RE: High Contamination

["Mitchell, Michael T." <mtmitchell@tva.gov>]

Several people have asked about the isotopic constituents of our
contamination so I am listing the results from a smear taken at the
point of highest contamination.  Again, the challenge I have is to put
together a decon technique which will lower the levels of contamination
in the drywell in order to facilitate required work during the Oct.
outage without spreading it throughout and making a bad situation worse.

Thanks to all who have already replied.

Activities are in uCi/cm2
Cr-51	2E-4		Ag-110m  7E-5
Mn-54	3E-5		I-131        3E-4
Co-58	3E-5		I-133        1E-5
Co-60	5E-5		Cs-134	    4E-4
Zn-65	1E-4		Cs-136	    3E-5
Sr-92	3E-5		Cs-137	    3E-4
Tc-99m	8E-6 

Mike Mitchell

=======================================================
Michael. T. Mitchell
Health Physicist

Tennessee Valley Authority
Browns Ferry Nuclear Plant
Phone: (205) 729-2401
Fax: (205) 729-3157
mailto:mtmitchell@tva.gov