| ANALYSIS OF FORCED OUTAGES - STPS SARNI 2009-10 | |||||||
| JULY | |||||||
| S.N. | DETAILS | DATE OF SHUTDOWN | DATE OF SYNCHRONISATION | PERIOD IN HR:MIN | MU LOST | REASON | CORRECTIVE ACTION TAKEN |
| PLANNED | |||||||
| 1 | UNIT-1 | 01.07.2009 | 05.07.2009 | 115:55 | 7.25 | A.O.H. | |
| UNIT-3 | 15.07.2009 | 10.08.2009 | 631:55 | 39.49 | A.O.H. | ||
| FORCED | |||||||
| UNIT-1 | 19.07.2009 | 22.07.2009 | 82:14 | 5.14 | Boiler Tube Leakage | Getting normal parameters, Unit synchronised. | |
| 2 | UNIT-2 | 01.07.2009 | 03.07.2009 | 36:19 | 2.27 | Turbine Oil Leakage | After attending leakage, Unit synchronised. |
| 30.07.2009 | 31.07.2009 | 27:31 | 1.72 | Condenser Hardness | Getting normal parameters, Unit synchronised. | ||
| 3 | UNIT-4 | 02.07.2009 | 02.07.2009 | 0:25 | 0.03 | Main Steam Temp.Low | Getting normal parameters, Unit synchronised. |
| 07.07.2009 | 09.07.2009 | 44:58 | 2.81 | Water Wall Tube Leakage | Tube Leakage attended & Unit synch. | ||
| 14.07.2009 | 15.07.2009 | 20:06 | 1.26 | Economiser Tube Leakage | Tube Leakage attended & Unit synch. | ||
| 4 | UNIT-5 | 01.07.2009 | 02.07.2009 | 28:00 | 1.75 | Low Vaccum | Getting normal parameters, Unit synchronised. |
| 12.07.2009 | 13.07.2009 | 42:44 | 2.67 | Water Wall Tube Leakage | Tube Leakage attended & Unit synch. | ||
| 14.07.2009 | 14.07.2009 | 1:13 | 0.08 | Low Vaccum | Getting normal parameters, Unit synchronised. | ||
| 5 | UNIT-6 | 01.07.2009 | 02.07.2009 | 40:15 | 8.05 | Low Vaccum | Getting normal parameters, Unit synchronised. |
| 02.07.2009 | 02.07.2009 | 00:40 | 0.13 | Low Vaccum | Getting normal parameters, Unit synchronised. | ||
| 02.07.2009 | 06.07.2009 | 90:35 | 18.12 | Low Vaccum | Getting normal parameters, Unit synchronised. | ||
| 12.07.2009 | 12.07.2009 | 04:10 | 0.83 | Low Vaccum | Getting normal parameters, Unit synchronised. | ||
| 13.07.2009 | 13.07.2009 | 03:15 | 0.65 | Excitation Failure | Getting normal parameters, Unit synchronised. | ||
| 28.07.2009 | 29.07.2009 | 32:40 | 6.53 | Replacement of Thyrestor No. 1 | After attending fault, Unit synchronised. | ||
| 6 | UNIT-7 | 01.07.2009 | 01.07.2009 | 0:20 | 0.07 | Flame Failure | Getting normal parameters, Unit synchronised. |
| 01.07.2009 | 04.07.2009 | 74:10 | 15.58 | Low Vaccum | Getting normal parameters, Unit synchronised. | ||
| 15.07.2009 | 15.07.2009 | 1:00 | 0.21 | Furnace Pressure High | Getting normal parameters, Unit synchronised. | ||
| 15.07.2009 | 15.07.2009 | 0:15 | 0.05 | Furnace Pressure High | Getting normal parameters, Unit synchronised. | ||
| 15.07.2009 | 15.07.2009 | 0:35 | 0.12 | Low Vaccum | Getting normal parameters, Unit synchronised. | ||
| 17.07.2009 | 17.07.2009 | 01:10 | 0.25 | Furnace Pressure High | Getting normal parameters, Unit synchronised. | ||
| 30.07.2009 | 31.07.2009 | 01:50 | 0.39 | UAT 7B Winding Temp High | Getting normal parameters, Unit synchronised. | ||
| 7 | UNIT-8 | 13.07.2009 | 13.07.2009 | 01:12 | 0.25 | Low Vaccum | Getting normal parameters, Unit synchronised. |
| 14.07.2009 | 14.07.2009 | 06:48 | 1.43 | Steam Temp low | Getting normal parameters, Unit synchronised. | ||
| 15.07.2009 | 15.07.2009 | 02:37 | 0.55 | Boiler MCC Earth Fault | Getting normal parameters, Unit synchronised. | ||
| 17.07.2009 | 19.07.2009 | 48:12 | 10.12 | Reheater Tube Leakage | Tube Leakage attended & Unit synch. | ||
| 22.07.2009 | 22.07.2009 | 02:28 | 0.52 | Excitation Transformer Over Current | Getting normal parameters, Unit synchronised. | ||
| 8 | UNIT-9 | 01.07.2009 | 27.07.2009 | 639:15 | 134.24 | C.O.H. | |
| 29.07.2009 | 29.07.2009 | 02:25 | 0.51 | Excitation Transformer Over Current | Getting normal parameters, Unit synchronised. | ||
| TOTAL | 216.33 | ||||||
| AUGUST | |||||||
| S.N. | DETAILS | DATE OF SHUTDOWN | DATE OF SYNCHRONISATION | PERIOD IN HR:MIN | MU LOST | REASON | CORRECTIVE ACTION TAKEN |
| PLANNED | |||||||
| 3 | UNIT-3 | 01.08.2009 | 10.08.2009 | 233:20 | 14.58 | A.O.H. | |
| FORCED | |||||||
| 1 | UNIT-1 | 19.08.2009 | 19.08.2009 | 00:26 | 0.03 | TST Low Vaccum | Getting normal parameters, Unit synchronised. |
| 20.08.2009 | 20.08.2009 | 00:23 | 0.02 | TST Low Vaccum | Getting normal parameters, Unit synchronised. | ||
| 2 | UNIT-2 | 01.08.2009 | 02.08.2009 | 26:49 | 1.68 | ID Fan 2A high vibration | Getting normal parameters, Unit synchronised. |
| 05.08.2009 | 05.08.2009 | 02:08 | 0.13 | TST Furnace Oil Pr. Low | Getting normal parameters, Unit synchronised. | ||
| 22.08.2009 | 24.08.2009 | 35:50 | 2.24 | 3.3 KV dead at time of IDF 2B | Getting normal parameters, Unit synchronised. | ||
| 3 | UNIT-3 | 26.08.2009 | 28.08.2009 | 45:28 | 2.84 | Sec. S/H Tube Leakage | Tube Cuts & replaced. |
| 4 | UNIT-4 | 23.08.2009 | 26.08.2009 | 60:20 | 3.77 | Economiser Tube Lealage | Tube Cuts & replaced. |
| 5 | UNIT-5 | 14.08.2009 | 14.08.2009 | 02:35 | 0.16 | TST main feed pipe line valve pressure low | Getting normal parameters, Unit synchronised. |
| 28.08.2009 | 31.08.2009 | 53:55 | 3.37 | Condenser Tube Leakage | Tube Cuts & replaced. | ||
| 6 | UNIT-6 | 29.08.2009 | 29.08.2009 | 01:05 | 0.22 | Furnace Pressure High | Getting normal parameters, Unit synchronised. |
| 7 | UNIT-7 | 02.08.2009 | 02.08.2009 | 00:25 | 0.09 | Furnace Draught High | Getting normal parameters, Unit synchronised. |
| 02.08.2009 | 02.08.2009 | 00:15 | 0.05 | Flame Failure | Getting normal parameters, Unit synchronised. | ||
| 04.08.2009 | 04.08.2009 | 04:00 | 0.84 | Air Heater 7B Tripped | Getting normal parameters, Unit synchronised. | ||
| 05.08.2009 | 05.08.2009 | 00:15 | 0.05 | Flame Failure | Getting normal parameters, Unit synchronised. | ||
| 16.08.2009 | 16.08.2009 | 00:20 | 0.07 | Flame Failure | Getting normal parameters, Unit synchronised. | ||
| 19.08.2009 | 21.08.2009 | 48:15 | 10.13 | Water Wall Tube Leakage | Tube Cuts & replaced. | ||
| 27.08.2009 | 27.08.2009 | 01:10 | 0.25 | Generator Earth Fault | Fault attended. | ||
| 8 | UNIT-8 | 25.08.2009 | 27.08.2009 | 31:00 | 6.51 | Economiser Tube Lealage | Tube Cuts & replaced. |
| 27.08.2009 | 27.08.2009 | 02:45 | 0.58 | PA Fan 8A foundation bolt rep. | Problem attended | ||
| 9 | UNIT-9 | 27.08.2009 | 27.08.2009 | 01:10 | 0.25 | Generator Earth Fault | Fault attended. |
| TOTAL | 33.27 | ||||||
| SEPTEMBER | |||||||
| S.N. | DETAILS | DATE OF SHUTDOWN | DATE OF SYNCHRONISATION | PERIOD IN HR:MIN | MU LOST | REASON | CORRECTIVE ACTION TAKEN |
| PLANNED | |||||||
| 1 | UNIT-2 | 11.09.09 | A.O.H. | ||||
| 2 | UNIT-7 | 07.09.09 | 29.09.09 | A.O.H. | |||
| FORCED | |||||||
| 1 | UNIT-1 | 04.09.2009 | 06.09.2009 | 53:12 | 3.33 | Boiler & Air Heater maint. Work | After maint. Work, unit synchronised. |
| 2 | UNIT-3 | 09.09.2009 | 11.09.2009 | 39:51 | 2.49 | TST operated due to arrestor blast | Problem Attended, Unit synchronised. |
| 14.09.2009 | 16.09.2009 | 33:41 | 2.11 | Boiler Tube Leakage | Tube Cuts & replaced. | ||
| 3 | UNIT-4 | 09.09.2009 | 11.09.2009 | 47:02 | 2.94 | Water Wall Tube Leakage | Tube Cuts & replaced. |
| 4 | UNIT-5 | 05.09.2009 | 05.09.2009 | 00:25 | 0.03 | Low Vaccum | Problem Attended |
| 19.09.2009 | 20.092009 | 21:35 | 1.35 | Boiler Tube Leakage | Tube Cuts & replaced. | ||
| 5 | UNIT-6 | 05.09.2009 | 07.09.2009 | 40:00 | 8.00 | Water Wall Tube Leakage | Tube Cuts & replaced. |
| 6 | UNIT-8 | 09.09.2009 | 09.09.2009 | 04:35 | 0.96 | Air Heater 8A Motor tripped | Problem attended |
| 30.09.2009 | 30.09.2009 | 09:35 | 2.01 | Air Heater 8A Motor tripped | Problem attended | ||
| 7 | UNIT-9 | 05.09.2009 | 07.09.2009 | 57:55 | 12.16 | Economiser Tube Lealage | Tube Cuts & replaced. |
| TOTAL | 35.38 | ||||||