Pine Needle LNG Company, LLC
Original Volume No. 1
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Effective Date: 05/01/1999, Docket: CP96- 52-003, Status: Effective
Original Sheet No. 45 Original Sheet No. 45 : Effective
GENERAL TERMS AND CONDITIONS
(Continued)
4. MEASUREMENTS (Continued)
(b) Quantity and Heating Value (Continued)
(iv) The temperature of the gas flowing through Pine Needle's
meter shall be determined for any day by the continuous use
of an electronic temperature sensing device so installed
that it may properly record the temperature of the gas
flowing through the meter. The arithmetic average of the
temperature sensed each 24-hour day or so much of the 24
hours as gas has been flowing, or each hour or so much of
each hour as gas has been flowing, shall be used in
computing gas quantities. Instantaneous temperature
measurements may be applied to electronic metering
instruments in lieu of averages to provide the quantity
computation.
(v) The specific gravity of the gas flowing through Pine
Needle's meter, when necessary for computing gas quantities,
shall be, unless otherwise agreed upon, determined by the
use of an online process type gas chromatograph. Arithmetic
averages either 24 hours or hourly or so much of either as
gas has been flowing shall be used in computing gas
quantities. Direct readings from the chromatograph may also
be applied to electronic metering instruments in lieu of
averages to provide on-site quantity computation.
(vi) The deviation of the gas from Ideal Gas Laws shall be
calculated following the recommendations of the ANSI
2530/API 14.3 "Orifice Metering of Natural Gas and Other
Related Hydrocarbon Fluids" (A.G.A. Report No. 3) including
the A.G.A. PAR Research Project NX-19 "Manual for
Determination of Supercompressibility Factors for Natural
Gas" or the A.G.A. Transmission Measurement Committee Report
No. 8 "Compressibility and Supercompressibility for Natural
Gas and Other Hydrocarbon Gases." If the composition of the
gas is such as to render the above procedure inapplicable,
other methods for determination of the deviation factors,
mutually agreed upon by Customer and Pine Needle, shall be
used.
(vii) The Gross Heating Value of the gas per cubic foot shall be
determined by the use of an online, suitably located and
acceptable make process type gas chromatograph.