Falsified inspections suspected at Monju fast-breeder reactor

Apr 11, 2014

Falsified inspections suspected at Monju fast-breeder reactor

The operator of the Monju prototype fast-breeder reactor in Fukui Prefecture is suspected of falsifying an inspection report after regulators later found new pieces of equipment there that hadn’t been inspected, Nuclear Regulation Authority sources said Thursday. The experimental reactor in Tsuruga is run ...

Mar 24, 2014

Japan to return weapons-grade plutonium to U.S.

Japan will return to the United States more than 700 pounds (315 kg) of weapons grade plutonium and a supply of highly enriched uranium, a victory for President Barack Obama’s efforts to secure nuclear materials around the world. American and Japanese officials announced the ...

Feb 26, 2014

Japan to return weapons-grade plutonium U.S. provided during Cold War

Japan plans to return, at the request of Washington, plutonium provided by the United States for research purposes during the Cold War, government sources said Tuesday. The government wants to be seen contributing to nuclear nonproliferation, the sources said. The Obama administration asked for ...

Feb 25, 2014

Time to shutter Monju

The long-stalled project to commercialize fast-breeder reactor technology has been kept alive by the Abe administration in its plan for the nation's new basic energy policy.

Jan 27, 2014

Return arms-grade plutonium: U.S.

Washington is pressuring a reluctant Tokyo to return over 300 kg of mostly weapons-grade plutonium it let Japan experiment with during the Cold War.

Oct 31, 2013

Hiroshima, Nagasaki mayors slam Obama over nuclear test

The mayors of the only two cities to experience atomic bombings sent protest letters to U.S. President Barack Obama on Wednesday after the United States revealed it conducted an experiment using a small amount of plutonium to examine the capabilities of its nuclear weapons ...

Spent fuel good enough for bomb, U.S. told Japan in 1977

Oct 30, 2013

Spent fuel good enough for bomb, U.S. told Japan in 1977

The United States believed in 1977 that nuclear weapons could be produced from plutonium extracted from spent nuclear fuel at Japan’s light water reactors and conveyed its view to Tokyo, according to Japanese diplomatic records declassified Wednesday. A U.S. arms control official told a ...