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Tuesday, November 29, 2011

☢ TEPCO Rejected 2008 Tsunami Threat Internal Report States ☢

Tokyo Electric Power officials received in 2008 an internal report showing that the the Fukushima Daiichi Nuclear Power plant could be threatened by a tsunami of up to 10.2 metres. However TEPCO officials rejected the report saying that such an threat was "unrealistic".

Because TEPCO the operator of the Fukushima Daiichi Nuclear Power Plant ignored the warnings made in the internal report nothing was done to better protection against seawater if a big tsunami occurred.

The internal report show that the complex was at risk of damage from a tsunami of the size that hit north-east Japan in March, and dismissed the need for better protection against seawater flooding.

radiation detection meters
Tsunami at The Fukushima Daiichi Plant Photograph: Reuters

The tsunami that took out Fukushima and the Daiichi Nuclear Power Plant on the afternoon of 11 March was more than 14 meters high and lead to the destruction and full meltdown of the reactor units.

Masao Yoshida the man in charge of the department overseeing the plant's management in 2008 when the 2008 internal report was submitted, has since been credited with preventing a more serious accident in March.

However now with the evidence showing that the Fukushima Nuclear Power Plant was unprepared for the tsunami, despite the previous reports and warnings, Yoshida is now leaving his post. The manager of the Fukushima plant, Masao Yoshida is now being treated for an unspecified illness and will leave his post on Thursday.

TEPCO in the meantime refuse to disclose what Yoshida's illness is and many are now guessing that it's something to do with radiation sickness. But what is said is that it is not related to his exposure to radiation during the nine months since the Fukushima Disaster began. Yoshida said "On doctors' advice, I have no choice but to be hospitalised for treatment," "It breaks my heart to have to bid farewell in this way to all of the people with whom I have worked since the disaster."

After the tsunami Yoshida approved the continued injection of seawater into one of the damaged reactors, despite being told to abandon the measure by Tepco officials. He was later reprimanded, but won praise from experts who said he had helped cool overheating fuel rods and prevent a worse disaster.

The 40-year-old Fukushima Daiichi Nuclear Power Plant was built on the assumptions that the biggest tsunami that could be expected Fukushimas coast would be 5.7 metres high. Even at that height, the 2008 report said, water levels on site could exceed 15 metres.

There is ongoing discussion what illness Yoshida have for the moment being and with citizens upset that the warnings made back in 2008 fell on def ears. 

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☢ The Radioactive Chat ☢

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Geiger Counters - Radiation Detection Meters - Handheld Radiation Detector

When it comes to radiation detection meters you really have a wide field of gadgets to choose from, however radiation detectors are the most common to use. First of all if you need to know what type of radiation you are looking for. There are Alpha, Beta and Gamma radiation detectors. And also there is neutron emission of nuclear radiation. And all these different types of emissions have radiation detectors for a specific type of radiation that you can buy radiation detector for. Some also measure both Alpha and Beta. Others detect Alpha, Beta and Gamma. While others let you measure Beta and Gamma radiation.

What most people have use for though are Dosimeters you can buy a handheld radiation detector pretty cheap that are good addition to a survival kit. There are different kinds that you can use that will detect radiation. There are radiation badges that will tell you when radiation become high. Workers at nuclear power plants use these to inform them of how much radiation they have been exposed to. Now also children in the Fukushima prefecture have each been given a radiation badge so they know if they are exposed to radiation. Some come in the shape of a pen that you can carry in your pocket while other are made more compact so that you can attach them to your keychain. And then you have what is called a personal radiation monitor. These are also called Dosimeters and also normally called Geiger counters. Although not all use the Geiger-Muller Tube for the radiation detection some use a semiconductor instead. These and mostly the older geiger counters seen are pretty big to carry around, so they might not be best suited for a survival situation where you only need to carry the most important things. However if you have land and want to check radiation around the property and drinking water then these are the geiger counters to get because they are very well built units.

These are the once that you normally see people use. They have different units of radiation detection, because when it comes to radiation there are many standards used. some give the measurements in Rads, while other use Sieverts. Some have the maximum radiation value for the measured radioactivity quite low but they will still give you an idea of the amount of radiation in the area. With the units ranging from between background radiation 0.001 mSv/hr all the way up to 10 Sv/h. Normally a dosimeter will measure radiation in micro siverts per hour. If you were to walk into one of the reactor units at the Fukushima Daiichi Nuclear Plant you probably would get an error reading from your dosimeter because the radiation levels are so high there.

Note that some places outside the exclusion zone in Fukushima that are too radioactive for people to live in have areas where the radiation levels are above 30 Sv/h. So if you are in a area that have high radiation the radiation detectors would also there go off the scale. However Geiger counters or radiation detectors are still favored as general purpose alpha/beta/gamma portable radiation detectors and radiation detection equipment, due to their low cost and robustness. Most come with an LCD Display that show you the radioactivity in the area. Nowdays you will even get alarm sound and the possibility to connect the device to a computer. Either with a Infrared, Bluetooth or USB connection.

So if you look at the radiation detectors for sale that have this, then these radiation detection meters will allow you to make maps of contaminated areas that show where the radiation is high and low. This also will help you to see which areas are becoming more contaminated over time. With several nuclear reactors in the US and around the world located near fault zones that makes it a danger if a big earthquake would hit the area there is always a good choice to have a radiation dosimeter avaliable. I'm sure many in Fukushima would have been grateful to have dosimeters avaliable at the time of the disaster and I am sure you to would be grateful to have a geiger counter handy when you need one.