Williams Natural Gas Company

Second Revised Volume No. 1

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Effective Date: 09/29/1994, Docket: CP93-327-001, Status: Effective

First Revised Sheet No. 207 First Revised Sheet No. 207 : Superseded

Superseding: Substitute Original Sheet No. 207






3. QUALITY (Cont'd)


(e) Hydrogen: Gas from crude oil refineries shall contain no more

than trace amounts of free hydrogen.


(f) Dust, Gums, etc.: The gas shall be commercially free of dust,

gums, dirt, paraffin, impurities and other solid matter.


(g) Heating Value: The gas shall have a gross heating value of

not less than nine hundred fifty (950) Btu's per cubic foot

and shall not have a hydrocarbon dew point in excess of forty

degrees Fahrenheit (40 deg. F.) as calculated from a chemical

analysis based upon an assumed pressure of seven hundred fifty

(750) pounds per square inch absolute. The term "gross

heating value" when applied to a cubic foot of gas shall mean

the number of Btu's produced by the complete combustion, at

constant pressure, of the amount of the gas which would occupy

a volume of one (1) cubic foot at a temperature of sixty

degrees Fahrenheit (60 deg. F.) corrected for water vapor.


(h) Temperature: The temperature of the gas at the receipt point

shall not exceed one hundred twenty degrees Fahrenheit (120

deg F.).


(i) Water Vapor: Gas received in Kansas, Oklahoma or Texas shall

not contain more than seven (7) pounds of water in vapor phase

per million cubic feet and gas received in Colorado or Wyoming

shall not contain more than five (5) pounds of water in vapor

phase per million cubic feet, except for gas tendered to WNG

at a receipt point where WNG owns

and operates the equipment necessary to reduce the water vapor

content of the gas to meet this requirement.


(j) Notwithstanding the provisions of paragraphs (a) through (i)

above, gas quality varies throughout segments of WNG's

pipeline system based on the function of each segment. The

quality of the gas delivered by Shipper to WNG must, in WNG's

reasonable discretion, be compatible with the gas typically

existing in the segment of WNG's pipeline into which Shipper

makes delivery.