Re: Hot items answers

[bflood@SLAC.Stanford.EDU (Bob Flood)]

>#2  The Fiestaware reads 5,000 cpm and also makes a good alpha check source.
>

Perhaps not all Fiestaware is created equal. In my nuclear power days when I
was part of the corporate office, I spent some outage time supplementing the
training staff to provide rad worker training to people hired just for the
outage. (job description: teaching Bubba not to pick his nose in a c-zone).
The training staff had a lovely bright orange plate we used to demonstrate
why a manual frisk should be done slowly. That plate would put a standard
pancake probe (HP-260) and RM-14 offscale on the 50,000 cpm range, and get
about 20,000 cpm with the HP-190.

What was very effective in demonstrating the difference caused by probe
speed was to show how the frisker alarmed on the highest scale when held at
the plate, and then show how the click rate barely changed and there was no
alarm when moved quickly past the plate on the lowest scale.

Bob Flood
Unless otherwise noted, all opinions are mine alone.
(415) 926-3793
bflood@slac.stanford.edu