AW: [ RadSafe ] Myth or Fact?

[parthasarathy k s]

Let me add some more numbers.

In the high natural backgroun radiation areas in Kerala, external doses of the order of 70 mSv has been measured in a large number of houses (Radon /thoron daughter contribution not included!). This area is well known for its monazite deposits.(thorium concentration up to 8%). Over a hundred thousand people are living on this area.

 Rate of incidence of cancer in high and low radiation areas did not show any significant differences. Study has been possibly very exhaustive. Hopefully all cancer cases have been recorded.

 But radiation being a vary weak carcinogen a few cases  of cancer  can upset the balance. Suffice it to say  that  we need not lose sleep over  a few microsievert here  or a few there! Neither the harm nor benefit from radiation exposure has been conclusively demonstrated in the study.

Regards
  K.S.Parthasarathy Ph.D
  (Formerly, Secretary, Atomic Energy Regulatory Board, India)
   
  Raja Ramanna Fellow
  Strategic Planning Group
  Board of Research in Nuclear Sciences
  Department of Atomic Energy
  GN 18, Vikram Sarabhai Bhavan
  Mumbai 400094, INDIA
   
  91+22 25555327 (O)
  91+22 2 5486081(O)
  91+22 2 7706048(R)
  9869016206 ( Mobile)
   
   
  
----- Original Message ----
From: Rainer.Facius at dlr.de
To: bev at adcoservices.com; radsafe at radlab.nl
Sent: Friday, 25 August, 2006 4:12:12 AM
Subject: AW: [ RadSafe ] Myth or Fact?

Jim:

In Europe a skilled dentist (or his technician) with state-of-the-art equipment will expose you to about 0.01 mSv effective dose per examination. 

At sea level you get about 3 mSv natural radiation where the bulk of 2 mSv comes from exposure to radon, in Denver you may get more than 3.6 mSv and in Cornwall or other areas of high natural background radiation this can approach 10 mSv - per year.

So depending where you live that ratio will vary between 300 and 1000 and any attempt to associate these increased exposures with health detriments failed so far - suggestive evidence pointing even towards the opposite, i.e., improvements.

Best regards, Rainer

 

Dr. Rainer Facius
German Aerospace Center
Institute of Aerospace Medicine
Linder Hoehe
51147 Koeln
GERMANY
Voice: +49 2203 601 3147 or 3150
FAX:   +49 2203 61970


________________________________

Von: radsafe-bounces at radlab.nl im Auftrag von Bev
Gesendet: Do 24.08.2006 23:34
An: radsafe
Betreff: [ RadSafe ] Myth or Fact?



Hello Radsafers,

    I recently read a book called "Myths, Lies, and Downright Stupidity" by John Stossel of 20/20 fame. In it he makes a case for food irradiation, which was refreshing to hear from a member of the media.

 Everything was going fine until I got to the part where he states "Every year, the average U.S. citizen is exposed to natural radiation equal to about 360 dental X-rays."

Now, I'm certainly no expert on this, but that figure does seem pretty high to me. So, I'll ask the experts, (you folks), what you think. Myth or fact? I'm curious.

Thanks,

Jim Bell

ADCO Services
708-429-1660 Ph.
708-429-9759 Fax

jimsradco at aol.com


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