RE: Patient Excreta -Reply -Reply

[Mark Hanlon <MarkH@nch.edu.au>]

This was also the reasoning at the New Children's Hospital, where we do
have two tanks. 

However it is not quite so simple, as one can take into account the dilution
factor, unless material drained to the tank is always "radioactive".  In our
case, the tanks are 6000 litres - far in excess of the volume of sewage
produced by a child in the week or so of post-treatment hospital stay.  If
the tank contents can be mixed effectively, there is a substantial dilution
of the radioactive material.

The second tank also gives us some security should a fault be
discovered in the first. 

Mark Hanlon,
Radiation Safety Officer,
The New Children's Hospital,
P.O. Box 3515,
PARRAMATTA, NSW, 2124
Australia

Phone  61 2 9845 3324    FAX  61 2 9845 0831

email  markh@nch.edu.au
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