Tuscarora Gas Transmission Company
Original Volume No. 1
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Effective Date: 12/01/1995, Docket: CP93-685-003, Status: Effective
Original Sheet No. 55 Original Sheet No. 55 : Effective
GENERAL TERMS AND CONDITIONS
10.6 Deviation From Boyle's Law. The deviation of the natural gas from
Boyle's Law shall be determined by the use of the table of formulas
published by the American Gas Association Par Research Project NX-19
corrected for carbon dioxide and nitrogen, or any superseding
applicable tables published by the American Gas Association.
Determinations of the molecular percentage of N2 and C02 in the gas
shall be made within 30 days after commencement of deliveries and at
least quarterly thereafter. The molecular percentage of N2 and C02
thus determined will be used to determine the supercompressibility
factors during the ensuing period, with corrections for specific
gravity, temperature and pressure.
11. MEASURING EQUIPMENT
11.1 Measuring Station. Transporter will install, maintain and operate
at or near the Delivery Point(s), a measuring station properly
equipped with meters, and other necessary measuring equipment by
which the volume of natural gas made available to or on behalf of
Shipper shall be measured and determined in accordance with Section
9 of these General Terms and Conditions.
(a) Orifice Meters. Orifice meters, if used, shall be installed,
and gas quantities computed, in accordance with American National
Standard Bulletin ANSI/API 2530, Orifice Metering Of Natural Gas,
dated June 1979, and any modification and amendments thereof, and
shall include the use of flange connections and straightening vanes.
(b) Diaphragm or Turbine Meters. Diaphragm or turbine meters, if
used, shall be installed, and gas quantities computed, in accordance
with generally accepted industry practices.
(c) Electronic Flow Computers. Electronic or other types of flow
computers, if used, shall be installed, and quantities calculated in
accordance with generally accepted industry practices.
(d) New Measurement Techniques. If at any time a new method or
technique is developed with respect to gas measurement or the
determination of the factors used in such gas measurement, such new
method or technique may be substituted upon receipt of Commission
authorization or in accordance with generally accepted industry