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NCP BOE Interview question the potential reasons for boiler tubes failure ?

 NCP Boiler Operation Engineer ( BOE) Interview Question - 1 Question. List out the potential reasons for boiler tubes failure ?  Ans.  Reasons for boiler tubes failure: Failure due to overheating Failure due to internal scales Failure due to aging Failure due to uneven expansion Failure due to ash and flue gas erosion Failure due to material defects Failure due to internal and external tube corrosion Improper or effected circulation due to opening/passing of low point drains Most Important Post : How to calculate suction head in centrifugal pump Water Chemistry Interview Question With Answer  Boiler Feed Pump Interview Question With Answer  Top 16 Power System Interview Questions   Boiler Feed Pump (B.F.P) Starting Procedure In Thermal Power Plant Types of Mechanical Seals in Pump  Why pumps are used in parallel and series mode of operations ? What is priming of a centrifugal pump and why it is required  Why Hcl is more preferred than Sulphuric Acid for regeneration of cation exchange