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The radioactive decay of strontium-90 generates significant amount of heat (0.921 W/g) of the isotope or approximately 0.536 W/g of the compound. and is cheaper than the alternative 238Pu. It is used as a heat source in many Russian/Soviet radioisotope thermoelectric generators, usually in the form of strontium fluoride. It was also used in the US Sentinel series of RTGs in the form of strontium titanate.
A significant portion of the of the heat associated with spent nuclear reactor fuel results from the decay of Sr-90 and its decay daughter Y-90. Because of its relative abundance, moderately long half-life and heat output, Sr-90 was selected as fuel for terrestrial and marine applications of RTGs. The Energy Research and Development Administration (ERDA) and its predecessor, the Atomic Energy Commission (AEC) sponsored programs at the Pacific Northwest Laboratory (PNL), the Martin Company, and the Oak Ridge National Laboratory (ORNL) to develop 90 Sr-fueled isotopic heat sources.
Originally posted by Aircooled
Radiation level spiked from 57.1 μSv/h to 90 μSv/h within 3 months in an elementary school of Fukushima city
Waiting on a barge ride?
The ruling Liberal Democratic Party was the sole opponent of abolishing nuclear power in a policy debate involving the secretaries-general of nine major political parties Saturday.
While the representatives of the eight other parties backed ridding Japan of atomic energy generation, LDP Secretary-General Shigeru Ishiba said lawmakers should not mislead the public by calling for a zero-nuclear option. Ishiba said the LDP will aim to reduce the nation’s dependence on atomic energy but underscored his party’s plans to push for a restart of idled reactors once they are deemed safe.
“If we don’t (suggest) ways to reduce dependence on nuclear power, it is not responsible politics,” said Ishiba. “(Other parties) should not delude the public by using phrases like ‘zero nuclear power.’ “
But Ishiba found himself in a minority of one, as the secretaries-general of New Komeito, the LDP’s junior coalition partner, and opposition groups including the Democratic Party of Japan and Your Party voiced support for the elimination of all nuclear power plants.
Among other issues likely to dominate campaigning for the July 21 House of Councilors poll, the party representatives debated Prime Minister Shinzo Abe’s proposed constitutional revision and his government’s promotion of nuclear-related exports.
New York-based painter Al Baio noticed a stark change between her two visits to Japan, the first in 2010, and the second earlier this year. "You can feel it in the air. The first time I went, people would talk to me on the street or yell 'kawaii' at me." (Kawaii is the Japanese word for cute, which she was often labeled for her Japanese schoolgirl-inspired outfits.) "Now people are much more closed-off. They seem scared, and just want to go home and be with their families."
For this reason, TSJ argues for the importance of foreigners to continue to visit Japan, as activists or even tourists. "[The Japanese] feel like people have forgotten about them. After the tsunami, I saw so many people on Twitter saying, ''Pray for Japan,' but do they still care?" Baio wonders.
Jul 7, 11:51 PM EDT JAPAN MOVES CLOSER TO RESTARTING NUCLEAR REACTORS
TOKYO (AP) -- Japan moved a step closer to restarting nuclear reactors Monday as four utility companies applied for safety inspections of 10 idled plants, the clearest sign of a return to atomic energy nearly two and a half years after the Fukushima disaster.
With all but two of the country's 50 reactors offline since a tsunami swept through the Fukushima Dai-ichi plant in March 2011, Japan has been almost without nuclear energy that once supplied about a third of its power.
Four Japanese nuclear plant operators - supplying the regions of Hokkaido, Kansai, Shikoku and Kyushu - Monday filed applications for inspections by the Nuclear Regulation Authority for 10 reactors at five plants under new safety requirements that have just come into effect. Applications for two more reactors are expected later in the week.
Reactors that pass the stricter rules will possibly be allowed to restart early next year, with each inspection expected to take several months. Critics say the rules have loopholes, including grace periods for some safety equipment.
TOKYO (AP) — Masao Yoshida, the man who led the life-risking battle at Japan's crippled nuclear power plant when it was spiraling into meltdowns, died Tuesday of cancer of the esophagus. He was 58.
Tokyo Electric Power Co. spokesman Yoshimi Hitosugi said Yoshida died at a Tokyo hospital. TEPCO officials said his illness was not related to radiation exposure.