|concept • components • advantage • methods • loading • discharge • categories • what makes a tank special? • glossary|
Tankspan tanks are designed to ensure the greatest degree of acceptance by the authorities and comply with the following international approvals, recommendations, conventions, standards and regulations:
– product use
International Maritime Dangerous Goods Code
|The Tankspan fleet includes tanks in the following categories:|
Type 1 (hazardous) tanks
These units are designed for the carriage of:
• Liquids with a flashpoint of less than 0 deg C
• Certain high-hazard toxins or corrosives
• Spontaneously combustible materials
• Cargoes which are dangerous when exposed to moisture
• Oxidising substances
• Liquids with a total containment pressure of not more than the maximum allowable working pressure of the tank
Note: Corrosive or unstable cargoes may require the vessel to be constructed from special types of steel or specially lined. In no circumstances should liquids be carried if the vapour pressure is at 65 deg C, plus other pressures induced at this temperature, plus 0.35kg/sq cm (15 psi) exceeds the design pressure of the tank.
The standard IMO 1 tank is provided with both a top and bottom outlet.
Type 2 (low hazardous) tanks
IMO Type 5 (gas) tanks
of IMO Types has been replaced by the “T” code system. We have
retained the above detail for point of reference, as the “T”
code system has to be read in conjunction with the current Regulations.
These provisions apply to the transportation of hazardous materials in UN portable tanks. Portable tank instructions specify the requirements applicable to a portable tank when use for the transportation of a specific hazardous material.
| Portable tank instructions
T1 through T22 specify the applicable minimum test pressure, the minimum
shell thickness (in reference steel), bottom opening requirements and pressure
relief requirements. We list below the T code and minimum test pressure
(bar) only, as the relevant Regulations need to be consulted to deduce the
correct requirements of the other factors.
Click for T Codes Table