Yohak

FAQs: Japan nuclear concerns

In Radiation on March 18, 2011 at 7:45 AM

WHO – 17/03/2011 [LINK]

WHO, the directing and coordinating authority for health within the United Nations system, has published today an eight pages document about information on radioactivity and health actions to take in case of being exposed.

The World Health Organization begins the document with acknowledgement to the safety measures of the Japanese authorities but explains that the whole situation could change and more strong measures would need to be taken.

As it can be seen, another key international organization has doubts about the crisis at Fukushima is under control and shows its concern about the development of future severe problems.

 

 

[EXTRACTS]

The actions proposed by the Government of Japan are in line with the existing recommendations based on public health expertise. The government is asking people living within 20 km of the Fukushima Daiichi nuclear power plant to evacuate and those between 20 km and 30 km away from the plant are asked to stay indoors in unventilated rooms.

 

 

This assessment can change if there are further incidents at these plants and WHO is following the situation closely. However, radiation-related health consequences will depend on exposure. Exposure in turn is dependent on the amount of radiation released from the reactor, weather conditions such as wind and rain at the time of the explosion, the distance someone is from the plant, and the amount of time someone is in irradiated areas.

 

 

The radiation dose can be expressed in units of Sievert (Sv). On average, a person is exposed to approximately 3.0 mSv/year of which, 80% (2.4 mSv) is due to naturally-occurring sources (i.e., background radiation), 19.6 % (almost 0.6 mSv) is due to the medical use of radiation and the remaining 0.4% (around 0.01 mSv) is due to other sources of human-made radiation.


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