Spreadsheet: mary_fischer__25429__Desert Sky Log May '02
Sheet: WTG Down

DESERT SKY
SIGNIFICANT WTG DOWN TIME
Month: | May '02 |  |  |  | Reason: F=fault, U=unscheduled maint. S= scheduled maint. O= other.
WTG # | Date off | Time off | Date on | Time on | Hrs. | Reason | Comments
4 | 2002-05-01 00:00:00 | 0000 | 2002-05-01 00:00:00 | 1200 | 12 | F | Repaired broken gearbox oil pump mount
105 | 2002-05-01 00:00:00 | 230 | 2002-05-01 00:00:00 | 1530 | 15 | F | Safety chain
117 | 2002-05-01 00:00:00 | 0000 | 2002-05-01 00:00:00 | 1300 | 13 | F | IGBT overload
68 | 2002-05-01 00:00:00 | 0000 | 2002-05-01 00:00:00 | 1400 | 14 | F | Lost commissioning due to faulty Moeller DIL-EEM relay
67 | 2002-05-01 00:00:00 | 1730 | 2002-05-02 00:00:00 | 600 | 12.5 | F | Hub key fell off and hit e-stop
61 | 2002-05-11 00:00:00 | 2000 | 2002-05-12 00:00:00 | 1030 | 14.5 | F | IGBT overload caused by latched-up crowbar thyristor.
102 | 2002-05-04 00:00:00 | 1900 | 2002-05-06 00:00:00 | 1200 | 41 | F | Multiple hub faults caused by slip ring wiring that was stretched and cut.  Repaired wiring and replaced fuse.
92 | 2002-05-10 00:00:00 | 1115 | 2002-05-11 00:00:00 | 1745 | 30.5 | F | Replaced broken sight glass in hub
56 | 2002-05-04 00:00:00 | 0845 | 2002-05-10 00:00:00 | 1000 | 145.25 | F | Axis 3 pitch encoder was bad.  We had to wait for a new encoder.
69 | 2002-05-10 00:00:00 | 2030 | 2002-05-11 00:00:00 | 1300 | 16.5 | F | Hydraulic unit mount broke and fluid leaked out.  Took mount from another down turbine.
108 | 2002-05-08 00:00:00 | 700 | 2002-05-31 00:00:00 | 2400 | 569 | F | Down for excessive generator vibration.  TURBINE STILL DOWN
116 | 2002-05-08 00:00:00 | 800 | 2002-05-31 00:00:00 | 2400 | 568 | F | Down for excessive generator vibration.  TURBINE STILL DOWN
72 | 2002-05-09 00:00:00 | 1015 | 2002-05-17 00:00:00 | 1145 | 193.5 | F | Oil pump mount broke and oil pump fell and cut oil [NAME].  Had to wait for a new hose.
120 | 2002-05-22 00:00:00 | 1600 | 2002-05-23 00:00:00 | 1645 | 24.75 | F | Rotor j-box fell off and cut wires in brush wear circuit
62 | 2002-05-22 00:00:00 | 1730 | 2002-05-23 00:00:00 | 1445 | 21.25 | F | Replaced pitch encoder.  Had to wait for new encoder
28 | 2002-05-21 00:00:00 | 1345 | 2002-05-23 00:00:00 | 1300 | 47.25 | F | Replaced pitch encoder.  Had to wait for new encoder
83 | 2002-05-19 00:00:00 | 430 | 2002-05-21 00:00:00 | 830 | 52 | F | Repaired blade closeout that fell out
33 | 2002-05-24 00:00:00 | 1745 | 2002-05-25 00:00:00 | 1030 | 16.75 | F | Replaced blown CB-1 charging fuse
69 | 2002-05-28 00:00:00 | 2000 | 2002-05-29 00:00:00 | 930 | 13.5 | F | Replaced MS-3
35 | 2002-05-18 00:00:00 | 1400 | 2002-05-28 00:00:00 | 1115 | 237.5 | F | Oil pump motor was bad.  We had to wait for a new motor.
70 | 2002-05-13 00:00:00 | 1230 | 2002-05-31 00:00:00 | 2400 | 443.5 | F | Down for excessive generator vibration.  TURBINE STILL DOWN
62 | 2002-05-26 00:00:00 | 1400 | 2002-05-30 00:00:00 | 1100 | 93 | F | Rotor j-box fell off and cut wires in brush wear circuit
62 | 2002-05-22 00:00:00 | 1730 | 2002-05-23 00:00:00 | 1445 | 21.25 | F | Replaced pitch encoder.  Had to wait for new encoder
67 | 2002-05-14 00:00:00 | 0800 | 2002-05-17 00:00:00 | 1230 | 76.5 | F | WindClean painted tower.
63 | 2002-05-20 00:00:00 | 1015 | 2002-05-21 00:00:00 | 1645 | 30.5 | F | Replaced bad pitch encoder
2 | 2002-05-21 00:00:00 | 0245 | 2002-05-24 00:00:00 | 1630 | 85.75 | F | Current asymmetry problem
88 | 2002-05-21 00:00:00 | 0645 | 2002-05-24 00:00:00 | 2000 | 85.25 | F | Converter had bad choke.  Had to wait for new choke
13 | 2002-05-22 00:00:00 | 0545 | 2002-05-23 00:00:00 | 1515 | 33.5 | F | Converter had 2 bad IGBT's
72 | 2002-05-25 00:00:00 | 0900 | 2002-05-28 00:00:00 | 1330 | 76.45 | F | Replaced bad CSC SUR
56 | 2002-05-05 00:00:00 | 1415 | 2002-05-10 00:00:00 | 0930 | 91.25 | F | Replaced pitch encoder.  Had to wait for new encoder
118 | 2002-05-01 00:00:00 | 0000 | 2002-05-01 00:00:00 | 1330 | 13.5 | F | Missing commissioning.  [NAME] in SEG.
41 | 2002-05-02 00:00:00 | 1530 | 2002-05-03 00:00:00 | 1200 | 20.5 | F | Repaired broken bolts on generator rotor j-box.