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Japanese Government to release map of potential final nuclear disposal sites

Government to release map of potential final nuclear disposal sites this summer, Japan Times, 3 May 17 KYODO, STAFF REPORT, The government has set the criteria for a map meant to identify potential final disposal sites for high-level radioactive nuclear waste, paving the way for its release as early as this summer.

The process of finding a host for nuclear waste could face challenges amid public concerns over safety.

Based on the map, the government will approach select municipalities to allow research to be conducted for suitable sites to store waste from nuclear power generation.

For permanent disposal, high-level nuclear waste needs to be stored at a final depository more than 300 meters underground for up to about 100,000 years until radiation levels fall and there is no longer potential harm to humans and the environment.

The government plans to create a permanent underground repository somewhere in stable bedrock so the canisters can be stored for tens of thousands of years.

The map is likely to classify which areas are geologically suitable for such a structure to be built deep enough underground. This would rule out areas near active faults and volcanoes as well as oil and coal fields.

Based on waste transport criteria, the map is likely to show that zones within 20 km of the coastline are favorable to host final disposal sites.

The government hopes other municipalities — not just the ones located near nuclear power plants — may also become interested in hosting the disposal facilities. It also wants to show that a variety of places nationwide are suitable for nuclear waste management.

The map was originally planned for a 2016 release but the publication date was later postponed, as some local governments were wary that disposal sites would be imposed on them.

About 18,000 tons of spent fuel currently exist in Japan. Including spent fuel that has already been reprocessed, the country’s total jumps to about 25,000 canisters of vitrified high-level waste, all of which needs to be managed.

The process to find local governments willing to host final storage started in 2002, but little progress was made due mainly to opposition from local residents.

In May 2015, the central government introduced a plan announcing that final depository site selection would be based on scientific grounds, rather than waiting for municipalities to volunteer.

Before presenting the map, the government will hold symposiums between mid-May and June at nine cities to explain the map criteria to the public. The cities include Tokyo, Nagoya and Fukuoka…….http://www.japantimes.co.jp/news/2017/05/02/national/government-release-map-potential-final-nuclear-disposal-sites-summer/#.WQlFDEWGPGg

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May 3, 2017 - Posted by | Japan, wastes

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