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2026 ANS Winter Conference & Expo
November 15–18, 2026
Phoenix, AZ|Arizona Grand Resort & Spa
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Nuclear Science and Engineering
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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 MCD
Tuesday, June 9, 2020|12:00–2:10PM EDT|8
Session Chair:
David Griesheimer (Naval Nuclear Laboratory)
Alternate Chair:
Tara Pandya (ORNL)
Session Organizer:
Steven P. Hamilton
Staff Producer:
Jessica Vazquez (American Nuclear Society)
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To access paper attachments, you must be logged in and registered for the meeting.
Implicit Methods with Reduced Memory for Time-Dependent Boltzmann Transport Equation
Dmitriy Y. Anistratov (NC State Univ.)
Paper
Matrix Riccati Equation Method (MREM) of Solution of the Neutron Transfer Equation
B. Ganapol (Univ. of Arizona)
A Novel Analytical Nodal Method for Solution of the SN Transport Equation
Joshua Rocheleau (The Ohio State Univ.), Dean Wang (The Ohio State Univ.)
