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Re: Worse case vs. normal operations

I would say to use the worse CREDIBLE case - and then expect to be
challenged to PROVE that and to explain what you do to ASSURE that and
how you would monitor to DOCUMENT that and conditions under which you
would reopen consideration.  Of course it all depends on who audits you
- and the other usual caveats.

In SOME cases - a little more shielding is cheaper.  In cases of open
cell radiography I have found it helps greatly to get them to use the
collimator (if they can find it).

Susan McElrath wrote:
> 
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> This question concerns an industrial x-ray installation in the state of
> California.  When demonstrating compliance with requirements for doses to
> non-radiation workers, must you show worse-case conditions (an individual
> plants themselves next to the unit 24-hours a day and the unit operates
> 24-hours a day), or may you use normal conditions, e.g., an individual is in
> the area several feet away from the unit for 8-10 hours per day and the unit
> operates 6 hours a day?
> 
> Susan McElrath
> smcelrath@atl.mediaone.net <mailto:smcelrath@mindspring.com>
> 
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