[ RadSafe ] [" Quality of radiation protection

[Jerry Cohen]

And I wonder how one might evaluate the "quality" of radiation protection to 
determine whether one scheme might be better or worse than another.
Any ideas????
Jerry Cohen


________________________________
From: parthasarathy k s <ksparth at yahoo.co.uk>
To: "pottert at erols.com" <pottert at erols.com>; The International Radiation 
Protection (Health Physics) Mailing List <radsafe at health.phys.iit.edu>
Sent: Wed, November 7, 2012 7:31:37 PM
Subject: Re: [ RadSafe ] [RadSafe] Maximum PermissIble Concentrations (NCRP 22) 
Days of "body burden" to the times of "ALI"

Dear Dr Thomas Potter,

I always wonder whether radiation protection improved from the days of "body 
burden" to the times of "ALI" I recall using well thumbed copies of NBS books in 
the formative years of my career.Though the source books for much of the data 
were not available, reading them and using them occasionally wqs very 
satisfying.

Regards
Parthasarathy


________________________________
From: THOMAS POTTER <pottert at starpower.net>
To: radsafe at health.phys.iit.edu 
Sent: Thursday, 8 November 2012, 3:22
Subject: Re: [ RadSafe ] [RadSafe] Maximum PermissIble Concentrations (NCRP 22)

I have a version of NCRP Report No. 22, "Maximum Permissible Body Burdens and 
Maximum Permissible Concentrations of Radionuclides in Air and in Water for 
Occupational Exposures," published as National Bureau of Standards Handbook 69 
in 1959 with Addendum 1 dated 1963. (The NBS document cover is literally wrapped 
around the NCRP document.)

The document states that the development of these tables was a joint project 
undertaken by the ICRP and the NCRP, and that Handbook 69 (NCRP 22) contains 
only excerpts (primarily the tabular results of this development) from the more 
comprehensive ICRP report, and excludes much of the text describing the 
development and data used. Footnote 5 is a citation to the comprehensive ICRP 
report, "Recommendations of the ICRP, Report of the Committee on Permissible 
Dose for Internal Radiation--1958 revision; to be published, Pergamon Press, 
London, England."

I'm 99% sure that NCRP 22 is a compilation of tables of maximum permissible body 
burdens, concentrations in air, and concentrations in water, included and more 
fully documented in ICRP Publication 2, 1959, "Report of Committee II on 
Permissible Dose for Internal Ratiation (1959)." I very strongly suspect that 
your "ICRP-1955" citation refers to ICRP Publication 2.

I do not find ICRP 2 available on the internet, although it is described briefly 
at:

http://www.icrp.org/publication.asp?id=ICRP%20Publication%202

I have a xerox copy of the parts of ICRP 2 not included in NCRP 22. I also have 
a 30-page xerox copy of a 1962 supplement to ICRP 2, which includes errata. 


Back in graduate school at the Univ of Michigan in the early 1970s this entire 
package (including Handbook 69) was provided to us health physics students as 
the basis for almost all MPC values in 10 CFR Part 20. (Some values for Sr-90, 
I-131, and possibly Cs-137 were modified by the Federal Radiation Council.)

If you are located in the Washington, DC area, I would happily loan you this 
package. I would also be willing to send you a copy of the ICRP material (about 
2 inches thick) at cost. (I also have a National Library of Medicine call slip 
showing a call number "WN 610 I62r 1959" for ICRP Publication 2.)

Regards,
Thomas Potter


---- Original message ----
>Message: 5
>Date: Tue, 06 Nov 2012 23:59:03 +0000 (UTC)
>From: Brad Keck <bradkeck at mac.com>
>Subject: [ RadSafe ] Maximum Permissble Concentrations (NCRP 22)
>To: "The International Radiation Protection (Health Physics) Mailing
>    List"    <radsafe at health.phys.iit.edu>
>Message-ID: <d50407cd-4063-6687-a412-ed9fee0ed428 at me.com>
>Content-Type: text/plain; CHARSET=US-ASCII; format=flowed
>
>RadSafers,
>
>I am seeking a blast from the past.  I am trying to reproduce some calculations 
>for MPC - as noted in NCRP 22 which in turn references ICRP-1955.  Can anyone 
>provide a straightforward reference calculation of MPC, or maybe even provide 
>the reference data  from ICRP-1955?  
>
>
>In particular, I would like to understand the differences in assumptions 
>involved between the MPC and our more modern ALI - I can't arrange a cocktail 
>party for the effort, unfortunately - but maybe someone can help me out here 
>with a bit of history?  
>
>
>Best and Thanks,
>
>Brad 
>
>Bradly D. Keck, Ph.D., CHP
>bradkeck at mac.com
>
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