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Title: Effect Of Chart Interpretation Of Measurement Accuracy
Author: Vincent F. Francis
Source: 1981 Appalachian Gas Measurement Short Course
Year Published: 1981
Abstract: In the natural gas industry, measurement charts are the Cash Register of each company. These charts determine the cash flow money received and money paid-out) of a natural gas transmission company. Their accuracy is of the utmost importance. This is becoming more important recently in regard to gas purchased due to the escalating cost per MCF caused by the Natural Gas Policy Act. As an example, a gas purchase contract that was formerly 37 cents per MCF may now be 2.50 per MCF. This increase in gas purchased costs has brought about the reevaluation of many measuring stations as to their accuracy. Depending on the flow characteristics, gauges that formerly had monthly chart drives are now being changed to 7-day or 8-day drives to improve accuracy. The chart censor, or chart analyst, must verify first that all backprint information is legible and correct. This includes the placed and removed time, if the gauge is clock driven.

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