15 years after Fukushima, Japan prepares to restart the world’s biggest nuclear plant | Japan

The activity around the Kashiwazaki-Kariwa nuclear power plant is reaching its peak: workers remove earth to expand the width of a main road, while lorries arrive at its heavily guarded entrance. A long perimeter fence is lined with countless coils of razor wire, and in a layby, a police patrol car monitors visitors to the beach – one of the few locations with a clear view of the reactors, framed by a snowy Mount Yoneyama.

When all seven of its reactors are working, Kashiwazaki-Kariwa generates 8.2 gigawatts of electricity, enough to power millions of households. Occupying 4.2 sq km of land in Niigata prefecture on the Japan Sea coast, it is the biggest nuclear power plant in the world.

Since 2012, however, the plant has not generated a single watt of electricity, after being shut down, along with dozens of other reactors, in the wake of the March 2011 triple meltdown at Fukushima Daiichi, the world’s worst nuclear accident since Chornobyl.

Located about 220km (136 miles) north-west of Tokyo, the Kashiwazaki-Kariwa plant is run by Tokyo Electric Power (Tepco), the same utility in charge of the Fukushima facility when a powerful tsunami crashed through its defences, triggering a power outage that sent three of its reactors into meltdown and forcing 160,000 people to evacuate.

Weeks before the 15th anniversary of the accident, and the wider tsunami disaster that killed an estimated 20,000 people along Japan’s north-east coast, Tepco is set to defy local public opinion and restart one of Kashiwazaki-Kariwa’s seven reactors, possibly as soon as Tuesday.

Restarting reactor No 6, which could boost the electricity supply to the Tokyo area by about 2%, will be a milestone in Japan’s slow return to nuclear energy, a strategy its government says will help the country reach its emissions targets and strengthen its energy security.

But for many of the 420,000 people living within a 30km (19-mile) radius of Kashiwazaki-Kariwa who would have to evacuate in the event of a Fukushima-style incident, Tepco’s imminent return to nuclear power generation is fraught with danger.

They include Ryusuke Yoshida, whose home is less than a mile and a half from the plant in the sleepy village of Kariwa. Asked what worries him most about the restart, the 76-year-old has a simple answer. “Everything,” he says, as waves crash on to the shore, the reactors looming in the background.

“The evacuation plans are obviously ineffective,” adds Yoshida, a potter and member of an association of people living closest to the facility. “When it snows in winter the roads are blocked, and a lot of people who live here are old. What about them, and other people who can’t move freely? This is a human rights issue.”

Location map

The utility company says it has learned the lessons of the Fukushima Daiichi accident, and earlier this year pledged to invest 100 bn yen (£470m) into Niigata prefecture over the next 10 years in an attempt to win over residents.

The Kashiwazaki-Kariwa plant, whose 6,000 staff have remained on duty throughout the long shutdown, has seawalls and watertight doors to provide stronger protection against a tsunami, while mobile diesel-powered generators and a large fleet of fire engines are ready to provide water to cool reactors in an emergency. Upgraded filtering systems have been installed to control the spread of radioactive materials.

“The core of the nuclear power business is ensuring safety above all else, and the understanding of local residents is a prerequisite,” says Tatsuya Matoba, a Tepco spokesperson.

That is the one hurdle residents say Tepco has failed to overcome after local authorities ignored calls for a prefectural referendum to determine the plant’s future. In the absence of a vote, anti-restart campaigners point to surveys showing clear opposition to putting the reactor back online.

They include a prefectural government poll conducted late last year in which more than 60% of people living within 30km of the plant said they did not believe the conditions for restarting the facility had been met.

“We take the results of the prefectural opinion survey very seriously,” Matoba adds. “Gaining understanding and trust from local residents is an ongoing process with no end point, that requires sincerity and continuous effort.”

Kazuyuki Takemoto, a member of the Kariwa village council, says seismic activity in this region of north-west Japan means it is impossible to guarantee the plant’s safety.

“But there has been no proper discussion of that,” says Takemoto, 76. “They say that safety improvements have been made since the Fukushima disaster, but I don’t think there is any valid reason to restart the reactor. It’s beyond my comprehension.”

‘The priority should be to protect people’s lives’

Just weeks before the planned restart, the nuclear industry attracted fresh criticism after it emerged that Chubu Electric Power, a utility in central Japan, had fabricated seismic risk data during a regulatory review, conducted before a possible restart, of two reactors at its idle Hamaoka plant.

“When you look at what’s happened with Hamaoka, do you seriously think it’s possible to trust Japan’s nuclear industry?” Takemoto says. “It used to be said that nuclear power was necessary, safe and cheap … We now know that was an illusion.”

Adding to local concerns are the presence of seismic faults in and around the site, which sustained damage during a 6.8-magnitude offshore earthquake in July 2007, including a fire that broke out in a transformer. Three reactors that were in operation at the time shut down automatically.

The Kashiwazaki-Kariwa restart is a gamble for Japan’s government, which has put an ambitious return to nuclear power generation at the centre of its new energy policy as it struggles to reach its emissions targets and bolster its energy security.

Before the Fukushima disaster, 54 reactors were in operation, supplying about 30% of the country’s power. Now, of 33 operable reactors, just 14 are in service, while attempts to restart others have faced strong local opposition.

Now, 15 years after the Fukushima meltdown, criticism of the country’s “nuclear village” of operators, regulators and politicians has shifted to this snowy coastal town.

Pointing out one of the many security cameras near the plant, Yoshida says the restart has been forced on residents by the nuclear industry and its political allies. “The local authorities have folded in the face of immense pressure from the central government,” he says.

“The priority of any government should be to protect people’s lives, but we feel like we have been deceived. Japan’s nuclear village is alive and well. You only have to look at what’s happening here to know that.”