PSC 135.163 Compressor stations: design and construction additions [49 CFR 192.163]. (bw) All compressor station buildings shall be constructed of non‑combustible materials as defined under s. Comm 51.01 (86).
Section. 5. PSC 135.163 (1) (Note) is repealed.
Section 6. PSC 135.204 is renumbered PSC 135.206 and amended to read:
192.204w 192.206w Pipelines on private right-of-way of electric transmission lines. Where gas pipelines parallel overhead electric transmission lines on the same right-of-way, the company operating the pipelines shall take the following precautions:
(a) Employ blow-down connections and relief valve vents that will direct the gas away from the electric conductors.
(b) Make a study in collaboration with the electric company on the common problems of corrosion and electrolysis, taking the following factors into consideration:
(1) The possibility of the pipeline carrying either unbalanced line currents or fault currents.
(2) The possibility of lightning or fault currents inducing voltages sufficient to puncture pipe coatings or pipe.
(3) Cathodic protection of the pipeline, including location of ground beds, especially if the electric line is carried on steel towers.
(4) Bonding connections between the pipeline and either the steel tower footings or the buried ground facilities or the ground-wire of the overhead electric system.
(c) Investigate the necessity of protecting insulating joints in the pipeline against induced voltages or currents resulting from lightning strokes strikes. Such The protection can be obtained by connecting buried sacrificial anodes to the pipe near the insulating joints or by bridging the pipeline insulator with a spark-gap or by other effective means.
Section 7. PSC 135.321 is renumbered PSC 135.321 (1) and (2) and amended to read:
(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.
(gw) (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.
(hw) (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.
(4) Miter bends are not permitted.
(iw) (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 tampered tamped earth or other continuous support shall be used.
Section 8. PSC 135.457 is amended to read:
PSC 135.457 External corrosion control: buried or submerged pipelines installed before August 1, 1971 addition [49 CFR 192.457]. After 49 CFR 192.457(c) 192.457 (b), insert: (dw) (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. Section 9. PSC 135.505 is amended to read:
PSC 135.505 Strength 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(e) 192.505 (d), insert: (fw) (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.
Section 10. PSC 135.614 is amended to read:
(dw) (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.
Section 11. PSC 135.621 (1) is amended to read:
PSC 135.621 Maximum allowable operating pressure: high-pressure distribution systems additions [49 CFR 192.621]. (3w) No person may operate a segment of a cast iron pipe in which there are unreinforced bell and spigot joints at a pressure higher than low pressure unless it can be proven to the commission that they can be operated at a higher pressure. However, the maximum allowable operating pressure under any circumstances shall not exceed 15 p.s.i.g. Except for maintenance of existing mains, no new cast iron may be installed after November 1, 1999.
Section 12. PSC 135.713 is amended to read:
PSC 135.713 Transmission lines: permanent field repair of imperfections and damages addition [49 CFR 192.713]. After 49 CFR 192.713(a)(3) 192.713 (a) (2), insert: (4w) (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. Section 13. PSC 135.720 is renumbered PSC 135.714 and amended to read:
192.720w 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.
Section 14. PSC 135.723 is amended to read:
(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), an additional 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, at intervals not exceeding 15 months, but at least once each calendar year and but not more [less] than within 4 ½ months before or after 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.
