During shutdown of Steam Turbine,How do we cross the
critical speed?
Answer Posted / kaizad
As soon as steam stop valves are closed there is no control on coast down speed of turbine unless vacuum break valve of condenser is opened. Normally it takes approximately 55mins to coast down from 3000rpm to 20-30rpm barring gear speed. We keep watch on all turbo visors parameters in such times
Is This Answer Correct ? | 16 Yes | 4 No |
Post New Answer View All Answers
LAPT working in alternator / generator
We have Demin Closed cooling water system with expansion tank for cooling oil system. Expansion tank having N2 bladder. Whenever N2 bladder bursts out, Closed cooling water circuit pressure drops and make-up happening, eventhough there is no leaks. And how Circuit pressure drops?
DCS marshaling Cabinet Power supply can be replace during plant running time? Answer Yes it is possible. I am talking about the controller and cards power supply modules. They are always redundant and connected through diode so that if one power supply fails the other can take the charge immediately.so it is possible to replace one of them in running plant if the other one is healthy. MY question is how switching done.
how to differentiate between "ALL fuel lost" and "All Fuel Lost" in Boiler MFT condition?
explain how the third harmonic content of the magnetising current affects transformer design
can dp type level transmitter work in under vaccum condition
im try to calculating seawater flow required for SW-FGD system. I need a guide, equation or method to do it, can some one help me! Thanks very much
what is natural frequency of turbine shaft .
can u please tell me how to calculate the concrete quantity for a under reamed pile? r=300mm,depth=3m for a cylinder and for bulb l=.750mm,width=.525
some one can tell me how residual type excitation is provided through transformers to an AC generator without any battery or PMG&excitor
operation
Looking for Bently Nevada surplus 3300/52-01-00-00 Reverse Rotation Monitor , 4 pieces.
what is the meaning of SST300 V56A in SIEMENS turbine
why is the in steam turbine axial displacement of active side thrust pad is positive and non active side thrust pad is negative.
what is restricted earth fault explain in details