Concrete spaller. Innovative technology summary report

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Description

The US Department of Energy (DOE) has numerous buildings and facilities that have become contaminated through operation of nuclear reactors, fuel fabrication processes, and research laboratory operations. These buildings and facilities, often constructed of concrete, need to be decontaminated before they can be safely decommissioned or demolished. Pacific Northwest National Laboratory`s concrete spaller is a hand-held tool that can be used for decontaminating flat or slightly curved concrete surfaces, obtaining concrete samples, and in-depth removal from cracks in concrete. The concrete spaller includes a 9-ton hydraulic cylinder and spalling bit. It runs from a hydraulic pump that expands the spaller ... continued below

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29 p.

Creation Information

Creator: Unknown. December 1, 1998.

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Description

The US Department of Energy (DOE) has numerous buildings and facilities that have become contaminated through operation of nuclear reactors, fuel fabrication processes, and research laboratory operations. These buildings and facilities, often constructed of concrete, need to be decontaminated before they can be safely decommissioned or demolished. Pacific Northwest National Laboratory`s concrete spaller is a hand-held tool that can be used for decontaminating flat or slightly curved concrete surfaces, obtaining concrete samples, and in-depth removal from cracks in concrete. The concrete spaller includes a 9-ton hydraulic cylinder and spalling bit. It runs from a hydraulic pump that expands the spaller in pre-drilled holes in the concrete. The result is removal of concrete chunks that fall into the attached metal shroud. The concrete spaller is more efficient than traditional tools such as hand-held pneumatic scabblers and scalers. For example, the spaller is capable of spalling 1.3 m{sup 3}/hr (0.23 ft{sup 2}/min), compared to 1.1 m{sup 2}/hr (0.20 ft{sup 2}/min), for the baseline scabbler and scaler demonstrated at 3-mm (1/8-in.) depth. The spaller is also capable of removing concrete at a greater depth than traditional tools. Operating cost of the spaller ($128/m{sup 2} or $11.93/ft{sup 2} [optimum conditions]) is less than the baseline tools: scaler ($155/m{sup 2} or $14.40/ft{sup 2}) and scabbler ($156/m{sup 2} or $14.53/ft{sup 2}).

Physical Description

29 p.

Notes

public availability from Center for Environmental Information (United States), 1-800-736-3282; OSTI as TI99002345

Source

  • Other Information: PBD: Dec 1998

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  • Other: TI99002345
  • Report No.: DOE/EM--0398
  • DOI: 10.2172/335210 | External Link
  • Office of Scientific & Technical Information Report Number: 335210
  • Archival Resource Key: ark:/67531/metadc678911

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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 1, 1998

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • June 14, 2016, 2:24 p.m.

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Concrete spaller. Innovative technology summary report, report, December 1, 1998; United States. (digital.library.unt.edu/ark:/67531/metadc678911/: accessed October 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.