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RE: Regulatory Use of EDE vs ED



NRC primary and derived limits are still based on Federal guidance report

#11, which is in turn based mostly on ICRP publication 30 (with a few minor

exceptions).



The NRC does not have a formal rulemaking yet about ICRP 68/72, but

licensees can always ask to use different primary and derived limits with

sufficient justification and basis. I am working on a submission asking for

new DAC ALI and ECL values, using ICRP 68 and 72 as the basis and

justification.  This information will be submitted to the regulators for

approval, then, hopefully, -VOILA- new modernized limits.



Charlie Migliore



 -----Original Message-----

From: 	owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu]  On Behalf Of Daniel Mackney

Sent:	Friday, July 05, 2002 7:56 AM

To:	alstonchris@netscape.net

Cc:	radsafe@list.vanderbilt.edu

Subject:	Re: Regulatory Use of EDE vs ED





Not all government agencies in the US apply ICRP26 or 60. OSHA is still back

in ICRP 2/10.

Rad Dan



On Wed, 03 Jul 2002 15:57:28 -0400 alstonchris@netscape.net wrote:



Folks



I was under the impression that governmental agencies, in the USA, were all

still on board with the EDE (cf. ICRP Publication 26).  Now comes a posting

to

the Medphys List, by someone at the FDA, which seems to imply that the FDA,

at

least, is already on to the ED (cf. ICRP 60).  As you know, the organ dose

weighting factors are not identical, in the two "schemes".  The ED weighting

factor for the skin did not even exist in ICRP 26.



So, can anyone elucidate who's doing what, with this, and why?  Seems to me

that they should be on the same page, n'est-ce pas?  Or am I yet too naive?



Cheers

cja





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