Trunkline LNG Company, LLC

Second Revised Volume No. 1-A

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Effective Date: 08/01/2003, Docket: RP03-535-000, Status: Effective

Original Sheet No. 109 Original Sheet No. 109 : Effective






13. MEASUREMENT (Continued)


(C) The density of the LNG shall be calculated using the

revised Klosek and McKinley method.


(D) The temperature of the LNG contained in the tanks of

any Shipper's Vessel shall be determined by using the

arithmetic average of the temperature indicated by

special thermo-couples or resistance thermometers

spaced at various locations from top to bottom of

each tank with an accuracy of plus or minus two-

tenths of a degree centigrade. Such temperatures

shall be either logged or printed.


(E) Samples of the LNG shall be taken with a frequency

adequate to assure a representative analysis of the

LNG being loaded or unloaded, at a suitable point

between the receipt discharge Point and TLNG's

storage facilities. The sampling device shall be

such as to permit the total and continuous

vaporization of a quantity of LNG sufficient for the

taking of a gaseous sample representative of the LNG

then being received or delivered. Such samples shall

be analyzed by means of a suitable gas chromatograph.

An analysis or the average of such analyses shall

determine the molecular composition of the LNG. A

calibration of the chromatograph utilized shall be

performed before the analysis of the samples taken

from each unloading. Representatives of Shipper

shall have the right to be present, but the absence

of a duly summoned representative of Shipper shall

not prevent the carrying out of calibration and

sampling. Such calibration shall be effected with

the aid of a gaseous mixture having a known

composition closely similar to the vaporized LNG

being measured.


(F) The Gross Heating Value of LNG shall be calculated on

the basis of its molecular composition and of the

molecular weights and the Thermies per kilogram of

each of its components. The values of physical

constants to be used for such calculations shall

conform to those contained in the most current

publications of the National Bureau of Standards of

the United States.