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Assessment OICEW-5-1L

Prepare main steam turbine for operation

Assessed in EN-4231 Sea Term IV: Marine Engineering

Recommended Turbine Start-up Procedure (TS Enterprise Specific)

Line up and Start Main Lube Oil System:

  1. Check that Lube Oil temperature is 90° F
  2. Check that alarm signal panel is energized
  3. Test low gravity tank alarm
  4. Test lube oil pump failure alarm
  5. Test low lube oil pressure alarm
  6. Line up selected lube oil cooler
  7. Line up motor driven lube oil pump
  8. Open lube oil fill/dump valve to lube oil gravity tank
  9. Start motor driven lube oil service pump
  10. Start lube oil standby pump in standby mode
  11. Insure lube oil pump failure alarm reading normal
  12. Insure lube oil gravity tank alarm is reading normal
  13. Insure lube oil low pressure alarm is reading normal
  14. Inspect all engine lube oil sight glasses to insure visual flow
  15. Verify lube oil flow in bull's eye
  16. Check that no leaks exist in the lube oil system

Place into Service Jacking Gear:

  1. Open all turbine casing drains
  2. Verify lubrication of bearings and gears
  3. Check all spring bearings and insure proper lube oil level
  4. Check stern tube packing gland for slight leakage and tightness
  5. Confirm no obstructions exist around propeller
  6. Request permission from bridge to start jacking gear
  7. Remove padlock and pin
  8. Rotate lever to engaged position
  9. Push pin through lever and replace padlock to secure pin
  10. Start jacking gear motor
  11. Place "Jacking Gear Engaged" sign on main throttles
  12. Record main engine thrust readings in engineroom log book

Line up and Start Main Circulating system:

  1. Open main condenser overboard valve
  2. Open suction valve to main circulating pump
  3. Start main circulating pump in low speed
  4. Vent main condenser heads

Line up and Start Main Condensate System:

  1. Open suction, vent, gage and sealing line to main condensate pump
  2. Open condensate recirculating valve one full turn
  3. Start the main condensate pump and open the discharge
  4. Monitor D.C. heater level and auxiliary exhaust pressure

Line up and Start Gland Seal System

  1. Open gland exhaust valve from engine to gland exhaust condenser
  2. Drain down and admit steam to glands using gland seal regulator bypass
  3. Place into service gland seal regulator and adjust to maintain 1/2 to 2 psig

Line up and Start Air Ejector and raise vacuum

  1. Select either port or starboard set of main air ejectors
  2. Open 1st and 2nd stage air ejector suction and discharge valves
  3. Admit steam to 2nd stage nozzle
  4. At 16-20 inches Hg apply steam to 1st stage nozzle
  5. Monitor air ejector steam pressure, adjust as necessary at regulator

Applying steam to the engine (placing into service):

Caution needs to be taken to insure gradual warmup of main steam lines and the throttle valve assembly. Prior to admitting steam to the throttle valve assembly fully open and lightly seat the ahead and astern throttle and inspect and linkage.

  1. One hour prior to receiving standby, warm up main steam line by opening bypasses on the main steam stop and bulkhead stop valves
  2. Open all throttle drains
  3. Receive permission from bridge to roll the engine
  4. Stop and disengage the Jacking Gear
  5. Remove "Jacking Gear Engaged" sign from throttles
  6. Align throttle drains to D.C. Heater
  7. Slowly open main steam and bulkhead stop valves
  8. Insure 19 nozzles configuration to HP turbine are open
  9. Open astern guarding valve
  10. Open astern throttle first and confirm engine rpms (No more than 10)
  11. Alternate ahead and astern throttle no more than 10 rpms
  12. Continue until steam line temperature to HP turbine is 500 degree F.
  13. Do not let hot rotor stand still for more than five minutes
  14. Insure all proper personnel are present for maneuvering
  15. Notify bridge that engineroom is ready to "answer all bells"
  16. Establish time of "stand-by engines" with bridge
  17. Close casing drains at first half-ahead bell

Condition

In an approved simulator or aboard a ship in port or at anchor, given access to a main steam turbine.

Performance Requirements

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

Line Up and Start main lube oil system

Verify stern tube and line shaft lube oil

Verify minimum lube oil temperature

Verify oil flow to all bearings

Verify gravity tank overflow

Place into service jacking gear

Check for propeller obstructions and obtain wheel clearance

Hang jacking gear engaged sign

Line up and Start main circulating system

Verify coolant flow

Line up and Start main condensate system

open main condensate pump vent and seal

adjust main condensate recirculating valve

monitor dc heater level

Line up and Start gland seal system

line up gland exhaust

adjust gland seal regulator to 1.5 psig

Line up and Start main air ejector and raise vacuum

Direct steam to second stage

Raise vacuum to approximately 20 inches Hg

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:

  1. marine diesel engine
  2. marine steam turbine
  3. marine gas turbine
  4. marine boiler
  5. shafting installations, including propeller
  6. other auxiliaries, including various pumps, air compressor, purifier, fresh water generator, heat exchanger, refrigeration, air-conditioning and ventilation systems
  7. steering gear
  8. automatic control systems
  9. fluid flow and characteristics of lubricating oil, fuel oil and cooling systems
  10. deck machinery

Prepare main steam turbine for operation

Published: 2016-10-28-04:00