Gas generation from low-level radioactive waste: Concerns for disposal

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The Advisory Committee on Nuclear Waste (ACNW) has urged the Nuclear Regulatory Commission (NRC) to reexamine the topic of hydrogen gas generation from low-level radioactive waste (LLW) in closed spaces to ensure that the slow buildup of hydrogen from water-bearing wastes in sealed containers does not become a problem for long-term safe disposal. Brookhaven National Laboratory (BNL) has prepared a report, summarized in this paper, for the NRC to respond to these concerns. The paper discusses the range of values for G(H{sub 2}) reported for materials of relevance to LLW disposal; most of these values are in the range of ... continued below

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Pages: (6 p)

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Siskind, B. January 1, 1992.

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The Advisory Committee on Nuclear Waste (ACNW) has urged the Nuclear Regulatory Commission (NRC) to reexamine the topic of hydrogen gas generation from low-level radioactive waste (LLW) in closed spaces to ensure that the slow buildup of hydrogen from water-bearing wastes in sealed containers does not become a problem for long-term safe disposal. Brookhaven National Laboratory (BNL) has prepared a report, summarized in this paper, for the NRC to respond to these concerns. The paper discusses the range of values for G(H{sub 2}) reported for materials of relevance to LLW disposal; most of these values are in the range of 0.1 to 0.6. Most studies of radiolytic hydrogen generation indicate a leveling off of pressurization, probably because of chemical kinetics involving, in many cases, the radiolysis of water within the waste. Even if no leveling off occurs, realistic gas leakage rates (indicating poor closure by gaskets on drums and liners) will result in adequate relief of pressure for radiolytic gas generation from the majority of commercial sector LLW packages. Biodegradative gas generation, however, could pose a pressurization hazard even at realistic gas leakage rates. Recommendations include passive vents on LLW containers (as already specified for high integrity containers) and upper limits to the G values and/or the specific activity of the LLW.

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Pages: (6 p)

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OSTI; NTIS; INIS; GPO Dep.

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  • Waste management '92, Tucson, AZ (United States), 1-5 Mar 1992

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  • Other: DE92009157
  • Report No.: BNL-NUREG-47144
  • Report No.: CONF-920307--47
  • Grant Number: AC02-76CH00016
  • Office of Scientific & Technical Information Report Number: 5601498
  • Archival Resource Key: ark:/67531/metadc1093688

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1992

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  • Feb. 10, 2018, 10:06 p.m.

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  • April 27, 2018, 3:40 p.m.

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Siskind, B. Gas generation from low-level radioactive waste: Concerns for disposal, article, January 1, 1992; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc1093688/: accessed May 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.