| P |
| Partial Looping |
A method for increasing carrying capacity of a pipeline by constructing pipeline sections parallel to the existing pipeline for a portion of the distance between compressor or pump stations. The new lines are connected to the main pipeline at the beginning and end of each section. |
| Particulates |
Minute particles of solid matter, such as cinders and flyash, that are contained in stack gases. |
| Pb |
Lead |
| PCB |
Polychlorinated Biphenyls |
| Peak Day |
The one day (24 hours) of maximum system deliveries of gas during a year. Peak day data is used to, among other things, determine the allocation of certain costs between classes of service. The Commission'ssometimes requires allocation based on an average of three continuous days of maximum deliveries (i.e., three-day peak). See also DESIGN DAY |
| Peak Day Curtailment |
Curtailment imposed on a day-to-day basis during periods of extremely cold weather when customer demands for gas exceed the maximum daily delivery capability of a pipeline or distribution system DISTRIBUTION COMPANY. Peak day curtailment is applied independent of seasonal curtailment and does not affect overall authorized volumes to customers under seasonal curtailment. |
| PEM |
Palustrine Emergent |
| PFO |
Palustrine Forested |
| PHMSA |
pipeline & Hazardous Materials Safety Administration |
| PI |
Points of Intersection |
| Pig |
Internal Pipeline Inspection / Cleaning Device; a device used to clean or evaluate the internal surface of a pipeline (the process is called "pigging").
Pigs are usually barrel shaped, made of metal, and covered with metal brushes. They may also be made entirely of plastic and have rubber or plastic cups. They are inserted into the pipeline with a device called a pig-trap, and are pushed through the system by pressure from the fluid already flowing through the line, usually gas. They can detect imperfections and anomalies on the pipeline; also called a go-devil. |
| Pipe, Coated |
Pipe that has been covered with a corrosion resistant coating or compound (such as epoxy) to prevent corrosion from soil conditions. |
| Pipeline |
All parts of those physical facilities through which gas is moved in transportation, including pipe, valve and other appurtenances attached to pipe, compressor units, metering stations, regulator stations, delivery stations, holders, and fabricated assemblies. |
| Pipelines |
See GAS. |
| Pipeline Capacity |
The maximum quantity of gas that can be moved through a pipeline system at any given time based on existing service conditions such as available horsepower, pipeline diameter(s), maintenance schedules, regional demand for natural gas, etc. |
| Pipeline Patrol |
A general inspection of the pipeline right-of-way by foot, airplane, or land vehicle to observe surface conditions and activity along or on the right-of-way and noting changes in vegetation growth for indication of gas leakage. |
| Plan |
FERC Erosion Control, Revegetation and Maintenance Plan |
| PM |
Particulate Matter |
| PPM |
Parts Per Million |
| Psig |
Pounds per Square Inch of Gas |
| PSS |
Palustrine Scrub Shrub |
| Procedures |
FERC Wetland and Waterbody Construction and Mitigation Procedures |
| Public Convenience and Necessity |
That which is necessary or desirable in the public interest. The Commission'smust find a particular facility or service "necessary or desirable in the public interest" as a condition for granting a Certificate of Public Convenience and Necessity. |
| Public Interest |
Usually intended to mean the interest of the public, generally, as opposed to the interest of an individual or company. |
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Q |
R |
| RACT |
Reasonably Achievable Control Technology |
| Rate |
The unit charge or charges made to the customers for natural gas. |
| Rate Adjustment Provisions |
A provision in a tariff that provides for adjustments in rates or total charges because of changes in specified items of cost, such as fuel price, purchased gas, tax, etc. |
| Rate Base |
The investment value established by a regulatory authority upon which a utility is permitted to earn a specified rate of return. |
| Rate Case |
A proceeding before a regulatory Commission'sinvolving the rates to be charged for a public utility service. |
| Rate Design |
The term "rate design" refers to the method of classifying fixed and variable costs between demand DEMAND COSTS and commodity COMMODITY COSTS components. Examples of different rate designs are single rate (100% commodity COMMODITY COSTS or volumetric), two-part rates (demand DEMAND COSTS and commodity COMMODITY COSTS rates), three-part rates (two demand DEMAND COSTS and one commodity COMMODITY COSTS rate), and multiple rates (zone rates). |
| Rate of Flow |
The volume or units of a material passing a given point in a pipeline system per unit of time. |
| Rate of Return |
The return allowed to be earned (generally based on a cost of capital determination) by a utility enterprise, generally calculated by dividing the net operating income (as defined) by the rate base. |
| RCNM |
Roadway Construction Noise Model |
| Receipt Point |
The point on a pipeline's system where it receives natural gas into the system. |
| Regulation |
The governmental function of controlling, oversight or directing economic entities through the process of rulemaking, permitting or adjudication. |
| Reliability |
The degree to which the performance of the system results in the natural gas being delivered to the customers within accepted standards and in the amount desired. |
| Right-of-Way |
A strip of land, the use of which is acquired for the construction and operation of a pipeline or some other facility; the land may be owned outright or an easement taken for a specific purpose. |
| ROW |
Right-of-Way |
| RTU |
Remote Telemetry Unit |
| Rupture-Pipeline |
A failure in the pipeline for various reasons such as third party damage, corrosion, etc., where a complete loss to atmosphere of the gas or other media is sustained. |
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S |
| SCADA |
Supervisory Control and Data Acquisition |
| SCFWH |
Significant Coastal Fish and Wildlife Habitats |
| Seasonal Curtailment |
A level of service that contractually restricts or limits service during certain periods of the year. |
| SEQRA |
State Environmental Quality Review Act |
| Shipper |
One who contracts with a pipeline for transportation of natural gas, and who retains title to all natural gas while it is being transported. |
| SHPO |
State Historic Preservation Officer |
| SIP |
State Implementation Plan |
| SO2 |
Sulfur Dioxide |
| SPCC Plan |
Spill Prevention, Containment, and Countermeasure Plan |
| SPDES |
State Pollution Discharge Elimination System |
| SWPPP |
Stormwater Pollution Prevention Plan |
| Top |
T |
| T&E |
Threatened and Endangered |
| Tariff |
A gas company schedule detailing the terms, conditions, and rate information applicable to various types of natural gas service. This document is filed with and approved by FERC or a state regulatory body. |
| Temperature, Ambient |
The temperature of the air, atmosphere, or other fluid (medium) that completely surrounds the apparatus, equipment, or the work piece under consideration.
For devices that do not generate heat, this temperature is the same as the temperature of the medium at the point of device location when the device is not present.
For devices that do generate heat, this temperature is the temperature of the medium surrounding the device when the device is present and generating heat.
Allowable ambient-temperature limits are based on the assumption that the device in question is not exposed to significant radiant-energy sources such as sunlight or heated surfaces. |
| Tensile Strength |
The resistance to being pulled apart laterally; resistance to length-wise stress. |
| Therm |
A unit of heating value equivalent to 100,000 British thermal units (Btu). |
| THPO |
Tribal Historic Preservation Officer |
| Throughput |
Total of transportation volumes and tariff sales; all gas volumes delivered. |
| Tie In |
To make a connection to an existing pipeline or piping. |
| Transportation |
The act of moving gas from a designated receipt point to a designated delivery point GATE STATION pursuant to the terms of a contract between the transporter and the shipper. Generally it is the shipper's own gas that is being moved. |
| Transportation Agreement |
An agreement between a shipper and transportation company that defines the terms and conditions of the transportation services and transportation transfer to be provided. |
| Transportation Service |
The act of moving gas from a receipt point to a delivery point GATE STATION pursuant to a contract between the shipper and the transporter. To the extent the shipper has paid for guaranteed, high-priority capacity in the pipeline, that shipper is entitled to firm service. |
| Transporter |
A legal entity that has the capability of providing the service of transporting gas. Transporters include gathering companies, pipeline companies, and local distribution companies. |
| TSCA |
Toxic Substances Control Act |
| Turbine, Steam or gas |
An enclosed rotary type of prime mover in which heat energy in steam or gas is converted into mechanical energy by the force of a high velocity flow of steam or gas directed against successive rows of radial blades fastened to a central shaft. |
| Turbine Station |
A compressor station in which the power is supplied by a turbine. |
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U |
| ULSD |
Ultra Low Sulfur Diesel |
| Uncased Crossing |
In pipeline construction, a road crossing bored or open-cut without a casing pipe. |
| USACE |
United States Army Corps of Engineers |
| USDA |
United States Department of Agriculture |
| USDOT |
United States Department of Transportation |
| USEPA |
United States Environmental Protection Agency |
| USFWS |
United States Fish and Wildlife Service |
| USGS |
United States Geological Survey |
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V |
| Valve |
A mechanical device for controlling the flow of fluids and gases; types such as gate, ball, globe, needle, and plug valves are used. |
| Vent |
A device installed on a pipeline that will allow gas to escape into the atmosphere under controlled conditions. |
| Venting |
The planned release of natural gas to the atmosphere during depressurization or purging. |
| VOC |
Volatile Organic Compound |
| Top |
W |
| Wall Thickness |
Specified wall thickness of pipe without adding an allowance to compensate for the underthickness tolerances permitted in approved specifications. |
X |
Y |
Z |
| Top |
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