[ RadSafe ] Operational quantities

John R Johnson idias at interchange.ubc.ca
Fri Sep 8 09:14:29 CDT 2006

Dear Mora Cañadas Juan Carlos

Some operational quantities for intakes are the annual limit on intake
(ALI), derived air concentration (DAC) and maximum permissible
intake/concentration (MPC/I).

Details for available publications that describe these can be found on the
ICRP http://www.icrp.org/ or NCRP http://www.ncrponline.org/ web sites.

John R Johnson, Ph.D.
President, IDIAS, Inc
4535 West 9-Th Ave
Vancouver B. C.
V6R 2E2
(604) 222-9840
idias at interchange.ubc.ca

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On
Behalf Of Mora Cañadas Juan Carlos
Sent: September 8, 2006 12:58 AM
To: radsafe at radlab.nl
Subject: [ RadSafe ] Operational quantities

Good morning.

I would like to ask a conceptual question to the group.

I have an undertanding problem on this "operational quantity" concept. I
have always use this concept for external doses (Hp(10), H*(0.07)...), but I
have read some references about operational quantities for intake of

Can anyone explain to me what those internal operational quantities are? Or
at least any document where I could read about it?

Thank you very much.
Juan Carlos Mora Cañadas
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