Dominik Fry October 2018
Editor’s Note: Dominik Fry is a member of Ray Hardee’s team at Engineered Software Inc. This month, he is a guest columnist in Hardee’s place.
Joseph Benefield September 2018
When it comes to pumping systems that have varying demands, many engineers are hesitant to size the pump to less than the highest possible load. While this is certainly conservative from a flow standpoint, the downside is that additional costs are incurred to mitigate what might be a small risk.
Lev Nelik September 2018
Unless a brand new plant is being designed, users decide to replace a pump because of its age and wear or persistent reliability issues.
Jim Elsey September 2018
This is the third article in a five-part series. Read the first part of the series here and the second part of the series here.
Lev Nelik August 2018
Proper lubrication is a key to long, trouble-free life of centrifugal pump bearings. In recent years, the issue of lubrication has received renewed attention from pump users in chemical plants, pulp and paper mills, refineries and other industries.
Jim Elsey August 2018
This is the second article in a five-part series. Read the first part of the series here.
Ray Hardee August 2018
Editor’s Note: This is Part 2 of a series. Part 1, in Pumps & Systems, July 2018, introduced developing a model for process safety management (PSM).
Lev Nelik July 2018
I have received a lot of feedback from our readers on Part 1 of this article from the May issue of Pumps & Systems. One reader writes:
Jim Elsey July 2018
This is the first article in a five-part series. In the world of psychology and specifically in the area of introspective issues, it is often declared that, “what you resist will persist.”
Ray Hardee July 2018
Working with chemicals can pose a host of dangers. Those in the process industries must take every step possible to protect employees and others from hazardous conditions.
Jim Elsey June 2018
Pumps are stupid. A centrifugal pump is simply a machine, where for a given set of fluid properties, impeller geometry and operating speed it will react to the system in which it is installed.
Jeff Sines June 2018
Since the motor performance defines the amount of shaft power developed as a function of shaft speed, the pump’s power curve is the motor’s power curve.
Ray Hardee May 2018
In this column, we will look at ways to measure the flow rate within a piping system without the expense of the custody transfer meters or the complexity of a flow control loop.
Jim Elsey May 2018
Non-Newtonian fluids dilating and thixotropic fluids and are more challenging to pump.
Jim Elsey April 2018
Calculating NPSHR and NPSHa can prevent the pumped fluid's pressure dropping below its vapor pressure and causing cavitation.