The next Pump School class: May 15-16, 2008 - Centrifugal and Positive Displacement Pumps ...

Pump Types and Terminology Classification of Pumps. Differences and similarities. Photographs and cross-sectional views. List of Manufacturers. Pump Performance (Centrifugal and Positive Displacement) Net Positive Suction Head (NPSH), cavitation, recirculation, suction specific speed Centrifugal Pumps Centrifugal Pump Theory o Pump performance curves: head-capacity, power, efficiency o System curve: static versus friction components o Affinity laws o Operating point control: valve throttling versus speed controller o Parallel operation o Example: "How Much Money Did a Maintenance Department Save His Plant?" Efficiency and power are compared and annual energy cost savings are calculated for pumps of various horsepower levels. o Overview of major specs: HI, ANSI, API, PIP, ISO o Sealing methods: packings, mechanical seals, and seal-less designs o Viscosity correction exercise. Constructing complete new H-Q, power and efficiency curves for a given viscosity, from the original curve on water o Case History - Double Suction Cooling Water pump troubleshooting o Reassembly of a single stage end suction centrifugal pump Pump Wear Rings Single-Stage and Multi-Stage Pumps Failure Mechanisms – identification and monitoring Participants test two pumps in parallel, and construct a pump curve Energy conservation methods, efficiency and system optimization – with actual installations examples Positive Displacement Pumps Performance characteristics: flow-pressure curve, power, efficiency Viscosity effects. Theoretical flow, actual flow, and slip Quick rule-of-thumb estimating of a through-flow capability of a gear pump based on a single gear main dimensions Minimum required suction pressure, based on speed, viscosity and geometry. Cavitation in gear pumps Lubrication: hydrodynamic versus boundary (PV values) Hands-On Exercise: reassembly of a gear pump. Changing of worn bushings, gears, shafts and seals Overview of other types of rotary pumps Internal Gear pumps Multiple Screw pumps Progressing Cavity pumps Metering pumps Seals and Bearings Conventional Packing Glands Mechanical Seals Seal Failure Mechanisms Maintenance and Repair of Mechanical Seals Bearings – failure modes and how to extend life Reliability Couplings Alignment: Piping and Baseplates Planned Maintenance - Predictive and Preventive Reliability Program Field Troubleshooting, Specialty Designs, and Performance Modification Techniques Application Criteria and Specific Parameters o Pump Type choices - via Specific Speed (Ns) used as a selection criterion o Flow-Pressure envelope o Viscosity o Chemistry and materials of construction o Abrasiveness o Temperature o Self-Priming o Drivers Each attendee will receive a Certificate of Graduation with 1.6 Continuing Education Units (CEU) and qualify for 15 Professional Development Hours needed to fulfill Professional Engineers’ continuing education requirements in many states. In addition, each attendee may choose to take a Qualifying Test, depending on readiness, qualifications and background for one of the following levels. Call 770-310-0866