Cost Reductions Through Life Cycle Improvements
More than 15 years ago, a 160 in plate mill was experiencing significant maintenance problems with its descaling pumps; the typical mean time between repairs was only 6 to 8 months. Some rebuilt pumps...
 Detecting Pump Cavitation with a Vibration Sensor
Pumps & Systems, June 2007Cavitation is a destructive condition that can destroy the inside of a pump before you even realize it is occurring. Early detection can minimize damage, reduce downtime,...
10 Steps for Proper Pump-Pipe Alignment
The initial version of this procedure was published several years ago by me. Since then, a large amount of feedback has been accumulated. The most recent reflection appeared in the March 2012 issue of...
Correct equipment selection and application saved an aluminum producer $36,000.
Asset Management Systems
Data and life cycle management technology helps refineries maintain equipment and reduce the total cost of ownership.Typically, 90 percent of the total life cycle cost (LCC) of a flow management...
Bearing Failures
New bearing system keeps circulating water pumps running in a 
nuclear power plant.After 8 years of problem-free operation, a bearing failure forced an outage at a nuclear power plant. When two more...
Benefits of Smart Pumps in Building HVAC Systems
The ever-growing need for energy efficiency demands intelligent pumping systems.Electrical energy demand is projected to double by 2030, putting the world in the midst of a global energy dilemma. At...
Editor's Note: This is the first in a six-part series on centrifugal pump efficiency. For other articles in this series, click here.In this multi-part series, we will investigate several aspects of...
Pumps and Systems, January 2007Example 1Vertically mounted pumps can resonate as a total structure in a "rocking" mode, as shown in Figures 1 and 2 below. This is one of the toughest unsolved...
Easy Shaft Alignment
Thorough preparation and the right alignment method are critical.
Offline and online testing can improve reliability and reduce downtime.
Pumps & Systems, August 2008Progressive maintenance practices are vital to maximize pump life, minimize downtime and avoid costly repairs and lost production. It is good practice to plan the...
Pumps & Systems, April 2007To quickly identify, select and perform effective PM tasks, plants must (1) identify high-risk equipment, (2) develop efficient, effective tasks to manage the most...
Flash Steam Recovery Using Condensate Tank Vent Condensers
With today’s energy prices and the need to reduce emissions, a plant cannot allow its steam/condensate systems to vent flash steam to the atmosphere.Depending on the installation costs, plants will...
Handling Downtime
While scheduled downtime is different from unscheduled, both can take away from a company. An effective reliability program, however, will minimize unplanned downtime and maximize scheduled...
Healthy Control Valves
A simple maintenance routine can help ensure trouble-free valve operation.Whether the control valve in your system is the first one that has required maintenance or if you are experienced with...
HI Pump FAQs February 2012
Q. We plan to purchase several slurry pumps and understand that this service is considered severe duty. What guidelines should be followed regarding pump selection based on good wear resistance?A....
Pumps and Systems, February 2007A large refinery or power plant may operate up to a dozen units of the same design, all installed 20 or 30 years earlier. In this mature equipment environment, some...
Pumps & Systems, March 2007Identifying the source of vibration by following the amplitude: the case of a company that thought the problem was a pump impeller, but, in fact, the problem was over...
Q. What does the expression discharge recirculation signify in rotodynamic (centrifugal) pumps? When does it occur, and is it harmful to the pump?   A. Discharge recirculation is circulatory...
Pumps & Systems, December 2008Editor's Note: This is part one of a two part series about the 'commandments' of increasing pump reliability and life. To read the second part, click...
Editor's Note: This is part two of a two part series about the 'commandments' of increasing pump reliability and life.Last month, we discussed Commandment 11, Thou shalt always operate...
Inspections and Repair Enhance Pump Performance
Improvement can result from repair opportunities.Often all that is needed to improve a pump’s dependability and performance is a high quality inspection and repair. Over time, a pump may...
Intelligent Pump Cleaning Cuts Maintenance Time
The installation of an AC drive with an advanced software tool has dramatically cut call-outs for blockages at an Irish county council pumping station. Pump control software has been installed to...
Large centrifugal or special pumps
Pumps & Systems, June 2008Vibration is one of the most damaging forces in the industrial environment. Vibration not only reduces the life of equipment, but can also adversely affect the quality of...
Pumps & Systems, July 2008Routine checkups, a healthy diet, and regular exercise are the prescriptions for a healthy life. The same prescriptions hold true for healthy pumps. Your pumps' "diet and...
In the demanding conditions of the oil and gas industry, plant managers are realizing that lubrication best practices can help improve equipment reliability, optimize maintenance and reduce energy...
There is a saying that “You don’t know what you’ve got until it’s gone.” This concept can be all too familiar for anyone who has ever neglected a pump. A dependable pump is not truly...