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S Raghava Chari
The author shared the problems developed during commissioning and the author’s 17 years of service in a South Indian Ammonia, Urea, and NPK complex fertilizers plant.
Passing Control Valves Cause Yearly Losses in Production Plant
Under and Over-Capacity Control Valve Pose Poor Controllability
Repeat Failures of Letdown Valves
Failed Letdown Valve Shuts down a Urea Plant Several Hours
Pipeline Shakes Torn apart Valve Positioners
Instrument Steam Pressure Taps Primary Block Valves Glands and Bonnets Leaks
Unstable & Drifting Values of Differential Pressure Transmitter Problem
Premature Arc Fault Breaker Failures
Poor Electrical Heating Element Lives – Problem Solved
Minimum Oil Circuit Breaker (MOCB) No Vendor Spares & Service
HT Motor Problem appears after Disassembly and Reassembly
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