Natural Gas Pipeline Company Of America

Seventh Revised Volume No. 1

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Effective Date: 04/18/2008, Docket: RP08-319-000, Status: Effective

Original Sheet No. 472 Original Sheet No. 472 : Pending






electronic flow computer. All specific gravity value determinations

made with a chromatograph shall use physical constants for gas

compounds as outlined in the AGA Report #3, Third Edition, October,

1990 titled "Orifice Metering of Natural Gas" or (at Natural's

discretion) any subsequent amendments or revisions to such report.

If tested against a certified standard sample, the specific gravity

determining device shall be considered correct if it shall check in

such test within ten points in the third decimal place (0.010).




(a) Unless otherwise agreed, Natural shall be the

measuring party and Natural shall operate and maintain in

satisfactory working order and condition at each Receipt Point and

Delivery Point a measuring and regulating station with such meters,

gauges, and other equipment as will make possible the determination

of the daily quantities of natural gas delivered hereunder. The

measuring stations shall be equipped with orifice meter runs,

orifice meter gauges, recording gauges, or other types of meter or

meters of standard make and design, commonly acceptable in the

industry, so as to accomplish the accurate measurement of gas

delivered hereunder. At Natural's sole option, a computer,

transducers and other associated sensing devices may be installed to

accomplish the accurate measurement of gas delivered hereunder in

place of orifice meter gauges.


(b) If Natural is not the measuring party, Shipper

agrees to comply, or to cause a third party which is the measuring

party to comply, with all applicable provisions of this Section 24.




Chromatographs, if used, shall be calibrated by the

measuring party at least weekly against a certified standard gas

sample. Other measuring equipment shall be calibrated quarterly

unless experience dictates otherwise. The other party may, at its

option, be present for such calibration and adjustment. For the

purpose of measurement and meter calibration, the atmospheric

pressure shall be derived from the Smithsonian Meteorological Tables

based on the elevation of the meter at the place of measurement,

irrespective of variations in natural atmospheric pressure from time

to time. The measuring party shall give the other party notice of

the time of all tests sufficiently in advance of conducting the same

so that both parties may conveniently have their representatives