In an approved simulator or aboard a ship in port or at anchor, given access to a main boiler.

Performance requirement

Behavior Standard
The student will: During assessment, the student shall, at a minimum:

Secure boiler

Reduce load on boiler

Place combustion control on manual

Secure fires

Open superheater vents and drains

Secure forced draft fan

Monitor boiler until stable

Maintain water level in drum

Open drum vent before pressure falls to 0 psi


Assessed in EN‑3131 Steam Generators.


  1. Table A-III/1 OICEW-A4.1
  2. NVIC 17-14 Task 4.1.A

See the Assessment Guidelines for additional specifications of behavior and standards.