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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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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 OPD
Wednesday, June 10, 2020|2:30–4:15PM EDT|3
Session Chair:
W. Neal Mann (The University of Texas at Austin)
Session Organizer:
Alternate Chair:
N. Dianne B. Ezell (ORNL)
Staff Producer:
Daniel Goldberg (American Nuclear Society)
Energy storage systems could be integrated with nuclear power plants to increase flexibility and potentially enhance revenues. This session will cover energy storage technologies that could couple to various coolant temperatures (medium- to high-temperature) or be integral to a plant's design. Energy storage classes include, but are not limited to, electrochemical batteries, mechanical compression/liquefaction of fluids, gravitational potential energy, heat storage materials (solids, liquids, gases; single- and multi-phase fluids), and power-to-X/synfuels.
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Base-Load Light-Water Reactors with Variable Electricity Using Crushed-Rock Heat Storage and Steam Peaking Plant with High-Efficiency Steam Injectors
C. Forsberg (MIT), T. Narabayashi (Tokyo Institute of Technology)
Paper
System Efficiency and Dynamic Study of Ca(OH)2/CaO Chemical Heat Pump
Aman Gupta (Univ. of Idaho), Vivek Utgikar (Univ. of Idaho), Paul D. Armatis (Oregon State Univ.), Brian M. Fronk (Oregon State Univ.), Piyush Sabharwall (INL)
Separating Nuclear Reactors from the Power Block with Heat Storage: A New Power Plant Design Option: Workshop Summary
Charles Forsberg (MIT), Piyush Sabharwall (INL), Andrew Sowder (EPRI)