VENTILATION REQUIREMNETS IN HOLDS FOR CONTAINER SHIPS WHEN THEY CARRY DANGEROUS GOODS

New IMCO regulations are being proposed for the ventilation of holds on container ships when they carry dangerous goods. The objective of this thesis is to determine the extent to which ventilation is necessary with below deck storage of flammable liquids, also toxic and flammable gases. To accomplish this, two mathematical models have been developed to predict the rate of change of the vapor or gas concentration and propagation in holds. First model developed to study the concentration built-up for toxic and flammable gases for non-ventilated and ventilated holds. Second model developed to study the concentration built-up DOCUMENT for volatile flammable liquids when the holds are ventilated at rates of zero ventilation and upwards. The conclusion of this analysis is that a ventilation of three and a half times per hour is enough to reduce the risk considerably for a toxic concentration build-up for toxic gases and keep the flammable concentration below the flammability range for flammable gases and liquids.

• Corporate Authors:

  Massachusetts Institute of Technology

  Department of Ocean Engineering, 77 Massachusetts Avenue
  Cambridge, MA  United States  02139
• Authors:
  • Georgas, C S
• Publication Date: 1978-6

Subject/Index Terms

• TRT Terms: Containers; Containerships; Flammable liquids; Hazardous materials; Mathematical models; Safety; Toxicity; Transportation; Ventilation systems
• Identifier Terms: International Maritime Consultative organization
• Old TRIS Terms: Cargo ventilation; Flammable liquids transportation; Gas vapor concentration; Hazardous materials transportation; Imco container safety
• Subject Areas: Safety and Human Factors; Transportation (General);

Filing Info

• Accession Number: 00173912
• Record Type: Publication
• Source Agency: Massachusetts Institute of Technology
• Report/Paper Numbers: MS Thesis
• Files: TRIS
• Created Date: May 3 1978 12:00AM