Southern Natural Gas Company

Seventh Revised Volume No. 1

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Effective Date: 05/05/2008, Docket: RP04- 42-003, Status: Effective

Second Revised Sheet No. 109 Second Revised Sheet No. 109 : Effective

Superseding: First Revised Sheet No. 109




Section 3.3 (continued)


The water content shall be determined at such intervals as shall be found

necessary in practice, by the use of dew point apparatus approved by the

Bureau of Mines and utilizing curves for "Water Vapor Content of

Compressed Natural Gas" comprising Figure 41 to Bureau of Mines, U.S.

Department of the Interior, Monograph 8 "Gas Hydrates and Their Relations

to the Operation of Natural-Gas PipeLines," or by such other curve or method

as shall be mutually agreed upon.


3.4 Should any gas delivered to COMPANY fail at any time to conform to any

of the specifications provided for in Section 3.1(a)-(f), COMPANY shall notify

SHIPPER of any such failure and may at its option suspend all or a portion

of the receipt of any such gas, and COMPANY shall be relieved of any of its

obligations for the duration of such time as the gas does not meet such

specifications. Upon receipt of COMPANY'S notice of such a failure,

SHIPPER shall, at its option, either terminate deliveries into COMPANY'S system

or make a diligent effort to correct such failure by treatment or dehydration

consistent with prudent operation so as to deliver gas conforming to the

specifications provided for in this Section 3. Any gas delivered to COMPANY that

fails to meet an HDP Specification issued pursuant to Section 3.1(g) shall be

handled in accordance with the procedures set out in said section.




4.1 Unit of Volume:


The unit of volume shall be a cubic foot.


4.2 Measurement of Volume:


(a) When gas is delivered at a pressure different from 14.73 pounds per

square inch absolute, then for the purpose of measurement hereunder,

such volumes of gas shall be corrected to a pressure of 14.73 pounds

per square inch absolute. It is assumed that the atmospheric pressure

is 14.4 pounds per square inch or such other pressure as agreed upon

by COMPANY and SHIPPER. The measurement of gas volumes shall

be adjusted for deviation from Boyle's Law in accordance with

generally accepted engineering practice; provided, however, that where

gas is delivered through positive displacement meters at a pressure not

in excess of 20 pounds per square inch gauge, the gas may be assumed

to obey Boyle's law.


(b) Where orifice meters are used, volumes delivered shall be computed

in accordance with formulae, tables and methods prescribed in Orifice

Metering of Natural Gas and Other