An operational event at Ling Ao Nuclear Power Station on March 31 did not affect the plant's safe operation, the Security Bureau said today.
The case, reported on the Daya Bay Nuclear Power Operations & Management Company's website, involved a relay in the backup diesel generator of the station's Unit 1.
During a regular test, station staff found a dysfunctional relay and immediately replaced it according to the procedures. Its function has returned to normal after replacement.
Relevant statistics suggested that the dysfunction time of the relay had exceeded the operational and technical requirements.
The bureau said the event was classified as a Level 0 deviation in accordance with the International Nuclear & Radiological Event Scale and relevant nuclear safety regulations, adding that it did not affect the unit's safe operation, workers' health, nearby public or the environment.
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