N.Y. Comp. Codes R. & Regs. tit. 16 § 226.11

Current through Register Vol. 46, No. 25, June 18, 2024

Section 226.11 - Fixed pressure factor measurement installations-general conditions and installation and accuracy maintenance requirements

For customers receiving gas at pressures higher than the normal delivery pressure, the utility may apply to department staff for approval to utilize the fixed pressure factor measurement method of determining corrected actual gas usage. The fixed pressure factor measurement method, where a constant elevated pressure is supplied to a meter, is a means of correcting volume indicated on the meter index to base pressure conditions as specified in the utility's tariff schedule.

(a) Fixed pressure factor measurement methodology. Where fixed pressure factor measurement is used, the amount of gas consumption shall be multiplied either mechanically or by a calculated factor derived from the following formula:

Billing multiplier = ((Pb+Pm)/P _B)

Where Pb is the average barometric pressure for the utility's service area(s), measured in PSI. Pm is the delivery or metering pressure measured in PSIG and P _Bis the base condition pressure defined in the utility's tariff schedule.

(b) Correction for average barometric pressure. Where the average barometric pressure varies by more than 0.10 PSIA within the utility's franchise territory, the average barometric pressure for that geographic location shall be calculated based on that location's elevation above sea level.

(c) Fixed pressure measurement installation requirements. At each installation where fixed pressure factor measurement is utilized, the following installation requirements must be met:

(1) The outlet set pressure to the customer's meter will be maintained under operating conditions to within +- 1.0 percent of the absolute set pressure.

(2) Each pressure regulator shall be protected in a manner that would clearly indicate any unauthorized tampering with the outlet pressure adjustment screw.

(3) All fixed pressure factor measurement installations shall be clearly identified with the pressure regulation outlet set pressure and the billing multiplier.

(d) Fixed pressure factor accuracy maintenance requirements. The utility shall, at each fixed pressure factor measurement installation, verify the pressure regulation outlet set pressure initially and at periodic intervals, no less frequent than annually, thereafter. No fixed pressure factor measurement installation shall be installed or left in service where the resulting overall measurement proof is less than 99.0 percent nor more than 101.0 percent.

(e) Fixed pressure factor measurement records. The utility shall maintain records of all active fixed pressure factor measurement installations and the results of any maintenance performed at each installation.

N.Y. Comp. Codes R. & Regs. Tit. 16 § 226.11