RE: where to wear a dosimeter (Bernie's comments)

[glen.vickers@EXELONCORP.COM]

With respect to S/G's I believe many have seen enough data to badge the head

as the only WB location.  Extremity dosimeters are still used.  There can't

be but a couple of jobs in commercial nuclear power as challenging as steam

generator coverage.



Glen Vickers

Braidwood Nuclear Power Station



> -----Original Message-----

> From:	Stokes, James [SMTP:StokesJ@TTNUS.COM]

> Sent:	Friday, August 17, 2001 10:12 AM

> To:	'Sandy Perle '; 'radsafe@list.vanderbilt.edu '

> Subject:	RE: where to wear a dosimeter (Bernie's comments)

> 

>  In fact, I was a SG jumper in the 1980's. We had to wear five dosimters

> on

> our head, one on front chest, one on back, one on each thigh, and rings on

> all fingers.  This was because the radiaition levels varied so greatly

> inside the SG bowl, with levels as high as 17,000 mR/hr in many spots.

> The

> highest of the head,chest,back, and thighs, were recorded on a daily basis

> as the Whole body dose for the period.

> 

> jim Stokes RRPT

> 

> -----Original Message-----

> From: Sandy Perle

> To: radsafe@list.vanderbilt.edu

> Sent: 8/17/01 10:13 AM

> Subject: where to wear a dosimeter (Bernie's comments)

> 

> > Wearing a radiation badge outside the apron would have shut down

> > my research program. I see no reason for wearing a badge there; the

> > purpose is to protect the body, so we should measure the exposure to

> > the body.

> 

> I agree. And, the body is defined in the regulations as the highest 

> area where the whole body dose is, prior to the current revised 

> 10CFR20.101(a), and, the whole body was defined as "whole body, head 

> and trunk, active blood forming organs, lens of eye or gonads."  

> Therefore, if the highest dose was to the head, then the dosimeter is 

> required to be worn there. Doesn't anyone remember the root cause for 

> mulitbadging back in the early 80s?  San Onofre .. SG Jumpers NOT 

> wearing a TLD on the head, to measure the highest dose.

> 

> 

> 

> ------------------------------------------------------------------------

> Sandy Perle					Tel:(714) 545-0100 /

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> Director, Technical				Extension 2306

> 

> ICN Worldwide Dosimetry Service		Fax:(714) 668-3149

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