11-Year-Old Source of Forced Outages Found
Main oil pump hydraulic geometry was the root cause of numerous false turbine/generator overspeed trips.Troubleshooting rotating equipment failures and improving reliability is a process of...
Pumps & Systems, September 2007 In the past, the nuclear power industry has experienced equipment failures due to improperly set oilers. There was never a precision tool available to help ensure...
Pumps and Systems, March 2009 Enveloping is a tool that can give more information about the life and health of important plant assets. It is primarily used for early detection of faults in rolling...
Pumps and Systems, April 2009 Editor's Note: This is the second part of a two part series of how adjustable frequency drives work. To read part one, click here. Last month, we looked at...
In the foothills of the Andes, among the sprawling vineyards of picturesque Mendoza, Argentina, stands an innocuous equipment cabinet located by the side of an infrequently used mountain pass. The...
Pumps and Systems, February 2007 On July 16 last year, a high-speed centrifugal pump failed catastrophically at a large refinery in South America, causing production losses and costing a substantial...
Pumps and Systems, May 2009 Comparing the vibration performance of identical or like machines can be used to detect defects and judge their severity. What is Comparative Analysis? Comparative...
Pumps & Systems, January 2009  The residents of Orlando and nearby communities are more likely to see lightning strike than have their toilets run dry. Extensive high-tech upgrades at...
Pumps & Systems, September 2007Why question the PLC? For many, questioning the application of a PLC to the pump station panel is surprising. After all, the pump station panel was once controlled...
Pumps & Systems, February 2009 In the power industry, clean water is crucial for a variety of tasks, including extending the service life of turbine seals and protecting spray nozzles and heat...
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...
VIL pumps and design envelope technology reduce energy use and cool Toronto’s downtown.
Pumps & Systems, February 2009 In the oil and gas industry, custody transfer transactions involve transporting physical substance from one operator to another, including transferring raw and...
Pumps and Systems, June 2009Adjustable Frequency Drive Application and UseIn the early days of adjustable frequency drive (AFD) technology, the typical application was in process control for...
Efficient AODD Pump Operation
Eliminating dry running can save money and protect equipment.
Pumps and Systems, May 2009 Explore hermetically sealed gauging probes for hostile environments like saw mills and wood processing plants. Electronic gauging probes are commonly used in the...
Energy Savings with a Servo-Electric 
Pump Drive
This drive optimizes hydraulic presses from a technical and energy efficiency perspective.
Field Balancing
One common definition of balance is when the mass centerline and the rotational centerline of a rotating part are equal. Another definition is when zero vibratory force or vibratory motion is imparted...
Pumps and Systems, May 2009 Balancing is essential for minimizing vibration, increasing bearing life and minimizing downtime and repair costs. Follow the guidelines from these standards to balance...
Pumps and Systems, March 2009 Any time a measuring instrument is used in a plant, it is expected to provide reliable results.  This is especially true in closed pipeline systems in which it is...
Figure IR1 Figure 1 shows a typical three-phase fused power disconnect. The corresponding infrared image, Figure IR1, was taken with the emissivity setting at 1 on our thermal imager. The temperature...
Pumps & Systems, February 2009 Last month, we discussed thermal radiation and material properties and the thermal nature of materials. We also looked at the emissivity of real objects using a...
Hydraulic Institute Pump FAQs April 2012
Q. What is the recommended instrumentation that should be used for measuring bearing housing vibration on rotodynamic pumps?A.  For all speeds, a 6-decibel per octave filter shall be used to...
Although the cost of a component inside a hydraulic pump, such as a rolling element bearing, rotor or fastener, is often low compared to the total cost of the pump, the costs of production downtime...
Pumps and Systems, May 2009 With the growth of wind farms, users are turning to condition monitoring and automatic lubrication systems for increased reliability. The scope of this year's Windpower...
Pumps & Systems, February 2009 A dangerous misconception exists regarding the "Arc Rating" of infrared (IR) windows or viewing panes. Many reliability and maintenance professionals are under the...
Pumps & Systems, September 2007 Economic pressures to minimize production downtime and improve operating efficiency are increasing the emphasis to accomplish on-site problem detection, analysis,...
Pumps and Systems, May 2009 Find out why level controls can fail in municipal wastewater treatment plants and similar systems and what technologies are available to combat failure. Leaving the...
Pumps and Systems, May 2009 One of the most neglected tools in the vibration analysis toolbox is phase. This neglect is partially due to the extra time and effort often necessary to collect the...
Although the use of transmitters in pressure measurement is growing, mechanical pressure gauges are still used on most systems as local pressure display to back up electrical readings. The selection...