Page 455 - Subyek Teknik Mesin - Forsthoffers Best Practice Handbook for Rotating Machinery by William E Forsthoffer

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

Item Description Specified Actual Witnessed Item Description Specified Actual Witnessed
value value by value value by
7. Record the following: PDAL actuates read on
7A. Pump disch. press on PI Approx. _____ PDI
2600 14. Bleed pressure off PSL 76 kPa
7B. Oil temp. upstream on TI Less than _____ (low oil trip switch) and Falling ______
65 C observe:

7C. Oil temp. downstream on 49 C A. Annun. PALL functions
TI Read PI
7D. Cooler/filter DP on PDI Less than B. T&T valve closes
Switch transfer valve and 70 kPa _____ C. Valve rack closes
record: 15. (see Increase temporary N 2
Bank ‘A’ DP _____ Note 2) press on PDSLL (L.P.
Bank ‘B’ DP case seal low DP trip
7E. Lube press at console on ) Approx. _____ switch) and observe that:
PI 283 kPa A. Annun. PDALL 138 kPa ______
)
7F. Control press at console 1091 _____ functions. Falling
on PI kPa Read on PDI
7G. LP case on DP PDI 241 kPad _____ B. Action occurs as in 14
7H. HP case on DP PDI 241 kPad _____ above
7I. Lube press at unit on PI 124 to _____ 16. Repeat above for 138 kPa ______
138 kPa PDSLL(HP case seal low Falling
7J. Control press at unit PI 883 kPa _____ DP trip) and observe
7K. All ‘sight’ glasses show oil _____ Annun. PDALL functions
flow at specified value. Read
7L. Lube oil head tank is full e _____ PDI
) 17. Shut off aux. oil pump and ______
7M. Turbine accumulator Approx. _____
press on PI 900 kPa confirm all valves are
) Adjust as required to stable
attain 18. Time rundown of oil tank. Approx.
4"
proper values at the unit
8. Record seal oil drainer Observe level switch LSL above
level for each drainer for Tang.
one hour. actuates Annun. LAL Line ______
19. A. Disconnect main lube
Drainer A 2 fills per _____
oil pump from turbine
hour
B. Drain steam inlet line to
Drainer B _____
main lube pump turbine
Drainer C _____
C. Drain turbine
Drainer D _____
D. Confirm turbine bearing
9. Switch transfer valve from
cooling water is on
‘A’ to ‘B’ bank and
observe E. Confirm trip is reset
press fluctuation on PI 20. Open inlet valve, gradually ______
and confirm that PSL bring turbine up to speed
does not actuate. and confirm the following:
A. Rated speed (Strobe 3600
10. Bleed low side of filter 241 kPa _____
Tac) RPM
switch PD SH and confirm Rising
B. Inlet press PI 2274 kPa ______
PDAH
C. Inlet temp. TI Temp 327 C ______

actuates at specified
D. Exhaust press PI Temp 517 kPa _____
value.
E. Vibration (using metrix 0.2 in/
11. Bleed pressure off PSL 90 kPa
vibration instrument) sec.
(low oil press) and confirm Falling
@ unit annun. PAL 21. Disable governor and 4140 _____
actuatesatspecifiedvalue. check overspeed trip 3 RPM
times.
Read PI
12. Increase temporary N 2 207 kPa _____ 22. Manually trip turbine using
hand trip.
press on PDSL (L.P. case Falling
seal low DP alarm switch) 23. Check pump/turbine
alignment and couple up
and confirm
main pump.
Annun. PDAL actuates at
24. Slowly bring pump up to
specified value. Read PDI
13. Repeat above for PDSL 207 kPa _____ speed and check:
24A. Pump vibration 0.2 in/sec _____
(see (H.P. case seal low DP Falling 24B. Cavitation None _____
note 2) alarm) confirm Annun.

24C. Pump brg. temp. 165 F _____
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