MOBILE USERS: m.isthmus.com
Connect with Isthmus on Twitter · Facebook · Flickr · Newsletters · Instagram 
canoe rack
Thursday, September 18, 2014 |  Madison, WI: 51.0° F  Fog/Mist
Collapse Photo Bar

millirem math

Wiis, PlayStations, iPads, blogging platforms, Facebook and anything else worthy of buzz in the digital world.

millirem math

Postby Nick Berigan » Tue Nov 24, 2009 7:40 am

from cnn
"One worker was found to have received 16 millirem of exposure, and others received lower levels of contamination. The annual occupational dose limit for workers at Exelon plants is 2,000 millirem, the statement said. (presumably they mean "a worker" here)

Radiation exposure from a chest X-ray is about 6 millirem, according to the Nuclear Regulatory Commission."

So that means an acceptable annual dose is equivalent to 333 xrays?
Nick Berigan
Forum God/Goddess
 
Posts: 591
Joined: Thu Apr 03, 2003 5:12 pm

Re: millirem math

Postby TheBookPolice » Tue Nov 24, 2009 9:23 am

http://web.mit.edu/newsoffice/1994/safe-0105.html

2 - One chest X-ray (the whole body equivalent). A typical X-ray exposes the chest to a dose equal to 20 millirems at the entrance and 1 milliRem at the exit. Averaging this exposure over the whole body yields a whole body equivalent of about 2 millirems.


2 - Annual exposure due to watching four hours of television every day.


The maximum permissible exposure for a person under 18 working with radiation is one-tenth the adult limit or not to exceed 500 millirems per year above the 300+ millirems of natural sources, plus medical radiation. This was established in 1957 and reviewed as recently as 1990.


(Bear in mind, this is from 1994, but the math is the same.)
TheBookPolice
Forum God/Goddess
 
Posts: 8371
Joined: Fri Aug 04, 2006 1:09 pm
Location: The mystical Far East


Return to Technology & Video Games

Who is online

Users browsing this forum: No registered users and 1 guest

moviesmusiceats
Select a Movie
Select a Theater


commentsViewedForum
  ISTHMUS FLICKR

Promotions Contact us Privacy Policy Jobs Newsletters RSS
Collapse Photo Bar