April 20, 2011 09:48
The aging Gori Nuclear Power Plant in Busan is experiencing a spate of difficulties. Following a recent power circuit problem at the No. 1 reactor, power supply for the No. 4 reactor was interrupted on Tuesday due to eccentric wiring.
A spokesman for the Gori nuclear power division of Korea Hydro & Nuclear Power said, "At 1:43 p.m. Tuesday, power supply was cut for some facilities of... the plant's No. 4 reactor. An emergency diesel generator was set in motion immediately, so it posed no problem to safety." Around 3:15 p.m. outside power supply resumed normally.
The spokesman added, "An engineer touched an earthed high-voltage cable by mistake while checking electrical circuits within the No. 3 reactor. As a result, the circuit breaker switched off, cutting power supply to some facilities of No. 4 reactor as well as the No. 3 reactor."
For some reason the No. 3 and 4 reactors are built to receive power supply through a single cable, so if a problem occurs with one, power supply to the other is automatically cut. All other nuclear reactors in the country receive power through their separate cables.
Experts said the problem could have been prevented if the electrical circuit had been properly designed.
"Safety is of the utmost importance for nuclear power plants," an expert said. "The fact that Gori's No. 3 and 4 reactors share a single cable for power supply is a typical example of ignorance of safety risks."
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