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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
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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 MSTD
Thursday, June 11, 2020|12:15–2:00PM EDT|7
Session Chair:
Heng Ban (Univ. of Pittsburgh)
Alternate Chair:
Kallie E. Metzger
Session Organizer:
Kenneth J. Geelhood (PNNL)
Staff Producer:
Jay Bogardus (American Nuclear Society)
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Analysis of Graphite Matrix Kinetics and Burn-off Products under Off-Normal High-Temperature Gas-Cooled Reactors Conditions
Brian A. Brigham (Univ. of Texas, San Antonio), Katherine I. Montoya (Univ. of Texas, San Antonio), Tyler J. Gerczak (ORNL), Elizabeth Sooby Wood (Univ. of Texas, San Antonio)
Paper
Stress Profile in Coating Layers of TRISO Fuel Particles in Contact with One Another
Daniel Schappel (ORNL), Kurt A. Terrani (ORNL)
Fabrication and Characterization Methodology of Transformational Challenge Reactor Fuel Form
Gokul Vasudevamurthy (ORNL), Dylan Richardson (ORNL), Micheal Trammell (ORNL), Brian Jolly (ORNL), Andrew Nelson (ORNL), Grant Helmreich (ORNL), Austin Schumacher (ORNL), Trevor Smuin (INL), Kurt Terrani (ORNL)
