Accession Number:

ADA127977

Title:

Extinguishing Deep-Seated Cargo Hold Fires with Carbon Dioxide

Descriptive Note:

Final rept.

Corporate Author:

COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT

Report Date:

1983-03-01

Pagination or Media Count:

55.0

Abstract:

This test program evaluated the effectiveness of carbon dioxide in extinguishing, controlling, and containing deep-seated Class A cargo fires. Tests were conducted to identify a Class A test fuel closely simulating cotton without its high costs determine an ignition source for creating and reproducing standard deep-seated fires, create deep-seated fire scenarios in single bales of cardboard test fuel for comparison with, and modeling of, full- scale cargo hold tests and determine extinguishment, control, and confinement concentrations of carbon dioxide for Class A cargo hold fires. The results indicated that corrugated cardboard with its low cost and rapid, sustained fire buildup represented the best Class A fuel substitute for cotton, electric charcoal ignitors 120V, 525W were found to maintain high, reproducible test temperatures inside the bales, the single-bale chamber tests created model fire scenarios comparable to the full-scale tests for comparing time temperature curves and investigating the effects of different agent concentrations, the extinguishment of a deep-seated Class A cargo hold fire at sea is highly unlikely using the quantity of carbon dioxide which a vessel can economically carry, a carbon dioxide concentration of twenty-five percent or greater will, however, extinguish the superficial flames created by deep-seated fire, and this concentration will also contain and control the smoldering combustion to a rate which will not endanger the structural integrity of the vessel.

Subject Categories:

  • Marine Engineering
  • Safety Engineering
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE