E. START ACCELERATION at Ambient Cold Acceleration Rate of 120rpm, holding time in 1800rpm is?

E. START ACCELERATION at Ambient Cold Acceleration Rate of 120rpm, holding time in 3600rpm  is?

Opening of the control valve at 400 rpm is locked by TCS. Monitor % opening of CVs when turbine speed of 400 rpm is reached. Turbine is heat soaked at 400 rpm (depend on the start-up mode) • CV (A) – app. __% open • CV (B) – app. __% open

Note : Heat Soaking for 1 Minute at ____rpm?

Open SPEED LOAD/HOLD, while monitoring the vibration at trend no. 9 and 11. CRITICAL ZONE is highlighted at _____ to ____ rpm. At critical zone, Speed Load HOLD could NOT be held. Turbine should be increased steadily throu

. The operator can manually select the “_____” PB to hold the present turbine speed/load.

Turbine vibration at 1800rpm heat soaking still ____. This is normal. And when the turbine accelerates from 1800rpm to 3600rpm, vibration of the turbine decreases.

Program automatically hold the turbine speed/load under ff. Turbine states:

After 1800rpm elapsed time. Check HP first stage inner wall metal temp >____C

After 1800rpm elapsed time. Check the shell expansion if ____mm

Check bearing oil temperature: Allow oil temperature of the bearings to increase with speed. Check if oil temperature of the bearings reached at least ____°C until synchronized. Make sure that the set point of turbine lube oil temperature is ____°C at rated speed. Normal operating oil inlet temperature is specified in limitation items of steam turbine operation in Section

When the step satisfies “criteria d”, the control program correspondingly finishes the present step (e.g. “HP turbine warming”) execution. Wait for ___ sec timer after heat soak elapsed in order to clear the criteria D.

G. SYNCHRONIZATION-Verify the following before synchronizing: LP Turbine Exhaust Hood not C?

Verify if the space heater both for Gen and AC Exciter was open after 52G ____

Synchro scope ____direction – generator output voltage/frequency > grid voltage/frequency

Lower difference in voltage and frequency will be observed by slow rotation of the synchro scope to the clockwise direction. At ___ o’ clock position, 52G will be closed (unit synch) which supply initial load and during ats, gen. Initial load automatically set the initial load base on the start-up mode of the steam turbine.

H. INITIAL LOAD. -Ambient cold – 4.5 mw, ___ minutes holding time

H. INITIAL LOAD. - HOT  – ___mw,  noholding time

Maintain the initial load until the LP turbine exhaust hood cools down below ___C. Check the LP turbine exhaust hood temperatures.

Increase the load by rate of ____/min until HP & LP bypass valve is fully closed or reaches to 20 MW. Within this operation, intercept valves are fully opened and CVs are opened to control the turbine load.

Load rate: At 45MW and above and 3 hours = ___/ min

At load = ___ OR HPBV is fully closed, verify if Transfer Operation (T/R) is completed.

. Manually increase the target load as per boiler side instruction until 45 MW is reached. NOTE: Do NOT decrease load until 45 MW is reached as it may cause the CVs to fully close. MINIMUM load should be maintained at ____ % load

WAIT for ACTUAL LOAD to reach ___MW before selecting NORMAL OPERATION. 

Monitor thermal stress. Refer to appendices. After selecting NORMAL OPERATION, there is a Time Delay (TD) of ____ minutes before thermal stress limitation changes from its starting mode to normal/stop mode. Thermal Stress Condition for Different Start Up and Normal Condition

Set target load as per boiler instruction until 90 MW is reached.

Note: >90MW we can set ___ question if 75MW)