Chemical Processing - February 2008 - (Page 24) entrifugal process pumps often must perform in hostile and stressful operating conditions. As a result, the likelihood of their premature failure increases over time — raising risks of incurring considerable costs and lost productivity from downtime. With pressures mounting to achieve better pump reliability, reduced maintenance and lower energy consumption, the quest to identify and implement viable solutions for relief ranks as a top priority. Evaluating pump maintenance and repair practices — paying particular attention to bearings, lubrication and seals — can serve as a crucial tool for attaining higher levels of pump reliability and longer service life. The proper bearings, lubricants and sealing systems can boost economies and ef ciencies and, when supported by proactive condition-monitoring approaches, can help extend the service life of pumps and minimize the need for untimely pump replacement or rebuilds. 24 • February 2008 Selecting the bearings Bearings in centrifugal pumps support hydraulic loads imposed on the impeller, the mass of the impeller and shaft, as well as loads due to couplings and drive systems. They also keep the shaft axial and radial de ections within acceptable limits for the impeller and shaft seal. A variety of conditions tend to continually put bearings in many centrifugal pumps to the test. The bearings often will face high axial loads, marginal lubrication, and high operating temperatures and vibration, all while the bearings attempt to minimize friction — which, if uncontrolled, can result in power loss, excessive heat generation, increased noise or wear, and early bearing failure. All these influences can dramatically impact the service life and reliability of bearings and, in turn, pumps. So, first and foremost, evaluate bearings (types, designs www.chemicalprocessing.com http://www.chemicalprocessing.com
Table of Contents Feed for the Digital Edition of Chemical Processing - February 2008 Chemical Processing - February 2008 Contents From the Editor ChemicalProcessing.com Field Notes In Process Energy Saver Compliance Advisor Nanoparticle Safety Raises Questions Take the Pressure Off Vacuum Systems Achieve Optimum Centrifugal Pump Performance Rethink Batch-Manufacturing Alarm Systems Dr. Gooddata Orlando Plant Pioneers HMI Migration Strategy Process Puzzler Plant InSites Equipment & Services Ad Index Product Spotlight/Classifieds End Point Chemical Processing - February 2008 Chemical Processing - February 2008 - Chemical Processing - February 2008 (Page Cover1) Chemical Processing - February 2008 - Chemical Processing - February 2008 (Page Cover2) Chemical Processing - February 2008 - Chemical Processing - February 2008 (Page 3) Chemical Processing - February 2008 - Chemical Processing - February 2008 (Page 4) Chemical Processing - February 2008 - Contents (Page 5) Chemical Processing - February 2008 - Contents (Page 6) Chemical Processing - February 2008 - From the Editor (Page 7) Chemical Processing - February 2008 - ChemicalProcessing.com (Page 8) Chemical Processing - February 2008 - Field Notes (Page 9) Chemical Processing - February 2008 - In Process (Page 10) Chemical Processing - February 2008 - In Process (Page 11) Chemical Processing - February 2008 - Energy Saver (Page 12) Chemical Processing - February 2008 - Compliance Advisor (Page 13) Chemical Processing - February 2008 - Nanoparticle Safety Raises Questions (Page 14) Chemical Processing - February 2008 - Nanoparticle Safety Raises Questions (Page 15) Chemical Processing - February 2008 - Nanoparticle Safety Raises Questions (Page 16) Chemical Processing - February 2008 - Nanoparticle Safety Raises Questions (Page 17) Chemical Processing - February 2008 - Nanoparticle Safety Raises Questions (Page 18) Chemical Processing - February 2008 - Nanoparticle Safety Raises Questions (Page 19) Chemical Processing - February 2008 - Take the Pressure Off Vacuum Systems (Page 20) Chemical Processing - February 2008 - Take the Pressure Off Vacuum Systems (Page 21) Chemical Processing - February 2008 - Take the Pressure Off Vacuum Systems (Page 22) Chemical Processing - February 2008 - Take the Pressure Off Vacuum Systems (Page 23) Chemical Processing - February 2008 - Achieve Optimum Centrifugal Pump Performance (Page 24) Chemical Processing - February 2008 - Achieve Optimum Centrifugal Pump Performance (Page 25) Chemical Processing - February 2008 - Achieve Optimum Centrifugal Pump Performance (Page 26) Chemical Processing - February 2008 - Achieve Optimum Centrifugal Pump Performance (Page 27) Chemical Processing - February 2008 - Achieve Optimum Centrifugal Pump Performance (Page 28) Chemical Processing - February 2008 - Rethink Batch-Manufacturing Alarm Systems (Page 29) Chemical Processing - February 2008 - Rethink Batch-Manufacturing Alarm Systems (Page 30) Chemical Processing - February 2008 - Rethink Batch-Manufacturing Alarm Systems (Page 31) Chemical Processing - February 2008 - Rethink Batch-Manufacturing Alarm Systems (Page 32) Chemical Processing - February 2008 - Rethink Batch-Manufacturing Alarm Systems (Page 33) Chemical Processing - February 2008 - Rethink Batch-Manufacturing Alarm Systems (Page 34) Chemical Processing - February 2008 - Rethink Batch-Manufacturing Alarm Systems (Page 35) Chemical Processing - February 2008 - Rethink Batch-Manufacturing Alarm Systems (Page 36) Chemical Processing - February 2008 - Dr. Gooddata (Page 37) Chemical Processing - February 2008 - Dr. Gooddata (Page 38) Chemical Processing - February 2008 - Orlando Plant Pioneers HMI Migration Strategy (Page 39) Chemical Processing - February 2008 - Orlando Plant Pioneers HMI Migration Strategy (Page 40) Chemical Processing - February 2008 - Process Puzzler (Page 41) Chemical Processing - February 2008 - Process Puzzler (Page 42) Chemical Processing - February 2008 - Plant InSites (Page 43) Chemical Processing - February 2008 - Plant InSites (Page 44) Chemical Processing - February 2008 - Equipment & Services (Page 45) Chemical Processing - February 2008 - Ad Index (Page 46) Chemical Processing - February 2008 - Product Spotlight/Classifieds (Page 47) Chemical Processing - February 2008 - Product Spotlight/Classifieds (Page 48) Chemical Processing - February 2008 - Product Spotlight/Classifieds (Page 49) Chemical Processing - February 2008 - End Point (Page 50) Chemical Processing - February 2008 - End Point (Page Cover3) Chemical Processing - February 2008 - End Point (Page Cover4)
For optimal viewing of this digital publication, please enable JavaScript and then refresh the page. If you would like to try to load the digital publication without using Flash Player detection, please click here.