255.1 Scope.

(a)This Part prescribes minimum safety requirements for the design, fabrication, installation, inspection, testing and operation and maintenance of gas transmission and distribution systems, including gas gathering lines, gas pipelines, gas compressor stations, gas metering and regulating stations, gas mains, service lines, gas storage equipment of the closed pipe type fabricated or forged from pipe or fabricated from pipe and fittings, and gas storage lines not covered by 49 CFR 192.#

(b)Every person engaged in the transportation of gas via pipeline within the State of New York shall comply with the rules set forth in this Part.#

(c)This Part is based on and includes many of the requirements set forth in title 49, Code of Federal Regulations, part 192 Department of Transportation Regulations for Transportation of Natural and Other Gas By Pipeline: Minimum Federal Safety Standards. The rules and regulations expressed or implied by this Part meet or exceed those Minimum Federal Safety Standards.#

(d)This Part does not apply to:#

(1)design and fabrication of pressure vessels covered by the ASME Boiler and Pressure Vessel Code;#

(2)piping with metal temperatures above 450°F (232°C) or below minus 20°F (-29°C);#

(3)the design, fabrication and installation of aboveground or inside piping and appliances beyond the outlet of the customer's meter set assembly (refer to Part 261 and NFPA 54);#

(4)piping in oil refineries or natural gasoline extraction plants, gas treating plant piping other than the main gas stream piping in dehydration and all other processing plants installed a part of the gas transmission system, gas manufacturing plants, industrial plants or mines;#

(5)vent piping to operate at substantially atmospheric pressures for waste gases of any kind;#

(6)wellhead assemblies, including traps or separators, heaters, control valves, and flow lines of less than 100 foot (30.5 meters) in length between the wellhead and trap or separator, or casing and tubing in gas or oil wells (flowlines of greater than 100 feet (30.5 meters) in length between the wellhead and trap or separator are considered to be gathering line);#

(7)proprietary items of equipment, apparatus or instruments;#

(8)heat exchangers;#

(9)liquid petroleum transportation piping systems; and#

(10)prefabricated units which employ plate and longitudinal welds as contrasted to pipe;#

(11)any pipeline that transports only petroleum gas or petroleum gas/air mixtures to:#

(i)fewer than 10 customers, if no portion of the system is located in a public place; or#

(ii)a single customer, if the system is located entirely on the customer's premises.#