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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.
Steam Letdown Station Problems

Steam Letdown Station Problems and their Solutions

Root Cause Analysis (RCA): Steam turbine 100 to 40 bar steam letdown station 3-year long persistent flange leaks stopped.

RF and RTJ Flange Installed Gasket

Flange Joint Errors shutdowns root cause analyzed and eliminated

Flange Joint Errors shutdowns a plant and its root cause analyzed and eliminated.

Leaking Plug Valves pose Safety Hazards and Lead to Plant Shutdown

Leaking Plug Valves Pose Safety Hazards and Lead to Plant Shutdown

Sledge open/close too hard to operate and leaking plug valves pose safety hazards and lead to plant shutdown.

Pipe Elbow Sudden Burst

A Pipe Elbow Sudden Burst Fatalities and Wrecked Panel Instrumentation

Root Cause Analysis (RCA): A pipe elbow sudden pipe burst fatalities and wrecked panel instrumentation.

Reformer Fan Bearing Change Times cut by 90%

Reformer Fan Bearing Change Times cut by 90%

Root Cause Analysis (RCA) provides a solution to Reformer Fan Bearing Change Times cut by 90%.

Fired Boiler Induced Draft Fan (IDF) Failures

Fired Boiler Induced Draft Fan (IDF) Failures Upset all Plants Operations

Root Cause Analysis (RCA): Fired boiler-induced draft fan (IDF) failures upset all plants operations.

Fan Motor Frequent Journal Bearing Failures

Fan Motor Frequent Journal Bearing Failures Posed Plant Outages

Root Cause Analysis (RCA): 450 KW 1500 RPM plant fan motor frequent Journal Bearing failures posed plant outages.

Turbine to Gearbox Alignment Drifts Caused Pump Transfers Problems

Turbine to Gearbox Alignment Drifts Caused Pump Transfers Problems

Root Cause Analysis (RCA) related to the pumps’ turbine to gearbox alignment drifts caused pump transfers upset operations.

Gearbox within week Failing Journal Bearing upset Plant Operations

Gearbox within week Failing Journal Bearing upset Plant Operations

Root Cause Analysis (RCA): 1800 kW 8000 to 750 RPM Gearbox (GB) within week failing journal bearing (JBs) upset plant operations.

Glass Bottle Level Gauge

Antifriction Bearings Caused Machine Changeovers Posed Outages

Root Cause Analysis (RCA): Too poor antifriction bearings lives caused machine changeovers posed upsets / outages.

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