GENERAL PROVISIONS
§ 61.1. Definitions.
The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:
Critical valvesValves that are deemed critical in case of emergencies or shut down.
CustomerA party supplied with steam service by a public utility.
Customers pipingThe pipe of the customer which extends from the service line termination point to the point of utilization.
Degree dayA unit used in estimating quantities of fuel and power consumption based on a daily ratio of consumption the mean temperature below 65°F.
FacilitiesMains and service lines owned or operated by a steam utility for the purpose of transporting steam from where it is produced to the customers piping.
Failure investigationThe process of collecting and analyzing data to determine the cause of failure.
Hot waterWater heated by an energy source above its initial temperature.
MainPiping that transports steam from where it is produced and delivers it to the beginning of the service line.
Pounds of steamThe quantity of steam supplied, measured in pounds and equal to the same amount of water, which would result from condensing the steam used by the customer.
Service lineThe pipe connecting the utility main to the customers piping. The point of service termination is the customers property line unless otherwise provided by contract.
SteamWater vapor kept under pressure so as to supply energy for heating.
Steam distribution systemA system that takes steam from where it is produced and delivers it to end users.
Steam trapA device used to discharge condensate and noncondensable gases with a negligible consumption or loss of live steam.
Steam utilityA utility that provides the public services associated with steam distribution.
Water hammerThe phenomenon that occurs when steam charges in the pipeline while condensate is present.
Authority The provisions of this § 61.1 amended under the Public Utility Code, 66 Pa.C.S. § § 501 and 1501.
Source The provisions of this § 61.1 amended December 1, 2017, effective December 2, 2017, 47 Pa.B. 7314. Immediately preceding text appears at serial pages (239219) to (239220).
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