RE: Tritium Real Time Monitoring

["Lieskovsky, Miro" <MLieskovsky@nbpower.com>]

I will suggest you contact Dr. Mario Overhoff at Overhoff Technology
Corporation, Milford, Ohio, 1160US Route 50, 45150-9705, ph. 513 248 2400,
fax 513 248 2402,
e-mail: Overhoff@ix.netcom.com

They have a full line of tritium systems with various sensitivity levels and
possibilities for compensation (gamma and noble gas).  We use their Model
400SBgC with quadruple 200 cc (flowthrough) ion chambers. It features ~ 10
high level alarm settings, flow and battery alarms.  The scale can be
chosen. The sensitivity is listed at ~ 1 µSv/h (~ 1µCi.m-3), however, to
achieve this low level, it  needs a carefully controlled operation.
Generally, we tend to relay on this instrument at an order of magnitude
higher.  

We use these instruments with gamma or gamma+NG compensations for worker's
protection and  to 'sniff' waste for presence of HTO. 

It is a nice little instrument and this IS an endorsement.  

Our experience with the below mentioned Scintrex is that due to its gamma
compensation (no NG compensation) and  sensitivity, we tend to use it only
at committed dose rates from tritium at ~ 1mSv/h.

Please do not hesitate to contact me if you need further assistance.

Regards,

Miroslav Lieskovský, Eng.
Health Physicist
NB POWER - PLGS
P.O. BOX 600
Lepreau, N.B.
Canada, E5J 2S6
Tel. (506) 659 7421
Fax. (506) 659 6981
mailto:mlieskovsky@nbpower.com <mailto:mlieskovsky@nbpower.com> 
http://www.nbpower.com <http://www.nbpower.com/> 








-----Original Message-----
From: Jean-Francois, Stephane [ mailto:stephane_jeanfrancois@merck.com
<mailto:stephane_jeanfrancois@merck.com> ]
Sent: Friday, August 25, 2000 10:08 AM
To: Multiple recipients of list
Subject: RE: Tritium Real Time Monitoring


Scintrex (bought by IDS), a canadian company, has a great portable device
for that: Model 309A that sucks air and provide you with readings in Bq per
cubic meter, DAC etc.As a matter of fact, they are great for tritium
monitoring of all kind.

Contact: Sanjoy Banerjee
905.669.2280
sbanerje@scintrexltd.com
http://www.idsdetection.com/ <http://www.idsdetection.com/> 


Stephane Jean-Francois, Eng. CHP,

Specialiste en radioprotection/Radiation Safety Specialist,
Gestion des risques/Risk Management
Merck Frosst Canada & Co.
tel: 514.428.8695
FAX: 514.428.8670
email:stephane_jeanfrancois@merck.com


-----Original Message-----
From: Goff, Tom [ mailto:gofft@wipp.carlsbad.nm.us
<mailto:gofft@wipp.carlsbad.nm.us> ]
Sent: Thursday, August 17, 2000 9:58 AM
To: Multiple recipients of list
Subject: Tritium Real Time Monitoring


Does anyone know of a tritium monitor that can indicate concentration in
real time??  Perhaps have an alarm function.

Thanks

Tom Goff
WIPP Radiological Engineering
(505) 234-8861
(fax)  234-6027
e-mail  GoffT@WIPP.Carlsbad.NM.US
page (505) 234-8850  (pager 479)
P.O. Box 2078
Carlsbad, NM 88221
Radiological Engineering:  Anticipating Radiological Problems
             Developing Techniques to Deal with Them


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