RE: DCGL Values and ALARA

[sbrightwell@shepmill.com (Shane Brightwell)]

Johannes,

1)  Tables of DCGL values corresponding to 15 mrem/y TEDE were initially
published in NUREG-1500 (DRAFT 8/94).

2)  In 2/98, an early draft of NUREG-1549 was released with DCGL tables
that corresponded to 25 mrem/y TEDE, and were reportedly more accurate than
the NUREG-1500 tables with respect to dose conversion.

3)  The latest draft of NUREG-1549 (7/98) does not contain any DCGL tables
whatsoever.  Caveat: This was more likely by desigh rather than by accident.  

I have all three of the NUREGs listed above if you want copies. 

We've recently completed a decommissioning project where we actually
implemented the RG 1.86 limits using a MARSSIM approach.  The subjects of
evaluating DCGLs/TEDE and performining an ALARA analysis based on having
met the RG 1.86 criteria are quite extensive.  I'd like to discuss the
issues you presented on RADSAFE; however, my experience dictates that the
discussion is too broad for an e-mail response.

Please contact me if you are interested in discussing your issues in
greater detail.

Reg's,

Shane Brightwell
Senior Staff Engineer
Health Physicist
Shepherd Miller, Inc.
3801 Automation Way
Suite 100
Fort Collins, CO 80525
Ph: (970)223-9600 (main)
    (970)206-4315 (office)
FAX:(970)223-7171
mailto:sbrightwell@shepmill.com
http://www.shepmill.com


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