MMA Assessment OICEW-7E4A

Disassemble and reassemble an electric motor

Condition

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

Performance requirement

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

Disassemble a squirrel cage induction motor
  • make or note match marks
  • remove end bells
  • remove rotor

Test insulation resistance and stator winding continuity
  • use 60 second insulation resistance test
  • discuss meaning of results

Reassemble the motor
  • ensure match marks align during reassembly
  • ensure rotor turns freely after reassembly

Location

Assessed in EN‑4231 Sea Term IV: Marine Engineering.

References

STCW Knowledge, Understanding and Proficiency

  1. OICEW-B2
  2. OICEW-B2.1

NVIC Tasks

  1. NVIC 17-14 Task 7.1.A Conduct insulation resistance test
  2. NVIC 17-14 Task 7.4.A Disassemble and reassemble an electric motor

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