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Title: Operation & Maintainance Of Regulators
Author: Mark Windsor
Source: 2004 International School of Hydrocarbon Measurement
Year Published: 2004
Abstract: There has been much written on the assembly and the principle operation of regulators. In fact each manufacturer provides a written statement on the operation of each of its regulators as well as the method of dissembling and assembling the regulators when overhauls are needed. I was involved for ten years in the testing and overhauling of stations in the field. Part of my job was to test and prove operation of regulators we were currently using as well as determine through destructive testing, what regulators we would use and would not use. I have directed the repair and overhaul of well over 10,000 stations across Texas used for the delivery of gas to town plants, districts, or large industrial plants or colleges. Many times the literature provided by the manufacturer can only be understood by personnel with a clear understanding of the operation or the language used when describing regulators. However, over the years many of the people dealing with regulators have adopted their own language. For this reason many times much of the most critical information needed to understand how to select a regulator is not reviewed. After it is installed, the field operator is either unaware of how to correct problems by altering the regulator with factory parts or cannot correctly identify the problem and report it in a manner which will lead to a resolution. Some operators feel they are not in a position to report it, therefore resolutions are never found. This usually leads to the keeping of higher pressures on the outlet side than are necessary. In short, LUG is increased, system maintenance is increased, leak investigations are increased, gas velocities are significantly decreased and profits are significantly decreased just to name a few problems. I would like to provide you with a method of determining which stations can be set to properly control gas flow and pressure in a manner which will be efficient and profitable. When setting stations to flow with other stations on the same line, other knowledge is needed in order to ensure that all will be flowing in order to meet the target pressure. Setting all the stations to flow at exactly the same pressure on a looped system only ensures that some will be flowing and some will not at a time when they are all needed.

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