Oregon Administrative Rules
Chapter 860 - PUBLIC UTILITY COMMISSION
Division 23 - SERVICE STANDARDS
Section 860-023-0045 - Heating Value

(1) Each gas utility shall file with the Commission, as part of its schedules of rates or rules and regulations, the average total heating value of the gas and the indicated maximum expected fluctuation above and below the average total heating value which may be expected of a gas supplied by it in each district, division, or community served.

(2) In maintaining the established heating value, the chemical composition, and specific gravity shall be such as to attain satisfactory combustion in the customer's appliances at all times without repeated readjustment of the burners.

(3) When supplemental or substitute gas is distributed by a utility, the gas quality shall be such that the usage performance will be satisfactory, regardless of the heating value of the gas.