Pre-Alignment Steps for Better Alignments in 2014

January 2, 2014

It is a good idea to complete a few pre-alignment steps prior to conducting any alignment activity.  For instance: Verify a possible misalignment condition by using a condition monitoring technology such as vibration analysis or thermography when possible.  This will help to identify the type of misalignment condition that is present, and any other conditions […]

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Design, Installation and Startup Effects on Equipment Alignment

August 1, 2013

Design, installation and startup are the biggest contributors to a reliable or unreliable plant.  It is difficult or impossible for a Maintenance Department to overcome issues inserted during one of these stages. Unfortunately, most often the focus is placed on fixing the equipment after some functional failure has occurred.  The focus should be placed on […]

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Size Matters! Don’t be fooled by the size of the equipment you must precision align.

April 9, 2013

A lot of maintenance employees believe that small machine trains can be precision aligned more quickly and easily than larger machine trains. This is not always the case!  Smaller machine trains are usually less rigid. This can cause the alignment to shift as the anchor bolts are tightened.  Almost all small machine trains have some […]

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Taking the Heat out of Thermal Growth Issues – Part 1

March 12, 2013

Taking the Heat out of Thermal Growth Issues – Part 1 by Daus Studenberg “Thermal growth” often refers to the change in machinery positions as a machine runs from startup to operating conditions (or vice versa). Machinery positional change can also be caused by dynamic forces, pipe stress and other factors. Compensating for thermal growth […]


Thermal Growth: How to Identify, Quantify and Deal with its Effects on Turbomachinery

June 27, 2012

TURBOMACHINERY INTERNATIONAL • May/June 2012 Thermal growth, as used in the field of machinery alignment means machine frame expansion resulting from heat generation. The generation of heat, of course, is caused by operational processes and forces. Materials subjected to temperature changes from heat generation will expand by precise amounts defined by their material properties. In […]

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“Hot” Alignment Checks only tell half the story!

July 25, 2011

Hot alignment checks are often unsuccessful because of delays in installing measuring devices on the equipment which has just been shut down. Even when good planning and organization allowed you to take readings within minutes of shutdown, these readings only address the so called “Thermal Growth”. Often the effects of thermal growth on alignment had […]