Re: sky shine?

[Ted de Castro <tdc@xrayted.com>]

Actually - skyshine happens considerably lower than "normal" cloud cover
- ie excluding fog.

"Moscato, Patrick M Mr USACHPPM"@romulus.ehs.uiuc.edu wrote:
> 
> 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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