Shikoku Electric restarts reactor under post-Fukushima regulations
Ikata nuclear power plant in Ehime Prefecture, is restarted.
After the Tepco Fukushima Daiichi earthquake/tsunami disaster and the Kumamoto recent earthquake, it is to be wondered what Japan has learned?
The Ikata nuclear power plant is located on the Hinagu fault zone and Futagawa fault zone, themselves extension of Japan’s largest active fault “Median Tectonic Line”.
In case of any accident, for the residents living on Sadamisaki Peninsula evacuation would be only possible by boat to Kyushu Island, such evacuation would be therefore difficult, even impossible.
Unless there would be a Japanese Moses to open the sea, such evacuation plan should be referred to as an escape from reality.
The Ikata Nuclear Power Plant in Ikata, Ehime Prefecture
MATSUYAMA, Japan (Kyodo) — Shikoku Electric Power Co. restarted a reactor at its Ikata power plant in western Japan on Friday, making it the fifth unit reactivated under tougher regulations set following the 2011 Fukushima nuclear disaster.
The No. 3 reactor at the plant in Ehime Prefecture is the only restarted unit in Japan that runs on uranium-plutonium mixed oxide, or MOX, fuel, as a court ordered Kansai Electric Power Co. in March to suspend two reactors at its Takahama plant after they resumed operations earlier this year, citing safety concerns.
MOX fuel, created from plutonium and uranium extracted from spent fuel, is a key component of the nuclear fuel recycle program pursued by the nuclear power industry and the government.
The government aims to bring reactors back online after the Fukushima crisis led to a nationwide halt of nuclear plants, as it plans to have nuclear power account for 20 to 22 percent of the country’s total electricity supply in 2030 to cut greenhouse emissions and lower imported fuel costs.
The Ikata unit is expected to reach criticality, or a state of sustained nuclear chain reaction, on Saturday and begin generating and transmitting electricity on Monday before resuming commercial operation in early September for the first time since it was halted in April 2011 for regular inspection.
“We will take steps toward criticality and resumption of power generation with priority on ensuring safety,” Shikoku Electric President Hayato Saeki said in a statement on Friday.
Meanwhile, around 70 residents and others opposing the reactor restart gathered around the seaside plant early Friday morning, chanting slogans such as “Don’t contaminate the Seto Inland Sea,” and “Stop the nuclear plant.”
Junko Saima, a 72-year-old woman from Yawatahama, adjacent to the town hosting the plant, which is located on one side of a narrow peninsula, said, “I am nervous that some kind of accident may occur.”
Opponents are concerned about the effectiveness of government-prepared evacuation plans in case of an accident and about potential major earthquakes that are not taken into account in the plans, while proponents are hailing the resumption as it could bring economic benefits.
The restart follows the reactivation of two reactors at Kyushu Electric Power Co.’s Sendai plant in Kagoshima Prefecture last year and the brief run of the Nos. 3 and 4 units at Kansai Electric’s Takahama complex in Fukui Prefecture.
The mayor of Ikata town and the governor of Ehime Prefecture have already given their consent to restart the No.3 reactor after regulators approved its restart in July last year.
In June, Shikoku Electric loaded nuclear fuel at the power plant eyeing to reboot it on July 26. However, reactivation was postponed due to problems with the reactor’s cooling system.
A group of local residents filed a suit in May seeking an injunction to halt the restart arguing that a series of earthquakes that have hit nearby Kyushu Island in April could trigger quakes along the median tectonic line running close to the Ikata reactor.
The plant is about 170 kilometers east of Kumamoto Prefecture, the epicenter of the quakes.
Meanwhile, in Kagoshima, new Gov. Satoshi Mitazono is planning to ask Kyushu Electric to suspend the two reactivated reactors at the Sendai plant to double-check any safety impact on the units from the powerful earthquakes that hit neighboring Kumamoto in April.
http://mainichi.jp/english/articles/20160812/p2g/00m/0dm/035000c
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