MMA Assessment OICEW-5-1B

Using an approved simulator, in the laboratory, or aboard ship and given access to a refrigeration system that has been secured.

Behavior	Standard
The student will:	During assessment, the student shall, at a minimum:
Identify the valves and equipment associated with the refrigeration unit	Identify: compressor suction valve compressor discharge valve cooling water supply thermal expansion valve solenoid valve
Check compressor lubrication	Verify visible oil level
Check refrigerant level	Verify visible receiver level
Line-up refrigeration unit	Line up cooling water supply LIne up refrigerant circuit Leave compressor suction valve closed
Start associated equipment	Energize box solenoids Start diffuser fans, brine pumps, etc. as required
Start the refrigeration compressor	Gradually open compressor suction valve Verify: circulation water is flowing oil pressure rises upon starting oil level remains visible
Operate the refrigeration unit until conditions stabilize	Monitor: suction pressure discharge pressure box temperatures operation of pressure switches

Assessed in EN‑3213 Refrigeration.

Note: Not all steps are possible on all refrigeration systems.

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