENRESA, & Iberinco- Spain

• US technical and regulatory experiences are invaluable to ALL members New technologies/experiences being transferred to U.S. as well 0 2005 Electric Power Research Institute, Inc. All rights reserved. 11

EPRI Collaboration Reducing the Costs and Risks of Decommissioning Nuclear Facilities Examples: EPRI Reports/Software Available to Members Planning= Pre-planning Manual R tory.Issu License Termination Plan Site Characterization**

Site Release Modeling and Characterization Initial Activities Optimization of Radioactive Waste Management*

Reactor Primary System Decontamination**

Removal of Graphite Cores**

Major'Remnoval Reactor Vessel Internals Segmentation Removal of Major Components and Structures Site Survey and Final Release**

Major Site Release Site Groundwater Characterization Studies**

Demolition of Major Structures Disposal of site materials (concrete, soil)

Final Site Survey**

ýClosure Tasks License Termination 02005 Electric Power Research Institute, Inc. All rights reserved. ** Technical Topics Available for Site-specific Evaluations 12

Lessons-Learned - Decommissioning o Paradigm shifts (operation-shutdown-deconstruction-disposal)

• Internal.and external stakeholders o Applicable agencies and standards o Historical site review

• Site characterization

" Groundwater modeling and monitoring

" Decontamination for decommissioning

" Reactor vessel/large component disposal

" Soil and groundwater remediation

" Low-level waste management options

" Final site survey 0 2005 Electric Power Research Institute, Inc. All rights reserved. 13

Lessons Learned - New Plants (Examples)

" AE/Construction considerations

- Design and construction documentation

- On-site construction practices

- Hydro-geological characteriaztion

" NSSS Design Considerations

- Sumps

- Structures and outside areas

- Spentf.uel pool and transfer canal

- Piping.a

- Tanks

- Site water management

- Discharge lines

© 2005 Electric Power Research Institute, Inc. All rights reserved. 14 qý