Type Of Tanks (Chemical Tanker)

Independent Tank

  • An Independent tank means a cargo-containment envelope, which is not contiguous with, or part of, the hull structure.

  • An independent tank is built and installed so as to eliminate whenever possible it's stressing as a result of stressing or motion of the adjacent hull structure.

  • An independent tank is not essential to the structural completeness of the ship’s hull.

Integral Tank

  • Integral tank means a cargo-containment envelope which forms part of the ship’s hull and

  • which may be stressed in the same manner and by the same loads which stress the contiguous hull structure and

  • which is normally essential to the structural completeness of the ship’s hull.

Gravity Tank

  • Gravity tank means a tank having a design pressure not greater than 0.07 MPa (Megapascal) or 0.7 bar gauge at the top of the tank.

  • A gravity tank may be independent or integral.

  • A gravity tank shall be constructed and tested according to recognized standards.

Pressure tank

  • Pressure tank means a tank having a design pressure greater than 0.07 MPa (Megapascal) or 0.7 bar gauge.

  • A pressure tank shall be an independent tank and shall be of a configuration permitting the application of pressure-vessel design criteria according to recognized standards.


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