Adding context to Japan’s (correct) decision to dispose of Fukushima wastewater

April 13, 2021, 6:28AMNuclear News
A current picture of the Fukushima nuclear power station with the more than 1,000 water storage tanks on site. Photo: Courtesy of TEPCO.

The Japanese government will soon announce the decision to dispose of stockpiled Fukushima wastewater into the Pacific Ocean, according to an AP News story published last Friday. The decision is years in the making and follows the guidelines from a panel of government-appointed experts named the Subcommittee on Handling of the ALPS-Treated Water (ALPS Subcommittee).

Advanced liquid waste processing systems: Safely processing Fukushima’s wastewater

March 19, 2021, 2:07PMNuclear NewsJohn Fabian

The Tokyo Electric Power Company (TEPCO) became a household name a decade ago as the operator of the Fukushima Daiichi nuclear power plant, center of the largest nuclear accident in a generation. Now in 2021, as a result of the continuous mitigation efforts, TEPCO is currently storing 1.2 million cubic meters of treated wastewater—and counting—in more than 1,000 large storage tanks on site. This wastewater has been in the spotlight for the past few years since current projections show that storage capacity will run out by 2022. That spotlight intensified last year when a panel of experts from Japan named the Subcommittee on Handling of the ALPS-Treated Water (ALPS Subcommittee) recommended to the Japanese government that the treated wastewater should be released into the ocean. The ALPS Subcommittee’s report states, “The topic of how to handle the treated water is one of the most important decommissioning tasks, which has been discussed since 2013.” This issue has plagued the decommissioning and decontamination efforts for the past decade for one simple reason: a failure to effectively communicate about the low risk involved with processing, diluting, and discharging the water over a period of several years.

Critical Look: PBS Newshour’s coverage of 10th anniversary of the Fukushima nuclear accident

March 15, 2021, 3:00PMNuclear News

Along with many other media outlets on March 11, the PBS NewsHour reported on the continuing recovery efforts from the earthquake and tsunami that devastated northeastern Japan 10 years ago. The segment, "Japan marks 10th anniversary of Fukushima nuclear disaster," is just over eight minutes long, most of which discusses the effects of the earthquake and tsunami on the region and Japan’s preparedness for the next major natural incident.

Safely decommissioning Fukushima Daiichi and revitalizing Fukushima

March 11, 2021, 12:00PMNuclear NewsAkira Ono

Akira Ono is chief decommissioning officer of Tokyo Electric Power Company Holdings and president of the Fukushima Daiichi Decontamination and Decommissioning Engineering Company.

The mission of Tokyo Electric Power Company Holdings (TEPCO), and my personal mission, is to safely decommission the damaged Fukushima Daiichi nuclear power station and thereby contribute to the revitalization of Fukushima.

In performing this important work, we are guided by the principle of balancing the recovery of Fukushima with the decommissioning of the Fukushima Daiichi nuclear power station, doing everything possible to mitigate the risks as we progress. Since the accident on March 11, 2011, we have stabilized the site and alleviated many of its crisis aspects.

Most significantly, we have been making efforts to improve the working environment by reducing the contamination on the site due to the accident. About 4,000 workers are currently engaged at Fukushima Daiichi. The average monthly radiation dose for those workers has been reduced from 21.55 mSv (2,155 mrem) immediately following the accident to 0.3 mSv (30 mrem).

ANS webinar updates progress at Fukushima

March 3, 2021, 9:25AMNuclear News

The accident at Japan's Fukushima Daiichi nuclear power plant on March 11, 2011, has sparked many safety improvements in the nuclear industry over the past decade. Lessons from the accident and its aftermath will influence firms and regulators as they consider the future design, construction, operation and decommissioning of nuclear reactors.

An American Nuclear Society webinar, “Nuclear News Presents: A Look Back at the Fukushima Daiichi Accident,” held yesterday was attended by more than 1,550 viewers and generated about 150 questions to the panelists. The attendance was the largest ever for an ANS webinar.

The panelists were Mike Corradini, emeritus professor, University of Wisconsin; Dale Klein, former chairman of the U.S. Nuclear Regulatory Commission; Joy Rempe, principal, Rempe and Assoc. LLC; Lake Barrett, senior advisor, Tokyo Electric Power Company and Japan’s International Research Institute for Nuclear Decommissioning (IRID); and Paul Dickman, senior policy fellow, Argonne National Laboratory.

The webinar’s recording and slides are available here, along with an e-version of the March issue of Nuclear News, which features a cover story on the Fukushima Daiichi accident.

Fukushima Daiichi: 10 years on

March 1, 2021, 2:12PMNuclear NewsLake Barrett

The Fukushima Daiichi site before the accident. All images are provided courtesy of TEPCO unless noted otherwise.

It was a rather normal day back on March 11, 2011, at the Fukushima Daiichi nuclear plant before 2:45 p.m. That was the time when the Great Tohoku Earthquake struck, followed by a massive tsunami that caused three reactor meltdowns and forever changed the nuclear power industry in Japan and worldwide. Now, 10 years later, much has been learned and done to improve nuclear safety, and despite many challenges, significant progress is being made to decontaminate and defuel the extensively damaged Fukushima Daiichi reactor site. This is a summary of what happened, progress to date, current situation, and the outlook for the future there.

Earthquake has impact on Fukushima Daiichi plant

February 23, 2021, 6:58AMNuclear News

The black star represents the epicenter of the February 13 earthquake. Image: USGS

There has been no off-site impact from the February 13 earthquake that struck off the east coast of Japan near the Fukushima Daiichi nuclear power plant, Tokyo Electric Power Company (TEPCO) reported on February 19. The earthquake, however, has caused a water leakage from two of the site's primary containment vessels (PCVs).

A nuclear alert order was issued by the plant about 20 minutes after the earthquake, and the water treatment and transfer facilities were shut down. Inspections after the event revealed no anomalies and the nuclear alert order was rescinded on February 14.

The nuclear plant in Fukushima Prefecture in northeastern Japan is now undergoing decommissioning.

Decommissioning effort delayed for two Fukushima Daiichi buildings

April 22, 2020, 9:57AMRadwaste Solutions

Decommissioning work in parts of the Fukushima Daiichi plant in Japan has been delayed after engineers discovered that sandbags placed in the basements of buildings near Units 1 and 3 were found to contain excessive radiation levels. Tokyo Electric Power Company (TEPCO) operates the plant and is in charge of the decommissioning efforts following the accident caused by the earthquake and tsunami on March 11, 2011.

2019 - A Wish List in Nuclear Energy

January 10, 2019, 3:54PMANS Nuclear CafeWill Davis

Welcome to 2019!  I hope everyone who took a break enjoyed it. For those who didn't, why didn't you?  Initially, I had thoughts of trying to separate from social media and news to a significant extent during the holidays but, after conversations with Linda Zec (our wonderful ANS staff liaison for the Social Media Team, among many other things) decided that it was impractical to do so for a variety of reasons.  So, as the holiday furor ebbed and flowed and I continued, still connected, to read news and year-end summations, I found myself wishing that there wouldn't be so much frustrating news in 2019.  That's why I decided to open my eighth calendar year writing for the ANS Nuclear Cafe with a wish list, or "listicle" in the inside jargon, if you prefer.  Here, in ascending order of importance (or, I suppose, increasing order of unlikelihood) are my five wishes for this new year in nuclear energy.  (All on one screen; no annoying "next" buttons.  You're welcome.)

Decommissioning of Private Assets is Public Matter in Japan; TEPCO Forges Ahead

September 26, 2013, 1:56PMANS Nuclear CafeWill Davis


Fukushima Daiichi Units 5 (left) and 6 (right) seen in October 2012 behind the newly completed breakwall.

Earlier this month, Japanese Prime Minister Shinzo Abe conducted a visit to Tokyo Electric Power Company's Fukushima Daiichi nuclear station to examine conditions at the site and to gauge TEPCO's response to numerous ongoing problems. When Abe spoke to reporters after the visit, he mentioned (for reasons still unknown) that he had suggested to TEPCO that it decommission Unit 5 and Unit 6 on the site, so that it could focus its efforts squarely on the work required to recover from the nuclear accidents at Units 1, 2, and 3. This was reported with some surprise in many quarters.