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Chain conveyor troubleshoot guide

  Problem Identification & Corrective Action Sl No. Problem Potential Cause Solution 1 Chain rises off from sprocket 1.Excess chain slack. 2.Excess wear at the bases of sprocket teeth. 3.Excess chain extension. 4.Foreign material stuck to the bases of sprocket teeth. 5.Reverse rotation of conveyor 6.Uneven chain tightening of chain 1.Adjust the amount of slack equally at both sides. 2.Carryout hard facing of the sprockets 3.Replace the elongated chain parts. 4.Remove the foreign material from the bases of the teeth. 5.Avoid reverse rotation of the conveyor when chain tightened is uneven 2 Chain separates poorly from the sprocket. 1.Sprocket misalignment. 2.Excess chain slack. 3.Excess wear at the bases of sprocket teeth. 4.Uneven chain tightening of chain 1-Adjust alignment. 2-Adjust the amount of slack.

Questions & Answers on Boiler feed pumps design , operation & maintenance

    DESIGN DATA FOR BOILER FEED PUMPS   Design data from site: Ø    Type of liquid handled and its maximum & minimum temperatures Ø    Water qualities like pH & Hardness Ø    Water Kinematic Viscosity (cst) Ø    Specific gravity of water at operating temperature Ø    Net positive suction head required (NPSHR)& available (NPSHA) Ø    Boiler capacity & operating pressure Ø    Maximum & operating blow down rate of Boiler Ø    Height of Steam drum Ø    Height of Deaerator (Water inlet source) Ø    Pressure drop in Economiser Ø    No.of valves used in feed water discharge line & corresponding pressure drop as per standard. Ø    Maximum & minimum suction pressure available at pump suction Ø    Type of cooling water & its maximum flow available for bearings cooling   Pump Design Data: Ø    Rated flow (M3/hr) Ø    Rated head (meters) Ø    Nominal speed & Effective speed (RPM) (NS > ES) Ø    NPSHR (meter) Ø    Pump

Qualification,roles & responsibilities of power plant manager

    Qualification: BE or Diploma with BOE Experience: 10 to 15 years Requisite characters & Qualification: 1-He should have thorough knowledge of power plant operation, maintenance & troubleshooting. 2-He should have experience in minimum 3-4 power plants 3-He should have good communication skills 4-He should have good documentation skills 5-Power plant manager should have thorough knowledge in Operation & maintenance activities 6-He should have good soft skills 7-Should have good leadership & Ownership qualities 8-Should have patience & ability to listen his subordinates 9-Should look more on man & machine safety rather than generation & performance 10-Should conduct or arrange trainings among various departments 11-Should handle all situations calmly with patience 12-Should have ability to implement innovative ideas 13-Should have well versed with legal & statutory norms related to Boilers & power plant 14-Should hav

Objective & Viva Questions & Answers for preparation of Boiler operation Engineer (BOE) exam & Boiler Interview

1-Why Boiler is considered as explosive equipment / system? Boiler involves the generation of steam at higher pressure & temperature upon release of this into atmosphere could cause disasters. 2-How do you specify the Boilers? Boilers are specified by their operating pressure, temperature, steam generating capacity & even by heating surface. 3-What are the various circuits involved in Boilers? Water circuit, Steam circuit, air circuit & flue gas circuit 4-Write down the various energy used / generated in power plants? Chemical energy (fuel) Thermal energy (Heat present in flue gases & steam) Kinetic energy (rotation of Turbine rotor), Mechanical energy (shaft power on Turbine) Electrical energy (In generators). 5-Why steam, is generated at high pressure & temperature? High pressure & temperatures steam is having more heat content & also has more potential to do work. 6-At what pressure do you carryout Hydraulic test on Boilers?