24 August 2012, inspectors with the International Atomic Energy Agency (IAEA) and Korea Institute of Nuclear Safety, are trying to figure out why an Areva (Framatome) designed nuclear reactor shut itself down, after a warning alarm sounded.

But it turns out this isn’t the first time this has happened.  On 19 August 2012, a brand new reactor, the Sinwolseong-1 (aka Reactor 1 at Shin Wolsong) shut itself down as well.

Sinwolseong-1 began operation in January 2012. Officials ruled the shut down as being caused by a failure of the input controls.

According to the IAEA, Sinwolseong-1 and Uljin-1 (aka Reactor 1 at Ulchin) are both pressurized water reactors (PWR) operated by Korea Hydro & Nuclear Power Company.

Uljin-1 was designed by a French company called Framatome, now called Areva.

Doosan Heavy Industries claims Sinwolseong-1 is a reactor based on Korea’s first indigenous pressurized light water nuclear reactor design.  They have even sold the same type of reactors to China.