A miniature showing the planned construction of a shelter around disaster-hit Fukushima No. 1 Nuclear Power Plant's No. 1 nuclear reactor building. (Photo courtesy of Tokyo Electric Power Co.)TOKYO —
A combination of Japanese traditional post-and-beam construction methods and cutting-edge dome stadium technologies will be used in building giant covers for three damaged reactor buildings at the Fukushima Daiichi nuclear power complex, Kyodo News learned Monday.
Major general contractors Kajima Corp, Shimizu Corp and Takenaka Corp will begin work as early as Tuesday, with an eye to completing the first cover around the fall at the plant crippled by the March 11 earthquake and tsunami, industry sources said.
The construction orders for blanketing the Nos. 1, 3 and 4 reactor buildings to prevent further scattering of leaked radioactive substances are estimated at 15 billion to 20 billion yen each, according to the sources.
Construction work will start from the No. 1 reactor, with the cover measuring 54 meters high, 42 meters wide and 47 meters long. The covers are designed to be quake- and wind-resistant.
The traditional method used in building ancient temples and castles, with precut beams and pillars all locked in place like giant puzzles without the need for nails and metal fittings, would shorten on-site operation times—a crucial condition due to high radiation levels in the area.
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http://www.japantoday.com/category/national/view/covers-for-fukushima-reactors-to-use-dome-stadium-technologiesCovers for Fukushima reactors to combine building skillsTOKYO (Kyodo) -- A combination of Japanese traditional post-and-beam construction methods and cutting-edge dome stadium technologies will be used in building giant covers for three damaged reactor buildings at the Fukushima Daiichi nuclear power complex, Kyodo News learned Monday.
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http://mdn.mainichi.jp/mdnnews/national/news/20110627p2g00m0dm051000c.html