ADVANCED PUMPS: CENTRIFUGAL PUMP THEORY AND APPLICATIONS

Presenter: Willem van der Westhuizen

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The applicant has 24 years’ experience in power plant critical pumps and associated equipment and mechanical engineering. Willem joined Eskom in July 1982 as a Pupil technician. Willem joined the Turbine Plant Engineering Department in Megawatt Park as…More

Number of days:2
Date and Venue:
March 14, 2017
Johannesburg

Introduction Diagrams
• Simple End Suction Pump
• Pump Cross Section
• Parts List
• ANSI Pump Curve Sensitivity for Pump Reliability
• API Pump Curve Practices
• High Speed & High Head Pump Curve

Centrifugal Pump Fundamentals
• How Centrifugal Pumps work
• Radial Thrust
• Axial Thrust
• Calculating Pump Total Head
• Typical Centrifugal Pump Performance Curves
• Centrifugal Pump Affinity Laws
• Calculating the power input required by the Pump
• What is NPSH required and NPSH available
• How to deal with unsatisfactory NPSH problems
• Cavitation
• What is Specific Speed – Ns or Nq
• Typical Characteristic Curve Shapes for Centrifugal Pumps
• Flow Control in Centrifugal Pumps
• Examples of Re-circulation Systems

Types of Pumps
• Condensate Extraction Pump
• Circulating Water Pump
• Boiler Feed Pump
• Boiler Feed Booster Pump
• Balance of Plants Pumps

Acceptance, Testing, Operational Manuals and Tender Specs
• Acceptance Testing
• Proper Specifications and Tender Requests
• Evaluation, Selection and Purchase
• Common Design Installation Errors & Omissions
• Common Maintenance Errors
• Common Operating Errors
• Operation & Maintenance Manuals

General
• Power Plant Pump Monitoring
• Vibration Analysis Fundamentals
• API Standard 610

Types of Pumps and Pump Selection
• Pump selection – example 1
• Pump selection – example 2
• Pump similarity Laws
• Specific Speed
• Low Specific Speed Impeller
• Medium Specific Speed Impeller
• High Specific Speed Impeller
• Influence of Specific Speed
• Suction Specific Speed (Nss)
• NPSH Defined
• NPSH Test Procedure
• NPSH Factors
• Calculation of NPSH Vertical Pumps
• Pumps in Series and Parallel
• Variable Speed
• Minimum Flow Required
• Total Pump Lifetime Cost

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