• Understand the mechanical design of the centrifugal compressor
• Learn the principles of the centrifugal compressors
• Understand the anti-surge control systems
• Learn the failure analysis and troubleshooting the centrifugal compressor
• Learn the Maintenance of the centrifugal compressors

Mechanical Engineering

Dynamic Compressors (Component Design and Materials)

• Types; centrifugal, axial & ejectors; principle of operation and application
• Main parameters such as pressure ratio, pressure, mass flow rate, flow & pressure coefficients
• Specific speed and it’s impact on efficiency
• The fan laws
• Centrifugal compressor stage & main components; types of impellers; volute;
• diffuser, return channel, diaphragm , stage seal
• Various construction designs for centrifugal compressors; volute, barrel, integrally geared
• Multistage centrifugal compressors; axial forces and force balancing
• Axial compressor stage
• Comparison between centrifugal & axial compressor; application
• Compressor performance curve; none dimensional parameters; comparison between axial & centrifugal curve.
• Axial compressor construction design
• Compressor materials
• Identifying main points on compressor curve; surge point, surge line; stonewall

• Compressor stall & rotating stall
• Full compressor characteristic
• Explaining compressor surge
• Operation of compressor/system; operating point; transient conditions
• Capacity control and surge control methods
• Operation and performance checks
• Setting maintenance frequencies and procedures
• Preparing inspection and overhaul plans and schedules
• Preparing spare parts orders using manufacturer’s documents
• Disassembly/ assembly procedures for barrel and axial compressor

• Compressor inspection; shaft, mechanical components, seals, clearances
• Compressor auxiliary systems; lubrication, sealing, cooling, surge control and their inspection

PD (positive displacement) Compressors

• Main types; principle of operation and application
• PD compressor performance curve; interaction with a system; pulsation dampening
• Reciprocating compressor; construction, arrangement & main mechanical
• components; piston, piston, rod, cylinder, crankshaft, cross-head, packing
• Compressor Valves (Operation and Maintenance Problems)
• Reciprocating compressor capacity control; loader/un-loader, pockets, clearance
• Piston Rod Packing
• Piston rod and frame loading
• Cylinder cooling
• Non-lubricated compressors
• Labyrinth Piston Compressors
• Rotary PD compressors, mainly helical and lobe types
• Reciprocating compressors maintenance
• Auxiliary system; lube oil, lubricator, cooling system

Overhaul and Repair of PD Compressors

• Compressor Alignment
• Web Deflection Measurements
• Foundation Problems and repair
• Bearing Maintenance and Replacement
• Cylinder Repair and Maintenance
• Rebuilding Compressor Pistons
• Installing Pistons on Piston Rods
• Setting Piston End Clearances
• Inspection and Refurbishment of Piston Rods
• Manufacture Techniques of Piston Rods and Parts replicatio

CDGA attendance certificate will be issued to all attendees completing minimum of 80% of the total course duration.