line source calc.

["Patrick J. McDermott" <mcdermot@REHS.rutgers.edu>]

Radsafers,

Looking for some confirmation. 

We have a 22 inch (55.88cm) line source of Co-60.  13 Curies.  
Using the RHH (1992) pgs 53,58 and 59, I calculate that the Dose 
equivalent rate 1ft (30.48cm) from the CENTER of the source is 
approx. 90 rem/hour.  

I am neglecting the beta dose and accounting for two gammas per 
disintegration  1.17 and 1.33 Mev.  I am aware that both are not 
100% abundant... these numbers are close enough for our purposes.  

Unless the rest may be interested, e-mail me : 
mcdermot@rehs.rutgers.edu  
Thank you in advance for your assistance.
Patrick

Patrick J. McDermott
Rutgers Envir. Health & Safety
Rutgers, The State University
24 Street 1603
Bldg 4127 Livingston Campus
Piscataway, NJ 08854-8036
(p) 732-445-2550 (f) 732-445-3109
e-mail: mcdermot@rehs.rutgers.edu