NEW APPROACH TO GAS VENTING OF TANKERS

An analysis is made of the benefits which can be obtained by ejecting the gases, displaced when petroleum is loaded into cargo tanks, at a high velocity so that they reach a height well above the ships' working areas. It has now been established that a minimum efflux velocity of 100 fps will provide adequate dispersal and it is proposed that this velocity is achieved by installing a variable nozzle in each outlet in which tank pressure is used to provide a vent area proportional to the loading rate. The theory of mixing which takes place in turbulent jets in still air is considered and a study of previous experimental results relating efflux velocity to projection length and entrainment ratio is reviewed.

  • Corporate Authors:

    Royal Institution of Naval Architects

    10 Upper Belgrave Street
    ,   USA 
  • Authors:
    • Martin, W S
  • Publication Date: 1970-7

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00019130
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Oct 29 1971 12:00AM