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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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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 RPD
Wednesday, June 10, 2020|2:30–4:15PM EDT|9
Session Chair:
Moussa Mahgerefteh (Exelon Corporation)
Alternate Chair:
Pavel Tsvetkov (LANL)
Session Organizer:
Track Organizer:
Staff Producer:
Jessica Vazquez (American Nuclear Society)
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Analytic Treatment of Intra-Fuel-Rod Temperature Distributions in the GPU-Based Continuous Energy Monte Carlo Code PRAGMA
Namjae Choi (Seoul Nat'l Univ.), Han Gyu Joo (Seoul Nat'l Univ.)
Paper
Presentation Video (Visible to Attendees)
Presentation Video
The Application of the Backward Differentiation Formula on the Transient Coupling of Three-dimensional Neutron Kinetics and Thermal Hydraulic
Yun Cai (Nuclear Power Institute of China), Xingjie Peng (Nuclear Power Institute of China), Qing Li (Nuclear Power Institute of China), Yingrui Yu (Nuclear Power Institute of China), Rui Guo (Nuclear Power Institute of China)
Adjoint Driven Ex-Core Response Estimation in PWR with Thermal Feedback
Shane C. Henderson (ORNL), Tara M. Pandya (ORNL), Shane Stimpson (ORNL)
