Valero Interstate Transmission Company
First Revised Volume No. 1
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Effective Date: 11/01/1991, Docket: GT91- 42-000, Status: Effective
Original Sheet No. 55 Original Sheet No. 55 : Superseded
GENERAL TERMS AND CONDITIONS
d. Vitco shall be responsible for the taking of samples at the
Delivery Point for the determination of the heating value of the
gas delivered. The results shall be applied to gas deliveries for
the day on which the sample is taken and for following days until
a new sample is taken. Shipper shall have the right to witness
the sampling and/or the Btu determination performed by Vitco.
e. The flowing temperature of the gas shall be determined by the
means of a recording thermometer of standard make acceptable to
both Vitco and Shipper, and the average reading each day during
which gas was flowing shall be deemed the gas temperature and
used in computing the volumes of gas delivered and redelivered
during such day.
f. The specific gravity of the gas shall be determined upon initial
receipt and redelivery and thereafter once each month at the
point where gas is metered hereunder, and the results of such
determination shall be used in computing the volumes of gas
metered at such point during the following calendar month. A
gravitometer of standard make and checked by the method pre-
scribed in American Petroleum Institute code No. 5O-A and
amendments thereto shall be used to determine the gravity, or at
Vitco's option, the gravity shall be determined by means of a
recording gravitometer of standard make and the average reading
each day during which gas was flowing shall be used in computing
the volumes of gas metered at such point during such day.
g. The measurement shall be corrected for the deviation of gas from
Boyle's law at the pressures and temperatures under which gas is
delivered and redelivered hereunder.
h. For the purposes of measurement and meter calibration, the atmos-
pheric pressure shall be assumed to be constant at fourteen and
seven-tenths (14.7) pounds per square inch, irrespective of
variations in natural atmospheric pressure from time to time.
i. The water content shall be determined by such intervals as shall
be found necessary in practice by use of a Bureau of Mines dew
point tester and utilizing tables derived from Illinois Gas
Institute Research Bulletin No. 8 or by such other table or
method as shall be mutually agreed upon.