Links on what will happen if reactor No.4 SFP collapses are down below.
From the article:
“Tepco completed installing a temporary cover at the No. 1 reactor building to prevent the diffusion of radioactive substances by the end of October. The cover is designed to withstand winds of 25 meters per second (56 miles per hour), Matsumoto said.”
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- Fukushima Plant Faces Typhoon Summer With Added Tornado Threat (Bloomberg, June 22, 2012):
Tokyo Electric Power Co. (9501)’s crippled Fukushima nuclear plant faces its second typhoon season since the March 11 disaster last year, raising the risk of further radiation leaks if storms thrash exposed pools of uranium fuel rods or tanks holding contaminated water.
Typhoon Guchol hit Japan this week and moved up the main island of Honshu, prompting warnings of floods and landslides from the Japan Meteorological Agency. The Fukushima Dai-Ichi plant wasn’t damaged by the storm, which passed north of the crippled nuclear station, Tokyo Electric spokesman Taichi Okazaki said by telephone on June 21.
Typhoons rake through Japan’s islands most summers. The difference this year is Guchol arrived just a month after one of the most powerful tornadoes ever recorded in the nation hit Tsukuba, about 170 kilometers (106 miles) southwest of the Fukushima Dai-Ichi facility. The tornado, one of four to make landfall on May 6, ripped through an area 17 kilometers long and 500 meters wide, the weather agency said in a May 16 report.
The twisters killed a teenage boy, injured 50, wrecked nearly 300 houses and raised concern among scientists about tornado risk at the Fukushima plant, where explosions last year blew roofs off pools holding spent uranium fuel rods.
“Uranium spent fuel pools of No. 3 and No. 4 reactors are currently naked,” Kazuhiko Kudo, a research professor of nuclear engineering at Kyushu University, said on June 5. “A tornado with winds of 100 meters per second like the one that hit Tsukuba could suck up the pool water,” exposing the fuel rods. He raised the concern during a meeting assessing safety measures at the crippled plant in May, he said.
As dismantling and decommissioning the reactors will take decades, Tepco should review the plant’s safety measures against not only aftershocks and tsunamis but also tornadoes and huge typhoons, even if the possibility of extreme phenomena are very low, said Kudo, one of 12 members of the advisory panel to the Nuclear and Industrial Safety Agency, or NISA.
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Tags: Environment, Fukushima, Global News, Health, Japan, Nuclear, Obama administration, Radiation, Tornado, Typhoon