Describe and Operate Centrifugal Pumps

Describe and Operate Centrifugal Pumps

Total Pages: 185

Training Objectives
Upon completion of this centrifugal pump training kit, you will be able to describe:

    		• the purpose of centrifugal pumps
    		• centrifugal pump operating principles and operating characteristics
    		• centrifugal pump operating variables
    		• centrifugal pump components
    		• single stage and multi-stage pumps
    		• centrifugal pumping systems and their applications
    		• pump drivers
    		• pump auxiliary systems
    		• control of centrifugal pumps
    		• the operator's strategy to monitor pump operation
    		• operator's decision making and checks during:
    - pump startup
    - pump shutdown
    		• troubleshooting response to abnormal pump operation

    Table of Contents

    Training Objectives 1
    1 Introduction 1
    2 Centrifugal Pump Principles 9
    2.1 Pumping Action 9
    2.2 Pump Flow and Pressure Concepts 10
    2.3 Pump Operating Relationships 15
    2.4 Pump Operating Regions 18
    2.5 Pump Laws: Effect of Speed and Impeller Changes 21
    3 Centrifugal Pump Operating Variables 24
    4 Centrifugal Pump Components 25
    4.1 Pump Components: Impellers 26
    4.2 Pump Components: Casing 28
    4.3 Pump Components: Shaft Seals 29
    4.4 Pump Components: Bearings 41
    4.5 Pump Components: Bearing Seals 43
    5 Single Stage and Multistage Centrifugal Pumps 43
    5.1 Single Stage Pumps 43
    5.2 Multistage Pumps 51
    6 Single Pump Applications 56
    6.1 Single Pump: Valves, Instrumentation, and Piping 56
    6.2 Single Pump: Operations Practices for an Offline Pump 65
    6.3 Single Pump: Operations Monitoring 68
    7 Multi-Pump Applications: Parallel Pumps 69
    7.1 Parallel-Pumping System with Two Pumps 70
    7.2 Parallel-Pumping System - Two Processes Share a Standby Pump 73
    8 Multiple-Pump Applications: Series Pumps 77
    8.1 Series-Pumping System - Two Pumps 77
    8.2 Booster & Main Pump Systems and Applications 80
    9 Pump Auxiliary Systems 81
    9.1 Lubrication Systems and Bearing Housings 81
    9.2 Pump Freeze Protection 88
    10 Centrifugal Pump Drivers: Electric Motor 93
    10.1 Electrical Supply System: Utility Power 94
    10.2 Electrical Supply System: Power Generated Onsite 95
    10.3 Electrical Distribution System: MCCs and Motor Starters 96
    10.4 Pump's Electric Motor 100
    11 Other Centrifugal Pump Drivers 102
    12 Centrifugal Pump Controls 103
    12.1 Pump Manual Control Switches 103
    12.2 Individual Pump Control Loops 104
    12.3 Pump Station Control Loops 105
    12.4 Pump Protective Controls 107
    12.5 Permissives to Start Pump 110
    13 Self-Check 115
    14 Self-Check Answer Key 124

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