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Reactor
Decommissioning
History
Zion Unit-1 and Unit-2
revised 2012-01-13
Overview
Zion
1 & 2 (ZNPS) are Westinghouse commercial PWR power reactors. There
are located in the highly populated are midway between Chicago, Illinois
and Milwaukee, Wisconsin on the beach of Lake Michigan. Unit 1 (DPR-39)
& Unit 2 (DPR-48) each had a generating capacity of 1085 MWe and design
capacity of 3250 MWt. Commercial operations were achieved for Unit-1 on
December 1973 and for Unit-2 on September 1974. Final reactor operation
for Unit-1 was February 21, 1997 and Unit-2 was September 19, 1996. Both
units are currently being dismantled.
As of January 2012, Unit-2 RPV head has been shipped to Clive for burial.
Segmenting of RV Internals is ready to begin. Unit-1 is planned for head
removal late 2012. The RPV are planned to be thermal cut 2013 - 2014.
The fuel and GTCC waste will be stored on-site. We estimate final site
survey in 2022.
Reactor
Decommissioning Specifics
Internals
Removal
Underwater segmentation using cold cutting methods (reciprocating saw,
rotary saw, milling).
Reactor
Vessel Removal
Segment the RV and head. Current plan (at this time) is to segment the
vessel dry using an Oxy-fuel type of thermal cut. Wire sawing was originally
planned.
Segmentation
and Packaging Plan (S&P Plan)
Plan unknown, but believed either Siempelkamp or Zion Solutions.
Key
People
Pat Daly, Dave Brown, Rob Woodard (ZS Proj Managers)
Ken Bentley, Ron Richards (RVI/RV Managers)
Mick
Papp, Michael Anderson (SNS Managers)
(because of the quantity of people, some job titles are generalized)
Contractors
TLG Services (for D&D cost estimating
in 1999).
Biggie Crane
Siempelkamp Nuclear Services, Inc. (SNS - formerly MOTA)
Comments
The Zion D&D is unique in a few ways. Energy Solutions formed Zion
Solutions and took over the decommissioning fund from the plant owner
(detailed information is readily available on the Internet). Also, this
will be the first side-by-side decommissioning of two power producing
nuclear units in the USA (and possibly the world).
Related
Publications and Documents
ZionSolutions 8-24-2011 Weekly
Reader Newsletter with RVI Segmentation overview.
ZionSolutions 9-29-2011 Weekly
Reader Newsletter with RVI Segmentation update.
ZionSolutions 11-28-2011 Weekly
Reader Newsletter on Cavity Fill Milestone.
References
The NRC's web page as of 8/24/06
& 2/22/10.
INSC web page as of 8/22/05.
Exelon Nuclear Operations Communications Department on 8/25/06.
Commonwealth Edison's PSDAR to the NRC dated February 14, 2000,
revision 0.
Conversations with site people Feb 2010 through Jan 2012.
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to return to the "scheduled" Reactor Decommissioning page.
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