Re: ??tritium in ice in freezer

[ASHTON MARGARET ELIZABETH <ashtonm@spot.Colorado.EDU>]

	Here at the University of Colorado, we check freezer frost
	levels in every freezer containing tritium every six months.
	We NOTIFY anyone if the frost is above background.  If it is
	above 1,000 dpm/ml, we RECOMMEND defrosting.  If it is above
	100,000 dpm/ml, we REQUIRE defrosting and resurvey the freezer
	a week later to be sure the levels are down.

	As far as sources go, maybe try NCRP report 62, Tritium in the
	environment.  There's probably other similar reports out there
	as well.

	Margaret Ashton	
	University of Colorado,Boulder
	ashtonm@spot.Colorado,EDU

> From: ed.stroud@state.co.us
> 
> Tritium users:  I am trying to establish action levels for tritium 
> contamination in freezer ice. At what levels do you recommend posting the 
> freezer as contaminated? At what level do you recommend decontamination? 
> Does anyone know of a reference book which lists this type of 
> information? Any info on this subject would be appreciated.  Thanks!