Use of Air Modeling to Reduce Facility Demolition Costs

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Description

DOE faces the problem of decommissioning facilities contaminated with plutonium, uranium, and beryllium. The standard process has been to remove the contaminated process equipment from a facility, and then decontaminate the residual radiological and hazardous contamination from the facility structure to an ''unconditional release'' level. The facility would then be taken down as a clean demolition. Several beryllium-contaminated facilities were identified that will be particularly difficult to decontaminate to these release levels. A number of alternative decommissioning approaches were investigated that would require less decontamination, and thus reduced cost and schedule. Initial alternative approaches proposed erection of barriers (i.e. building-size ... continued below

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15 pages

Creation Information

Smith, Dennis; Sanford, Peter & Parsons, Duane A. February 26, 2003.

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Description

DOE faces the problem of decommissioning facilities contaminated with plutonium, uranium, and beryllium. The standard process has been to remove the contaminated process equipment from a facility, and then decontaminate the residual radiological and hazardous contamination from the facility structure to an ''unconditional release'' level. The facility would then be taken down as a clean demolition. Several beryllium-contaminated facilities were identified that will be particularly difficult to decontaminate to these release levels. A number of alternative decommissioning approaches were investigated that would require less decontamination, and thus reduced cost and schedule. Initial alternative approaches proposed erection of barriers (i.e. building-size tent structures with ventilation controls) to minimize the release of contamination to the environment. More recently we have investigated methods to control contamination at the structure surfaces before and during demolition, and model the risk posed to the workers, public, and the environment by the small residual material actually dispersed. This approach promises to minimize decontamination by removing only the highest contamination levels, and eliminates the need for erecting large contamination control structures along with the attendant ventilation equipment and administrative controls. The modeling has demonstrated the regulatory acceptability of this approach, and the approach is ready to be discussed with the regulators and the public.

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15 pages

Source

  • Waste Management 2003 Symposium, Tucson, AZ (US), 02/23/2003--02/27/2003

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  • Report No.: NONE
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 825750
  • Archival Resource Key: ark:/67531/metadc781468

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  • February 26, 2003

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • May 6, 2016, 1:27 p.m.

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Smith, Dennis; Sanford, Peter & Parsons, Duane A. Use of Air Modeling to Reduce Facility Demolition Costs, article, February 26, 2003; (digital.library.unt.edu/ark:/67531/metadc781468/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.