|
Reactor
Decommissioning
History
Shoreham
revised 19 October 2014
Overview
Shoreham was a commercial BWR power reactor. It had
a generating capacity of 820 MWe and 2436 MWt. It was operated briefly
in 1989. It ran for two (or less) full power days. Reactor decommissioning
took place in 1992. The reactor size was approximately 18-foot (5.5-meters)
diameter with a wall thickness of 6.7-inches (170mm). Material was carbon
steel with a stainless steel cladding on the inside.
Reactor Decommissioning
Specifics
 Internals
Removal
All work was performed underwater. Thermal cutting was primarily used.
Some long handle tools were also used for mechanical work such as unbolting
and manipulating. All work on the internals was done remotely. All work
on the internals was done by PCI Energy Services.
Reactor Vessel Removal
The reactor pressure vessel was cut dry by Wachs Technical Services. The
vessel was cut into ring sections by mechanical (turning). Hydraulic powered
drills were used to cut the required 6-inch (152mm) diameter lifting holes.
Once the 18-foot (5.5-meters) diameter rings were lifted out of the vessel
cavity they were placed into a secondary cutting area. They were size
reduced into 3 or 4 arc segments using track mounted thermal (oxy-fuel)
cutting.
Segmentation
and Packaging Plan (S&P Plan)
Pre-site (internals): PCI Energy
Services?
At
site (internals):
PCI Energy Services?
Pre-site
(reactor vessel): Wachs Technical Services?
At
site (reactor vessel): Wachs Technical Services?
Key People
Dan Hirsh was the on-site Project Manager for PCI Energy
Services.
Al Solano was the on-site Project
Manager for Wachs Technical Services.
Contractors
PCI Energy Services.
Wachs Technical Services (WTS).
Trentec (diamond wire cutting of the vessel bioshield)
Comments
Shoreham was a sister plant to Millstone-1.
Related Publications and Documents
No published technical papers have been found relating
to the decommissioning of this reactor or segmentation of the reactor
internals.
References
NRC's "Fact Sheet on Decommissioning
Nuclear Power Plants" (web page 8/15/05).
TLG Services' web page 8/14/05.
Nukeworker's web page as of 9/7/04.
Wachs Technical Services' web page as of 7/7/05.
Trentec's web page as of 8/15/05.
Click here
to return to the Reactor Decommissioning History main page.
|
