There are certain conditions related to pressure and temperature for carriage of LPG that need to be maintained without posing a threat to life, environment, and cargo.
At least one of the following conditions needs to be complied with for transportation of LPG:
- The gas should be pressurized at ambient temperature.
- The gas ought to be utterly refrigerated at its boiling point, going from – 30 to – 48 degrees Celsius. This condition is known as an utterly refrigerated condition.
- The gas should be semi-refrigerated to a diminished temperature and compressed.
The construction of an LPG carrier is almost the same as that of an oil carrier, with the cargo tanks forward of the accommodation.
Ballast water can’t be conveyed in the cargo tanks. Consequently, spaces for ballast are given by consolidating twofold hull regions, bilge, and upper wing tanks. As LPG cargo requires storage different from atmospheric conditions, the containment systems are classified into three types. Each LPG transporter is planned by any of them.