[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: Does limits to the public



Alternatively, an annual survey (quarterly) would also confirm this. Note

that a physical survey w/ instruments isn't required by 10 CFR 20 (see

"survey" definition).



Jack Earley

Radiological Engineer





-----Original Message-----

From: John Morgan [mailto:rpconserv@hotmail.com]

Sent: Friday, February 15, 2002 12:11 PM

To: Jack_Earley@rl.gov; radsafe@list.vanderbilt.edu

Subject: RE: Does limits to the public







Your statement seems to confirm my reading of NCRP 116:  since we don't want



to use TLDs (or Luxel)  to show that Joe Public can't get more than 1 mSv 

from combined sources, then it would seem that we are left with the 0.25 mSv



limit.



As I said, I sincerely want to get a handle on this, so any help is 

appreciated.





>From: Jack_Earley@RL.GOV

>Reply-To: Jack_Earley@RL.GOV

>To: rpconserv@HOTMAIL.COM, radsafe@list.vanderbilt.edu

>Subject: RE:

>Date: Fri, 15 Feb 2002 11:26:45 -0800

>

>It's only a de facto limit if you don't want to use area TLDs to show that

>your tour route produces less than 1 mSv per year. You don't care, nor

>should you, what Joe Public does offsite.

>

>Jack Earley

>Radiological Engineer

>

>

>-----Original Message-----

>From: John Morgan [mailto:rpconserv@HOTMAIL.COM]

>Sent: Friday, February 15, 2002 9:26 AM

>To: radsafe@list.vanderbilt.edu

>Subject:

>

>

>

>For design of new facilities we are guided by the recommendations in NCRP

>116 for exposure to members of the public. It states the design protection

>goal is such that  "no member of the public would exceed the 1 mSv annual

>effective dose limit from all man-made sources" (not including medical

>care). However, the confusion comes on p47:

>

>"whenever the potential exists for exposure of an individual member of the

>public to exceed 25% of the annual effective dose limit as a result of

>irradiation attributable to a single site, the site operator should ensure

>that the annual exposure of the maximally exposed individual, from all

>man-made exposures, does not exceed 1mSv on a continuous basis.

>Alternatively, if such an assessment is not conducted, no single source or

>set of sources under one control should result in an individual being

>exposed to more than 0.25 mSv annually."

>

>Isn't this a de facto limit of 0.25 mSv?  How often are we going to be able

>to garrantee that Joe Public isn't touring reactor sites as a prefered

>vacation activity?  So the real question is for RPPs and facility 

>shielding,

>

>should the goal be 0.25 mSv or 1 mSv effective dose for an individual?

>

>

>

>..........................................

>"People demand freedom of speech to make

>up for the freedom of thought which they

>avoid. "

>     - Soren Kierkegaard

>..........................................

>

>John Morgan

>rpconserv@hotmail.com

>

>

>_________________________________________________________________

>MSN Photos is the easiest way to share and print your photos:

>http://photos.msn.com/support/worldwide.aspx

>

>************************************************************************

>You are currently subscribed to the Radsafe mailing list. To unsubscribe,

>send an e-mail to Majordomo@list.vanderbilt.edu  Put the text "unsubscribe

>radsafe" (no quote marks) in the body of the e-mail, with no subject line.

>You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/

>************************************************************************

>You are currently subscribed to the Radsafe mailing list. To unsubscribe,

>send an e-mail to Majordomo@list.vanderbilt.edu  Put the text "unsubscribe

>radsafe" (no quote marks) in the body of the e-mail, with no subject line. 

>You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/

>









..........................................

"People demand freedom of speech to make

up for the freedom of thought which they

avoid. "

    - Soren Kierkegaard

..........................................



John Morgan

rpconserv@hotmail.com





_________________________________________________________________

Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.

************************************************************************

You are currently subscribed to the Radsafe mailing list. To unsubscribe,

send an e-mail to Majordomo@list.vanderbilt.edu  Put the text "unsubscribe

radsafe" (no quote marks) in the body of the e-mail, with no subject line. You can view the Radsafe archives at http://www.vanderbilt.edu/radsafe/