Pennsylvania Code › Title 52 - PUBLIC UTILITIES › Part I - Public Utility Commission › Subpart C - Fixed Service Utilities › Chapter 59 - GAS SERVICE › UNACCOUNTED-FOR-GAS › Section 59.111 - Unaccounted-for-gas

Current through Register Vol. 54, No. 28, July 13, 2024
(a)
Definitions
. The following words and terms, when used in this
					 section, have the following meanings, unless the text clearly indicates
					 otherwise:
Adjustments
-Gas used by an NGDC or city
						natural gas distribution operation for safe and reliable service, such as
						company use, calculable losses from construction, purging, storage migration,
						other temperature and pressure adjustments, and adjustments for heat content of
						natural gas.
Gas delivered
-Gas provided by the
						distribution, transmission, storage or production/gathering facilities of an
						NGDC or city natural gas distribution operation, regardless of use, adjusted
						for temperature or pressure variations. This category includes quantities of
						gas consumed by an end user, exchange gas supplied to another utility, gas
						delivered to transportation customers or other gas delivered to a user other
						than the utility. When bill timing issues arise, an effort shall be made to
						reasonably estimate consumption.
Gas received
-Gas that is supplied to the
						distribution, transmission, storage or production/gathering facilities of an
						NGDC or city natural gas distribution operation, regardless of use, adjusted
						for temperature or pressure variations. This category includes gas for sales,
						storage, transportation quantities, exchange gas received or other quantity of
						gas that otherwise enters the utility's facilities.
NGDC
-Natural gas distribution
						company.
UFG-Unaccounted-for-gas
-The difference
						between the total gas available from all sources and the total gas accounted
						for as sales, net interchange and company use. This difference includes leakage
						or other actual losses, discrepancies due to meter inaccuracies, variations of
						temperatures or pressures, or both, and other variants, particularly billing
						lag.
(b)
Calculation
.
(1) UFGx = Gas
					 Receivedx - Gas Deliveredx - Adjustmentsx
(2) %UFGx =
					 (UFGx/Gas Received) * 100
(3) X denotes the system type (distribution,
					 transmission, storage or production/gathering). When possible, UFG must be
					 computed and reported by system type.
(4) Gas received, gas delivered and
					 adjustments must represent actual gas quantities. Estimates may be provided but
					 must be clearly identified and have supporting justification, assumptions and
					 calculations.
(5) Adjustments must
					 be individually identified by category (such as company use, calculable losses
					 from construction, purging, storage migration, other temperature and pressure
					 adjustments, and adjustments for heat content of natural gas). Adjustments must
					 be supported by metered data, sound engineering practices or other quantifiable
					 results that clearly support the utility's need for the adjustment. Adjustments
					 must be consistent from filing to filing.
(6) The definition of "UFG" in subsection (a)
					 and the calculation under this subsection apply to UFG filed with the
					 Commission.