Re: Exempt Quantity for Co-57?

["J. J. Rozental" <joseroze@netvision.net.il>]

The IAEA BSS mention:

Co-57  Exempt Activity 10 E(6) Bq (27 uCi) or Exempt Activity Concentration
100 Bq/g

joseroze@netvision.net.il
Israel


----- Original Message -----
From: James Dwyer <JPD1@nrc.gov>
To: Multiple recipients of list <radsafe@romulus.ehs.uiuc.edu>
Sent: Thursday, July 27, 2000 7:52 PM
Subject: Re: Exempt Quantity for Co-57?


> Radsafers:
>
> 10 CFR Part 20, Appendix C, lists the quantities of licensed material
which require labeling and 10 CFR 30.71, Schedule B, lists exempt
quantities.  Most, but not all of the quantities listed in these two tables
are equal.
>
> Co-57 is regulated by the State, not NRC.  Despite this fact Appendix C
indicates that 100 microcuries of Co-57 requires labeling.  Schedule B does
not mention Co-57?
>
> Have the States established an exempt quantity for Co-57?  Is the value
100 microcuries as might be predicted?  Are all of the States in agreement
with this value?
>
> Jim Dwyer
> USNRC Region 1
> 610.337.5309
>
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