Re: Ring dosimeter problems

["Joseph Nick" <JLN@nrc.gov>]

The dosimeter that Jim is referring to was the Vinton dosimeter, manufactured in England.  I believe there was an association with a U.S. company too.  The dosimeter was a pretty thin Teflon ribbon with TL material at the fingertips inmedded in a plastic sleeve (similar to a glove finger).  The company also provided sizes for small to extra large fingers.  They were sometimes inconvenient under gloves because the workers would pull off the gloves and the finger "sleeve" would stay in the glove.  We used to lose some in the trash this way.  I don't know if they are still in business.

Joe Nick (JLN@nrc.gov)
USNRC, Region I
610-337-5056

>>> james.g.barnes@att.net 08/23 12:56 PM >>>
Several years ago I remember seeing a finger dosimeter 
that was embedded in a plastic finger sleeve that fit 
over the top of the finger.  They were very flexible and 
fairly strong.

I don't know if they were ever released commercially 
(anybody know???), but if so, they might be a good 
substitute for rings.

I have also seen bare Harshaw TLD chips mounted to 
surgical gloves (light shielded with plastic, then taped 
to the inside of a glove) used with some success, but 
this is a real hassle to set up and won't work as a 
routine programatic approach.


Jim Barnes, CHP
Radiation Safety Officer
Rocketdyne/Boeing
> Hi all,
> 
> We are having a problem with some of our ring dosimeters. Several of our
> Texans here have huge fingers, and they either can not wear or while
> wearing, frequently break our dosimeter vendor's largest ring dosimeters. 
> 
> My question is what are other facilities doing about this? Are there
> dosimetry providers with ex-large ring dosimeters? Any comments can be sent
> to me. Thanks!
> 
> 
> Bruce Busby, Senior Health Physicist
> International Isotopes, Inc.
> E-mail: bbusby@intiso.com 
> Office Phone: 940-323-9613
> 3100 Jim Christal Rd
> Denton, Tx 76207
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