This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility:


reputable news agency


South Korea experts say Japan carefully answered questions on plan to release radioactive water

South Korea experts say Japan carefully answered questions on plan to release radioactive water
Yoo Guk-hee, Chairperson of South Korea's Nuclear Safety and Security Committee arrives at the foreign ministry in Tokyo, Japan, Monday, May 22, 2023. A South Korean team of government experts has begun a two-day tour at the tsunami-wrecked Fukushima nuclear power plant on Tuesday to have a first-hand look of a controversial Japanese plan to release into sea treated by slightly radioactive wastewater. Credit: Kyodo News via AP

The head of a South Korean team of experts said Wednesday they saw all of the facilities they had requested to visit at Japan's tsunami-wrecked Fukushima nuclear plant and Japanese officials had carefully answered their questions about a contentious plan to release treated but still slightly radioactive water into the sea, a sign of a further thawing of ties between the countries.

During their two-day visit, which was closed to the media, officials from the Japanese government and the plant operator, Tokyo Electric Power Company Holdings, showed the 21-member delegation facilities related to treatment, safety checks, transport and dilution of the waste .

The plan has faced fierce protests from local fishing communities concerned about safety and reputational damage. Neighboring countries, including South Korea, China and Pacific Island nations, have also raised safety concerns.

The water release has particularly been a sensitive issue between Tokyo and Seoul, which are now repairing long-strained ties to address bigger challenges such as security threats from China and North Korea.

"We saw every necessary facility that was included in the initial plan," said Yoo Guk-hee, the chairperson of South Korea's Nuclear Safety and Security Commission who heads the delegation. His government has studied the water release plan since August 2021 and submitted a list of facilities it wanted to see, he said.

The delegation also received data showing levels of radioactivity of the water before and after treatment which they still need to analyze and confirm, Yoo told reporters. He did not give his evaluation of the water release plan.

His team will hold talks with Japanese officials in Tokyo on Thursday before returning home Friday.

Japanese officials say the water will be treated to legally releasable levels and further diluted with large amounts of seawater. It will be gradually released into the ocean over decades through an undersea tunnel, making it harmless to people and marine life, they say.

Some scientists say the impact of long-term, low-dose exposures to radionuclides is unknown and the release should be delayed.

Historical disputes have strained ties between Tokyo and Seoul but their relationship has thawed rapidly in recent months as the two U.S. allies, under Washington's pressure, share a sense of urgency to mend ties amid growing regional .

A massive March 11, 2011, earthquake and tsunami destroyed the Fukushima Daiichi 's cooling systems, causing three reactors to melt, releasing large amounts of radiation. Water used to cool the reactor cores accumulated in about 1,000 tanks at the plant which will reach their capacity in early 2024.

Japanese officials say the water stored in the tanks needs to be removed to prevent accidental leaks in case of another disaster and to make room for the plant's decommissioning.

© 2023 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed without permission.

Citation: South Korea experts say Japan carefully answered questions on plan to release radioactive water (2023, May 24) retrieved 23 May 2024 from
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.

Explore further

South Korean experts visit Fukushima nuclear plant before release of treated water into sea


Feedback to editors