RE: 137Cs check sources

["Dampf, Michael" <DAMPFM@coned.com>]

Ditto.- Also there are many devices that can be used for source checking
that are readily available- even trraceable to NIST if necessary.

Mike

> -----Original Message-----
> From:	Bult, James [SMTP:james.bult@msfc.nasa.gov]
> Sent:	Thursday, September 17, 1998 1:11 PM
> To:	Multiple recipients of list
> Subject:	RE: 137Cs check sources
> 
> Mount a check source in a shielded holder on a wall or benchtop.
> Having it
> mounted on a meter is not a god idea for several reasons - ALARA,
> potential
> leakage and subsequent area contamination, etc.  Since you already
> have a
> number of complaints, do it soon to keep aggravation minimized.
> 
> Jim Bult, RRPT
> NASA Marshall Space Flight Center RSO
> > ----------
> > From: 	mdater@nexstar.com[SMTP:mdater@nexstar.com]
> > Reply To: 	radsafe@romulus.ehs.uiuc.edu
> > Sent: 	Thursday, September 17, 1998 11:46 AM
> > To: 	Multiple recipients of list
> > Subject: 	137Cs check sources
> > 
> > I have been installing the 1 uCi 137Cs check sources to our survey
> meters.
> > I have had an  uproar over the fact that these sources are emmiting
> an
> > surveyable reading even 12 inches away from the checksource
> > I measured 65000cpm (using a ludlum 44-2 detector) on surface of one
> of
> > these checksources.
> > My questions:
> > Does anyone have data on the exposure rate of these sources to an
> > individual that is in proximity of the source for 8 hr?
> > Is there a better way to check meters for functionality, rather than
> have
> > a
> > check source attached?
> > How have others tackled this protest (that the check source is
> irradiating
> > the individuals, hands, arms, benchpartner, etc.)
> > When was this regulation(and can you reference this regulation to
> me) put
> > in place that an individual has to be exposed to radiation for the
> reason
> > that a survey  meter can be checked against radiation?
> > Mark Dater
> > NeXstar Pharmaceuticals, Inc.
> > 2860 Wilderness Place
> > Boulder, CO. 80301
> > Work phone: (303) 546-7703
> > Fax: (303) 444-0672
> > E-mail mdater@Nexstar.com
> > These are my comments and questions and not those of my employer.
> > 
> > 
> > 
> >
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> information can be accessed at
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