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(2) The gas utilization equipment is connected to a source of oxygen or compressed air.
(3) Liquefied petroleum gas or other supplementary gas is used as standby and might flow back into the meter. A three-way valve installed to admit the standby supply and at the same time shut off the regular supply, can be substituted for a check valve if desired.
PSC 135.355(2) (2)After 49 CFR 192.355(b)(3), insert:
(4w) At locations where service regulators might be submerged during floods, either a special anti-flood type breather vent fitting shall be installed, or the vent line shall be extended above the height of the expected flood waters.
PSC 135.355 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.365 PSC 135.365Service lines: location of valves addition [49 CFR 192.365]. After 49 CFR 192.365(b), insert:
(bw) Whenever gas is supplied to a theater, church, school, factory or other building where large numbers of persons assemble, an outside valve in such case will be required.
PSC 135.365 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.371 PSC 135.371Service lines: steel addition [49 CFR 192.371]. After the text in 49 CFR 192.371, insert:
(aw) When coated steel pipe is to be installed as a service line in a bore, care should be exercised to prevent damage to the coating during installation. For all installations to be made by boring, driving or similar methods or in a rocky type soil, the following practices or their equivalents shall be followed:
(1) When a service line is to installed by boring or driving and a coated steel pipe is to be used for the service line, the coated pipe may not be used as the bore pipe or drive pipe and left in the ground as part of the service line. Such installations shall be made by first making an oversize bore, removing the pipe used for boring and then inserting the coated pipe.
(2) Coated steel pipe may not be inserted through a bore in exceptionally rocky soil where there is a likelihood of damage to the coating resulting from the insertion.
PSC 135.371 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.375 PSC 135.375Service lines: plastic addition [49 CFR 192.375]. After 49 CFR 192.375(b), insert:
(cw) Plastic service lines that are not encased shall either be installed with an electrically conductive wire having adequate corrosion resistant characteristics or protection or some other acceptable means of readily locating the buried service pipe from the ground surface shall be provided.
PSC 135.375 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.377 PSC 135.377Service lines: copper additions [49 CFR 192.377]. After the text in 49 CFR 192.377, insert:
(aw) Copper service lines installed within a building may not be concealed.
(bw) Ferrous valves and fittings installed on underground copper service lines shall be protected from contact with the soil or insulated from the copper pipe.
PSC 135.377 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.457 PSC 135.457External corrosion control: buried or submerged pipelines installed before August 1, 1971 addition [49 CFR 192.457]. After 49 CFR 192.457 (b), insert:
(cw) Notwithstanding the provisions of 49 CFR 192.457(b) regarding active corrosion, effectively coated steel distribution pipelines, except for those portions including services and short sections that because of their nature and installation make cathodic protection impractical and uneconomical, shall be cathodically protected along the entire area that is effectively coated in accordance with this subpart.
PSC 135.457 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; CR 21-049: am. Register March 2022 No. 795, eff. 4-1-22.
PSC 135.505 PSC 135.505Strength test requirements for steel pipeline to operate at a hoop stress of 30 percent or more of SMYS addition [49 CFR 192.505]. After 49 CFR 192.505 (d), insert:
(ew) Except in freezing weather or when water is not available, pipelines or mains larger than 6 inches in diameter, installed in class locations 1, 2, or 3, shall be hydrostatically tested in place to at least 90% of the specified minimum yield strength.
PSC 135.505 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; CR 21-049: am. Register March 2022 No. 795, eff. 4-1-22.
PSC 135.511 PSC 135.511Test requirements for service lines addition [49 CFR 192.511]. After 49 CFR 192.511(c), insert:
(dw) Each segment of a service line, other than plastic, intended to be operated at a pressure between 0 and 1 p.s.i.g. shall be given a leak test at a pressure of not less than 50 p.s.i.g.
PSC 135.511 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.613 PSC 135.613Continuing surveillance additions [49 CFR 192.613]. After 49 CFR 192.613(b), insert:
(cw) When street is paved or repaved. Whenever a road or street is paved or repaved with permanent pavement, the operator shall do all of the following:
(1) Check for leaks along all mains and services in the streets and abutting property with a continuous-sampling instrument capable of detecting combustible gas in air concentrations of 100 parts per million.
(2) Determine condition of pipe and joints by sample visual examination, where possible.
(3) Repair any leaks found.
(4) Replace pipe if existing pipe is corroded to such an extent that it is likely to require replacement before the street is again resurfaced.
(dw) Underground pipes. Whenever underground pipes are exposed in order to repair leaks, the utility shall record on the repair order the nature of the leak and possible cause from observation.
PSC 135.613 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.614 PSC 135.614Damage prevention program addition. [49 CFR 192.614]. After 49 CFR 192.614 (e), insert:
(fw) All operators of natural gas pipelines shall be a member of a single, state-wide one-call system. If there is more than one state-wide one-call system, the public service commission may determine which system the operators will join.
PSC 135.614 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; CR 21-049: am. Register March 2022 No. 795, eff. 4-1-22.
PSC 135.621 PSC 135.621Maximum allowable operating pressure: high-pressure distribution systems additions [49 CFR 192.621].
PSC 135.621(1)(1)After 49 CFR 192.621(a)(3), insert:
(3w) No person may operate a segment of a cast iron pipe.
PSC 135.621(2) (2)After 49 CFR 192.621(b), insert:
(cw) Sixty p.s.i.g. in individual distribution systems or portions of a system. The intercity or supply mains for these distribution systems may be operated at pressures higher than 60 p.s.i.g. if the number of services supplied from these mains are limited and these mains are not an integral part of the distribution system. The pressure and the services supplied from these higher pressure intercity and supply mains shall be limited to 60 p.s.i.g. unless the service lines are equipped with series regulators or other pressure limiting devices as prescribed in 49 CFR 192.197(c).
PSC 135.621 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; CR 21-049: am. (1) Register March 2022 No. 795, eff. 4-1-22.
PSC 135.623 PSC 135.623Maximum allowable operating pressure: low-pressure distribution systems addition [49 CFR 192.623]. After 49 CFR 192.623(b), insert:
(cw) No person may operate a low pressure distribution system at a pressure in excess of that provided by s. PSC 134.23 (1).
PSC 135.623 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.629 PSC 135.629Purging of pipelines addition [49 CFR 192.629]. After 49 CFR 192.629(b), insert:
(cw) No pipeline, main, or service shall be purged into any building or confined space.
PSC 135.629 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.707 PSC 135.707Line markers for mains and transmission lines addition [49 CFR 192.707]. After 49 CFR 192.707(d), insert:
(ew) When transmission lines are located outside urban areas, their location shall be marked, recognizable to the public, at each fence line, road crossing, railroad crossing, river, lake, stream, or drainage ditch crossing and wherever it is considered necessary to identify the location of a pipeline to reduce the possibility of damage or interference.
PSC 135.707 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.713 PSC 135.713Transmission lines: permanent field repair of imperfections and damages addition [49 CFR 192.713]. After 49 CFR 192.713 (a) (2), insert:
(3w) Gouges and grooves of lesser depth than 10% of the nominal wall thickness of the pipe may be removed by grinding out to a smooth contour provided the grinding does not reduce the remaining wall thickness to less than the minimum prescribed by 49 CFR 192 for the conditions of use.
PSC 135.713 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; CR 21-049: am. Register March 2022 No. 795, eff. 4-1-22.
PSC 135.714 PSC 135.714Addition [49 CFR 192.714w]. After 49 CFR 192.713, insert:
192.714w Repair of Steel Pipe Operating below 40 Percent of the Specified Minimum Yield Strength. If inspections at any time reveal an injurious defect, gouge, groove, dent, or leak, immediate temporary measures shall be employed to protect the property and public if it is not feasible to make permanent repair at time of discovery. As soon as feasible, permanent repairs shall be made using recognized methods of repair.
PSC 135.714 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99 CR 21-049: PSC 135.714 renum. from PSC 135.720 and am. Register March 2022 No. 795, eff. 4-1-22.
PSC 135.722 PSC 135.722Addition [49 CFR 192.722w]. After 49 CFR 192.721, insert:
192.722w Distribution Mains: Markers. When distribution mains are located outside urban areas, their location shall be marked, recognizable to the public, at each fence line, road crossing, railroad crossing, river, lake, stream, or drainage ditch crossing and wherever it is considered necessary to identify the location of a pipeline to reduce the possibility of damage or interference.
PSC 135.722 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.723 PSC 135.723Distribution systems: leakage surveys additions [49 CFR 192.723]. After 49 CFR 192.723(b), insert:
(cw) Every operator shall maintain a gas leak-detection program and shall maintain records of operation under the program. The program shall consist of not less than the following:
(1) In addition to 49 CFR 192.723 (b) (1), a second leakage survey with a leak detection device shall be conducted over street openings in business districts, as shown by maps filed with the public service commission by each utility, each calendar year but not within 4 ½ months of the survey required under 49 CFR 192.723 (b) (1).
(2) In each business district, a building survey shall be conducted at intervals not exceeding 15 months, but at least once each calendar year. The piping from the service entrance to the meter outlet and metering and regulating equipment shall be tested for gas leakage in those buildings that have gas service.
(3) A survey of all buildings used for public gatherings, such as schools, churches, hospitals, and theaters, shall be conducted at intervals not exceeding 15 months, but at least once each calendar year. The piping from the service entrance to the meter outlet and metering and regulating equipment shall be tested for gas leakage.
(4) In incorporated cities and villages, in addition to a survey of public buildings, the operator shall conduct a leak survey of all mains using a continuous-sampling instrument capable of detecting and measuring combustible gas in air concentrations of 100 parts per million. The utility may substitute for the test required by this provision a survey by mobile flame ionization or infrared gas detection units. The tests required by this provision shall be made at intervals not exceeding 15 months, but at least once each calendar year.
(5) Along all mains in unincorporated areas, a leakage survey with leak detection equipment shall be conducted at least once every 2 calendar years at intervals not exceeding 27 months.
(6) A leakage survey of all services conducted with an acceptable leak detection device shall be made at least once every 5 calendar years at intervals not exceeding 63 months.
(7) When a leak complaint is received and the odor of gas indicates that there is a leak in or near the premises, a search shall be conducted until the leak is found.
PSC 135.723 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; CR 21-049: am. Register March 2022 No. 795, eff. 4-1-22.
PSC 135.724 PSC 135.724Addition [49 CFR 192.724w]. After 49 CFR 192.723, insert:
PSC 192.724w Further leakage survey after repair of leak. When a leak is found and repaired, a further check shall be made in the vicinity of the repaired leak to determine if there is any other source of migrant gas in the neighborhood.
PSC 135.724 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.727 PSC 135.727Abandonment or deactivation of facilities addition [49 CFR 192.727]. After 49 CFR 192.727 (g), insert:
(hw) Special efforts shall be made to include services which have not been used for ten years in a way that will remove gas from the customers' premises. The plan shall include all of the following provisions:
(1) If the facilities are abandoned in place, they shall be physically disconnected from the main at the service tee. The open ends of all abandoned facilities shall be capped, plugged, or otherwise effectively sealed.
(2) In cases where a main is abandoned, together with the service lines connected to it, insofar as service lines are concerned, only the customers' end of the service lines need be sealed.
(3) Until the time a service is abandoned, it shall be treated as active for purposes of applying the regulations of 49 CFR 192. If a service line is not treated as an active line, it shall be physically disconnected at the main and purged, no later than 2 years after becoming inactive.
PSC 135.727 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; CR 21-049: am. Register March 2022 No. 795, eff. 4-1-22.
PSC 135.735 PSC 135.735Compressor stations: storage of combustible materials addition [49 CFR 192.735]. After 49 CFR 192.735(b), insert:
(cw) All aboveground oil or gasoline storage tanks shall be constructed and protected in accordance with ch. ATCP 93.
PSC 135.735 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; correction made under s. 13.92 (4) (b) 7., Stats., Register December 2012 No. 684; correction made under s. 13.92 (4) (b) 7., Stats., Register October 2013 No. 694.
PSC 135.741 PSC 135.741Pressure limiting and regulating stations: telemetering or recording gauges addition [49 CFR 192.741]. After 49 CFR 192.741(c), insert:
(dw) Each low pressure distribution system shall be equipped with telemetering or recording pressure gage or gages as may be required to properly indicate the gas pressure in the system at all times. At least once each year the pressure variation shall be determined throughout each system.
PSC 135.741 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
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Published under s. 35.93, Stats. Updated on the first day of each month. Entire code is always current. The Register date on each page is the date the chapter was last published.