Dauphin Island Gathering Partners

First Revised Volume No. 1

Effective Date: 10/16/2002, Docket: GT02- 43-000, Status: Effective

First Revised Sheet No. 127 First Revised Sheet No. 127 : Effective

Superseding: Original Sheet No. 127

3. MEASUREMENT

3.1 Unit of Volume:

The unit of volume shall be a cubic foot.

3.2 Measurement of Volume:

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

psia, then for the purpose of measurement hereunder, such

volumes of gas shall be corrected to a pressure of 14.73

psia. The measurement of gas volumes shall be adjusted for

deviation from Boyle's Law in accordance with generally

accepted engineering practice. For reporting and

calculation purposes, the factor used to correct to the

pressure base of 14.73 psia shall be stated to at least the

sixth decimal place.

(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

related hydrocarbons fluids, AGA Report No. 3 - ANSI/API

2530, as revised September 1985, and as such report may

hereafter be further revised (i.e. AGA Report No. 3, 1992

Edition and AGA Report No. 8), or other formulae, tables and

methods acceptable to the Minerals Management Service.

Exact measurements of inside diameters of meter tubes shall

be obtained by means of micrometer to the nearest

one-thousandth inch. The standard for Electronic Gas

Measurement shall be API Chapter 21.1. Said volumes shall

be corrected for flowing temperature and specific gravity in

accordance with the provisions of Subsections 3.2(c) and

3.2(d) below.

the purpose of measured volume correction. Volume shall be

corrected for each degree of variation in the flowing

temperature from 60 degrees Fahrenheit. The flowing

temperature will be measured by the continuous use of

temperature transducers, and shall be either (1) recorded

using digital recorders, or other mutually agreeable

recording devices in which case the temperature at which

gas was measured for the period of such record shall be the

arithmetic average of the record during the period of time

during which gas was flowing, or (2) used for on-site flow

computations in electronic flow computers in which case the

instantaneous measurement of temperature will be used in

such computations.