Power Plant Guruji

  Boiler Operation Engineer Interview Question - 26 Q. Why does the boiler backfire ? Ans.  Back firing of boiler is due to: 1.Unbalanced draught 2.Reduced speed of ID fan or more speed of FD fan 3.Improper locking of fans damper (which may disturb in fan running due to air pressure) 4.Sudden trip of ID fan or closing of damper 5.High moisture fuel 6.More excess air 7.Jamming of APH Read More Boiler Interview Questions   What are the factors which affect the Natural circulation ? What is the difference between Tower type and Two pass conventional boiler? What parameters are measured during Boiler PG test ? Why the start up vent is used in Boilers? List out the potential reasons for boiler tubes failure ?  What is cold end corrosion in boiler and When it occurs ? What is the circulation number in boiler ? Most Important Steam Blowing Questions Asked In Central BOE Interview  How it is been decided that RHS or LHS safety valve of steam drum is set at higher p...

 Boiler Operation Engineer Interview Question - 25 Q. What are the causes of higher flue gas outlet temperature of boiler ?  Ans.  1.Improper Heat Transfer in Economizer, APH:  Clean Economiser coils and APH tubes regularly, maintain flue gas temperature as per manufacturer guide. 2.Accumulation of Soot on Super Heater Coils, Economizer:  Operate soot blowers regularly. 3.Burning of Higher Moisture Content Fuel:   Limit the moisture content of fuel. 4.Higher Economizer Feed Water Inlet Temperature: Reduce steam flow to HP/LP heaters. 5.Excess Heating Surface of Boiler:  Modify the boiler pressure parts design in consultation with manufacturers and designers. Read More BOE Interview Questions   What are the factors which affect the Natural circulation ? What is the difference between Tower type and Two pass conventional boiler? What parameters are measured during Boiler PG test ? Why the start up vent is used in Boilers? List out the potential...

 Boiler Operation Engineer Interview Question - 24 Q.What are the possible reasons for higher main steam temperature ? Ans.  1. Failure of Attemperator control valve 2. More boiler load 3. More heat transfer in super heater zone due to more velocity of flue gas 4. More firing rate 5. Low Economiser inlet feed water temperature 6. High moisture fuel 7. More excess air 8. Low drum level 9. Leakage of super heater coil Read More BOE Interview Questions   What are the factors which affect the Natural circulation ? What is the difference between Tower type and Two pass conventional boiler? What parameters are measured during Boiler PG test ? Why the start up vent is used in Boilers? List out the potential reasons for boiler tubes failure ?  What is cold end corrosion in boiler and When it occurs ? What is the circulation number in boiler ? Most Important Steam Blowing Questions Asked In Central BOE Interview  How it is been decided that RHS or LHS safety valve o...

 Boiler Operation Engineer Interview Question - 23 Q. What is the balanced draft system and why it is adapted here ? Ans.  Balanced Draft System is a combination of Induced and Forced Draught Systems. The Forced Draught Fan forces the air in to the furnace for combustion and the Induced Draught Fan sucks in gases from boilers side and discharges them in to the chimney. This System is used to create and maintain vaccum inside the furnace.  Read More BOE Interview Questions   What are the factors which affect the Natural circulation ? What is the difference between Tower type and Two pass conventional boiler? What parameters are measured during Boiler PG test ? Why the start up vent is used in Boilers? List out the potential reasons for boiler tubes failure ?  What is cold end corrosion in boiler and When it occurs ? What is the circulation number in boiler ? Most Important Steam Blowing Questions Asked In Central BOE Interview  How it is been decided th...

 Boiler Operation Engineer Interview Question - 22 Q. What are the reasons for lifting of steam drum safety valve ?  Ans.  Drum safety valve may lift due to following reasons: 1. Excessive fuel firing rate. 2. Sudden decrease in steam load. 3. Faulty setting of safety valve. The following actions have to be taken to bring boiler into normal operation: 1. Reduce fuel firing rate. 2. Open the start up vent valve. 3. Observe the steam flow of the super heater. If there is no flow, trip the boiler. 4. Maintain the steam drum level. Read More BOE Interview Questions   What are the factors which affect the Natural circulation ? What is the difference between Tower type and Two pass conventional boiler? What parameters are measured during Boiler PG test ? Why the start up vent is used in Boilers? List out the potential reasons for boiler tubes failure ?  What is cold end corrosion in boiler and When it occurs ? What is the circulation number in boiler ? Most Impor...