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Journal of Radioanalytical and Nuclear Chemistry

, Volume 286, Issue 3, pp 745–750 | Cite as

Study of gas generation in real L/ILW containers

  • Mihály Molnár
  • László Palcsu
  • István Futó
  • Éva Svingor
  • Zoltán Major
  • Mihály Veres
  • Péter Ormai
  • István Barnabás
Article

Abstract

To obtain reliable estimates of the quantities and rates of the gas production in L/ILW a series of measurements was carried in the last 7 years in Hungary. The typical gas production rates were 0.05–0.2 STP litre gas/day for CO2 and CH4 generation, and less for H2. No explosive gas mixture was indicated in the L/ILW drums during the investigated storage period. Compositions of headspace gases in closed L/ILW vaults were in agreement with gas generation processes observed in L/ILW drums. The stable carbon isotope measurements show that the main source of the CO2 gas is the degradation of organic matter and indicates microbial degradation processes as the main sources of CH4. Typical tritium activity concentrations were <10 Bq/l gas in the drums and <1,000 Bq/l gas in the vaults. Typical 14C activity values of the headspace gases were <2.0 Bq/l gas in the drums and <1,000 Bq/l gas in the vaults.

Keywords

Radioactive waste Gas generation 314CO2 CH4 

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  • Mihály Molnár
    • 1
  • László Palcsu
    • 1
  • István Futó
    • 1
  • Éva Svingor
    • 1
  • Zoltán Major
    • 1
  • Mihály Veres
    • 2
  • Péter Ormai
    • 3
  • István Barnabás
    • 3
  1. 1.Hertelendi Laboratory of Environmental Studies, Institute of Nuclear Research of the HASDebrecenHungary
  2. 2.Isotoptech Zrt.DebrecenHungary
  3. 3.Public Agency for Radioactive Waste Management (PURAM) of HungaryBudaörsHungary

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