Re: ?TEDE From Skin Exposure

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

The definitions you are getting from radsafers are correct:  if you are
dealing only with shallow dose equivalent to the skin, there is no TEDE.
Even the high energy beta from P-32 cannot penetrate to a depth of 1 cm in
tissue. Just be certain there are no other isotopes present, photon emitters
in particular. If emitted from radioactivity on the surface of the skin,
these could deliver a deep dose equivalent. Also, deep dose is not of
concern and is not regulated for the extremities, only the whole body.

>Hi All,
>
>If a worker receives a skin dose from a pure beta emitter (P-32), does 
>this contribute in any way to their TEDE. If so, any guidance would be 
>appreciated.
>
>Chuck Pickering
>USC
>cpickering@engr-serv.usc.edu
>(213) 342-2200
>
Bob Flood
Stanford Linear Accelerator Center
(415) 926-3793
bflood@slac.stanford.edu