Texas Gas Transmission Corporation

First Revised Volume No. 2-A

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Effective Date: 11/01/1990, Docket: RP90-192-000, Status: Effective

Original Sheet No. 78 Original Sheet No. 78 : Effective





volume and Btu per cubic foot shall be obtained by

use of the method contained in Gas Processors

Association Publication Number GPA 2166-86, GPA

Method for Obtaining Natural Gas Samples for Analy-

sis by Gas Chromatography.


3.8 For purposes of instrument calibration and engi-

neering formulae for volume and MMBtu computation,

30 inches of mercury shall equate to 14.73 psia.

Conversion of volumes and MMBtu to other contrac-

tual conditions shall be made from the base of

14.73 psia.


3.9 If it is determined prior to, or as a result of,

in-service tests, experience and observation by

either Customer or Transporter that pulsations

exist that affect the measurement accuracy, then

Customer will cause the installation of mechanical

dampening equipment, at Customer's expense, neces-

sary to eliminate such pulsations in agreement with

the transporter and/or operator. Any such error in

billing meter chart recordings detectable by high

speed oscilliographic analysis, fast rotation chart

drives, or similar tests resulting in a volume

computation error of greater than + .75% shall

require that the otherwise computed volume be

adjusted to compensate for the determined error.


3.10 If the method for determining the number of Btu's

in a cubic foot of gas, as set forth by the Federal

Energy Regulatory Commission (Commission) or suc-

cessor agency is revised, both parties agree that

this Agreement will be amended accordingly.


4. Measuring Equipment


4.1 Check Measuring Equipment: Customer may install,

maintain, and operate at its own expense, such

check measuring equipment as it desires at or near