While the IAEA is busy trying to convince the public yet again that TEPCO should dump contaminated water into the sea, METI has been working on plans to store or dispose of the tritium laced water.
In a March 14 set of reports METI documented their plans for potential tritium disposal. The post ALPS water will require removal of iodine 129 and cobalt 60 before it can be handled as tritium only water. METI operates under the assumption they have gotten to that point.
The draft plan includes a variety of options. They do appear to be considering all of them at this point including more complex solutions.
- Injection and disposal into the geological formation
- Release to the sea
- Release to the atmosphere in the form of steam
- Release to the atmosphere as hydrogen gas after reducing to hydrogen
- Underground burial and disposal after solidification and gelification
- disposal of small amount of highly concentrated tritiated water
- Storage of significant amount of tritiated water
- Storage of small amount of highly concentrated tritiated water
METI is looking somewhat seriously at some of the more complex methods to separate the tritium out of the water but this may require extensive research and testing to get a working design able to handle the large volumes of water at the plant.
This work is a big step forward for better solutions than just releasing it to the environment. These ideas being worked on include many of the proposals we previously made to IRID for contaminated water handling. We suggested both the decay storage option and the concentrated tritium storage as viable solutions to the issue.
TEPCO is mentioned nowhere in this research work and has not reported any of it on their website.
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