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Title: Chart Processing
Author: Richard A. Manson
Source: 1975 Appalachian Gas Measurement Short Course
Year Published: 1975
Abstract: Many individuals not familiar with the details of chart processing may feel that the basic methods have not advanced as they should. However, I am sure that those involved in chart processing feel that significant strides in the areas of accuracy and efficiency have been achieved. The intent of this paper is to present some concepts of accurate and efficient chart processing and the role of the office and field in chart processing. Since many of these concepts relate to Columbia Gas Transmission Corporations chart processing operation, I feel the following background will be helpful. The chart processing office receives approximately 17,000 orifice and auxiliary instrument charts each month from approximately 4,200 meters. These meters are located in a seven state operating territory and vary from a 2 tube with a .250 orifice to a 20 tube with an 8 orifice. We have 24 hour, 24 hour DOG, 72 hour, 7 day, 8 day, and 31 day chart drives on Foxboro and Barton Gages. The meters measure production, purchase, storage, wholesale sales, and company use volumes. Chart processing equipment consists of UGC Analog Scanner with Foxboro Scan Head, UGC Digital Scanner with Foxboro and American Meter Scan Head, two UGC Chart Analyzers, two Rockwell Integrators and two UGC Electronic Chart Averages. Chart data entry is via IBM 3740 Data Entry System, and calculation and billing are performed on an IBM 360 Model 40 128K. In addition, approximately 4,000 orifice charts from large volume supplier purchases are audited each month.

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