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

Performance requirement

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

Secure the leaking pipe

  • wear suitable protective equipment
  • lockout line
  • drain line to confirm that it is not pressurized

Make a temporary repair using a prefabricated repair clamp, or

  • install clamp in accordance with manufacturer’s instructions
  • not exceed maximum torque

Make a temporary repair using a soft patch

  • fill hole with wooden wedges or plugs
  • trim wedges or plugs flush with pipe
  • cover damaged area with rubber or gasket material
  • secure rubber in place with two layers of marlin or wire.

Test repaired pipe for leakage

  • apply pressure slowly
  • note any leaks
  • propose follow-up actions


Assessed in EN‑1211 Auxiliary Machinery I.


  1. Table A-III/1 OICEW-C1.4
  2. NVIC 17-14 Task 8.2.A


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