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RE: sky shine?
Mark,
You might want to read the NCRP Report No. 51 entitled Radiation
Protection Design Guidelines for 0.1 - 100 MeV particle accelerator
facilities (Pages 68-71, Second Printing edition, January 31, 1993) for some
guidance and background. I am assuming the dose rate you listed is 200
mR/hr and 80 mR/hr, respectively and not 200 MR/hr and 80 MR/hr? Using M
and not m has a magnitude of 9 difference. I would believe that someone has
data that would address the reflected x-rays due to skyshine, however there
are probably a lot of parameters to be considered, i.e.. distance to cloud
cover, thickness of cloud cover, and so on. A rule of thumb I don't have
but someone might. Direct measurements for the difference scenarios, if you
are performing actual and not theoretical calculations, would provide the
best answer you are seeking. Hope this helps in some way. Have a great
day.
Mark Moscato
Health Physicist
US Army CHPPM
-----Original Message-----
From: mark sasser [mailto:duke99301@yahoo.com]
Sent: Thursday, November 02, 2000 2:25 PM
To: Multiple recipients of list
Subject: sky shine?
An area shielded. say a bldg. with an open roof,
say with a dose rate of 200 MR/HR.contact on the
object maybe 80 MR/HR GA.how would sky shine come
into play on clear days? or any day? this is for
boundry set points. Barriers. ect.
=====
mark sasser
at duke99301@yahoo.com
you can also reach me at duke9930@concentric.net
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