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(3w) If there are large rocks in the material to be used for backfill, care should be used to prevent damage to the coating or pipe by such means as the use of rock shield material, or by making the initial fill with rock free material to a sufficient depth over the pipe to prevent damage.
(4w) Where flooding of the trench is done to consolidate the backfill, care shall be exercised to see that the pipe is not floated from its firm bearing on the trench bottom.
PSC 135.319(3) (3)After 49 CFR 192.319(c), insert:
(cw) The provisions of 49 CFR 192.319(a) shall also apply to mains operating at less than 20% of the SMYS.
PSC 135.319 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.321 PSC 135.321Installation of plastic pipe additions [49 CFR 192.321].
PSC 135.321(1)(1)After 49 CFR 192.321 (f), insert:
(fw) The casing pipe shall be reamed and cleaned to the extent necessary to remove any sharp edges, projections, or abrasive material which could damage the plastic during and after insertion. That portion of the plastic piping which spans disturbed earth shall be adequately protected by a bridging piece or other means from crushing or shearing from external loading or settling of backfill. Care shall be taken to prevent the plastic piping from bearing on the end of the casing.
PSC 135.321(2) (2)After 49 CFR 192.321 (i), insert:
(jw) Care shall be exercised to avoid rough handling of plastic pipe and tubing. It shall not be pushed or pulled over sharp projections, dropped or have other objects dropped upon it. Caution shall be taken to prevent kinking or buckling, and any kinks or buckles which occur shall be removed by cutting out as a cylinder.
(kw) Changes in direction of plastic piping may be made with bends, tees or elbows under the following limitations:
(1) Plastic pipe and tubing may be deflected to a radius not less than the minimum recommended by the manufacturer for the kind, type, grade, wall thickness and diameter of the particular plastic pipe or tubing used.
(2) The bends shall be free of buckles, cracks, or other evidence of damage.
(3) Changes in direction that cannot be made in accordance with 192.321 (kw) (1) shall be made with elbow-type fittings.
(4) Miter bends are not permitted.
(Lw) Plastic piping shall be laid on undisturbed or well compacted soil. If plastic piping is to be laid in soils which may damage it, the piping shall be protected by suitable rock free materials before back-filling is completed. Plastic piping shall not be supported by blocking. Well tamped earth or other continuous support shall be used.
PSC 135.321 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99; CR 21-049; renum. 135.321 to (1), (2) and am. Register March 2022 No. 795, eff. 4-1-22.
PSC 135.323 PSC 135.323Casing addition [49 CFR 192.323]. After 49 CFR 192.323(d), insert:
(ew) Casing requirements of highway authorities shall be followed; however, construction type shall not be any less than provided by 49 CFR 192.323.
PSC 135.323 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.324 PSC 135.324Addition [49 CFR 192.324w]. After 49 CFR 192.323, insert:
PSC 192.324w Rail Crossings. Whenever a steel pipeline is installed under a railroad track and a casing is not used, the operator shall install the pipeline using the methods prescribed in Gas Research Institute report number GRI-91/0285, entitled “Guidelines for Pipelines Crossing Railroads and Highways."
PSC 135.324 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.325 PSC 135.325Underground clearance addition [49 CFR 192.325]. After 49 CFR 192.325(b), insert:
(bw) No distribution main or transmission line shall be installed under buildings.
PSC 135.325 History History: Cr. Register, October, 1999, No. 526, eff. 11-1-99.
PSC 135.355 PSC 135.355Customer meters and regulators: protection from damage additions [49 CFR 192.355].
PSC 135.355(1)(1)After 49 CFR 192.355(a), insert:
(aw) Install a check valve or equivalent if any of the following apply:
(1) The utilization equipment might induce a back-pressure.
(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:
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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.