Gas Measurement in Enclosed Space



This Training is prepared for providing awareness of the procedures before entry into an enclosed areas. The aim of this course is to enlighten the seafarers for measuring the tank atmosphere with appropriate devices and determine correct behavior as per the result of measurements.

Course Content

  • Definition & Dangers of Enclosed Space
  • Procedures for entry into enclosed spaces
  • Gas measuring instruments
  • Oxygen analyser
  • Interferometer / Tankscope
  • Combustible gas detector (explosimeter)
  • Multigas detector
  • Draeger Tubes
  • Operating principles, accuracy and limitations
  • Sampling lines and pumps
  • Instrument check procedures and calibration
  • Use and maintenance
  • Physical and chemical properties of petroleum cargoes carried in bulk
  • Toxicity and health hazards associated with petroleum cargoes & I.G.
  • Oxygen deficiency, Flammability
  • Purging and gas freeing procedures

Course Duration

Depending on the participants’ background and knowledge of the subject. Average time is 3 hours for CBT modules and practical exercise.

Course Requirement

A confined space is an enclosed or partially enclosed area that is big enough for a seafarer to enter. It is not designed for someone to work in regularly, but seafarers may need to enter the confined space for tasks such as inspection, cleaning, maintenance, and repair. Enclosed space entry remains one of the most hazardous areas of shipboard operations. Unless proper training, equipment, and procedures are in place, seafarers must not be allowed to enter such spaces.

  • SIRE VIQ 5.16
  • CDI 6.5.13

This course is based on the guidelines of ISGOTT chapter 8.2 & chapter 10

Additional information

Ship Type

Bulk, Chemical Tanker, Container, Gas Tanker, General Cargo, LNG, Offshore, Oil Tanker, Passenger, RORO

Target Group

Deck Management, Deck Operational, Engine Management, Engine Operational, Shorebased Personnel


Maritime, Occupational Health & Safety, Oil and Gas, Wind


English, Turkish



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