Concrete Demolition

[kg1@cosmail1.ctd.ornl.gov (Kurt Geber)]

Does anybody in radsafe have experience controlling airborne contamination
generated by an electric jack hammer?  We're planning to use a "Bosch
electric breaker hammer" to decontaminate about 15 sq. ft. of Cs-137 and
Sr-90 contaminated concrete inside a building.  Based on core sample results
we're going to remove the top  1" from a 12" thick slab.  Of course we'll be
using respitory protection, but we don't want spread contamination to the
adjacent lesser contaminated areas so we want some engineered control for
the dust. I really don't have time to experiment on clean concrete with
various size HEPA vacs.  Any practical advice is appreciated.  Thanks in
advance.


**********************************************
	Kurt R. Geber
	Lockheed Martin Energy Research Corp.
	Oak Ridge National Laboratory
	P.O. Box 2008
	Oak Ridge, TN  37831-6160

	Internet:	kg1@ornl.gov
	Phone:		423-574-0929
	Fax:		423-241-2779