Page 456 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

Lube, Seal and Control Oil System Best Practices Best Practice 7 .26

Item Description Specified Actual Witnessed Item Description Specified Actual Witnessed
value value by value value by
25. Adjust Governor so all C. Oil pump turbine does
valves not hunt (speed remains
are as noted in step 7. stable)
Record speed RPM. _____ 30. Stop aux. pump motor
26. Block in pump using and observe:
pump A. All control valves _____
discharge valve. Set relief remain stable.
valve PSV. Valve chatter B. Min. press. spike on PI 90 kPa
is not acceptable. _____ lube
27. With turbine operating at PI Control T&T valve _____
speed noted in step 25 does not _____
and disch. block valve trip
open, manually trip PDI LP Case DP 207 kPa _____
turbine and observe: PDI LP Case DP 207 kPa _____
A. Aux. pump starts. _____ 31. With turbine operating. _____
B. Min. press spike on PI Bleed press, from PSL
lube 90 kPa and observe aux. pump
PI Control T&T valve starts and that all valves
does not _____ remain stable.
close 32. Having satisfactorily _____
PDI LP Case DP seal 207 kPa completed all items
PDI HP Case DP seal 207 kPa _____ above, secure both aux.
C. Alarm and trip switches and main pump and sign
connected with lube and off as being acceptable
seal for operation.
1. NOTE At this point,
oil are not actuated. _____
D. All valves are stable. _____ elect one driver and
continue to operate the
28. Restart pump turbine and _____
dump control oil pressure console 24 hours a day.
NOTE 1 RVs will continuously
using hand valve at
pass a small stream of oil.
turbine. Observe that no
Actual setting will be that
alarm or trip lights are
pressure at which stream
actuated and that all
volume increases.
valves remain stable.
Observe by un-bolting
29. Start aux. oil pump with
FLGS at reservoir.
turbine operating and Accumulation value is
observe: with pump discharge
A. RVs do not lift
block fully closed.
B. All control valves are _____
stable NOTE 2 Block out gas signal to
_____ diff. control valve during
this step.
(Continued)

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