Management of the least radioactive waste is the most advanced, both in France and in other countries. Several countries operate waste repositories similar to France's CSA and CSM facilities for low- and intermediate-level short-lived waste (LILW-SL).
Most of these are above-ground facilities. Others are near-surface underground installations, such as the SFR repository in Sweden, which has been excavated from the surrounding granite at a depth of around 50 m. In 1992 and 1998, Finland opened two near-surface underground repositories built adjacent to two nuclear power plants. In the United States, the chosen option is near-surface disposal following above-ground interim storage.
Management strategies for intermediate-level long-lived waste (ILW-LL) are less advanced. In the United Kingdom, waste is stored at the site where it was produced. Only a small proportion of waste has been conditioned. In Japan, waste will be disposed of in Rokkasho-Mura, in an underground repository at a depth between 50 and 100 m.
Much less progress has been made in the area of high-level waste management. There is a consensus among experts in favour of ***deep geological disposal***, a solution which they consider to be necessary, feasible and in principle safe. Most projects have not yet moved beyond the geological formation assessment phase. They face public acceptability issues and are subject to parliamentary and in local approval. For example, France had to give up studies on granite formations owing to local protest movements, and base its studies of this option on results obtained for granite in Scandinavia, where this type of research was accepted.
In these "wait and see" conditions, interim storage is the rule in all countries concerned by such issues. Such facilities enable spent fuel or waste to be stored and monitored until a geological repository is available. They allow radioactive materials to cool. Spent fuel may be stored at power plants or centralised at large facilities. A combination of the two approaches is also possible. The technical solutions relating to conditioning and interim storage of radioactive materials and waste in safe, monitored facilities are similar from one country to another.
Countries that reprocess their spent fuel also hold vitrified waste in interim storage in dry facilities. This applies to Japan, in particular. Germany is in an intermediate situation: the country stopped reprocessing in 2005, and must henceforth store its spent fuel near to its plants. It also keeps vitrified waste in interim storage.
Together with its Finnish counterpart, the Swedish project is the most advanced of all European projects, having succeeded in building a remarkable and much-envied consensus. This project has now reached the stage of choosing between two potential repository sites accepted by the population.
The United States were expected to become one of the first countries to have a repository, through the huge Yucca Mountain project in the Nevada desert. However, this project was abandoned by the Obama administration. The United States are back to square one, storing their waste near their power plants throughout this huge country. In 2012, ***the blue ribbon commission*** was scheduled to issue its opinion on the nuclear cycle in general, and final disposal of waste, in particular.
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