[ RadSafe ] ~120 lb KCl in bed and/or ~ 3 lb Thoriated welding rodsin seat for hormetic dose

[Muckerheide, Jim (CDA)]

Hello Howard,  

The benefit from these sources does not dependent much on the proximity
dose-rate measurements.  We need the gamma/x-ray spectra. The skin dose
doesn't contribute much, although there is immunological stimulation in
the skin (as there is with UV radiation). The significant doses are at
some depth which depends on the higher energy component.  This affects,
e.g., the spleen, blood, bone marrow, Peyer's patches, and other organs.


Diagnostic x-rays and gamma sources (e.g., Cs-137 and Co-60) have the
penetrating ability to be used for low-dose immunotherapy, e.g., in the
Medium Energy-, and Low Energy-, Total Body Irradiators (METBI and
LETBI) at Oak Ridge.  With multiple sources in the ceiling, the patient
would be several hours on a gurney in the METBI, and several days in the
LETBI room. (There was also some use of Ra, etc. sources.  I suspect
that the primary penetrating gamma from Rn, or uranium ore, is the
Bi-214 gamma.  Are there others?)

Regards, Jim 
 

>-----Original Message-----
>From: radsafe-bounces at radlab.nl 
>[mailto:radsafe-bounces at radlab.nl] On Behalf Of howard long
>Sent: Tuesday, February 20, 2007 1:13 PM
>To: Flanigan, Floyd; Pete_Bailey at fpl.com; radsafe at radlab.nl
>Subject: [ RadSafe ] ~120 lb KCl in bed and/or ~ 3 lb 
>Thoriated welding rodsin seat for hormetic dose
>
>3, 40lb bags of KCl are under the table in my office, 6' away.
>  I am going to put them under my mattress for a hormetic dose.  
>  I find, 
>  at 6" the PalmRad reads 0.040 mR/hr 
>   (and, right on them, it reads 0.050 mR/hr   
>  vs 0.013 mR/hr on my desk),
>  This would supplement ~ 0.1 rem/year, I calculate, sleeping 
>8 hours/d over them.
>   
>  My 5 lb of scrap thoriated welding rod belt reads 0.147 
>mRd/hr at 1 " above it.
>  But It is too clumsy to wear much.
>   
>  2 lb 10 oz (40), packaged new rods on my office seat read 
>0.162 mR/hr  
>  on the pillow, 1" above, where I sit average 3 hours/day, 300 d/year 
>  So ~ 0.2 rem/year (~1,000 hours in that chair) would also be 
>     an amount similar to the Taiwan apt or NSW exposure,
>  much less than residents of Ramsar, Iran (see online article 
>in search), .
>   
>  Howard Long 
>   
>  "Flanigan, Floyd" <Floyd.Flanigan at nmcco.com> wrote:
>  Well ... I ran a little test yesterday. I took a 50 pound bag of Ice
>Melt brand ice melting compound which contains Potassium Chloride,
>through a Gamma 60 portal monitor just for fun. It lit up 
>every detector
>like a Christmas tree. Now ... if 50 pounds of the stuff won't pass a
>Gamma 60 set @ 45nCi ... what kind of background dose rate could be
>expected in the vicinity of a 20,000 ton pile of the stuff?
>
>Floyd W. Flanigan B.S.Nuc.H.P.
>Sr. H.P. Analyst 
>Prairie Island
>
>-----Original Message-----
>From: Pete_Bailey at fpl.com [mailto:Pete_Bailey at fpl.com] 
>Sent: Tuesday, February 20, 2007 10:11 AM
>To: radsafe at radlab.nl
>Cc: Flanigan, Floyd
>Subject: re: Who is using Radiation Producing Machines?: KI
>
>
>> Machines aside, is anyone handling the stock-piles of
>> Potassium Chloride for ice remediation by State DOTs?
>
>
>ummm, why,,,do ya need more ?
>
>Florida has lots of KI, not too much ice on the road :-)
>
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