PROFILE
M01 – Pumps - Theory, Practice and Maintenance
Defining pumping systems
- • Most important characteristics of a pumping system
- • Types of pumps
- • Positive Displacement family tree
- • Basic difference between Centrifugal and PD pumps
- • Rotary pumps
- • Market applications and Selection of Pumps
- → Applications of PD pumps
- → General guidelines for pump selection
- → Pump characteristics v/s market applications
- → Application – High Viscosity, Low and variable viscosity
- → Application – Low shear pumping, Solids handling capability
- → Application – Multi-phase flow
- → Process Condition – High pressure
- → Process Condition – Low flow, Efficiency
- → Process Condition- Combination of high pressure / low flow and efficiency
- → Process Condition - Flow control
- → Environmental system requirements
- • Centrifugal Pump
- → Basics
- → Types (Construction based)
- → Construction of an impeller
- → Types of impellers
- → Seal chamber and stuffing box
- → Defining Suction Head
- → Capacity, Input horsepower, output horsepower, Efficiency
- • Pump Fundamentals
- → Pressure
- → Head v/s Pressure
- → Effect of specific gravity on Head
- → Kinetic energy
- → Design of volutes and flow patterns
- → Specific gravity and pump performance
- → Effect of fluid velocity
- → Gauge height correction
- → What is TDH and TH
- • Pump Performance parameters
- → Head-Flow characteristics
- → Power-Flow characteristics
- → Pump Efficiency
- → Efficiency v/s Flow
- → Net Positive Suction Head (NPSH) and its Characteristics
- • NPSH and Cavitation
- → Cavitation process
- → Cavitation damage
- • Preferred operating range of a centrifugal pump
- → Allowable operating range
- • Pump characteristic curves
- → Effect of RPM
- → System curves
- → System Head
- → Energy requirements to lift the fluid
- → Power required to lift the fluid
- → Static Head
- → Dynamic Head
- → Sources of Friction
- → Parameters influencing frictional losses
- → Standard Pipe Head Loss Tables
- → Calculating frictional losses
- → Frictional loss coefficients
- → Pipe lengths and associated Heads
- → Types of System Curves
- → System Curve – No control valve
- → System Curve – With control valve
- • Parallel pumps
- → Parallel pumping system
- → Parallel pumping system – Low friction
- → Parallel pumping – Mismatched pumps
- • Series pumping
- • Pump vibration
- • New generation pump example
- • How pumps get damaged – 10 Ways
- • Monitoring and Predicting Centrifugal Pump performance
- → If the pump does not deliver enough water
- → If the pump does not deliver enough pressure
- → If the pump does not prime properly
- → If the pump is drawing too much amperage
- → Monitoring Wet end of the pump
- → Monitoring Stuffing box and Seal area
- → Monitoring Bearing case
- • Predicting pump performance
- • Preventive maintenance
- &arr; Preventing bearing and seal failures
- &arr; Good maintenance practices for seals and bearings
- &arr; Recommended daily preventive maintenance checks for centrifugal pumps and drives
- &arr; Recommended monthly and 6 monthly preventive maintenance checks for centrifugal pumps and drives
- &arr; Recommended yearly preventive maintenance checks for centrifugal pumps and drives
- • Trouble shooting of centrifugal pumps
- → The pump is hooked up to the piping and it is running
- → The pump is still hooked up to the piping, but it is not running
- → The pump has been taken into the workshop, but has not yet been disassembled and you will be present at the disassembly
- → The pump has been disassembled. You were not present, but the parts are available for your inspection
- → Troubleshooting four possibilities of rub or wear marks
- → Centrifugal pumps – Troubleshooting guide
- • Trouble shooting of Reciprocating Pumps
- • Alignments Techniques
- → What is coupling alignment?
- → Types of coupling
- → Co-linearity
- → Types of Misalignment
- → Offset, or Parallel
- → Angular
- • Measurement Conventions
- • Pre-alignment Steps
- • Alignment Tolerances
- • Thermal Growth Targets
- • Not correcting for soft foot
- • Not roughing in
- • Usage of shims
- • Not controlling backlash or unwanted movement
- • Incorrect sequence of moves
- • 4 steps of alignment
- → Angular misalignment in the Vertical Plane
- → Parallel Offset in the Vertical Plane
- → Angular misalignment in the Horizontal Plane
- → Parallel Offset in the Horizontal Plane
- → Things to watch if alignment still does not happen
- → A few helpful tips
- • Pump mounting
- → Foundations
- → Housekeeping pads
- → Inertia bases
- → Base plate selection
- → Foundation preparation
- → Base plate installation
- → Grouting
- → Pump and Motor Installation
- → Pipe Installation
- → Pipe strain
- • How to start a pump
- → Pump rotation
- → Motor Solo
- → Couplings
- → Other Startup Considerations
- → Pump Start up
- → Final Vibration Acceptance
- • Checklist
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