Here at LANL we use LSC to detect/quantify tritium surface contamination. At the "Instrumentation Section" meeting of the HPS this July 10th in Raleigh I plan to make a presentation on alternative measurement technologies for tritium surface contamination that will detect well below the 49CFR173 limits.
There are tritium surface contamination monitors which use P-10 and are stated as reaching the limits in 49CFR173. You might take a look at Technical Associates smear or surface tritium monitors. Tom On Mon, May 8, 2017 1:32 pm, McLain, Michael J. wrote: > At Columbia Generating Station, we use the LMP-2000 & 3000 for carbon > filter testing. These generally-licensed devices contain EC detectors > with 300 mCi tritium foil sources. The LMP units are occasionally shipped > back to the manufacturer for repair or source replacement. Our internal > auditors identified a gap in in our shipments of the LMPs in that smears > taken to ensure that the 49 CFR 173.443 contamination limits are met were > being counted with a standard hand-held pancake frisker, which of course > wouldn't be able to detect tritium. The questions we would like some > benchmarking on are then: > > 1) The LMP units are excepted from semi-annual leak testing by 10 CFR > 31.5(c)(2)(ii) - does any know if there's a similar exception or exemption > in the DOT regs for the surface contamination measurements? > > 2) Do you use LSC or some other method for counting tritium smears? > > Thanks in advance for your response, > > Michael J. McLain > Principal Health Physicist > Columbia Generating Station > [email protected]<mailto:[email protected]> > 509-377-2062 > > > > Powernet - a service of the Health Physics Society Power Reactor Section To post message: Send or Reply to: [email protected] To unsubscribe: send message to [email protected] archive(Nov2015->): http://www.mail-archive.com/[email protected]/ archive(<Oct2015): http://www.mail-archive.com/[email protected]/ If questions, contact E. Scott Medling, CHP at [email protected]
