TOKYO (AP) — A remote-controlled robot has safely returned with a tiny piece of melted fuel it collected from inside one of three damaged reactors at the tsunami-hit Fukushima Daiichi nuclear power plant for the first time since the 2011 meltdown.
The Tokyo Electric Power Company Holdings, which manages the plant, said Saturday that the extendable fishing rod-like robot successfully clipped a gravel as big as 5 millimeters (2 inches), the size of a tiny granola bit, from the top surface of a mound of molten fuel debris that sits on the bottom of the No. 2 reactor’s primary containment vessel.
The “telesco” robot, with its frontal tongs still holding the melted fuel bit, returned to the enclosed container for safe storage after workers in full hazmat gear pulled it out of the containment vessel earlier Saturday.
The sample return marks the first time the melted fuel is retrieved out of the containment vessel. But the mission is not over until it's certain that the sample's radioactivity is below a set standard and safely placed into a container.
If the radioactivity exceeds the limit, the robot must go back inside the reactor to find another piece. TEPCO officials said they expect the piece is small enough to meet the requirement.
The mission initially started in August for what was supposed to be a two-week round trip but had been suspended twice due to mishaps.
First one was the procedural mistake at the beginning that held up the work for nearly three weeks, then the robot’s two cameras designed to transmit views of the target areas for its operators in the remote control room failed. The camera problem required the robot to be pulled out all the way for replacement before the mission resumed Monday.
Fukushima Daiichi lost its key cooling systems during the 2011 earthquake and tsunami, causing meltdowns in its three reactors. An estimated 880 tons of fatally radioactive molten fuel remains in them, and TEPCO has carried out a number of robotic probes to figure out how to decommission the plant.
Telesco on Wednesday successfully clipped a piece presumably measuring less than 3 grams (0.1 ounce) from the planned area right underneath the Unit 2 reactor core, from which large amounts of melted fuel fell during the meltdown 13 years ago, TEPCO said.
Plant chief Akira Ono said only the tiny spec can provide key data to plan decommissioning strategy, develop necessary technology and robots and retroactively learn how the accident had developed.
The government and TEPCO have set a 30-to-40-year target for the cleanup, which experts say is overly optimistic and should be updated.
No specific plans for the full removal of the fuel debris or its final disposal have been decided.
FILE - Tokyo Electric Power Company Holdings, also known as TEPCO, the operator of Japan's wrecked Fukushima Daiichi nuclear power plant, reveals a robot to be used to retrieve debris at the power plant in Kobe, western Japan, May 28, 2024. (Kyodo News via AP, File)
A device to remove debris from a reactor at the damaged Fukushima Nuclear power plant demonstrates to pinch a stone, as revealed in Kobe, western Japan, May 28, 2024. (Kyodo News via AP, File)
KYIV, Ukraine (AP) — Ukraine's President Volodymyr Zelenskyy urged its allies to stop “watching” and take steps before North Koreans troops deployed in Russia reach the battlefield.
Zelenskyy raised the prospect of a preemptive Ukrainian strike on camps where the North Korean troops are being trained, and said Kyiv knows their location. But he said Ukraine can’t do it without permission from allies to use Western-made long-range weapons to hit targets deep inside Russia.
“But instead … America is watching, Britain is watching, Germany is watching. Everyone is just waiting for the North Korean military to start attacking Ukrainians as well,” Zelenskyy said in a post late Friday on the Telegram messaging app.
The Biden administration said Thursday that some 8,000 North Korean soldiers are now in Russia’s Kursk region near Ukraine’s border and are preparing to help the Kremlin fight against Ukrainian troops in the coming days.
On Saturday, Ukraine's military intelligence said that more than 7,000 North Koreans equipped with Russian gear and weapons had been transported to areas near Ukraine. The agency, known by its acronym GUR, said that North Korean troops were being trained at five locations in Russia's Far East. It did not specify its source of information.
Western leaders have described the North Korean troop deployment as a significant escalation that could also jolt relations in the Indo-Pacific region, and open the door to technology transfers from Moscow to Pyongyang that could advance the threat posed by North Korea’s nuclear weapons and missile program.
North Korean Foreign Minister Choe Son Hui met with her Russian counterpart in Moscow in Friday.
Ukrainian leaders have repeatedly said they need permission to use Western weapons to strike arms depots, airfields and military bases far from the border to motivate Russia to seek peace. In response, U.S. defense officials have argued that the missiles are limited in number, and that Ukraine is already using its own long-range drones to hit targets farther into Russia.
Moscow has also consistently signaled that it would view any such strikes as a major escalation. President Vladimir Putin warned on Sept. 12 that Russia would be “at war” with the U.S. and NATO states if they approve them.
Follow AP’s coverage of the war in Ukraine at https://apnews.com/hub/russia-ukraine
In this photo provided by Ukraine's 24th Mechanised Brigade press service, servicemen of the 24th Mechanised Brigade install anti-tank landmines and non explosive obstacles along the front line near Chasiv Yar town in Donetsk region, Ukraine, Wednesday Oct. 30, 2024. (Oleg Petrasiuk/Ukrainian 24th Mechanised Brigade via AP)
In this image made from video released by the Russian Defense Ministry on Thursday, Oct. 31, 2024, Russian snipers fire towards Ukrainian forces from an undisclosed location. (Russian Defense Ministry Press Service via AP)
In this image made from video released by the Russian Defense Ministry on Thursday, Oct. 31, 2024, Russian soldiers attend combat training for assault units at an undisclosed location in Ukraine. (Russian Defense Ministry Press Service via AP)
In this photo provided by Ukraine's 24th Mechanised Brigade press service, a serviceman of the 24th Mechanised Brigade installs landmines and non explosive obstacles along the front line near Chasiv Yar town in Donetsk region, Ukraine, Wednesday Oct. 30, 2024. (Oleg Petrasiuk/Ukrainian 24th Mechanised Brigade via AP)
