Monday, June 15th
“Motor Driven Pumping Systems - One Day Workshop”
William Livoti
Power Generation Business Development Manager
WEG Electric Corporation
863.393.8921
wlivoti@weg.net
Biography
Over 40 years of experience in the pump industry designing, field testing, repairing and troubleshooting
mechanical seals, compressors and pumping systems. William holds a degree in mechanical engineering
and has worked for several pump and mechanical seal OEM’s as well as Corporate Principal Engineer for
Balance of Plant equipment at a large power utility company where among other responsibilities he was
accountable for asset management, life cycle performance, system assessment, failure analysis, plant
efficiency, O&M and capital budget. Mr. Livoti has been active in the Hydraulic Institute for a number of
year’s he is Chairman of the Educational Affairs Steering Committee, Principal Instructor for Pump
System Optimization as well as Instructor for Train the Trainer and has co-authored three books with the
Hydraulic Institute, Pumps System Optimization Guide Lines, Power Plant Pump Application Guide Lines
and Variable Frequency Drive Guidelines. William is an active member of Vibration Institute, IEEE Power
Engineering Society, ASME Power Engineering Society, and Electric Power Research Institute Large
Electric Motor Users Group.
As a Power Generation Business Development Manager, his primary focus is to promote WEG solutions
and technology in the power generation industry as well as conduct Pump / System Assessments.
Abstract – Motor Driven Pumping Systems - One Day Workshop
Purpose: Increasing energy demand requires increased overall plant efficiency, reliability and
profitability. Improved systems design, installation and operation will assist in achieving these
objectives. Motor driven systems comprise a large portion of a condensing steam power plant
therefore providing the greatest opportunity for improving Uptime, availability and reliability.
Scope: Provide FOMIS members a one day workshop addressing motor and drive interaction as
applied to large electric motor driven pumping (vertical and horizontal) systems. This in-depth
workshop will provide a step-by-step process on selection, installation, operation, maintenance and
performance testing of pumping system with a focus on motor reliability.
Agenda
8:00 a.m. – 12:00 p.m. Morning Session
• How a Roto-Dynamic (Centrifugal, Mixed Flow, and Axial Flow) Pump Works
• Basic Pump Design
• Boiler Feed
• Condensate
• Circulating Water
• Heater Drain
• Calculating Horsepower
• Water Horsepower
• Brake Horsepower
• Calculating Pump Efficiency
• Understanding the Pump Performance Curve (Impact on Motor)
• Reading a Pump Curve
• Plotting a Pump Curve
• Types of Curves
• Pump Efficiency
• Shut-off Head
• Allowable Operating Range (AOR)
• Best Efficiency Point (BEP)
• Preferred Operating Range (POR)
• Minimum Flow
• Thermal
• Minimum Flow
• Minimum Continuous Stable Flow
• Maximum Flow Rate (Run Out)
• Operating Point Vs. Design Point
• Pump Affinity Rules
• Change of Rotational Speed
• Change of Impeller Diameter
12:00 p.m. – 1:00 p.m. Lunch
1:00 p.m. – 4:30 p.m. Afternoon Session
• Pumping System Fundamentals; The Impact on Total System Efficiency
• Pump
• Motor
• Coupling
• Gearbox
• Fluid Drive
• Drive
• Piping
• Valves
• End User Equipment (Boiler, Heat Exchanger, etc.)
• System Issues / Troubleshooting (Critical Systems)
• Failure Modes / Cause and Effect
• Boiler Feed
• Condensate
• Heater Drain
• Circulating Water
• Installation
• Piping
• Pump Performance
• Cavitation
• Coupling
• Valve
• Gearbox
• Assessing System (What to Look For)
• Plotting a System Curve
• Diagnostics and Data Collection
• Using the Data to Identify Opportunity
• Life Cycle Costing
Tools:
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•
•
•
•
•
•
PSIM (Pump System Improvement Modeling Tool) - Download from HI Web Site
LCC Calculator (Excel Spread Sheet)
System Efficiency Spread Sheet (Excel Spread Sheet)
Valve Tool
Speed Change Calculator (Excel Spread Sheet)
Friction Loss Calculator (Excel Spread Sheet)
QA / QC Check List (Excel Spread Sheet)
• Boiler Feed Pump
• Condensate Pump (Vertical)
• Circulating Water Pump
Deliverables: Participants who attend the workshop will gain a better understanding of how pumping
systems can affect the overall systems design and reliability of power plants as well as expertise on
motor and pump interaction as applied to critical pumping applications within a typical condensing
steam power plant. The workshop will also address the impact on motors driving the power plant
pumps and how reliability and efficiency can be optimized by proper installation, operation and
maintenance.