Centra Pipelines Minnesota Inc.
Second Revised Volume No. 2
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Effective Date: 10/16/1991, Docket: RP91-136-002, Status: Effective
Original Sheet No. 21 Original Sheet No. 21 : Effective
of the gas being delivered, or, if not installed, by sampling
the gas at intervals of not more than one (1) month.
(e) The supercompressibility factor used in computing the
volume of gas delivered through a meter shall be
determined in a manner consistent with the method
presented in the American Gas Association "Manual for the
Determination of Supercompressibility Factors for Natural
Gas" (N-X 19 Report) or American Gas Association Report
No. 8 "Compressibility and Supercompressibility for Natural
Gas and Other Hydrocarbon Gases."
(f) The average absolute atmospheric (barometric) pressure at
each metering location shall be that determined in
accordance with accepted methods irrespective of variations
in actual barometric pressure from time to time.
SECTION 9 - MEASURING EQUIPMENT
9.1 Centra presently owns, maintains and operates at its own expense,
measuring stations properly equipped with meters and other
necessary measuring equipment by which the volume of gas to be
received and delivered shall be measured.