[ RadSafe ] Stack Emission Limits

Muckerheide, Jim (CDA) Jim.Muckerheide at state.ma.us
Wed Feb 7 13:23:15 CST 2007


Nor liters :-)  Make it milliquarts? :-)

Regards, Jim Muckerheide
 

>-----Original Message-----
>From: radsafe-bounces at radlab.nl 
>[mailto:radsafe-bounces at radlab.nl] On Behalf Of John R Johnson
>Sent: Wednesday, February 07, 2007 2:16 PM
>To: Otto Raabe; Franz Schonhofer; RADCHEM-LIST (RADCHEM-LIST); RADSAFE
>Subject: RE: [ RadSafe ] Stack Emission Limits
>Importance: High
>
>Otto
>
>I didn't know that non SI units were "American units"-:)
>
>John
> _________________
>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 Otto Raabe
>Sent: February 7, 2007 10:51 AM
>To: Franz Schonhofer; RADCHEM-LIST (RADCHEM-LIST); RADSAFE
>Subject: [ RadSafe ] Stack Emission Limits
>
>
>February 7, 2007
>
>10 CFR Part 20 sets annual average limitation for stack 
>emissions in the
>United States.  For example, for carbon-11 monoxide, the annual average
>concentration is given as 2E-6 microcuries per milliliter of 
>air. [Sorry
>about the American units.] .
>
>My question concerns a brief ultra-high concentration emission that may
>occur only occasionally and last only a few seconds. Is there 
>a peak limit
>for such an emission? I can always run my exhaust fans for a 
>year to get
>the average down to the allowed annual average, but even if the exhaust
>fans were turned off after an emission event there is no real 
>difference in
>potential exposure risk.  But it seems that I can meet the 
>release limit by
>simply running my fans while there are no emissions.
>
>Comments please.
>
>Otto
>
>**********************************************
>Prof. Otto G. Raabe, Ph.D., CHP
>Center for Health & the Environment
>University of California
>One Shields Avenue
>Davis, CA 95616
>E-Mail: ograabe at ucdavis.edu
>Phone: (530) 752-7754   FAX: (530) 758-6140
>***********************************************
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