.jpg "Fukushima Daiichi 2 turbine building (Tepco)")
While progress has been made in cooling the used fuel pool at Fukushima Daiichi unit 2, an inspection of the reactor building at unit 4 suggests workers may face problems setting up a similar cooling system there. Meanwhile, tests have confirmed that two workers have received radiation doses of over 650 millisieverts.
Work to assemble the giant arched structure that will protect the ruined Chernobyl unit 4 and enable its dismantling has officially begun on the 26th anniversary of the accident.
.jpg "Sylvain Costes (Berkeley)")
Results from America's Berkeley National Laboratory have cast doubt on the assumption that risk from radiation is always proportional to exposure – a theory that underpins most measures for radiological protection.
An area of extremely high radiation has been found at Fukushima Daiichi in a filtration system that helped to reduce emissions from the reactor accident. Meanwhile, new water treatment equipment is starting trial operation.
Remote-controlled robots are being used to assess the conditions inside the damaged reactor buildings of units 1, 2 and 3 at the Fukushima Daiichi nuclear power plant.
The ongoing radiological release from the Fukushima Daiichi nuclear power plant has led Japanese authorities to raise the rating of the accident there to Level 7.