Re: FW: X-Ray Radiation and Personnel Monitoring

[William V Lipton <liptonw@dteenergy.com>]

Maybe the safety features on x-ray diffraction units have improved a lot
since I was last involved, but unless you're confident that the machine is
"damn fool proof," I'd go with individual monitoring.

If you don't have individual monitoring records, the plaintiff's consultant
will be glad to calculate the dose for you.

The opinions expressed are strictly mine.
It's not about dose, it's about trust.

Bill Lipton
liptonw@dteenergy.com

Sandy Perle wrote:

> Personnel Monitoring is only required as follows:
>
> (1) If under quarterly limits, the requirement is that the dose is
> expected to exceed 25% of the regulatory limit (1.25 rem). Therefore,
> if the individual is expected to exceed 312 mrem/qtr, monitoring is
> required.
>
> (2) If under annual limits, the requirement is that the dose is
> expected to exceed 10% of the regulatory limit (5 rem). Therefore, if
> the individual is expected to exceed 500 mrem/yr, monitoring is
> required.
>
> To provide monitoring at levels below this level is a facility
> decision, based on many factors, such as potential litigation
> concerns, the student's attitudes and concerns, etc. This is a
> decision that each facility must make.
>
> Area badges could be considered, and a single badge for a group could
> be considered. Your task would be to correlate the dose back to an
> individual, and be able to fend off adversity when there is
> controversy stating that THIS specific dose can NOT be correlated
> directly to a SPECIFIC individual.
>
> You also need to consider the dose rate from the units where the
> students are working. If there is a high potential dose, and the
> anticipated annual or quarterly dose is expected to be below required
> monitoring levels, you need to consider the potential dose from the
> unit,, and potential problems.
>
> Lots of factors to consider.
>
> Sandy Perle
> E-Mail: sandyfl@earthlink.net
> Personal Website: http://www.geocities.com/capecanaveral/1205
>
> "The object of opening the mind, as of opening
> the mouth, is to close it again on something solid"
>               - G. K. Chesterton -
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