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Conference Spotlight
2026 ANS Winter Conference & Expo
November 15–18, 2026
Phoenix, AZ|Arizona Grand Resort & Spa
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Nuclear Science and Engineering
October 2026
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August 2026
Latest News
Posiva begins drilling disposal holes at Finland’s Onkalo repository
Last week the Finnish nuclear waste management company Posiva began drilling holes for final disposal at the Onkalo deep geological repository, near the Olkiluoto nuclear power plant in western Finland. The company’s German-made Deposition Hole Boring Machine (DHBM) took about 10 hours to drill the first hole, with a depth of 8.4 meters and a diameter of 1.75 meters, into the 1.9-billion-year-old bedrock. This is the first deposition hole intended for an iron-copper canister containing spent nuclear fuel—though test holes have been drilled at the site since 2022.
The Onkalo repository received a favorable safety assessment from the Radiation and Nuclear Safety Authority of Finland earlier in August.
Technical Session|Sponsored by RPSD|Cosponsored by RPD
Tuesday, June 9, 2020|2:30–4:15PM EDT|6
Session Chair:
Amir A. Bahadori
Alternate Chair:
Alexander E. Perry
Session Organizer:
Michael Lorne Fensin
Staff Producer:
Daryl Rizzo (American Nuclear Society)
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Investigation into the Breakdown of Assumptions for 1D Radiation Transport in Air
L. M. Rolison (LANL), M. L. Fensin (LANL), K. C. Kelley (LANL), S. S. McCready (LANL)
Paper
First Steps in Scaling Adjoint Response to Areal Density for 1-D Neutron Transport in Air
M. L. Fensin (LANL)
International Platforms to Perform Atmospheric Dispersion Models for Dose Projection
Sanjoy Mukhopadhyay (IAEA)
