Aboard ship or in workshop, given one of the following types of valves: safety valve, steam trap, quick closing valve, drain valve or relief valve, and other equipment needed to complete the task.

Performance requirement

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

Disassemble a globe valve

Remove old packing from stuffing box

Inspect valve

Examine disk and seat

Blue-in valve disk and seat

Repair valve as necessary

Machine, grind-in and bed-in valve disk and seat as required

Replace bonnet gasket

Select and install new packing

Take up on valve stuffing box gland

Reassemble valve

Prove valve leak free with hydrostatic test


Assessed in EN‑1211 Auxiliary Machinery I.


  1. Table A-III/1 OICEW-C2.3
  2. NVIC Task

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