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Long-Term in Situ Gas Generation in Low-Level Waste Disposal: Insights from the 26-Year Experiment at Olkiluoto

  • Teollisuuden Voima Oyj

Research output: Contribution to conferenceConference PosterScientific

Abstract

The GasOff project studied gas generation from low-level radioactive waste at TVO’s Olkiluoto disposal facility over 26 years. Sixteen steel drums containing cellulose-based materials were monitored under simulated repository conditions. Results showed gas production, mainly methane and carbon dioxide from microbial activity. Microbial communities contributed to both gas generation and steel corrosion. Concrete containers maintained structural integrity, though some surface changes were observed. The experiment provides valuable data for future safety assessments and long-term management of radioactive waste repositories.
Original languageEnglish
Publication statusPublished - Mar 2026
MoE publication typeNot Eligible
Event52nd Waste Management Symposia, WM 2026 - Phoenix, United States
Duration: 8 Mar 202612 Mar 2026
https://www.wmsym.org/conference-information/wm2026-conference/

Conference

Conference52nd Waste Management Symposia, WM 2026
Abbreviated titleWM2026
Country/TerritoryUnited States
CityPhoenix
Period8/03/2612/03/26
Internet address

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 12 - Responsible Consumption and Production
    SDG 12 Responsible Consumption and Production

Keywords

  • LLW
  • nuclear waste
  • final disposal
  • gas generation

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