[ RadSafe ] TLD Readings in Checked Luggage

[Sandy Perle]

Hello Ranier,

You are correct with respect to carry-on luggage, the dose from the X-Ray
scan is generally going to be significantly less than the typical dose from
transit exposure. Carry-on X-Ray exposure for most situations does not even
expose unirradiated film products, be they from a camera or even a film
dosimeter.

Checked luggage is a different story and there the exposures can be as much
as and higher (with multiple checks performed during the trip) from 1.5 to
2.5 mSv per exposure. Three checks along the way (excluding background) can
result in 4.5 to 7.5 mSv. Fortunately this does not affect most electronic
articles, but will provide a significant exposure to a dosimeter left in the
luggage.

Regards,

Sandy

----------------------------------------------------------------
Sander C. Perle 
President
Global Dosimetry Solutions, Inc. 
2652 McGaw Avenue
Irvine, CA 92614
 
Tel: (949) 296-2306 / (888) 437-1714 Extension 2306 
Fax:(949) 296-1144
 
E-Mail: sperle at dosimetry.com
E-Mail: sandyfl at cox.net 
 
Global Dosimetry Website: http://www.dosimetry.com/ 
 

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On Behalf
Of Rainer.Facius at dlr.de
Sent: Thursday, September 06, 2007 5:03 AM
To: LMS1 at pge.com; radsafe at radlab.nl
Subject: AW: [ RadSafe ] TLD Readings in Checked Luggage

Linda:

Unless you remove your TLD chips after passing the (hand-) luggage check and
read them out before take-off of your plane, the dose received during the
flight (several micro-Sv) may well dwarf the dose from the check (approx. 1
- 2 micro-Sv).

Best regards, Rainer

Dr. Rainer Facius
German Aerospace Center
Institute of Aerospace Medicine
Linder Hoehe
51147 Koeln
GERMANY
Voice: +49 2203 601 3147 or 3150
FAX:   +49 2203 61970

-----Ursprüngliche Nachricht-----
Von: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] Im Auftrag
von Sewell, Linda
Gesendet: Mittwoch, 5. September 2007 23:22
An: radsafe at radlab.nl
Betreff: [ RadSafe ] TLD Readings in Checked Luggage


Hi All,

Has anyone had any experience with the TLD doses to expect if a TLD is
placed in checked luggage? If so, please give me a call or send me an e-mail
with the dose received and the estimated energies.

Thanks,

Linda

> Linda Sewell, CHP
Senior Health Physicist
> Diablo Canyon Power Plant
> MS 119/1/122
> PO Box 56
> Avila Beach, CA 93424
> 805.545.4315 (voice)
> 805.545.2618 (fax)
> mailto:lms1 at pge.com
> 
> 
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