Decision-in-principle on final disposal of spent fuel in finland

摘要

The main target of the Finnish programme for spent fuel disposal is the year 2020 when everything should be ready to start disposal. The most important milestone so far has been the selection of the Olkiluoto area in the municipality of Eurajoki as the site of the repository. The selection was formally accepted by the Finnish Parliament in the so-called Decision-in-Principle in May 2001. The choice of Olkiluoto as the repository site was based on a long investigation process strated in the early 1980's and including deep drillings and other geologic investigations on several candidate sites since 1987. The site selection was based on the outcome of the Environmental Assessment Process (EIA) conducted in 1997-1999. The EIA also included an assessment of the long-term safety of disposal ("TILA-99"). The Decision-in-Principle means that the further work on geologic disposal can be based on a KBS-3 type concept and the site investigations can be concentrated at Olkiluoto. In January 2001 Posiva published a programme for research, development, technical planning and design work for the period preceding the construction license. A substantial part of the programme focuses on the planned underground rock characterisation facility, ONKALO, at Olkiluoto.