Jim Elsey May 2019
The old joke about falling from a tall building is that “it isn’t the fall that kills you, it is the sudden stop at the bottom.” When it comes to cavitation, it is not the formation of the vapor bubbles that kills the pump, it is the subsequent collapse.
Dr. Nelik May 2019
This reader’s response to Dr. Nelik is from Global Pump Engineering Manager Ben Lindstrom
Jim Elsey April 2019
Last month, I discussed why a pump should be aligned nine times and declared that four of those alignment adjustments should be made before the pump is started up.
Jim Elsey March 2019
I have been involved with horses for most of my life.
Lev Nelik March 2019
I received good feedback from the readers on my January 2019 P&S article “Calculating vs. Estimating Pipe Velocity.” Below are some of the letters and my responses.
Jim Elsey February 2019
“If the only tool you have is a hammer, everything starts to look like a nail”… paraphrased from Dr. Abraham Maslow (“Psychology of Science,” 1966). This famous axiom is also referred to as the law of the instrument.
Jim Elsey January 2019
System designers frequently place strainers on the suction side of a pump.
Jeff Sines January 2019
Editor’s Note: Jeff Sines is a member of Ray Hardee’s team at Engineered Software Inc. This month, he is a guest columnist in Hardee’s place.
Lev Nelik January 2019
During our last Pump School session, one attendee asked how much error there would be if the velocity head and gauge elevation correction were not accounted for.
Jeff Sines December 2018
Editor’s Note: Jeff Sines is a member of Ray Hardee’s team at Engineered Software, Inc.
Jim Elsey December 2018
My last five articles covered the calculation of net positive suction head available (NPSHa).
Aasya Abdennour November 2018
Editor’s Note: Aasya Abdennour works on Ray Hardee’s team at Engineered Software and is filling in for Hardee with this month’s column.
Lev Nelik November 2018
Here are two questions on Part 1 of this article from the September issue of Pumps & Systems.