Evaluation of pressure response in the Los Alamos controlled air incinerator during three incident scenarios

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The Los Alamos Controlled Air Incinerator (CAI) is a system designed to accept radioactive mixed waste containing alpha-emitting radionuclides. A mathematical model was developed to predict the pressure response throughout the offgas treatment system of the CAI during three hypothetical incident scenarios. The scenarios examined included: (1) loss of burner flame and failure of the flame safeguard system with subsequent reignition of fuel gas in the primary chamber, (2) pyrolytic gas buildup from a waste package due to loss of induced draft and subsequent restoration of induced draft, and (3) accidental charging of propellant spray cans in a solid waste ... continued below

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28 p.

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Vavruska, J.S.; Elsberry, K.; Thompson, T.K. & Pendergrass, J.A. May 1, 1996.

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Description

The Los Alamos Controlled Air Incinerator (CAI) is a system designed to accept radioactive mixed waste containing alpha-emitting radionuclides. A mathematical model was developed to predict the pressure response throughout the offgas treatment system of the CAI during three hypothetical incident scenarios. The scenarios examined included: (1) loss of burner flame and failure of the flame safeguard system with subsequent reignition of fuel gas in the primary chamber, (2) pyrolytic gas buildup from a waste package due to loss of induced draft and subsequent restoration of induced draft, and (3) accidental charging of propellant spray cans in a solid waste package to the primary chamber during a normal feed cycle. For each of the three scenarios, the finite element computer model was able to determine the transient pressure surge and decay response throughout the system. Of particular interest were the maximum absolute pressures attainable at critical points in the system as well as maximum differential pressures across the high efficiency particulate air (HEPA) filters. Modeling results indicated that all three of the scenarios resulted in maximum HEPA filter differential pressures well below the maximum allowable levels.

Physical Description

28 p.

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INIS; OSTI as DE96009035

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  • 15. international conference on incineration and thermal treatment technologies, Savannah, GA (United States), 6-10 May 1996

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  • Other: DE96009035
  • Report No.: LA-UR--96-1103
  • Report No.: CONF-960535--3
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 230390
  • Archival Resource Key: ark:/67531/metadc666993

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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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  • May 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Feb. 29, 2016, 9:03 p.m.

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Vavruska, J.S.; Elsberry, K.; Thompson, T.K. & Pendergrass, J.A. Evaluation of pressure response in the Los Alamos controlled air incinerator during three incident scenarios, article, May 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc666993/: accessed November 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.