Tokyo, Apr 24 (EFE).- The troubled Fukushima Daiichi nuclear power plant in northeastern Japan suffered a power outage on Wednesday that led authorities to stop the discharge of treated radioactive wastewater into the Pacific Ocean.

The incident, which occurred at 10:43 am, caused the plant to suspend its water treatment unit, the plant's operator, Tokyo Electric Power Company (TEPCO), said in a statement.

There has been "no significant change" in the radioactivity levels in the plant, the company said, adding that they trying to ascertain the cause of the outage and its impact.

A worker involved in the excavation work outside the plant was injured and taken to the hospital, TEPCO said.

The worker is conscious and is not contaminated, the company said, adding that they were investigating if the two incidents were related.

The outage coincides with the visit of a delegation of the International Atomic Energy Agency (IAEA) led by its director of safety and security coordination, Gustavo Caruso, which was scheduled to inspect the site on Wednesday.

The IAEA delegates are examining the purification and discharge of radioactive wastewater, accumulated at the plant site.

The Fukushima plant, damaged by the 2011 earthquake and tsunami, began releasing large amounts of treated water into the Pacific Ocean in August last year.

The water undergoes a complex filtering process that removes harmful radioactive substances before discharge.

Currently, there are more than 1,000 tanks of treated water on the plant's grounds, and the discharge process could take at least 30 years to complete. EFE

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