How much radiation is considered dangerous?

[glbmail.com]

 

How much radiation is considered dangerous? 18 Mar 2011 Opini The Jakarta Post Japan asked local governments to make more frequent radiation checks after explosions at two nuclear reactors, with reports of radiation levels nine times normal briefly detected in Kanagawa near Tokyo. Below are some facts about the health dangers posed by higher radiation levels. People are exposed to natural radiation of about 2 millisieverts (mSv) a year. Exposure to 100 mSv a year is the lowest level at which any increase in cancer is clearly evident. A cumulative 1,000 mSv would probably cause a fatal cancer many years later in five out of every 100 persons exposed to it. Airline crew flying the New York-Tokyo polar route are exposed to 9 mSv a year. A single 1,000 mSv dose causes radiation sickness such as nausea but not death. A single does of 5,000 mSv would kill about half of those exposed to it within a month. Chief cabinet minister Yukio Edano said radiation levels near the stricken plant on the northeast coast reached as high as 4O0 mSv an hour, thousands of times higher than readings before the blast. That would be 20 times the current yearly level for somenuclear-industry employees and uranium miners. Exposure to 350 mSv was the criterion for relocating people after the Chernobyl accident, according to the World Nuclear Association. "Very acute radiation, like that which happened in Chernobyl and to the Japanese workers at the nuclear power station, is unlikely for the population," said Dr Lam Ching-wan, a chemical pathologist at the University of Hong Kong. REUTERS

__._,_.___

Reply to sender | Reply to group | Reply via web post | Start a New Topic

Messages in this topic (1)

Recent Activity:

• New Members 10

Visit Your Group

* Hotel for Meeting, Conference or Seminar? Hotel Salak The Heritage in Bogor, your recommended hotel 45 minutes from JKT, free from disturbing routine activities. Where historical values and modern technology meet. http://www.hotelsalak.co.id Email:mark...@hotelsalak.co.id

* Recommended Coffee Break Snack for your company meeting, training or gathering, contact now Triple Combo Corporate Snack. http://www.triplecombo-snack.com. Email : tripl...@gmail.com or BB PIN: 21DEE5A6 HP: 08129369376

* BTCO provides oil and gas trainings since 2000, visit www.oilgastraining.com to find training schedules and location cities.

* If you have any problems posting your messages, just send the info to oilgasprof...@yahoo.com

*  If you feel disturbed with this email just send a blank email to oilgasprof-...@yahoogroups.com and follow further instructions from the Yahoo.

Switch to: Text-Only, Daily Digest • Unsubscribe • Terms of Use

.

__,_._,___