International reactions to the Fukushima Daiichi nuclear disaster the IAEA in boosting nuclear safety, including its response mechanism". On 28 March 2011, at a special briefing on the Fukshima nuclear accidents held for IAEA Member States, IAEA Director General Yukiya Amano announced that a high-level "IAEA Conference on Nuclear Safety" should take place in Vienna. According to the International Atomic Energy Agency, Japan "underestimated the danger of tsunamis and failed to prepare adequate backup systems at the Fukushima Daiichi nuclear plant". This repeated a widely held criticism in Japan that "collusive ties between regulators and industry led to weak oversight and a failure to ensure adequate safety levels
Uses of radioactivity in oil and gas wells high energy gamma rays. The attenuation of these gamma rays gives an accurate measure of formation density; this has been a standard oilfield tool since 1965. Another source is americium berylium (Am-Be) neutron source used in evaluation of the porosity of the formation, and this has been used since 1950. In a drilling context, these sources are used by trained personnel, and radiation exposure of those personnel is monitored. Usage is covered by licenses from International Atomic Energy Agency (IAEA) guidelines, SU or European Union protocols, and the Environment Agency in the UK. Licenses are required for access, transport, and