Re: HELP! Criticality Dose Estimate Trivia

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

Hanford report, HW-73891, "A Method for Immediate Detection of High Level
Neutron Exposure by Measurement of Socium-24 in Humans," has the equation:

D = 2.5 R/M

where:

R is the count rate, in counts per minte, for a GM tube instrument calibrated to
indicate 3200 (cpm)/(mR/hr) with a radium source

M  is the body weight, in pounds

D is the human dose, in rads.

This is with the survey instrument held against the stomach and abdomen area.
The report  states that "Similar count rates may be obtained by positioning the
probe under the arm and flat against the side of the chest."

In an actual event, it would be important to distinguish between activation and
contamination dose rates.

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

Bill Lipton
liptonw@dteenergy.com


"Weaver, Ellsworth III" wrote:

> Dear Radsafers,
>
> I am about to present a class on severe radiation accidents. I know that one
> of the questions from the class is going to be about estimating neutron dose
> using a hot-dog probe put in the axilla of the victim. Does anyone know what
> the conversion factor was? I know it must be out there somewhere. I looked
> through the archives with no luck.
>
> One other thing, what is the best guess now of the actual Gy or rad received
> by Mr. A, B, & C? I recall that the ANS reported much lower doses.
>
> Thanks in advance from a harried (but hairless) teacher,
> J. Ellsworth Weaver
> PG&E's Diablo Canyon Power Plant
> Avila Beach, CA
> 805.545.3029
>
> jew1@pge.com
>
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