In an approved simulator, laboratory, or aboard a ship, given access to a boiler water sample and test equipment.

Performance requirement

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

Describe the purpose of boiler water testing

Describes the consequences of failure to maintain boiler water quality

Test the boiler water

Conduct the following boiler water tests:

  • amerzine test
  • phosphate test
  • phenolphthalein alkalinity test
  • total alkalinity test
  • chloride test
  • conductivity test

Conduct tests in accordance with vendor’s recommendations

Evaluate the test results

Compare results to operational limits

Recommend corrective actions required, including:

  • bottom blow
  • continuous blow
  • chemical dosing as per vendor’s recommendations

Simulate treating the boiler as required

Describe safety and environmental hazards and safe handling precautions

Describe expected results


Assessed in EN‑3131 Steam Generators.


  1. Table A-III/1 OICEW-A4.3
  2. NVIC 17-14 Task 4.2.C

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