[ RadSafe ] NBC News story on airport scanner

[Perle, Sandy]

Thanks Barbara,

I agree the reference used in the story would be have been more appropriate if they simply referred to the 1.0 mSv (100 rem) Public Dose Limit, or stated that a "declared pregnant female" is allowed to be exposed to 5.0 mSv during the gestation period and even that the annual DDE is 50 mSv. Would have out the 0.005 rem into better context.

Regards,

Sandy
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On Mar 17, 2010, at 11:37 PM, <blreider at aol.com<mailto:blreider at aol.com>> <blreider at aol.com<mailto:blreider at aol.com>> wrote:


Sandy, there is a 25 mrem cleanup limit as follows:  "NRC’s Radiological Criteria for License Termination (See 62 FR 39058, July 21, 1997). The NRC rule set an allowable cleanup level of 25 millirem per year (equivalent to approximately 5 x 10-4 increased lifetime risk) as the primary standard with exemptions allowing dose limits of up to 100 millirem per year (equivalent to approximately 2 x 10-3 increased lifetime risk). "

Not the limit I would have used in comparison but it is a limit nevertheless.

Barbara Reider, CHP



-----Original Message-----
From: Perle, Sandy <SPerle at mirion.com<mailto:SPerle at mirion.com>>
To: radsafe at health.phys.iit.edu<mailto:radsafe at health.phys.iit.edu> <radsafe at health.phys.iit.edu<mailto:radsafe at health.phys.iit.edu>>
Sent: Wed, Mar 17, 2010 9:44 pm
Subject: [ RadSafe ] NBC News story on airport scanner


Good coverage tonight, except for the following statement:

Estimated 0.005 mrem per scan and then, the government recommends 25 mrem from a
single source per year is 25 mrem! What is this 25 mrem value? What are they
talking about?

Otherwise, a good story.

Sandy Perle
Sent from my Windows phone from AT&T
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