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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.
Leaky Boiler Drum Level Switch

Leaky Boiler Drum Level Switch Stops NH3 Plant Commissioning

Instrumentation engineering root cause analysis of Leaky Boiler Drum Level Switch Stops NH3 Plant Commissioning.

Innovative Segment Orifice

Stuck Segment Orifice Dimensions Calculations

Instrumentation engineering root cause analysis of stuck segment orifice dimensions calculations.

Packaging Machinery

Poor Bagging Scale Availability Threatened Production Cuts

Instrumentation engineering root cause analysis of poor bagging scale low availability threatened production cuts.

4 way solenoid valve root cause

Safety Liquid Ammonia Disconnect threatens NH3 Vapor Spill

Instrumentation engineering root cause analysis of Safety Liquid ammonia Disconnect threatens Large Quantities NH3 Vapor Spill.

Ball Valve root cause

Ammonia Feed Ball Valve to Ship Tank Closed

Instrumentation engineering root cause analysis of liquid ammonia failed closed feed ball valve loading to ship tank.

Magnetic Flow Meter Liner Damaged

Magnetic Flow Meter Liner Damaged and Winding Burnt

Instrumentation engineering root cause analysis of magnetic flow meter liner damaged and winding burnt problem.

Damaged Magnetic Flow Meter Flow Tube

None Could Repair Slightly Damaged Magnetic Flow Meter Flow Tube

Instrumentation engineering root cause analysis of slightly damaged magnetic flow meter tube and none of them could repair them.

Wrongly terminated Thermocouple (TC) wires

Too Low-Temperature Readings after a Failed Thermocouple Change

Instrumentation engineering root cause analysis of re-heating furnace too low-temperature readings after a failed thermocouple change.

Doubtful Temperature Readings

Doubtful Temperature Readings threatens Soaking Pit Wrecks 

Instrumentation engineering root cause analysis of doubtful temperature readings of temperature recorder that threatens soaking pit wrecks.

Thermowell Shank to Flange Repeat Weld Leaks

Thermowell Shank to Flange Repeat Weld Leaks

Problems and Solutions: One or more failed flanged thermowell (TW) weld leaks are needed during plant shutdown repairs.

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