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Title: Precision Alignment: The Micro-Alignment Telescope And Laser Alignment Systems
Author: Alastair J. Campbell
Source: American Gas Association 1981
Year Published: 1981
Abstract: Precision alignment is something that is required in this day and age to prevent mechanical failures on both reciprocating and centrifugal equipment. It is the purpose of this paper to give some insight into optical and laser alignment methods used in measuring cold alignment plus the movement of compressors from their cold, shutdown position, to hot, operating position, and from such measurements determine the best alignment for operating said units, be they reciprocating or centrifugal type compressors. Many gas transmission pipelines have reciprocating type compressors and gas turbine driver centrifugal compressors moving millions of cubic feet of gas per day alt over North America.

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