Gas retention and release behavior in Hanford single-shell waste tanks

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Description

This report describes the current understanding of flammable gas retention and release in Hanford single-shell waste tanks based on theory, experimental results, and observations of tank behavior. The single-shell tanks likely to pose a flammable gas hazard are listed and described, and photographs of core extrusions and the waste surface are included. The credible mechanisms for significant flammable gas releases are described, and release volumes and rates are quantified as much as possible. The only mechanism demonstrably capable of producing large ({approximately}100 m{sup 3}) spontaneous gas releases is the buoyant displacement, which occurs only in tanks with a relatively deep ... continued below

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144 p.

Creation Information

Stewart, C. W.; Brewster, M. E.; Gauglitz, P. A.; Mahoney, L. A.; Meyer, P. A.; Recknagle, K. P. et al. December 1996.

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Description

This report describes the current understanding of flammable gas retention and release in Hanford single-shell waste tanks based on theory, experimental results, and observations of tank behavior. The single-shell tanks likely to pose a flammable gas hazard are listed and described, and photographs of core extrusions and the waste surface are included. The credible mechanisms for significant flammable gas releases are described, and release volumes and rates are quantified as much as possible. The only mechanism demonstrably capable of producing large ({approximately}100 m{sup 3}) spontaneous gas releases is the buoyant displacement, which occurs only in tanks with a relatively deep layer of supernatant liquid. Only the double-shell tanks currently satisfy this condition. All release mechanisms believed plausible in single-shell tanks have been investigated, and none have the potential for large spontaneous gas releases. Only small spontaneous gas releases of several cubic meters are likely by these mechanisms. The reasons several other postulated gas release mechanisms are implausible or incredible are also given.

Physical Description

144 p.

Notes

INIS; OSTI as DE97051412

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  • Other Information: PBD: Dec 1996

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  • Other: DE97051412
  • Report No.: PNNL--11391
  • Grant Number: AC06-76RL01830
  • DOI: 10.2172/474679 | External Link
  • Office of Scientific & Technical Information Report Number: 474679
  • Archival Resource Key: ark:/67531/metadc675302

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Office of Scientific & Technical Information Technical Reports

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

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • December 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:21 a.m.

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  • June 14, 2016, 3:18 p.m.

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Stewart, C. W.; Brewster, M. E.; Gauglitz, P. A.; Mahoney, L. A.; Meyer, P. A.; Recknagle, K. P. et al. Gas retention and release behavior in Hanford single-shell waste tanks, report, December 1996; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc675302/: accessed July 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.