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Re: maximum permissible limits
Franz
I will attempt to give you what I think is the Canadian position.
The CNSC does not have MPC or intake limits. Total effective doses to
workers (as calculated from in vivo or in vitro monitoring use ICRP or other
approvel models) are compared to the limits in the regulations (these are
based on ICRP Publication 60).
The CNSC's working group on internal dosimetry is reviewing a proposal to
use personal air samplers instead of bioassay when bioassay is not sensitive
enough to meet the current regulatory requirements (example; natural
uranium).
I doubt if the above is of any relavance to Austria, but I hope it is of
some use.
Regards
John
________________
John R Johnson
4535 West 9th Ave.
Vancouver, B. C.
V6R 2E2
(604) 222-9840
idias@interchange.ubc.ca
----- Original Message -----
From: "Franz Schoenhofer" <franz.schoenhofer@CHELLO.AT>
To: "radsafe@list. vanderbilt. edu (E-mail)" <radsafe@list.vanderbilt.edu>
Sent: Thursday, July 25, 2002 10:58 PM
Subject: Fw: maximum permissible limits
I have only received two comments on my question, which did not answer it. I
do believe that this question must be of really fundamental interest to
anybody, who is checking data for compliance with legal prescription.
Please, if you do not want to answer to the list, answer to me personally.
So I post my question once again.
Franz
----------------------------------------------------------------------------
-----------------------------------
>This comment raises for me a very important question: What is the
criterion,
>whether a maximum permíssible concentration has been exceeded? There are
two
>extremes possible: Is it, that the measured value plus x sigma has to be
>below the MPC or is it that the measured value has to be below the MPC plus
>x sigma? The latter criterion is used in most regulations in Austria
>regarding contaminants in food (x=2). The criterion defined by the Austrian
>Standardisation Organisation (which has to be regarded as a recommendation
>and has no real legislative power) is coherent with the first extreme. I
>wonder, what the legislation is in other countries.
>
>Best regards,
>
>Franz
>#
>
>
>
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