The "preponderance of evidence" clearly shows an acute THRESHOLD at
between 10 and 50 rem. For example, bomb survivors with 1-9 rad developed
in the next 20(?) years ONLY 34 breast cancers where 42.3 were expected;
10-49 rad 37 b cancers (33.0 expected); and 50-99 rad 11 b cancers
(9.4 expected); 100-199 rad 16 (6.5 expected and >200 rad 18 (6.0 expected).
Other cancers and longevity were similarly BETTER at under 10 rads than
over 100 rads, acute exposure. THRESHOLD.
It is SAFE (under 10 rads, anyway).
Low dose rate threshold seems much higher, in Ramisar, Kerala, Taiwan apartments, etc , where BENEFIT is shown at over 100 rem spread over 10 years.
What is YOUR proposal for HP action. to mitigate a nuclear disaster?
Howard Long.
"Field, R. William" wrote:
You can not be serious?At 09:08 AM 3/12/2002 -0800, you wrote:
Paul,
The threshhold dose I nominate is Luckey's - 50 cGy (rem, rad for closest to
source).
"SAFE - For ___ hours here, more good than harm is likely (<50 rad)."Another might be, "No one has ever had symptoms from ___ hours of this
exposure."
(<100 rem).Howard Long
Paul lavely wrote:
> Your sign wording is fine; however, I need to know what the dose is
> that we will regard as safe. Some would say that less than 100 mrem
> is okay. Other point to NCRP (or is it ICRP) that 1 mrem is "okay."
>
> So, if folks can decide on a dose that is safe - and if we can get
> the regulators to agree - the signage will not be a problem.
>
> Remember that we have recently seen a major facility closed based at
> least in part on doses to the public of less than 0.1 millirem per
> year.
>
> Paul
> lavelyp@uclink4.berkeley.edu
>
> >"SAFE" SIGN?
> >Paul,
> >How about you posting an example of a "SAFE" sign wording that HPs
> >could put up in areas where people would have the fears you listed,
> >like after a "dirty" explosion.
> >
> >You could do better than this,
> >SAFE
> >to be in ___ feet of here, for ___ hours
> >without worry of any ill effect from radiation.
> >(signed, John Doe, Health Physicist [date])
> >phone # ____
> >Howard Long
>
> --
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