Safety Videos

1186 - LPG - Cargo Compressor

This course provides a comprehensive guide to the essential aspects of LPG-Cargo Compressors, which are vital for the safe and efficient handling of liquefied petroleum gas on marine vessels. It covers everything from fundamental mechanical principles and regulatory compliance to practical operational guidelines and long-term maintenance strategies.

The training course focuses on the Laby (labyrinth) compressor, a specialized piece of equipment designed to handle "process gas" within the refrigeration cycle of LPG ships. Unlike standard pumps, these oil-free compressors manage both vapors and liquids to facilitate cargo transfer and reliquefaction. The course emphasizes safety protocols, mechanical integrity, and the prevention of cargo contamination.
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Course Content

After completing this training, the learner will be familiar with the following topics:
 Explain the working principle of labyrinth-style compressors and their role in the reliquefaction cycle.
 Identify and mitigate operational hazards related to flammable gases, high-voltage electricity, and rotating components.
 Execute correct start-up and shutdown procedures, including nitrogen purging and maintaining specific coolant temperatures during standstill.
 Monitor critical performance indicators, such as oil pressure and crankshaft seal leakage.
 Implement a preventive maintenance schedule and recognize the technical requirements for specialized components like SUPERBOLT piston nuts.

Course References

  • IMO IGC Code 
  • Manufacturer’s Operation and Maintenance Manual 
  • Liquified Gas Handling Principles on Ships and in Terminals (SIGTTO)
  • SIRE 2.0 - 8.4
  • TMSA 3 Element 6.3.4

Additional Information

Last Updates
Jan 2026
Language
English
Course Duration
30 Minutes
Type of Course
E-Learning Courses - with Certificate
Audio
Native
Certificate & Validity
Yes / 5 Years
Industry
Maritime
Ship Type
LPG Tanker
Target Group
Deck – Management
Deck – Operational
Engine – Management
Engine – Operational
Skill Level
Operational
Flag Approval
No
Assessment
Yes
Process
The process of course assignment to certification.
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Accesible for 365
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Your course is accessible for 365 days unless you have a score of 70 or more from the assessment. If you fail to score 70 or over within your 3 attempts, you must purchase the course to reenroll again.
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