FW: Looking for a very high count rate alpha meter

["Richards, David" <david.richards@rfets.gov>]

I think I need to correct my previous post about the alpha RO-2. My memory
now seems to be that the RO-2 had a range up to 4 million DPM not CPM. I
think the meter went to 2 million CPM and their conversion factor was 2 and
I believe the PAC-4s went to 500,000 CPM with a CF of 4.

Memory's getting bad. I guess I need to stay out of these technical issues.

Regards

DJ Richards
Rocky Flats Environmental Technology Site
David.Richards@rfets.com
djrichards@earthlink.net




> -----Original Message-----
> From:	Richards, David 
> Sent:	Wednesday, March 24, 1999 7:34 AM
> To:	'radsafe%romulus.ehs.uiuc.edu@inet.rfets.gov'
> Subject:	RE: Looking for a very high count rate alpha meter
> 
> 
> 
> 
> That's correct. It is an actual RO-2 and it is yellow. I'm not sure if it
> was a special build for them or if it is a normal production piece. We
> used them when I was at the burial ground a couple years back. They had
> PAC-4s that, if I remember correctly, went to 2 million CPM and the RO-2s
> for high range that went to 4 million CPM. An interesting trivia note is
> their unique terminology for anything high enough to peg the RO-2. If the
> RO-2 went offscale, the reading was recorded as "UTM" which stands for
> "Un-told Millions".
> 
> Anyway, the guy that used to be in charge of their instrument lab was Bill
> Wilke. The last number I had for him is 803-725-3720 but that's pretty
> old. It's worth a shot, though.
> 
> Regards
> 
> DJ Richards
> Rocky Flats Envoronmental Technology Site
> David.Richards@rfets.com
> djrichards@earthlink.net
> 
> -----Original Message-----
> From:	Sam Engelhard [SMTP:mrnrge%lamar.colostate.edu@inet.rfets.gov]
> Sent:	Tuesday, March 23, 1999 3:14 PM
> To:	Multiple recipients of list
> Subject:	Re: Looking for a very high count rate alpha meter
> 
> At Savannah river site they use an ion chamber instrument that was for
> Alpha
> contamination in the range you mention. They called the instrument a
> "Yellow
> RO-2". I'm sure the instrument facility  @ SRS can give you the units
> technical name.
> V/R
> Samuel A Engelhard (Sam) RRPT
> Colorado State University Radiation Control Office
> 131 General Services Bldg.
> Ft. Collins Co 80523-6021
> (970)491-4835
> MrNrge@lamar.colostate.edu
> 
> 
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