[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: Laundered PPE Acceptance Criteria
Dennis,
We (Y-12) are a DOE facility. We use 10,000 beta-gamma and 10,000 alpha
when monitoring our anti-C clothing (cloth goods); 50,000 dpm beta-gamma
and 50,000 alpha when monitoring our rubber shoes. As you know, there isn't
much, if any, dose from alpha external to the body - beta-gamma should be
the deciding factor because of the potential dose consequences. We have a
couple of Technical Basis Documents; one justifying using 20,000 on cloth
goods (we stuck with 10,000) and the other justifying using 50,000 for our
rubber shoes - both are based on potential dose consequences. Why the
RADCON manual set the TRU (alpha) limit at 1000 is beyond me, the
contamination is fixed after laundering - it isn't an inhalation or
ingestion hazard. Don't know what kind of throughput you would have setting
a laundry monitor at 1000 alpha; it couldn't be good.
Randy Redmond
BWXT Y-12 L.L.C.
Y-12 National Security Complex
Radiological Control Organization
Email: rxq@Y12.doe.gov
Phone: 865-574-5640
Fax: 865-574-0117
> -----Original Message-----
> From: dennis.hadlock@srs.gov [SMTP:dennis.hadlock@srs.gov]
> Sent: Tuesday, January 09, 2001 11:31 AM
> To: Multiple recipients of list
> Subject: Laundered PPE Acceptance Criteria
>
> The DOE Radiological Control Standard (DOE-STD-1098-99) recommends that
> laundered protective clothing should be less than 10,000 dpm/100cm^2
> beta-gamma/Uranium and less than 1,000 dpm/100cm^2 transuranics and other
> alpha emitters in order to be re-used. I would like to know what criteria
>
> non-DOE nuclear facilities use for returned laundry. I searched the
> archives and came up with two existing standards; NHMRC Radiation Health
> Series 38 (Australia) titled "Recommended limits on radioactive
> contamination on surfaces in laboratories (1995)" and U. S. NRC Regulatory
>
> Guide 8.23 "Radiation Safety Surveys for Medical Institutions". Are there
>
> any other standards in existence? If your criteria is not based on a
> standard, what is the basis?
>
> Thanks for your time. Please respond to me directly unless you feel the
> information would be appreciated by the list.
>
> Dennis Hadlock, RRPT, CHMM, CHP
> Principal Health Physicist
> Westinghouse Savannah River Company
> Phone: 803.952.4207
> Fax: 803.952.4429
> dennis.hadlock@srs.gov
> ************************************************************************
> The RADSAFE Frequently Asked Questions list, archives and subscription
> information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html