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Agencies

Two earthquakes that jolted South Korea on Monday night, including the largest ever recorded in the country, prompted concerns about the safety of nuclear plants clustered in the quake-prone southeast.
Korea’s Meteorological Agency said the two earthquakes, of magnitude of 5.1 and 5.8, occurred near the city of Gyeongju. They could be felt in the capital Seoul, over 300 km to the northwest.
South Korea’s lively social media was flooded with images of shattered storefront windows and people fleeing apartments in panic, some with children in their arms.
Some spent the night in shelters or in their cars.


Kakaotalk, the country’s largest mobile app, which is used by 40 million people, partially went down, the company said, as users rushed to exchange messages in the aftermath of the quake.
Television footage showed bottles falling from shelves at a store, and long cracks that had developed in a basement parking lot.
Fourteen people were injured but there were no reports of serious damage, a Ministry of Public Safety and Security official said.

Nonetheless, Korea Hydro & Nuclear Power Co shut down four nuclear reactors at the Wolsong complex in Gyeongju as a precaution.
South Korea’s reactors are designed to withstand a magnitude 6.5 or 7.0 earthquake, according to the Nuclear Safety and Security Commission.
Can the Moon spawn big earthquakes?
Korean seismologists, who put the magnitude of the second quake at 5.8, said it was the most powerful to hit since records began in 1978.
Orders were given to nuclear operators to upgrade old reactors to that standard after the disaster at Japan’s tsunami-crippled Fukushima Daiichi nuclear power plant in 2011.

“That will be completed by next year,” said Shim Eun-jung, a spokeswoman at the nuclear watchdog.
South Korea’s 25 reactors supply about one-third of its electricity and make it the world’s fifth-largest user of nuclear power. It plans to add 9 more nuclear plants by 2027, according to the nuclear watchdog.
Scientists map cities at risk of quakes
As in many countries, nuclear power is controversial in South Korea, especially after a 2012 scandal over parts being supplied with fake certificates prompted shutdowns.
Park Jong-kwon, head of an anti-nuclear civic group in South Gyeongsang Province, said no more nuclear reactors should be built in southeastern cities like Ulsan and Gyeongju as they are close to an active fault line.
“Even though nuclear reactors are designed to withstand an earthquake of a magnitude 7.0, if they are hit by 4.5 and 5.8 magnitude earthquakes several times, they can be knocked down by a real 7.0 magnitude earthquake at a single blow,” Park said.

About 70 per cent of South Korea’s nuclear reactors are in the southeast, partly to locate them further away from North Korea, with which the country remains technically at war.
Greenpeace Korea filed a lawsuit against the nuclear watchdog on Monday, before the earthquakes, urging it to scrap a plan to add two more reactors in Ulsan.
Pacific Ocean radiation back near normal five years after Fukushima disaster, study finds
Koreans living near the nuclear power plant in Gyeongju city also voiced anxiety.
“When I heard the news, the first thing that came to my mind was that a Fukushima-like accident could happen,” Byun Woo-hee, a 59-year-old professor, said.
Reuters and Agence France-Presse


South Korea’s biggest earthquake triggers nuclear safety concerns

The Wolsong Nuclear Power plant's reactors in Gyeongju city, South Korea. Activity at the facility was temporarily paused for a safety check after overnight earthquakes. Photo: EPA

epa05537286 A car is covered with tiles that fell from the roof of a house in the city of Ulsan after a 5.8-magnitude earthquake hit the historic city of Gyeongju, some 370 km southeast of Seoul; in South Korea, 13 September 2016. The 5.8 magnitude earthquake was preceeded by a foreshock of 5.1-magnitude, both on 12 September. The earthquakes were felt all across the country but caused no serious injuries or damage. The 5.8-magnitude quake was the largest ever recorded in South Korea. EPA/YONHAP SOUTH KOREA OUT

(160912) -- GYEONGJU, Sept. 12, 2016 (Xinhua) -- Goods are scattered on the ground after the earthquake in Gyeongju, South Korea, on Sept. 12, 2016. A 5.8-magnitude earthquake jolted southeastern South Korea on Monday, the biggest-ever quake striking the country, injuring at least two people and making people feel the tremor nationwide, Seoul's weather agency said. 
 (Xinhua/Newsis) (wtc)

A man inspects partially damaged roof of his house in Gyeongju on Sepber 13, 2016 after a powerful quake hit the southern part of South Korea. South Korea was clearing up on September 13 after being struck by its most powerful earthquake since records began. The 5.4 magnitude quake on late september 12 sent people scurrying from buildings, unused to the kind of seismic events that regularly shake neighbouring Japan. / AFP PHOTO / YONHAP / YONHAP

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