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This Concept Map, created with IHMC CmapTools, has information related to: One Boiler in Operation and Auxiliary Plant Operation 2, Allow the fuel temperature to rise to approximately 90 degrees. Purge the boiler furnace. When the purge sequence is completed, flash the boiler and adjust the air and fuel to the minimum for good combustion. (Note: The length of time the boiler has been out of operation governs the amount of time to allow for raising steam. The longer the unit has been off line, the greater the number of flashes and soaks should be allowed, before continuous firing.) Slowly Raise the steam pressure. At approximately 100-150kPa and with steam emitting from the steam drum vent, close the vent valve, It is required to close various drains to maintain good drainage without excessive water loss. Next Isolate the auxiliary feed line to normal condition and line up the main feed line from the main feed pump. Maintain water level control on manual., All drains from the main condenser sea water pipes are closed. Start the main SW circulating pump to the main condenser, ensuring all valves on the system are open. Proceed to Check all main turbine LO system lines are satisfactory, with the LO cooler drain valves closed. Ensure that the level in the main sump is correct. Start one main LO pump and allow the system to circulate. Check all sight glasses on bearings and gearing for oil flow. Ensure the LO gravity tank is overflowing., Close all drains and vents. Ensure that the IAS has normal control of combustion and level control, and the firing ramp has reset. The plant is now operating with two boilers, one turbine generator and one main feed pump, with exhausts and dumps to the auxiliary condenser. Ensure All drains from the main condenser sea water pipes are closed. Start the main SW circulating pump to the main condenser, ensuring all valves on the system are open., The line drains to the in-use main feed pump and turbine generator are open before opening the superheater valves. When the superheated temperature approaches the in-use boiler, Slowly open the superheater system stop valves. After that Close all drains and vents. Ensure that the IAS has normal control of combustion and level control, and the firing ramp has reset. The plant is now operating with two boilers, one turbine generator and one main feed pump, with exhausts and dumps to the auxiliary condenser., Open up the desuperheated system main valve bypass valve. Allow the pressure to increase to that of the in-use boiler and float the boiler on-line by opening the main valve and closing the drains and the bypass valve. Ensure The line drains to the in-use main feed pump and turbine generator are open before opening the superheater valves. When the superheated temperature approaches the in-use boiler, Slowly open the superheater system stop valves., Check all main turbine LO system lines are satisfactory, with the LO cooler drain valves closed. Ensure that the level in the main sump is correct. Start one main LO pump and allow the system to circulate. Check all sight glasses on bearings and gearing for oil flow. Ensure the LO gravity tank is overflowing. Proceed to Start the stern tube and shaft seal LO system., Prepare LO system Followed by Start the Main Turbine turing gear, Isolate the auxiliary feed line to normal condition and line up the main feed line from the main feed pump. Maintain water level control on manual. At approximately 4.9MPa Open up the desuperheated system main valve bypass valve. Allow the pressure to increase to that of the in-use boiler and float the boiler on-line by opening the main valve and closing the drains and the bypass valve., Raise the steam pressure. At approximately 100-150kPa and with steam emitting from the steam drum vent, close the vent valve Continue to raise the steam pressure It is required to close various drains to maintain good drainage without excessive water loss.