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The IAEA (International Atomic Energy Agency) has released a statement on their FACEBOOK page regarding the explosion that took place several hours ago at the Fukushima #1 reactor on Honshu Island.
The graphic below indicates the new evacuation zones, and the IAEA is reporting on the Japanese government’s intent to distribute Potassium Iodide (KI).
Graphic captured from NHK World Video
Latest IAEA update on Japan Earthquake (1340 CET 12 March 2011)
by International Atomic Energy Agency (IAEA) on Saturday, March 12, 2011 at 7:47am
Japan’s Nuclear and Industrial Safety Agency (NISA) has informed the IAEA’s Incident and Emergency Centre (IEC) that there has been an explosion at the Unit 1 reactor at the Fukushima Daiichi plant, and that they are assessing the condition of the reactor core. The explosion was reported to NISA by the plant operator, TEPCO, at 0730 CET. Further details were not immediately available.
Japanese authorities have extended the evacuation zone around the Fukushima Daiichi plant to a 20-kilometre radius from the previous 10 kilometres. At the nearby Fukushima Daini nuclear power plant, the evacuation zone has been extended to a 10-kilometre radius from the previous three kilometres.
The authorities also say they are making preparations to distribute iodine to residents in the area of both the plants.
The IAEA has reiterated its offer of technical assistance to Japan, should the government request this.
The IAEA continues to liaise with the Japanese authorities, and is in full response mode to monitor the situation closely around the clock as it evolves.
Potassium Iodide tablets are used in the event of radiation exposure to prevent certain types of radiation damage.
The CDC explains their use on this webpage.
Potassium Iodide (KI)
What is Potassium Iodide (KI)?
Potassium iodide (also called KI) is a salt of stable (not radioactive) iodine. Stable iodine is an important chemical needed by the body to make thyroid hormones. Most of the stable iodine in our bodies comes from the food we eat. KI is stable iodine in a medicine form. This fact sheet from the Centers for Disease Control and Prevention (CDC) gives you some basic information about KI. It explains what you should think about before you or a family member takes KI.
What does KI do?
Following a radiological or nuclear event, radioactive iodine may be released into the air and then be breathed into the lungs. Radioactive iodine may also contaminate the local food supply and get into the body through food or through drink. When radioactive materials get into the body through breathing, eating, or drinking, we say that “internal contamination” has occurred. In the case of internal contamination with radioactive iodine, the thyroid gland quickly absorbs this chemical. Radioactive iodine absorbed by the thyroid can then injure the gland. Because non-radioactive KI acts to block radioactive iodine from being taken into the thyroid gland, it can help protect this gland from injury.
What KI cannot do
Knowing what KI cannot do is also important. KI cannot prevent radioactive iodine from entering the body. KI canprotect only the thyroid from radioactive iodine, not other parts of the body. KI cannot reverse the health effects caused by radioactive iodine once damage to the thyroid has occurred. KI cannotprotect the body from radioactive elements other than radioactive iodine—if radioactive iodine is not present, taking KI is not protective.
