The possible detection of xenon at Fukushima Daiichi 2 has led to questions over ongoing fission, but detection is uncertain and a translation error may have exacerbated anxiety.

Electricity of Vietnam has signed an agreement with a consortium of Japanese companies to progress the design, construction and operation of the country's second proposed nuclear power plant. Meanwhile, Rosatom will help establish a nuclear energy information centre in Hanoi.

The effort to decontaminate the area around Fukushima Daiichi is gathering pace with the goal of enabling the return of residents evacuated some six months ago.

The operation of a core spray has helped to bring the temperature of Fukushima Daiichi 3 below 100ºC - the benchmark for cold shutdown.

The costs of generating electricity using nuclear power plants in Japan, even taking into account the compensation costs related to the Fukushima Daiichi accident, still remain likely to be less than using fossil fuels, according to a new study.

The temperature of the reactor core of unit 3 of the damaged Fukushima Daiichi plant is expected to drop significantly with the commissioning of a more efficient cooling system, according to Tokyo Electric Power Company (Tepco).

Some stabilisation targets have been met at the Fukushima Daiichi nuclear power plant, but levels of contaminated water in the basements remain Tepco's biggest challenge.

Japanese authorities are to start detailed studies which could lead to a re-assessment of the evacuation measures in Fukushima prefecture.

The temperature of the water in the used fuel pool of unit 4 at the damaged Fukushima Daiichi plant has dropped significantly with the start-up of an alternative cooling system. Meanwhile construction of a supporting structure beneath the pool has been completed.

While a centralized radioactive water treatment facility starts to make headway in cleaning up highly contaminated water, work to install defences to prevent the contamination of the sea has been completed at the Fukushima Daiichi nuclear power plant.

Tepco plans to complete the construction of a cover over the stricken Fukushima Daiichi unit 1 by the end of September, according to a progress report submitted to the Japanese nuclear safety agency. Meanwhile, recent analysis suggests most of the fuel in the unit's storage pool is undamaged.