PRESSURE RISE IN A VENTED CARGO TANK DUE TO EXTERNAL HEATING

The normal venting capacity of marine cargo tanks appears to be adequate for relieving vapor generated when integral tanks are exposed to an external fire. However, the unwetted tank walls surrounding the ullage are subject to substantial weakening in those cases where the fire heat flux increases the wall temperature about 1000 F. Convection and radiation can adequately cool the unwetted wall only for incident heat flux less than 16,000 BTU/hr/ft2. Thus, the failure mode of cargo tanks with an external fire may be due not to the vent system, but rather to heating of the unwetted wall. /Author/

  • Corporate Authors:

    Little (Arthur D), Incorporated

    Acorn Park
    Cambridge, MA  United States  02140
  • Authors:
    • Wilson Jr, R P
    • Phani Raj, P K
  • Publication Date: 1976-4

Media Info

  • Pagination: 84 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00141210
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: USCG-D-70-76 Final Rpt.
  • Contract Numbers: DOT-CG-42357-A
  • Files: NTIS, TRIS
  • Created Date: Oct 26 1976 12:00AM