Is Fukushima Leaking … Or Is the the Reactor Wholly Uncontained?
You may have heard that Tepco – the operator of the stricken Fukushima nuclear power plants –announced a large leak of radioactive water.
You may have heard that the cooling system in the spent fuel pools at Fukushima has failed for a second time in a month.
This is newsworthy stuff … but completely misses the big picture.
Japanese experts say that Fukushima is currently releasing up [...]
North Carolina, Virginia, Maryland, New Jersey, Pennsylvania, New York and Connecticut
“Because of the size of [Hurricane Sandy], we could see an impact to coastal and inland plants,” Neil Sheehan, a spokesman based in Philadelphia for the U.S. Nuclear Regulatory Commission, said by phone today. “We will station inspectors at the sites if we know they could be directly impacted.”
The NRC met earlier today to discuss the necessary precautions to take [...]
by George Washington
The Greatest Single Threat to Humanity: Fuel Pool Number 4
We noted days after the Japanese earthquake that the biggest threat was from the spent fuel rods in the fuel pool at Fukushima unit number 4, and not from the reactors themselves. See this and this.
We noted in February:
Scientists say that there is a 70% chance of a magnitude 7.0 earthquake hitting Fukushima this year, and a 98% chance within the next 3 years.
Given that nuclear expert Arnie Gundersen [...]
Cold Shutdown … or Escape of Hot Fuel?
January 20, 2012
I noted last month in connection with Tepco’s announcement of “cold shutdown” of the Fukushima reactors:
If the reactors are “cold”, it may be because most of the hot radioactive fuel has leaked out.
The New York Times pointed out last month:
A former nuclear engineer with three decades of experience at a major engineering firm … who has worked at all three nuclear power complexes operated [...]
No Fly Zone Over Fort Calhoun Nuclear Plant Due to “Hazards
The Federal Aviation Administration issued a temporary flight restriction over the Fort Calhoun Nuclear Power Plant until further notice due to “Hazards”. This would normally be a precautionary measure after an electrical fire disabled cooling for the spent fuel rod pool as outlined below. The question is why is this still [...]
Tepco separately released its analysis on the timeline of the meltdown at unit No. 1. According to the analysis, the reactor core, or the nuclear fuel, was exposed to the air within five hours after the plant was struck by the earthquake. The temperature inside the core reached 2,800 degrees Celsius in six hours, causing the fuel pellets to melt away rapidly.
Within 16 hours, [...]
“…………How did Japanese workers at the crippled Fukushima nuclear plant jury-rig fire hoses to cool damaged reactors? Is contaminated water from waste pools overflowing into the Pacific Ocean? Exactly who is the national incident commander?
The answers to these and many other questions are unclear to U.S. nuclear scientists and policy experts, who say the quality and quantity of [...]
by Eric deCarbonnel, Marketskeptics
Below is a great video explaining what is going on and what the risks are
No water in spent fuel pool of Unit 4
AP reports that there is no water in spent fuel pool of Japan plant.
NRC: No water in spent fuel pool of Japan plant
Mar 17, 12:42 AM EDT
WASHINGTON (AP) — The chief of the U.S. Nuclear Regulatory Commission said all the water is gone [...]