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Spent fuel pools are undergoing desalination and the Japanese government has demanded an updated decommissioning schedule for the severely damaged Fukushima Daiichi nuclear plant. Developments over the last week at the Tokyo Electric Power Co. reactors include: Government Demands Revised “Roadmap”...

Although conditions within damaged reactors at the Fukushima Daiichi nuclear plant are improving, ongoing analysis of the station blackout and Tokyo Electric Power Co.’s response continues to unveil disturbing details of the March accident. Developments over the last week include: Plant Manual...

(Please visit the site to view this video) This video, shot Thursday and released the next day, shows the inside of Fukushima Daiichi unit 2. The robot shooting the footage traverses multiple floors of the unit's reactor building, evaluating equipment and taking radiation readings visible from...

Developments over the last week at the Japanese nuclear plant blacked out by the March earthquake and tsunami include: TEPCO Anticipates Cold Shutdown By End of Year Tokyo Electric Power Co. may declare that its three severely damaged reactors at the plant have reached cold shutdown status earlier than...

Regulators in Japan continue to refine their approach to a massive cleanup project following the March accident at the Fukushima Daiichi nuclear power plant. Meanwhile, the government reported it does not suspect radiation detected in Tokyo came from the plant. Developments at Fukushima over the last...

Recent days have seen the easing of evacuation orders and an IAEA mission dispatched to assist with remediation of the Fukushima Daiichi nuclear plant accident in Japan. Developments this week include: Evacuation Order Lifted in Some Areas On Sept. 30, the Japanese government lifted an evacuation advisory...

Tokyo Electric Power Co. announced some welcome news this week, as the temperature within the last of three damaged reactor vessels at the Fukushima Daiichi nuclear plant fell below boiling. Meanwhile, the Japanese government offered more details about the scope of contamination from the accident and...

(Please visit the site to view this video) Tokyo Electric Power Co. released this new video documenting recovery efforts at the Fukushima Daiichi nuclear plant on Tuesday. Developments this week at the power station severely damaged following Japan’s March 11 earthquake include: Typhoon’s...

Six months after the magnitude 9 earthquake and tsunami blacked out the Fukushima Daiichi nuclear plant, crews continue the painstaking task of cooling three damaged reactors, isolating four spent fuel tanks and treating tons of irradiated water that has accumulated in the plant's lower levels. In...

Tokyo Electric Power Co. announced it will build a barrier to prevent water leaks into the sea and Areva pitched its services in dealing with spent fuel this week at the Fukushima Daiichi nuclear plant damaged in Japan's earthquake and tsunami. Recent developments at Fukushima include: Areva Offers...

Tokyo Electric Power Co. continues to learn more about just what happened at its Fukushima Daiichi nuclear plant after Japan’s 9.0-magnitude earthquake and tsunami this March. Recent radiation measurements suggest hydrogen from a neighboring unit may be to blame for an explosion at unit 4. Meanwhile...

Tokyo Electric Power Co. is optimistic about a new cooling technique for a damaged reactor at Fukushima Daiichi, while outside the plant recent testing indicates many evacuated areas may be uninhabitable for years. Developments this week in the multiple-reactor accident triggered by March’s earthquake...

Water treatment remains the primary focus of plans to contain the multiple-reactor accident at Japan’s Fukushima Daiichi nuclear plant. Those efforts continue to have mixed results after crews built a hastily designed treatment system at the plant inundated by March’s tsunami, while radiation...

While efforts to cool spent fuel at Fukushima Daiichi have made progress in recent days, crews also discovered some of the highest radiation readings at the plant to date. Among the developments in the last week at the Tokyo Electric Power Co. reactors damaged by the March earthquake and tsunami: Water...

Water tests have detected another radioactive isotope at concentrations above levels considered safe in seawater adjacent the damaged Fukushima Daiichi nuclear plant in Japan. On Thursday, Tokyo Electric Power Co. reported tellurium-129m was detected for the first time near the plant. At 720 becquerels...

A city-park-sized barge towed to the damaged Fukushima Daiichi nuclear plant in Japan has been put into service for the first time to store water with low levels of radioactivity. Quoting Tokyo Electric Power Co. officials, Japan Today recently reported that crews have started to transfer 8,000 metric...

Crews have restarted a system to decontaminate and reuse water for core cooling at the damaged Fukushima Daiichi nuclear plant after another set of leaks forced it to shut down. After a testing period lengthened by the discovery of leaks and higher-than-expected radiation accumulation, Fukushima's...

Tokyo Electric Power Co. faces new accusations that it withheld critical information from regulators in the early hours of the Fukushima Daiichi crisis, including the likely presence of hydrogen that caused explosions in reactor buildings. A report from the country's Nuclear and Industrial Safety...

In what could be a major step forward at Japan's Fukushima Daiichi nuclear plant, Tokyo Electric Power Co. has started using treated water from plant basements for core cooling. For more than a week, engineers have struggled to overcome leaks and higher-than-expected radiation accumulation in a water...

A remote-controlled aircraft monitoring the damaged Fukushima Daiichi nuclear plant in Japan lost power today, making an emergency landing on top of a reactor building. Bloomberg quoted a Tokyo Electric Power Co. spokesman as saying the 18-pound drone engineered by Honeywell is on top of unit 2, but...

The limited success of a new water treatments system and Tuesday's start to the rainy season have prompted Tokyo Electric Power Co. to reduce the amount of water it is injecting into damaged reactors at the Fukushima Daiichi nuclear plant. TEPCO said it has reduced the amount of water injected into...

Drawing further scorn from Japanese regulators, Tokyo Electric Power Co. has said it cannot find a number of subcontractor employees who worked at the Fukuhsima Daiichi nuclear plant in the early days of the crisis. The utility recently checked the radiation exposure of nearly all of the 3,639 people...

Radiation readings at Japan's Fukushima Daiichi nuclear plant grounds were unchanged Monday after workers opened the doors to reactor unit 2. The doors were opened gradually between Sunday night and Monday morning, Japan time, to minimize airborne dust. Readings on plant grounds afterward did not...

Water filters expected to last a month accumulated excessive radiation levels after only five hours this weekend at Japan's severely damaged Fukushima Daiichi nuclear plant. After recovering from delays last week, Tokyo Electric Power Co. again suspended operation of the new water filtration system...

After setbacks earlier in the week, Tokyo Electric Power Co. plans to deploy a crucial water treatment system at the Fukushima Daiichi nuclear plant today. TEPCO completed testing the system to treat some 105,000 metric tons of irradiated water in plant basements Thursday, Japan Today reported. TEPCO...