Bleach Use in Wastewater Treatment
Mechanically actuated metering pumps improve operational efficiencies and eliminate concerns associated with off-gassing in sodium hypochlorite applications.To most people, sodium hypochlorite is...
Boiler Feed Pumps, Chemical Metering Pumps and Hydrostatic Pressure Tests
Q. How are chemical metering pumps used in combined-cycle power plant applications?A. Numerous applications in a combined-cycle power plant require the delivery of precisely metered quantities of...
Boiler Feed Pumps, Residual Mechanical Unbalance & Process Pump Piping System
Q. What considerations should be made when selecting the proper boiler feed pumps for a typical 400-megawatt, combined-cycle power plant?A. The operating range of the plant compared to the operating...
First of Two Parts Branch-line pumping applications abound throughout the pumping industry. These systems consist of a pump (or pumps) discharging into a single line that feeds a network of...
Choosing the right fluids and following best practices for maintenance can significantly enhance system reliability.
Last month’s column explored the effects that oversizing a pump has on the motor driving the pump, the adverse results of a pump no longer operating at its best efficiency point (BEP) for extended...
Inspections can identify undetected issues to prevent sanitary sewer overflows and the fines that can accompany them.
My last two columns (Pumps & Systems, April and May 2014) explained how pump suction behavior depends on how suction pressure is reduced. The original video, which showed two suction pressure tests,...
At a Southwest mine, parallel pumping systems can be moved individually as water levels rise.
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...
This material stands up to pump upsets such as cavitation and dry running.
The facility replaced old grinder pumps with stainless steel shredder pumps, which have needed no maintenance in almost two years.
A German pharmaceutical facility upgraded its pumps to efficiently handle solvents.
Choose the Right Coating
Understanding coating manufacturers' specification sheets.Choosing a coating for a pump can be a challenging task. A good coating can extend the life cycle of a pump, providing cost and downtime...
Modern pumps can benefit from a range of lubrication oils, from mineral to synthetic. While characteristics such as thermal stability and oxidation resistance are important to consider, every end user...
Pumps & Systems, July 2008When choosing a pump for a given application, there are many factors to consider. The system's parameters dictate the pump needed, so the trick to ensuring a...
Because of the substantial concentrations of solids that these pumps handle, end users must understand the available sealing options.
Regular care and inspections help prevent costly downtime.Clarifiers are expensive, to buy or repair, and their downtime can be costly in fines imposed by regulatory agencies and in community ill...
Careful analysis identified the issue with this multistage, oil transfer pump.
With fewer technical requirements, they provide lower-cost options for underserved industries.
SaaS platforms break down IT infrastructure barriers for designers and engineers.
Color-Coding Systems Establish Best Practice
Visual management helps improve maintenance practices and remove human error from the lubrication process.
Pumps & Systems, July 2008Much has been reported recently about surface water reservoirs in the Southeast and West maintaining dangerously low levels. In many cases, water levels have dropped to...
Flow accelerators and hybrid mixers provide effective performance while consuming less energy to generate turbulence.
Last month’s column (Pumps & Systems, October 2014) described the collection of data when assessing a system with no control. In this column, the plant operating data will be used to determine a...
My previous two columns have described assessing a system that does not use controls. In the first part (Pumps & Systems, October 2014) the assessment process was detailed. Last month, I covered...
Complexity and Change
Software helps manage change and compliance challenges in nuclear power facilities.One reason complex systems are difficult to manage is that they naturally tend to evolve over time. For example,...