Re: Tritium Effluent Measurement

[Lester.Slaback@nist.gov]

>How is the effluent from the reactor sampled for H-3?  What is the method
>of  collection?

Assuming the tritium is in the form of the oxide .....
Sampling with a cold trap and analyzing with LSC can get you sensitivities
of E-10 to E-11 uCi/cc, depending on humidity levels.

For either HT or oxide .......
Monitoring with a flow through ion chamber can see 1E-6 uCi/cc (or more
likely 2-4 E-6 uCi/cc).
Monitoring with a flow through proportional counter will give you a factor
of 10 or better sensitivity over the IC.

see NCRP 47 for more info.

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the above are the personal musing of the author,
and do not represent any past, current, or future
position of NIST, the U.S. Government, or anyone else
who might think that they are in a position of authority.
NBSR Health Physics
NIST
Gaithersburg, MD 20899
301 975-5810
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Lester.Slaback@nist.gov
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