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OUR STEAM TURBOSET IS 100 MW, EXTRACTION STEAM, H.P CASE & LOW PRESSURE WITHOUT REHEAT, SAME ROTOR, CONDENSING UNIT, THE ROTOR HAS 6 RADIAL BEARING, B1 BEFORE H.P CASE, B2, B3 AFTER IT, B4 AFTER LOW PRESSURE CASE & B5 AFTER TURNNING GEAR AND BEFORE GENERATOR B6 AFTER IT. ONE YEAR AGO WE...

sorry,sometimes when we about to open tv to run up turbine ~Steam admission-, tv open only 30 percent and stop, and failed to close even if turbine trip push button activiated, my college used to switch test selonid supply off then tv goes full open, when thy switch supply on again tv drop to 29...

yes, there is one trip valve and it does close, load drop, TV cant fully open again untill unit trip on drum levl low some times also when we are going to steam to set, trip valve only open 30% and failed to close, our practice is to swith test selonid supply off and then valve open 100% then...

EH SYSTEMhttp://files.engineering.com/getfile.aspx?folder=fda628ca-19d1-4d03-9f5b-19a257f9d2b3&file=eh.pdf

thank you byrdj >>> now test selonid is dismanteled .. seem you are very experianceed, if you have any case study relating steam turbine power plant i wish to send it over to me @ eng.ahmed00@gmail.com

pls find attached filehttp://files.engineering.com/getfile.aspx?folder=6e7c2834-466c-4a01-9bc7-cbc02d446ffc&file=???????.pdf

actually no way stop valve would open until unit trip on drum level very low.

Well, its solenoid operated, this incident happened many times in two similar units, stop valve opening fell to 30% and this behavior coincidence with load rising.

our plant is 100 mw steam turbine, h .pressure plus low pressure turbine without , some times turbine trip valve partially close during normal operation, trip valve is electohydrulic (DEH) SYSTEM, does any one encounter something like this before?

I work in steam power plant utility, it's 2*100 MW, we got a heavy oil return from oil vapour extraction system, may be 1 drum every 2 days,the config of system as follow, suction from lube oil tank, include damper then one running and one stand by fan and outlet damper then oil seperator and...