52 Pa. Code § 61.1
The following words and terms, when used in this chapter, have the following meanings, unless the context clearly indicates otherwise:
Critical valves-Valves that are deemed critical in case of emergencies or shut down.
Customer-A party supplied with steam service by a public utility.
Customer's piping-The pipe of the customer which extends from the service line termination point to the point of utilization.
Degree day-A unit used in estimating quantities of fuel and power consumption based on a daily ratio of consumption the mean temperature below 65°F.
Facilities-Mains and service lines owned or operated by a steam utility for the purpose of transporting steam from where it is produced to the customer's piping.
Failure investigation-The process of collecting and analyzing data to determine the cause of failure.
Hot water-Water heated by an energy source above its initial temperature.
Main-Piping that transports steam from where it is produced and delivers it to the beginning of the service line.
Pounds of steam-The 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 line-The pipe connecting the utility main to the customer's piping. The point of service termination is the customer's property line unless otherwise provided by contract.
Steam-Water vapor kept under pressure so as to supply energy for heating.
Steam distribution system-A system that takes steam from where it is produced and delivers it to end users.
Steam trap-A device used to discharge condensate and noncondensable gases with a negligible consumption or loss of live steam.
Steam utility-A utility that provides the public services associated with steam distribution.
Water hammer-The phenomenon that occurs when steam charges in the pipeline while condensate is present.
52 Pa. Code § 61.1
The provisions of this § 61.1 amended under the Public Utility Code, 66 Pa.C.S. § § 501 and 1501.