RE: Risk from a dental X-ray

["Earley, Jack" <jack.earley@rfets.gov>]

When we taught bio effects at a Pennsylvania power plant, we used Colorado
as an example, too. We asked the class what their expectations were
regarding CO's cancer rate relative to the 8-day statistical shortening of
life from average background levels, since CO's is twice as high from
natural sources. After all the speculation, we let them know that CO's
cancer rate was half that of the rest of the country's average. Between 8:00
when we started fundamentals, and noon when we finished bio. effects, there
was a huge difference in perception. Of course they were motivated by
employment, but at least the concern was replaced by knowledge.

Just my opinion, of course. . . .
Jack

	-----Original Message-----
	From:	Philip Hypes [SMTP:phypes%lanl.gov@inet.rfets.gov]
	Sent:	Tuesday, March 09, 1999 2:21 PM
	To:	Multiple recipients of list
	Subject:	Re: Risk from a dental X-ray

	I have often used this "x time at natural background"
	comparison.  This time, when I saw someone else
	use it, I asked myself if I shouldn't be specifying the
	location for that background level.  Obviously, the 
	background level at ground level in Denver is quite
	different from the level in Amsterdam.  I'll have to
	change my habits in this regard.

	I assume the right to nitpick comes under the
	freedom of speech verbiage in the Bill of Rights.
	Here's hoping New Zealand has similiar provisions.

	Phil

	At 02:12 PM 3/9/99 -0600, you wrote:
	"or about 2 days exposure to natural sources of radiation at ground
level."
	>
	>Andrew McEwan
	>________________________
	>Andrew C McEwan PhD
	>National Radiation Laboratory
	>PO Box 25-099
	>Christchurch, New Zealand
	>
	>Ph 64 3 366 5059
	>Fax 64 3 366 1156
	>Andrew_McEwan@nrl.moh.govt.nz

	___________________________________________________________
	Philip Hypes
	Los Alamos National Laboratory
	Safegaurds Science and Technology Group (NIS 5)
	(505) 667-1556  phypes@lanl.gov

	
************************************************************************
	The RADSAFE Frequently Asked Questions list, archives and
subscription
	information can be accessed at
http://www.ehs.uiuc.edu/~rad/radsafe.html
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html