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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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Fusion Science and Technology
Fukiushima Daiichi: 10 years on
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.
Toshihiko Yamanishi et al.
Fusion Science and Technology | Volume 54 | Number 1 | July 2008 | Pages 315-318
Technical Paper | Environment and Safety | dx.doi.org/10.13182/FST08-A1821
Articles are hosted by Taylor and Francis Online.
The building and safety systems of the TPL (Tritium Process Laboratory) were constructed in 1984 and 1985. The safety systems in the TPL have operated with tritium since March 1988. The amount of tritium held in the TPL was 13 PBq in March 2007. The average tritium concentration in a stream from a stack of the TPL to the environment was 6.0 x 10-3 Bq/cm3 and is 1/100 smaller than that of the regulatory value for the concentration of HTO in the air in Japan. Safe operation with tritium has been demonstrated. A set of failure data for several main components of the TPL was also obtained as valuable data for a fusion tritium facility.