Re: Maximum quantity(grams)per year of uranyl acetate to exempt from radioactive license

[Michael Kay <mikekay@teleport.com>]

sergio fierman wrote:
> 
> Dear radsafers
> 
> I would like to receive suggestions on how to deal with our electronic
> 
> microscope laboratory workers:
> 
> 1- The electronic microscope is exempt of radioactive control in Israel.
> 
> 2- The uranyl acetate that is used with the microscope is considered
> 
>    radioactive( 0.17 microcurie per gram).
> 
> 3- The maximum amount used per year in our laboratory is 12 g.
> 
> Is it necessary to ask for a license to use this material?
> 
> What is the ALI for uranyl acetate?
> 
> Are there any long radiation effects for such annual quantity?
> 
> What arguments can I use to convince the lab. workers that there is no
> danger at all whit such quantities?
> 
> Thanking you in advance
> 
> Sergio
> 
> 
> 
>  =============================================================================
>  Sergio Faermann Ph.D.                      Tel: 972 - 7 -6 400682/6403301
>  Chief Medical Physicist                    Fax: 972 - 7 -6 232336
>  Institute of Oncology                      E-mail: sergio@bgumail.bgu.ac.il
>  Soroka Medical Center
>  P.O.B 151 Beer-Sheva 84101
>  ISRAEL
>  =============================================================================
Be sure to note the age and history of the material you are using. Since
so little is usually used, old bottles are often around containing
Uranyl Acetate made with natural uranium instead of made with depleted
uranium. The activity is different.

Michael Kay, ScD, CHMM
mikekay@teleport.com