MMA Assessment OICEW-8-2A

Centrifugal pump maintenance (mechanical seal)

Condition

Aboard ship or in workshop, given a centrifugal pump and other equipment, manuals and specifications needed to complete the task.

Performance requirement

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

Secure and Lock-out the split case centrifugal pump

Disassemble the pump

follow disassembly procedure in the laboratory manual

Inspect all parts for wear and deterioration

Check the following:

  • packing, or seals
  • gasket
  • impeller wear
  • shaft bearings

Repair centrifugal pump

  • replace mechanical seal
  • lubricate grease lubricated
  • replace seal according to procedure in the laboratory manual
  • use proper grade and amount of grease
  • replace or repair other parts as necessary to bring pump to manufacturer’s specifications

Reassemble centrifugal pump

Follow procedure in laboratory manual

Adjust seals/gaskets as necessary

Test centrifugal pump

Operate under load and inspect for abnormalities

Location

Assessed in EN‑2111 Auxiliary Machinery II.

References

STCW Knowledge, Understanding and Proficiency

  1. OICEW-C2
  2. OICEW-C2.3
  3. RFPEW-A1.3
  4. ABE-A8.1

NVIC Tasks

  1. NVIC 07-14 Task 1.2.B Lubricate a grease-lubricated bearing
  2. NVIC 17-14 Task 9.1.A Overhaul a centrifugal pump
  3. NVIC 17-14 Task 9.1.B Tighten pump packing
  4. NVIC 18-14 Task 5.1.B Operation of centrifugal and positive displacement pumps

Lab Manual

Auxiliary Machinery II Laboratory Manual

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