OICEW Task 4.3.O

Shut down fresh water generator

MMA Method

In order to satisfy NVIC 17-14 Task 4.3.O , MMA students must:

NVIC Method

See NVIC method.

STCW Competence Knowledge, Understanding, and Proficiency

Operate main and auxiliary machinery and associated control systems

OICEW-A4.3 Preparation, operation, fault detection and necessary measures to prevent damage for the following machinery items and control systems

Auxiliary prime movers and associated systems
Condition Behavior Standard

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

the candidate plans for and shuts down the freshwater generator, describing actions as they are being performed.


Note 2 Task No. 4.3.W may be used as a substitute A candidate who does not perform this task will receive an endorsement that is limited to motor and/or gas-turbine propelled vessels without distilling plants.

The candidate:

  1. Trips three-way solenoid valve when all tanks have been topped off;

  2. Closes main heat source valve to and from distiller heating section

  3. Allows feed water flow until the distiller has cooled to ambient temperature;

  4. Secures saltwater feed pump and saltwater supply to both eductors;

  5. Closes saltwater feed pump discharge and suction valves;

  6. Opens vacuum breaker valve atop evaporator shell;

  7. Secures distillate pump motor and close distillate pump discharge valve;

  8. Logs the time that the unit is secured and the final water meter reading; and

  9. Takes proper action to prevent safety and pollution violations.