Pacific Interstate Transmission Company

Original Volume No. 1

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Effective Date: 10/01/1981, Docket: GT97- 67-000, Status: Effective

Origianl Sheet No. 107 Origianl Sheet No. 107 : Effective











3.1 Unit of Measurement and Measurement Base: The volumetric measurement

base of all volumes of gas referred to in any Service Agreement or this

FERC Gas Tariff, Original Volume No. 1 shall be one cubic foot of gas

at a pressure base of 14.73 psia, at a temperature base of 60oF and

without adjustment for water vapor content.


3.2 Computation of Volume from Meter Readings and Registrations:


3.21 Seller, Buyer and Transporter shall endeavor to agree upon

methods so that volumes of gas delivered under Buyer's Service

Agreement shall be computed in accordance with the latest

approved methods in use in the industry generally.


3.22 When orifice meters are used, gas volumes shall be computed in

accordance with the specifications prescribed in the latest edi-

tion from time to time of "Orifice Metering of Natural Gas--Gas

Measurement Committee Report No. 3" published by the American Gas

Association, including any appendices and amendments thereto or

accepted industry standards agreeable to all parties.


3.23 If positive displacement and turbine meters are used, measure-

ments of the volumes received or delivered at flowing pressures

and temperatures shall be corrected to the volumetric measurement

base by the application of proper correction factors for (a)

absolute static pressure, (b) flowing temperature and (c) super-

compressibility. If an integrating device is used, correction

for the deviation from Boyle's Law may be built into the device;

otherwise such correction shall be applied to the volume of gas




3.3 Flowing Temperature: The flowing temperatures of the gas shall be

determined by the use of standard continuously recording thermometers.

The flowing temperatures used in determining the flowing temperature

factor for each meter chart shall be the arithmetical average of the

temperatures at each hour shown by the recording thermometers during

the period of time covered by the meter chart, during periods of flow