Microbial degradation of low-level radioactive waste. Volume 1, Annual report for FY 1993

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Description

The Nuclear Regulatory Commission stipulates that disposed low-level radioactive waste (LLW) be stabilized. Because of apparent ease of use and normal structural integrity, cement has been widely used as a binder to solidify LLW. However, the resulting waste forms are sometimes susceptible to failure due to the actions of waste constituents, stress, and environment. This report reviews laboratory efforts that are being developed to address the effects of microbiologically influenced chemical attack on cement-solidified LLW. Groups of microorganisms are being employed that are capable of metabolically converting organic and inorganic substrates into organic and mineral acids. Such acids aggressively react ... continued below

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52 p.

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Rogers, R. D.; Hamilton, M. A.; Veeh, R. H. & McConnell, J. W. Jr. April 1, 1994.

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Description

The Nuclear Regulatory Commission stipulates that disposed low-level radioactive waste (LLW) be stabilized. Because of apparent ease of use and normal structural integrity, cement has been widely used as a binder to solidify LLW. However, the resulting waste forms are sometimes susceptible to failure due to the actions of waste constituents, stress, and environment. This report reviews laboratory efforts that are being developed to address the effects of microbiologically influenced chemical attack on cement-solidified LLW. Groups of microorganisms are being employed that are capable of metabolically converting organic and inorganic substrates into organic and mineral acids. Such acids aggressively react with cement and can ultimately lead to structural failure. Results on the application of mechanisms inherent in microbially influenced degradation of cement-based material are the focus of this report. Sufficient data-validated evidence of the potential for microbially influenced deterioration of cement-solidified LLW has been developed during the course of this study. These data support the continued development of appropriate tests necessary to determine the resistance of cement-solidified LLW to microbially induced degradation that could impact the stability of the waste form. They also justify the continued effort of enumeration of the conditions necessary to support the microbiological growth and population expansion.

Physical Description

52 p.

Notes

INIS; OSTI as TI94010211; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • Other Information: PBD: Apr 1994

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  • Other: TI94010211
  • Report No.: NUREG/CR--6188-Vol.1
  • Report No.: EGG--2730-Vol.1
  • Grant Number: AC07-76ID01570
  • DOI: 10.2172/10144189 | External Link
  • Office of Scientific & Technical Information Report Number: 10144189
  • Archival Resource Key: ark:/67531/metadc1315139

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • April 1, 1994

Added to The UNT Digital Library

  • Nov. 3, 2018, 11:47 a.m.

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  • March 15, 2019, 12:36 p.m.

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Rogers, R. D.; Hamilton, M. A.; Veeh, R. H. & McConnell, J. W. Jr. Microbial degradation of low-level radioactive waste. Volume 1, Annual report for FY 1993, report, April 1, 1994; United States. (https://digital.library.unt.edu/ark:/67531/metadc1315139/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.