[ RadSafe ] Deadly embrace: NRC policy can expose childrento radioactivit...
BLHamrick at aol.com
BLHamrick at aol.com
Mon Jan 5 20:16:48 CST 2009
If you look at NUREG 1556, Vol. 9, Rev. 2, Appendix U, they have a table for
release of patients, which roughly correlates a release at 33 mCi with 7
mrem per hour at a meter, so let's just say 330 mCi and 70 mrem per hour at a
meter, then approximate with 7 - 8 mrem per hour at 10 feet, but there's some
internal dose to account for as well. I'm not sure that was factored into the
NUREG's table to basically come up with a residual activity in the body, of
which some fraction of the theoretical dose (500 mrem) to friends and family
(in some idealized situation) is from internal dose.
In any case, the real dose to family members will vary considerably,
depending on the patient's excretion of the dose, and dependent upon the patient's
willingness and ability to conform to the doctor's instructions.
No judgement here. Just wanted to get you in the ballpark on the dose issue.
In a message dated 1/5/2009 5:53:48 P.M. Pacific Standard Time, sjd at swcp.com
True, however I would like to know how much exposure will be
received by a person within ten feet for 24 hours.
At 09:51 AM 1/5/09 -0800, Brennan, Mike (DOH) wrote:
>I don't offer opinions on legal issues without acknowledging that I am
>not an expert and might be wrong; it is a shame this lawyer does not
>exercise the same care when making pronouncements about radiation
>issues. While there are a number of questionable statements in this
>column, the lead off sentence it the worst: Just one kiss from a patient
>treated with the radioactive isotope iodine 131 (I-131) can double a
>child's risk of thyroid cancer, according to the authoritative
>International Commission on Radiation Protection." If a (presumably
>adult) patient is swapping significant amounts of spit with a child,
>there are other, more pressing, issues that need to be addressed.
>From: radsafe-bounces at radlab.nl [mailto:radsafe-bounces at radlab.nl] On
>Behalf Of Steven Dapra
>Sent: Saturday, January 03, 2009 4:07 PM
>To: radsafe at radlab.nl
>Subject: Re: [ RadSafe ] Deadly embrace: NRC policy can expose
>childrento radioactivity, by retired........
> The PDF link posted by Celia is an article of approximately 600
>words written by Peter Crane, a retired NRC counsel. It was published
>in the New Hampshire Sentinel Source, the online edition of the Keene
> Crane claims that the NRC instituted a "deregulation" of I-131,
>and did so "at the behest of providers and insurers, eager to cut costs
>and increase profits." (Presumably Crane means health care providers.)
>He says that (unspecified) "international safety standards" call for
>hospitalizing patients given more than 30 millicuries of I-131, but that
>in the US, patients are being sent home with "as much as 400 millicuries
>I-131 in their systems."
> Let us assume that a patient is sent home with 400 millicuries,
>and that a family member is within 10 feet of this patient at all times.
>In 24 hours what will the exposure be to that family member?
>sjd at swcp.com
>At 03:50 PM 1/3/09 +0000, Celia wrote:
> >In the news - FYI
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