The shutdown will put an “unprecedented” strain on power supply, authorities sayThe two reactors are halted because they are using unverified partsThe government says there is no risk of a radiation leak from the parts in questionNuclear power is under increased scrutiny worldwide after the Japanese crisisSeoul, South Korea — South Korea said Monday that it had shut down operations at two nuclear reactors after discovering that they were using parts supplied with forged quality certificates.Halting the reactors to replace the parts will result in “an unprecedented level” of strain on the nation’s power supply as it heads into the [...]