Re: 120-ml and tool monitor

[Brent_Robinson@fpl.com]

I do not use SAMs/tool monitors to unconditionally release oil.    I suspect
that your ODCM requires that analysis of non-water liquids be performed on a
system with an a priori LLD meeting or exceeding water LLD values (i.e.
environmental LLDs) for gamma emitters.   With that assumption, I would not
think you could justify an a priori LLD for all the required radionuclides with
a SAM/tool monitor, especially with a relatively small 120 ml sample and a short
5-30 second count time.  Unlike a germanium detector (which has energy and
efficiency curves, as well as background determination at each channel), a SAM
tool monitor is generally calibrated with 1 to 2 nuclides (in power reactors
probably Cs-137 and/or Co-60), with a simple background and no energy
compensation.   I am curious to know how someone does this .... I'll be waiting
with beta breath!

"This is my thoughts ..... only!

brent_robinson@fpl.com


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