A study was conducted to evaluate the hazards due to smoke formation in shipboard fires. The physical and chemical properties of the smoke particulates generated during combustion were determined for representatives of the following three classes of materials abundantly present on shipboard: a wall insulation material, cable jacket materials, and a hydraulic fluid. Physical properties measured were particle size distribution and mean particle diameter, mass fraction of fuel converted to particulates, optical density, particle refractive index, and particulate volume fraction. The dependence of these properties on the temperature of the test-chamber atmosphere and the mode of combustion (flaming or smoldering) was determined. Chemical analysis of the smoke particulates determined the major toxic species generated during the combustion of these materials. Study results indicate that these materials produce smoke particles with log-normal size distributions and mean diameters ranging from 0.4 to 1.5 microns (smoldering) and 1.0 to 1.3 microns (flaming). For these materials total particulate mass is greatest under smoldering combustion, and optical density is greatest under flaming combustion. For smoldering combustion, increasing ambient temperature reduces the mean diameter, peak optical density, volume fraction, and total particulate volume; ambient temperature has little effect upon these properties for flaming combustion. Toxic species identified during smoldering combustion include carbon monoxide, benzene, carbonyl sulfide, hydrogen chloride, acrolein and methacrolein.

  • Corporate Authors:

    University of Georgia, Experiment

    Georgia Experiment Station
    Experiment, GA  United States 

    Naval Research Laboratory

    4555 Overlook Avenue, SW
    Washington, DC  United States  20375-5320
  • Authors:
    • Zinn, B T
    • Browner, R F
    • POWELL, E A
    • Pasternak, M
    • Gardner, R O
  • Publication Date: 1980-7-22

Media Info

  • Pagination: 64 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00326994
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: NRL-8414
  • Contract Numbers: N00014-78-C-0771
  • Files: TRIS
  • Created Date: Feb 18 1981 12:00AM