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Title: Chart Auditing Procedure And Techniques Used In Auditing Meter Charts To Verify Original Volumes
Author: Fred R Anderson
Source: 1998 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1998
Abstract: Chart auditing is intended to verify the accuracy of original volume calculations. The audit procedure for gas charts used in custody transfer is established by contract. This procedure allows that within a time certain period after the flow charts are originated, the party or parties financially interested in the resultant volumes are allowed specific audit rights on the determination of the original volumes. These rights are to receive the gas charts of interest along with pertinent data sufficient that the auditor may independently develop volumes to compare to the original ones. A specific tolerance of computed volumes is contractually allowed. If this tolerance is exceeded in specific areas as discovered by the auditor, a challenge to the original volume determination may be made. The audit process goes a long way to insure proper oversight in the area of volume determinations.




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