[ RadSafe ] Re: attn. Landauer Customers

Wright, Will (DHS-PSB) WWright2 at dhs.ca.gov
Wed Aug 24 17:03:42 CDT 2005


i believe i deleted the initial strings, could someone briefly describe the issue or was this simply a discussion about the inconvenience of maintaining a control. controls are critical as indicated in all objective science endeavors/ bench top science as well as others will teach this the hard way.

-----Original Message-----
From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl]On
Behalf Of Flood, John
Sent: Wednesday, August 24, 2005 2:52 PM
To: 'sandyfl at earthlink.net'; jblute at NITON.com; radsafe at radlab.nl; Neill
Stanford
Subject: RE: [ RadSafe ] Re: attn. Landauer Customers


Perhaps I missed a post on this subject, but the discussion seems to be
overlooking the in-transit exposure that a control dosimeter also monitors.
There is no doubt that accurate background subtraction is important to low
dose measurements, but the absence of background measurements can be a
horrifying experience if every dosimeter in the shipment to the processor
shows a few hundred mrem from irradiation in-transit.  This is a very real,
modern problem - if your dosimeters sit next to some clinic's radionuclide
shipment on the truck or in the warehouse, expect to see 50-300 mrem on
every dosimeter (how would I know this?).  Without control dosimeters, life
certainly gets more complicated.

Bob Flood
Nevada Test Site


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