CANNER Moderator
Posts : 7124 Join date : 2013-04-30
| Subject: Fukushima - latest news Thu Feb 02, 2017 10:00 pm | |
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CANNER Moderator
Posts : 7124 Join date : 2013-04-30
| Subject: Re: Fukushima - latest news Sat Feb 04, 2017 12:32 pm | |
| This actually worries me a little. I already knew it was bad, but this is a new level of bad. [You must be registered and logged in to see this link.] - Quote :
- The facility’s operator, Tokyo Electric Power (Tepco), said atmospheric readings as high as 530 sieverts an hour had been recorded inside the containment vessel of reactor No 2, one of three reactors that experienced a meltdown when the plant was crippled by a huge tsunami that struck the north-east coast of Japan in March 2011.
The extraordinary radiation readings highlight the scale of the task confronting thousands of workers, as pressure builds on Tepco to begin decommissioning the plant – a process that is expected to take about four decades. The recent reading, described by some experts as “unimaginable”, is far higher than the previous record of 73 sieverts an hour in that part of the reactor. For comparison I looked up the radiation levels during the Chernobyl accident. This means the situation at Fukushima is like at least 2 Chernobyls at once, all the time, not just one explosion. And it is getting worse. Radiation levels Chernobyl(wiki)Approximate radiation intensity levels at different locations at Chernobyl reactor site shortly after the explosion are shown in the below table. [64] A dose of 500 roentgens (~5 Sv) delivered over five hours is usually lethal for human beings. [th]Location[/th][th]Radiation (roentgens per hour)[/th][th]Sieverts per hour (SI Unit)[/th] Vicinity of the reactor core | 30,000 | 300 | Fuel fragments | 15,000–20,000 | 150–200 | Debris heap at the place of circulation pumps | 10,000 | 100 | Debris near the electrolyzers | 5,000–15,000 | 50–150 | Water in the Level +25 feedwater room | 5,000 | 50 | | |
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