Assessment OICEW-5-1F
Start fresh water generator
Assessed in EN-4231 Sea Term IV: Marine Engineering
Recommended Evaporator Start-up Procedure (TS Enterprise Specific)
Check that the following valves are open:
- Brine pump overboard
- Chemical feed pump discharge
- Feed heater attemporator supply
- Sea water heater vent to drain regulator
- Sea water heater drain to bilge
- Air ejector condensers drain to bilge
- Distillate pump sealing line
- Distillate pump discharge valve
- Distillate discharge to distribution manifold
- Inlet valve to reserve feed or potable tank
- Sea water suction valve to sea water supply
Check that the following valves are closed:
- Air ejector condenser drain to ADT
- Sea water feed heater drain to auxiliary condenser
- Sea water feed regulating valves to 1st effect/Brine pump discharge
Start:
- Sea water feed pump and throttle inlet to 1st effect
- Chemical feed pump (insure proper level in tank)
- Brine pump and maintain level in 2nd effect hotwell
Open:
- Steam supply to air ejectors
- Steam supply to feed heaters (auxiliary exhaust or L.P. bleed)
- Feed heat attemporator root valve from condensate system
Turn on:
Salinity panel (insure 3 way dump valve is tripped to bilge)
Monitor:
- Feed heater shell temperature between 185-205° F.
- Sea water feed temperature between 165-170° F.
Start:
Distillate pump, and regulate level by throttling discharge valve
Line up:
- 3-way trip valve to proper tanks when salinity is less than .25 gpg
- Secure air ejector condenser drain to bilge and direct drains to ADT
- Secure sea water feed heater drain to bilge and direct drains to the auxiliary condenser
Condition
Using an approved simulator, in the laboratory, or aboard ship and given access to a fresh water generator.
Performance Requirements
| Behavior | Standard |
|---|---|
| The student will: | During assessment, the student shall, at a minimum: |
|
Identify the valves and pumps associated with the freshwater generator |
identify:
|
|
Start the freshwater generator |
follow the ship specific evaporator starting procedure provided during training |
|
Line up the discharge to meet operational requirements |
Before proceeding:
|
|
Operate the freshwater generator until operations stabilize |
Check:
|
Supports Table A-III/1 officers in charge of an engineering watch
| Competence | Knowledge, Understanding & Proficiency | Task |
|---|---|---|
|
Operate main and auxiliary machinery and associated control systems |
A4.1 Basic construction and operation principles of machinery systems, including:
|
Start fresh water generator |