NHK reports that the decommissioning authority in charge of dealing with the aftermath of the Fukushima disaster is now considering a sarcophagus to entomb the failed reactors rather than attempting to remove the melted fuel, debris and buildings.
The authority told NHK they would still consider the two fuel removal techniques but they are adding the sarcophagus option to the list. They did not elaborate about why it is now being officially added to the considered options for the plant.
The idea of leaving the plant as is and creating a sarcophagus around the three melted down reactors is extremely problematic. The groundwater issue is just one problem that would be a permanent problem. Even the ice wall if it eventually works as planned can only operate for a few years. Erosion and groundwater flows would create a permanent problem for the ocean and the region around the plant. This would also leave the fuel and crumbling buildings in place. Building failures, radioactive dust and fuel debris would all still be in place. This would need to be managed not just due to aging but further natural disasters such as typhoons and tsunami. Current problems include fuel fragments that have been found in unit 1′s torus room basement water. These have been a concern as groundwater flows through these basements that if improperly managed, more of these fuel fragments could leave the basement into the groundwater.
At Chernobyl, the new cover building there is expected to be needed for 100 years while they attempt to eventually deal with the damaged building. When and how that happens is still vague decades later.
Cases of a debilitating disease that results in lesions on sea turtles off north Queensland are rising, with a researcher suspecting a link between the disease and the health of the Great Barrier Reef.
Fibropapillomatosis caused by the herpes virus and results in lesions on the turtle’s body
Lesions can grow on an animal’s eyes so they cannot see predators and cannot catch food
“Hotspot” in Cockle Bay at Magnetic Island may provide clues to the disease, with turtles only 100 metres away unaffected by tumours
The disease, called fibropapillomatosis (FP), is caused by the herpes virus and results in lesions on the turtle’s body.
The disease has been found across the world and more recently in places like Townsville.
James Cook University researcher Karina Jones has been studying the disease in turtles found near Magnetic Island off Townsville.
She said the disease could contribute to the death of turtles.
“It grows on their eyes, they can’t see predators, they can’t catch food, so sometimes they slowly starve to death — it’s not a nice thing for the turtles to experience,” she said.
The Article States Global Warming…. What do you think?
Cleanup crews trying to mitigate Japan’s never-ending radiation crisis at Fukushima ran into more problems recently after sensors monitoring a drainage gutter detected a huge spike in radiation levels from wastewater pouring into the Pacific Ocean.
The Tokyo Electric Power Company says radiation levels were up to 70 times, or 7,000 percent, higher than normal, prompting an immediate shutdown of the drainage instrument.
The first readings came around 10 a.m. local time on February 22, setting off alarms not once but twice as radiation levels spiked to extremely high levels.
“The levels of beta ray-emitting substances, such as strontium-90, measured 5,050 to 7,230 becquerels per liter of water between 10:20 a.m. and 10:50 a.m.,” reported The Japan Times. “TEPCO requires radioactivity levels of groundwater at the plant discharged into the sea to remain below 5 becquerels.”
TEPCO shut off leaky gutter, but radiation continued to spike throughout day
The gutter was quickly decommissioned to prevent further radiation emissions, but the leaks reportedly continued throughout the day, with radiation levels hovering between 10 and 20 times higher than normal. TEPCO says it doesn’t know what caused the sudden radiation spikes.
“With emergency surveys of the plant and monitoring of other sensors, we have no reason to believe tanks storing radioactive waste water have leaked,” stated a plant official to the media. “We have shut the gutter [from pouring water to the bay]. We are currently monitoring the sensors at the gutter and seeing the trend.”