Gas Transmission Northwest Corp.
Third Revised Volume No. 1-A
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Effective Date: 10/06/2003, Docket: RP04- 23-000, Status: Effective
Original Sheet No. 114 Original Sheet No. 114 : Effective
TRANSPORTATION GENERAL TERMS AND CONDITIONS
5.1 Metering: The gas shall be metered by one or more orifice,
turbine, ultrasonic, displacement or other-type meters, at
the discretion of GTN. All meters shall be installed
and maintained, and volumes shall be measured,in accordance
with applicable A.G.A. standards for the meter in question.
5.2 Specific Gravity: The specific gravity of the gas delivered
hereunder shall be determined from the read-outs of
continuously operating measuring instruments. The method
shall consist of one of the following:
(b) gas chromatography
(c) other instruments acceptable to both parties
Analysis of chromatograph shall comply with the standards set
forth in ASTM D 1945. Calculation of the specific gravity from
compositional analysis by gas chromatography shall comply with
the standards set forth in ASTM D 3588. Measurement of the
specific gravity with a gravitometer shall comply with the
standards set forth in ASTM D 1070.
5.3 Flowing Temperature: Flowing gas temperature shall be
continuously measured and used in flow calculations.