Highest Radiation Yet Detected At Fukushima Dai-Ichi – Beyond Geiger Counter’s Highest Reading Level

August 1st, 2011 · · Environment

Given the lack of news coverage, you might think that the nuclear disaster in Japan is somehow contained. Far from it, the highest level of radiation yet has just been detected at Tepco’s Fukushima Dai-Ichi plant. How high is the level of radiation? Too high for the Geiger counter, as it maxes out at 10 sieverts an hour, as Bloomberg reports:

“Tokyo Electric Power Co., operator of Japan’s crippled Fukushima Dai-Ichi nuclear plant, said it detected the highest radiation to date at the site. Geiger counters, used to detect radioactivity, registered more than 10 sieverts an hour, the highest reading the devices are able to record, Junichi Matsumoto, a general manager at the utility, said today. The measurements were taken at the base of the main ventilation stack for reactors No. 1 and No. 2.”

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Arnie Gundersen from Fairewinds has been the most reliable source on this still unfolding disaster. He will have a new update out soon. Until then, here’s his last update from July 19, still very relevant:

“Ex Japanese Nuclear Regulator Blames Radioactive Animal Feed on “Black Rain”

The first thing is the condition of the site itself. All 3 Fukushima reactors that were running, I, II and III, and the fuel pool on Unit 4, continue to release radiation. Now, you do not see it in the day because the days are warm now, but you do see it at night. I have gotten many, many emails about this, where people think that the site is blowing up. In fact, it is steam coming out of these reactors and hitting cold air from the Pacific. So they continue to release radiation. But most of the radiation from Fukushima was released in March and in April. At this point, there is a lot less radiation every day than there was in March and April. About 90-95% of the radiation from Fukushima was released in the first 6 weeks of the accident. While it continues to release radiation, there is nowhere near as much on a daily basis. On the other hand, Fukushima may be continuing to release radiation for a long time.

The Japanese are building large tents to put over each of these reactors. The first tent is in fabrication now and it will cover reactor 1, and then they will move to reactor 2, and reactor 3, and finally reactor 4. Those tents are designed to prevent the steam from getting out and to collect it as water and treat it. So beginning in September, most of the airborne radiation will be eliminated from Fukushima, at least Unit 1. More and more though, we will wind up with the contaminated ground water and the contaminated liquids that are on site. There is nothing in the foreseeable future to eliminate those. As a matter of fact, the Japanese announced that it is going to be 10 years before they begin, begin to remove those cores from the bottom of the containment. There is no technology right now to remove them. Remember they have melted through the nuclear reactor and they are lying on the floor of the nuclear containment….”

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