[Sneap] Radiation Shielding on Wheels?

[Gerhard Randers-Pehrson]

Years ago at what is now the Jefferson Lab in Newport News, VA, we had a big
L-shaped shield behind the Van de Graaff. It was made of maybe 15 tons of
blocks sort of like these:
http://www.biodex.com/radio/shielding/shielding_100opt.htm
It moved on a three tracks that were set in cement and topped with long,
narrow, ground steel plates that were very carefully leveled. The "wheels"
were re-circulating roller bearings. There was on electric drive on one
wheel set. (Or was it against a chain? I don't remember.)
Gerhard

-----Original Message-----
From: sneap-bounces at tunl.duke.edu [mailto:sneap-bounces at tunl.duke.edu] On
Behalf Of Tipping, Tracy N
Sent: Monday, November 19, 2007 9:07 AM
To: sneap at tunl.duke.edu
Subject: [Sneap] Radiation Shielding on Wheels?

Howdy,

We have an application where it would be really convenient to have local
radiation shielding around a target chamber that is moveable so that the
shielding could be moved to the side for access to the chamber.  The
shielding will consist primarily of a couple of tons of lead.  Any
innovative ways of putting such a shield on wheels?  Maybe multiple
pieces can be positioned and interlocked together?  Any thoughts would
be appreciated.

Thanks,

Tracy

Tracy N. Tipping
Deputy Radiation Safety Officer
The University of Texas at Austin
Environmental Health & Safety
P.O. Box 7729
Austin, TX 78713-7729
512-471-1496
FAX:  512-475-6383
ttipping at austin.utexas.edu 
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