CRE TM ATS Reviewer #3 (Acceleration to Load Up)

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