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Slide 1: CONDITION MONITORING IN THERMAL POWER PLANT SHIVAJI CHOUDHURY
Slide 2: OBJECTIVE OF CONDITION MONITORING • TO IDENTIFY CHANGES IN CONDITION OF MACHINE THAT WILL INDICATE SOME POTENTIAL FAILURE. • DIAGNOSIS OF FAULT • PREDICTION OF FAULT • TO AVOID FURTHER DAMAGES • TO PLAN BETTER SPARE MANAGEMENT • OUTAGE OF EQUIPMENT CAN BE BETTER PLANNED. • ENHANCING THE MACHINE EDURANCE LIMIT. • LESS DOWN TIME AND MORE PRODUCTIVITY • GREATER SAFETY TO WORK FORCE.
Slide 3: MONITORING TECHNIQUE • • • • • • • VIBRATION MONITORING. LUBRICANT ANALYSIS. NOISE ANALYSIS. WEAR DEBRIS ANALYSIS. THERMOGRAGHY. D G A. NDT ULTRASONIC
Slide 4: VIBRATION ANALYSIS • • • • • • TURBINE. GENERATOR. PUMP. MOTOR. FAN. COMPRESSOR.
Slide 5: VIBRATION DIAGNOSIS • SHAFT AND ROTORMISALIGNMENTS UNBALANCE , BENT, • BEARING –DAMAGES,,DISTORTION,LOSS OF LUBRICANT. • GEAR –TOOTH MESHING FAULT,WORN TEETH,MISALIGNMENT • MECHANICAL LOOSNESS
Slide 6: LUB OIL ANALYSIS • • • • • MOISTURE MECHANICAL IMPURIRTIES DENSITY VISCOCITY ACIDITY
Slide 7: LUB OIL DIAGNOSIS • DEGRADATION OF LUB OIL • IMPURITIES IN LUB OIL
Slide 8: WEAR DEBRIS ANALYSIS & DIAGNOSIS • • • • WEAR DEBRIS CARRIED OUT FOR WEAR PARTICLE CONCENTRATION IN OIL CONDITION OF LUB OIL OUTSIDE CONTENMATION TO DETERMINE TO WEAR CONDITION OF MACHINE 1. 2. 3. 4. NORMAL RUBBING BEARING FAILURE CONDITION OF GEAR CUTTING OF METAL
Slide 9: THERMOVISION MONITORING • IDENTIFICATION OF HOT SPOT . • USED FOR MONITORING OF SWITCHYARD EQUIPMENT. • ROUTINE MONITORING OF MOTOR/PUMP. • MONITORING OF DRAIN PIPES LINES TO DETECT CHOKING OF PIPE LINES. • TO MONITOR OF CONDITION OF INSULATION ON PIPE AND EQUIPMENT.
Slide 10: DISSOLVE GAS ANALYSIS • FOR ALL TRANSFORMERS. • DIELECTRIC STRENGTH OF TRANSFORMER OIL. • MOISTURE,DENSITY,COLOUR OF TRANSFORMER OIL. • DISSOLVE GAS ANALYSIS IN TRANSFORMER OIL-TO DIAGNOSIS OF FAULT.
Slide 11: TRANSFORMER OIL DIAGNOSIS • CO AND CO2 IN OIL—THERMALCONDITION INVOLVING PAPER • METHANE,ETHANE,ETHYLENE AND SMALL AMOUNT OF ACETYLENE IN OIL - THERMAL CONDITION INVOLVING THE OIL • HYDROGEN,METHA AND SMALL AMOUNT OF ACETYLENE AND ETHANE IN OIL--PARTIAL DISCHARGE • HYDROGEN,ACETYIENE AND ETHELENE IN OILSUSTAINED ARCING-SUSTAINED ARCING
Slide 12: VIBRATION MEASUREMENT MONTHLY SCHEDULE FOR CRITICAL EQUIPMENTS S N Equipment 1 2 3 4 5 6 7 8 9 ID FANS FD FANS PA FANS MILL GEAR BOX SEAL AIR FANS BFP CEP CW PUMPS OTHER PUMPS/ FANS 1ST WEEK Y Y Y Y Y Y Y Y Y Y Y Y 2ND WEEK 3RD WEEK 4TH WEEK
Slide 13: OIL ANALYSIS MONTHLY SCHEDULE FOR CRITICAL EQUIPMENTS S N EQUIPMENTS 1 MOT OIL ID FAN LUB OIL MILL LUB OIL BFP LUB OIL 1ST WEEK 2ND WEEK 3RD WEEK 4TH WEEK Y Y Y Y Y 2 3 4 5 Y Y
Slide 14: DISSOLVED GAS ANALYSIS YEARLY SCHEDULE FOR CRITICAL TRANSFORMERS S.N 1 2 3 EQUIPMENT SIX MONTHLY YEARLY GENERATOR TRANSFORMER Y Y Y UNIT AUX TRANSFORMER STATION AND OTHER TRANSFORMER
Slide 15: HOT SPOT SURVEY THROUGH THERMOVISION CAMARA S.N EQUIPMENT SIX MONTHLY 1 SWITCH YARD AND TRANSFORMER YARD OF STATION Y
Slide 16: TEMPERATURE MEASUREMENT OF DRAIN VALVES S.N VALVES DRAIN VALVES CLOSED CONTROL VALVE ONCE IN THREE MONTH 1 2 Y Y • Measure temperature of all drain valves with help of contact less pyrometer, to check valves are passing or not.
Slide 17: THANKYOU