nuclear-news

The News That Matters about the Nuclear Industry Fukushima Chernobyl Mayak Three Mile Island Atomic Testing Radiation Isotope

Fukushima nuclear power plant plans seabed tunnel to discharge treated radioactive water into ocean

22 déc. 2021

The operator of Japan’s crippled Fukushima Daiichi nuclear power plant has unveiled plans to build an underwater tunnel to release treated radioactive water into the sea. The Tokyo Electric Power (Tepco) submitted detailed plans on December 21, 2021, to the nuclear regulation authority for approval. In 2011, a devastating earthquake and tsunami sparked a nuclear disaster on Japan’s northeastern coast. Nearly 1.3 million tonnes of contaminated water has to be processed to eliminate radioactive contamination, except for tritium, which cannot be removed. Japan’s plans to dump the treated water in the ocean have raised concerns among neighbouring China and South Korea, as well as farmers and fisherfolk.

December 23, 2021 Posted by | Fukushima 2021 | , , , , | Leave a comment

Wrecked Fukushima Nuclear Plant One Step Closer to Releasing Radioactive Water Into Pacific

A protestor holds a slogan during a rally against the Japanese government’s decision to release treated water from the stricken Fukushima Daiichi nuclear plant into the sea, outside of the prime minister’s office in Tokyo on April 13, 2021.

December 21, 2021

The operator of the damaged Fukushima nuclear plant is one step closer to releasing treated radioactive water into the Pacific ocean after applying for approval Tuesday to create a tunnel to the Pacific ocean to dispose of the water safely.

The nuclear power plant was severely damaged in 2011 after a massive earthquake triggered a tsunami that caused contamination of their cooling water, which then began leaking. The 1,000 tanks storing the contaminated water will reach capacity next year, the plant’s operator, Tokyo Electric Power Company Holdings (TEPCO), said.

TEPCO plans to create the sea tunnel so they can release a massive amount of treated radioactive water into the ocean. The Nuclear Regulation Authority needs to approve the plan, including the tunnel’s design, equipment needed to dilute the water and other materials.

The contaminated water will be treated with seawater to reduce the levels of radioactive material to reach a safe level that won’t harm the environment. The water will be released about half a mile from the plant and about 40 feet below the ocean’s surface, according to TEPCO’s plan.

TEPCO wants to start construction in June so they can begin to release the radioactive water by April 2023.

The contaminated water is to be diluted to reduce the concentration of radioactive materials below allowable limits.

About 1,000 storage tanks filled with the radioactive water need to be removed to make room for facilities necessary for the plant’s decommissioning, TEPCO says.

Increasing amounts of radioactive water have been stored at the plant. The plant says the storage tanks currently hold about 1.29 million tons of water and will reach their capacity of 1.37 million tons by early 2023.

An official in charge of the water discharge project, Junichi Matsumoto, said TEPCO will construct the undersea tunnel by drilling through bedrock in the seabed.

The government in April approved the decision to start discharging the water into the Pacific Ocean under safety standards set by regulators, calling it the most realistic option. The idea has been fiercely opposed by fishermen, residents and neighboring countries including China and South Korea.

https://www.newsweek.com/wrecked-fukushima-nuclear-plant-one-step-closer-releasing-radioactive-water-pacific-1661836

December 23, 2021 Posted by | Fukushima 2021 | , , , | Leave a comment

Japan Cleared to Re-Start World’s Largest Nuclear Plant

KONICA MINOLTA DIGITAL CAMERA

 

TEPCO, which responded so badly to the Fukushima Dai-Ichi nuclear disaster, has won approval from Japan’s nuclear reactor to crank back up the world’s biggest nuclear power plant.

The word “nuclear” has a lot more power in Japan than it does elsewhere. 

Tokyo Electric Power, or TEPCO (TKECY) as it is better known, has just won approval to re-start two reactors at the world’s largest nuclear power plant. Its shares got a jolt of 3% at that announcement.

Nuclear-linked stocks will be worth watching as the company pushes on with that attempt. TEPCO is, after all, the company that responded so badly to the disaster at the Fukushima Dai-Ichi power plant in 2011.

The only country to have been hit by an atom bomb nevertheless embraced the technology behind nuclear power. Around one-fifth of all electricity is intended to be produced that way.

Then came the disaster at Fukushima. The March 2011 earthquake unleashed a tidal wave that ultimately killed 15,894 people, causing ¥21.5 trillion ($191 billion) in damage. Only the nuclear disaster at Chernobyl in Ukraine was worse.

The tsunami deluged the nuclear reactors at Fukushima, and three of them melted down. That shined a spotlight on the inept operations and response of TEPCO, which ran the plant.

The company was terrible at responding to the disaster and even worse at responding to the public. Its executives went into shutdown mode, as Asian companies are wont to do. It denied facts that turned out to be true, downplayed the impact and generally pretended that there’s nothing to see here, we’ve got it all under control, please move along.

So it’s amazing that it’s back in big-time nuclear business. Most recently, Japan’s nuclear regulator, the Nuclear Regulation Authority, has granted TEPCO initial safety approval to restart two reactors, six and seven, at the Kashiwazaki-Kariwa nuclear plant, the world’s largest.

The five NRA commissioners voted unanimously for permission to crank the reactors back up. Formal approval will likely go ahead after a 30-day period for public comment.

397px-Kashiwazaki_Kariwa_Fault_Lines.PNG

 

The governor of Niigata prefecture, where that plant is based, says he won’t consider allowing the plant to run again until the prefecture conducts its own review of what went on at Fukushima, and that won’t happen until 2020 at the earliest.

Opinion polls show that a majority of the Japanese public now opposes nuclear power and would ultimately like Japan to cease producing it. It’s likely that nuclear power will come up as an issue in the Japanese election, slated for Oct. 22. 

Japanese Prime Minister Shinzo Abe believes nuclear power is a viable and stable source of energy. His Liberal Democratic Party wants to see more of Japan’s nuclear reactors put back to work.

Tokyo Governor Yuriko Koike, a former defense minister in the Abe government, has formed a conservative party to rival Abe’s conservative government. Although she says she won’t run for prime minister, her Kibo no To, or Party of Hope, will contest many of the seats up for grabs.

The party is considering an anti-nuclear stance. “We’ll examine how to bring down the reliance to zero by 2030,” Koike told a news conference, according to the Japan Times.

Nuclear power is intended to produce around 22% of Japan’s electricity if all its plants are operating. Government plans call for another 27% to come from liquefied natural gas, around 23% from renewable sources, and only 26% from coal.

All 42 of Japan’s nuclear reactors were ordered to shut down in 2011.

Kyushu Electric Power (KYSEY) was the first company to fire back up a nuclear plant after the 2011 quake, on the island of the same name in the city of Sendai. That’s part of Japan’s industrial heartland.

Kansai Electric Power (KAEPY) was last week granted permission from the mayor of Ohi, in Fukui Prefecture, to re-start two reactors there. The company had applied in August for permission to do so, from Japan’s nuclear regulator, the Nuclear Regulation Authority. 

Meanwhile, TEPCO continues the cleanup of the mess at Fukushima. It has delayed the removal of used nuclear rods from fuel pools at the plant. It shifted fuel removal from 2017 to 2018 at the safest of the reactors, and from 2020 to 2023 for another two.

It also has to mop up about 770,000 tons of contaminated water that was pumped into the plant to cool the melted fuel reactors. That’s due to be cleaned out of around 580 tanks where it is stored on site by 2020 – the same year that Tokyo will host the Olympics.

https://www.thestreet.com/story/14332182/1/japan-set-to-restart-worlds-largest-nuclear-plant.html

kashiwazaki-kriwa npp location

October 10, 2017 Posted by | Japan | , , , , | Leave a comment