OICEW Task 4.3.M

Change over low pressure air compressor

MMA Method

In order to satisfy NVIC 17-14 Task 4.3.M , MMA students must:

NVIC Method

See NVIC method.

STCW Competence Knowledge, Understanding, and Proficiency

Operate main and auxiliary machinery and associated control systems

OICEW-A4.3 Preparation, operation, fault detection and necessary measures to prevent damage for the following machinery items and control systems

Auxiliary prime movers and associated systems
Condition Behavior Standard

On a vessel of at least 1,000 HP, on a simulator, or in a laboratory or workshop,

the candidate plans for and changes over from the on-line low pressure service air compressor to the stand-by unit, describing actions as they are being performed.


All The assessment is required for all OICEW endorsements regardless of any limitations for propulsion mode and/or vessel equipment.

The candidate:

  1. Checks the oil reservoirs and (if necessary) fills them to the proper level with the correct grade of oil;

  2. Ensures that the power is off, checks the belts for excessive sagging and ensures that they are in the proper position in the pulley wheels, and jacks the compressor over by hand, if applicable;

  3. Starts up the air compressor;

  4. Places air compressor in service and properly shuts down replaced air compressor;

  5. Drains and removes all accumulations of moisture or oil from the separators and air receivers;

  6. Tests pressure-relief devices; and

  7. Takes proper action to prevent safety and pollution violations.