Compressed gas means, (a) any contained mixture or material having a vapour pressure exceeding one or both of the following, (i) 275.8 kPa (absolute) at 21°C, or (ii) 717 kPa (absolute) at 54°C, or (b) any liquid having a vapour pressure exceeding 275.8 kPa (absolute) at 37.8°C. Found inside â Page 176... had to install line across three thirty-inch high-pressure gas mains, owned by Michigan-Wisconsin Pipe Line Co. Excavation across the gas lines had to be done by hand shoveling, and some of those excavations were six feet deep. 192-33, 43 FR 39390, Sept. 5, 1978]. SDR = Standard dimension ratio, the ratio of the average specified outside diameter to the minimum specified wall thickness, corresponding to a value from a common numbering system that was derived from the American National Standards Institute (ANSI) preferred number series 10. (c) All risers used to connect regulator stations to plastic mains must be rigid and designed to provide adequate support and resist lateral movement. Supervisory Control and Data Acquisition (SCADA) system means a computer-based system or systems used by a controller in a control room that collects and displays information about a pipeline facility and may have the ability to send commands back to the pipeline facility. 192-125, 84 FR 52255, Oct. 1, 2019]. (b) Each welding procedure must be recorded in detail, including the results of the qualifying tests. 192-26, 41 FR 26018, June 24, 1976, as amended by Amdt. At least once every 3 calendar years, but with intervals not exceeding 39 months. 192-124, 83 FR 58716, Nov. 20, 2018]. Use of direct assessment for threats other than the threat for which the direct assessment method is suitable is not allowed. 192-62, 54 FR 5628, Feb. 6, 1989]. Each of these affects the propagation of sound waves and influences the range of the test. (2) The analyses performed in accordance with this section must utilize pipe and material properties that are documented in traceable, verifiable, and complete records. No concrete or hard material should be placed under or adjacent to any of our gas mains. (c) Water, electric, steam, or other facilities. (d) Data analysis. Determine if the following material properties records are documented in traceable, verifiable, and complete records: Diameter, wall thickness, seam type, and grade (minimum yield strength, ultimate tensile strength). The equipment and the computer software used are critical to the success of the inspection. 192-47, 49 FR 7569, Mar. (b) Used plastic pipe is qualified for use under this part if: (2) It is resistant to chemicals with which contact may be anticipated; (3) It has been used only in gas service; (4) Its dimensions are still within the tolerances of the specification to which it was manufactured; and. (1) NFPA-30 (2012), “Flammable and Combustible Liquids Code,” 2012 edition, June 20, 2011, including Errata 30-12-1 (September 27, 2011) and Errata 30-12-2 (November 14, 2011), (NFPA-30), IBR approved for § 192.735(b). Repair procedures must provide that the minimum mechanical properties specified for the welding procedure used to make the original weld are met upon completion of the final weld repair. In this evaluation, the operator must determine the relative importance of each threat and estimate and rank the risks posed to its pipeline. (1) The toughness properties for pipe must address the potential for initiation, propagation and arrest of fractures in accordance with: (i) API Spec 5L (incorporated by reference, see, (ii) American Society of Mechanical Engineers (ASME) B31.8 (incorporated by reference, see, (iii) Any correction factors needed to address pipe grades, pressures, temperatures, or gas compositions not expressly addressed in API Spec 5L , product specification level 2 or ASME B31.8 (incorporated by reference, see. (3) If the leak is due to a corrosion pit and on pipe of not more than 40,000 psi (267 Mpa) SMYS, fillet weld over the pitted area a steel plate patch with rounded corners, of the same or greater thickness than the pipe, and not more than one-half of the diameter of the pipe in size. 5103, 60101 et. (e) Plastic pipe that is not encased must have an electrically conducting wire or other means of locating the pipe while it is underground. (b) The operator shall insure that the test medium is disposed of in a manner that will minimize damage to the environment. (a) The pipeline must be designed and installed so that each joint will sustain the longitudinal pullout or thrust forces caused by contraction or expansion of the piping or by anticipated external or internal loading. 192-85, 63 FR 37502, July 13, 1998; Amdt. 192-100, 70 FR 10335, Mar. For Federal Register citations affecting § 192.625, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov. (h) Operators in existence on June 20, 2005, must have completed their written programs no later than June 20, 2006. All materials employed for pipe and components must be designed to meet the particular conditions of service and the following: (1) Each takeoff connection and attaching boss, fitting, or adapter must be made of suitable material, be able to withstand the maximum service pressure and temperature of the pipe or equipment to which it is attached, and be designed to satisfactorily withstand all stresses without failure by fatigue. An operator does not have to schedule the following conditions for remediation, but must record and monitor the conditions during subsequent risk assessments and integrity assessments for any change that may require remediation: (i) A dent with a depth greater than 6% of the pipeline diameter (greater than 0.50 inches in depth for a pipeline diameter less than NPS 12) located between the 4 o'clock position and the 8 o'clock position (bottom1⁄3 of the pipe). Can be carried by excavators etc. In some cases these fees will also include rental and upkeep of the supply network. (2) The support must be provided by a member that completely encircles the pipe. (ii) Procedures and processes to conduct tests, examinations, assessments and evaluations, analyze defects, and remediate defects discovered. (2) In areas where deep tilling or other activities could threaten the pipeline, the top of the pipeline must be installed at least one foot below the deepest expected penetration of the soil. XV. An operator who uses internal inspection as an assessment method may be able to justify a longer reassessment period for a covered segment if internal inspection tools are not available to assess the line pipe. Producing operators for those pipeline segments upstream of the last valve of the last production facility on the OCS may petition the Administrator, or designee, for approval to operate under PHMSA regulations governing pipeline design, construction, operation, and maintenance under 49 CFR 190.9; (3) Pipelines on the Outer Continental Shelf upstream of the point at which operating responsibility transfers from a producing operator to a transporting operator; (i) Through a pipeline that operates at less than 0 psig (0 kPa); (ii) Through a pipeline that is not a regulated onshore gathering line (as determined in § 192.8); and, (iii) Within inlets of the Gulf of Mexico, except for the requirements in § 192.612; or, (5) Any pipeline system 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. (1) For PA-11 pipe produced after January 23, 2009, but before January 22, 2019, a DF of 0.40 may be used in the design formula, provided: (i) The design pressure does not exceed 200 psig; (ii) The material designation code is PA32312 or PA32316; (iii) The pipe has a nominal size (IPS or CTS) of 4 inches or less; and. Additional tests for welders of service line connections to mains. 192-25, 41 FR 23680, June 11, 1976; Amdt. It must be visually inspected to ensure that it is reasonably round and straight and there are no defects which might impair the strength or tightness of the pipe. 15 months; but at least once each calendar year. (a) If the maximum actual operating pressure of the distribution system is 60 p.s.i. (b) In Class 4 locations, at intervals not exceeding 41⁄2 months, but at least four times each calendar year. (c) In addition to meeting the requirements of paragraph (a) or (b) of this section, each plastic transmission line or main must be installed with sufficient clearance, or must be insulated, from any source of heat so as to prevent the heat from impairing the serviceability of the pipe. Examples include, but are not limited to, religious facilities, office buildings, community centers, general stores, 4-H facilities, or roller skating rinks; or. Suction excavation utilizes high powered fans to safely excavate up to 141 feet (43 meters) of depth depending on the configuration. (8) Conduct leakage surveys in accordance with the requirements for transmission lines in § 192.706, using leak-detection equipment, and promptly repair hazardous leaks in accordance with § 192.703(c). [35 FR 13257, Aug. 19, 1970, as amended at 86 FR 2242, Jan. 11, 2021]. It can be used on railways (perhaps mounted on a railroad car base) to suck old track ballast off the track when re-ballasting the track. (5) Actions directed toward protecting people first and then property. (c) Assessment for particular threats. The integrity management program must include the following elements: (i) A plan for developing and implementing each program element to meet the requirements of this section; (ii) An outline of the procedures to be developed; (iii) The roles and responsibilities of UNGSF staff assigned to develop and implement the procedures required by this paragraph (d); (iv) A plan for how staff will be trained in awareness and application of the procedures required by this paragraph (d); (v) Timelines for implementing each program element, including the risk analysis and baseline risk assessments; and. (b) Whenever any pipe is removed from a pipeline for any reason, the internal surface must be inspected for evidence of corrosion. (d) Fatigue mitigation. [68 FR 69817, Dec. 15, 2003, as amended by Amdt. No. An integrity assessment conducted in accordance with the requirements of § 192.624(c) for establishing MAOP may be used as an initial assessment or reassessment under this section. 192-102, 71 FR 13301, Mar. The test pressure may include a combination of internal test pressure and the allowance for end loading stresses imposed by the pipe mill hydrostatic testing equipment as allowed by “ANSI/API Spec 5L” (incorporated by reference. Once the cabling is in place the ducting is then capped and sealed to prevent. Low-pressure distribution system means a distribution system in which the gas pressure in the main is substantially the same as the pressure provided to the customer. However, an operator must perform the duties of paragraph (c)(3) of this section through participation in a one-call system, if that one-call system is a qualified one-call system. (2) Pipe that has been produced and tested under a specification listed in appendix B to this part. Today, according to "In the Pipeline" in an article on enewsbuilder.net,[40] "As vacuum excavation technology and techniques for locating underground utilities has become both readily available and affordable, it's already considered by many municipalities as a Best Practice." Also included under the “utilities” umbrella are sewage and waste water services. [Amdt. Sucking down a hole being dug to work on gas mains, Deansgate, Manchester. (6) If the pressure in mains or service lines, or both, is to be higher than the pressure delivered to the customer, install a service regulator on each service line and test each regulator to determine that it is functioning. The operator must consider the results of the performance monitoring in these evaluations. (1) Operators are not required to test for the chemical and mechanical properties of components in compressor stations, meter stations, regulator stations, separators, river crossing headers, mainline valve assemblies, valve operator piping, or cross-connections with isolation valves from the mainline pipeline. Each compression type mechanical joint on plastic pipe must comply with the following: (1) The gasket material in the coupling must be compatible with the plastic. 192-86, 64 FR 46865, Aug. 27, 1999, as amended by Amdt. However, operators of Type A regulated onshore gathering lines in a Class 2 location may demonstrate compliance with subpart N by describing the processes it uses to determine the qualification of persons performing operations and maintenance tasks. (621 kPa) gage. (a) Applicability. If gas cannot be supplied in sufficient quantity to prevent the formation of a hazardous mixture of gas and air, a slug of inert gas must be released into the line before the gas. 192-27, 41 FR 34605, Aug. 16, 1976; Amdt. 192-125, 84 FR 52249, Oct. 1, 2019]. 192-118, 78 FR 58915, Sept. 25, 2013]. (2) Each UNGSF that uses a solution-mined salt cavern for natural gas storage and was constructed between July 18, 2017, and March 13, 2020, must meet all the provisions of API RP 1170 (incorporated by reference, see § 192.7) and paragraph (c) of this section prior to commencing operations, and must meet all the provisions of section 8 of API RP 1171 (incorporated by reference, see § 192.7) that are applicable to the physical characteristics and operations of a solution-mined salt cavern UNGSF, and paragraph (d) of this section, by March 13, 2021. If your supplier does agree to you carrying out any excavation work yourself, as said, specifications will be defined by them and the HSE, but in most cases, they will be similar to the following specs listed below. This is useful when excavating in expanding rock to prevent the machine from jamming. (b) Each wrinkle bend on steel pipe must comply with the following: (1) The bend must not have any sharp kinks. 192-102, 71 FR 13303, Mar. Perform a pressure test and verify material properties records in accordance with § 192.607 and the following requirements: (i) Pressure test. 192-125, 84 FR 52251, Oct. 1, 2019], (a) Each imperfection or damage that impairs the serviceability of pipe in a steel transmission line operating at or above 40 percent of SMYS must be -, (1) Removed by cutting out and replacing a cylindrical piece of pipe; or. This evaluation must consider, at minimum, the leak repair and inspection records, corrosion monitoring records, exposed pipe inspection records, and the pipeline environment. The ECA must analyze the predicted size of the largest defect that could have survived the pressure test that could remain in the pipe at the time the ECA is performed. ASTM A381 - Steel pipe, “Standard Specification for Metal-Arc-Welded Steel Pipe for Use with High-Pressure Transmission Systems” (incorporated by reference, see § 192.7). (a) Each buried or submerged pipeline must be electrically isolated from other underground metallic structures, unless the pipeline and the other structures are electrically interconnected and cathodically protected as a single unit. (b) No person may operate a segment to which paragraph (a)(4) of this section is applicable, unless over-pressure protective devices are installed on the segment in a manner that will prevent the maximum allowable operating pressure from being exceeded, in accordance with § 192.195. (b) No person may operate a low pressure distribution system at a pressure lower than the minimum pressure at which the safe and continuing operation of any connected and properly adjusted low-pressure gas burning equipment can be assured. You may experience low pressure and/or discoloration of water. S = Yield strength in pounds per square inch (kPa) determined in accordance with § 192.107. (d) Records. 192-95, 69 FR 18234, Apr. Lets face it, even if you take every precaution and follow every guideline to the letter, accidents do happen and as we have stated above, pipes and cables aren’t always where they are stated they should be. (4) Identify and implement measures to mitigate risks. (e) If air is used for purging, the operator shall insure that a combustible mixture is not present after purging. 191-1, 35 FR 17660, Nov. 17, 1970; Amdt. The notification must include descriptions of the following details: (i) The technology or technologies to be used for tests, examinations, and assessments; the method for establishing material properties; and analytical techniques with similar analysis from prior tool runs done to ensure the results are consistent with the required corresponding hydrostatic test pressure for the pipeline segment being evaluated; (ii) Procedures and processes to conduct tests, examinations, assessments and evaluations, analyze defects and flaws, and remediate defects discovered; (iii) Pipeline segment data, including original design, maintenance and operating history, anomaly or flaw characterization; (iv) Assessment techniques and acceptance criteria, including anomaly detection confidence level, probability of detection, and uncertainty of the predicted failure pressure quantified as a fraction of specified minimum yield strength; (v) If any pipeline segment contains cracking or may be susceptible to cracking or crack-like defects found through or identified by assessments, leaks, failures, manufacturing vintage histories, or any other available information about the pipeline, the operator must estimate the remaining life of the pipeline in accordance with paragraph § 192.712; (vii) Methodology and criteria used to justify and establish the MAOP; and. A competent person should: assess any excavation near or below the footing of any structure, including retaining walls. (2) Bare or coated pipes at compressor, regulator, and measuring stations. (3) If the endpoint of gathering, under section 2.2(a)(1)(C) of API RP 80, is determined by the commingling of gas from separate production fields, the fields may not be more than 50 miles from each other, unless the Administrator finds a longer separation distance is justified in a particular case (see 49 CFR § 190.9). (12) Implementing the applicable control room management procedures required by § 192.631. [Amdt. Advanced Construction Technology is a development of the relatively elementary construction detailed in the associated volume, Construction Technology. (adsbygoogle=window.adsbygoogle||[]).push({}); Additionally, most mains gas supply pipes, mains water supply pipes and mains electricity cables will have been run under or near public land e.g. (10) Systematic and routine testing and inspection of pipe-type or bottle-type holders including -. (2) Wherever necessary to identify the location of the transmission line or main to reduce the possibility of damage or interference. (e) Except for a welder or welding operator whose work is isolated from the principal welding activity, a sample of each welder or welding operator's work for each day must be nondestructively tested, when nondestructive testing is required under § 192.241(b). Additional construction requirements for steel pipe using alternative maximum allowable operating pressure. Electrical warning tape to be laid over newly installed cables to warn of their presence. (a) Except for buried piping at compressor, regulator, and measuring stations, each buried or submerged transmission line installed before August 1, 1971, that has an effective external coating must be cathodically protected along the entire area that is effectively coated, in accordance with this subpart. Control corrosion according to Subpart I requirements for transmission lines, Carry out a damage prevention program under, Establish a public education program under, Other provisions of this part as required by, Regulated onshore gathering line to which this part did not apply until April 14, 2006. 192-95, 69 FR 18231, Apr. (b) If amphoteric metals are included in a buried or submerged pipeline containing a metal of different anodic potential -, (1) The amphoteric metals must be electrically isolated from the remainder of the pipeline and cathodically protected; or. For pipe 2 inches (51 millimeters) or less in diameter, a length of pipe must be cold bent through at least 90 degrees around a cylindrical mandrel that has a diameter 12 times the diameter of the pipe, without developing cracks at any portion and without opening the longitudinal weld. (b) Maintenance and normal operations. According to New Mexico One Call 811: Aligning Change, Locating with Potholing, "One-call paint marks and flags are the first steps in making the process of locating underground utilities safer, the use of vacuum excavation technology adds an additional margin of safety."[39]. (b) An operator must also notify the appropriate State or local pipeline safety authority when an applicable pipeline segment is located in a State where OPS has an interstate agent agreement, or an intrastate applicable pipeline segment is regulated by that State. Transmission lines: Permanent field repair of leaks. One of the more challenging road crossings was the Hay St and Milligan St intersection. (414 kPa) gage or more, the pressure may not exceed the maximum allowable operating pressure plus 10 percent, or the pressure that produces a hoop stress of 75 percent of SMYS, whichever is lower; (ii) If the maximum allowable operating pressure is 12 p.s.i. An operator using direct assessment as an assessment method to address internal corrosion in a covered pipeline segment must follow the requirements in this section and in ASME/ANSI B31.8S (incorporated by reference, see § 192.7), section 6.4 and appendix B2. Gas Distribution Pipeline Integrity Management (IM). The nominal wall thickness to be used in the design formula in § 192.105 is the next wall thickness found in commercial specifications that is below the average of all the measurements taken. (3) Perform semi-annual leak surveys (quarterly for unprotected pipelines or cathodically protected pipe where electrical surveys are impractical). If it is to be welded, steel pipe that has not been manufactured to a listed specification must also pass the weldability tests prescribed in paragraph II-B of appendix B to this part. 192-60A, 54 FR 5485, Feb. 3, 1989; Amdt. 7, 1980; Amdt. (3) transports gas within a storage field. (b) External corrosion plan. (b) Exceptions. Spoils tanks range in size from 150 gallons up to 2000 gallon tanks. 192-119, 80 FR 181, Jan. 5, 2015; Amdt. Operators must document the method used to determine the pressure rating and the findings of that determination. [Amdt. In these cases one SWMS may be prepared to cover all high risk construction work activities being carried out at the workplace. Each operating floor of a main compressor building must have at least two separated and unobstructed exits located so as to provide a convenient possibility of escape and an unobstructed passage to a place of safety. 192-76, 61 FR 26122, May 24, 1996; Amdt. (f) Except for offshore pipelines, each underground pipeline that is being connected to new branches must have a firm foundation for both the header and the branch to prevent detrimental lateral and vertical movement. (b) Prioritizing segments. (ii) Using the intervals specified for different stress levels of pipeline (operating at or above 30% SMYS) listed in ASME B31.8S (incorporated by reference, see § 192.7), section 5, Table 3. 192-114, 75 FR 48604, Aug. 11, 2010]. Vacuum-excavation hire provider Pier (UK) work with utility and civil engineering companies throughout the UK to provide safer no-dig excavation. May means “is permitted to” or “is authorized to”. To search for information within Part 192, use your browser's built-in "find on page" functionality. 192-120, 80 FR 12779, Mar. This information, includes, but is not limited to, location of all gas input and withdrawal points on the line; location of all low points on covered segments such as sags, drips, inclines, valves, manifolds, dead-legs, and traps; the elevation profile of the pipeline in sufficient detail that angles of inclination can be calculated for all pipe segments; and the diameter of the pipeline, and the range of expected gas velocities in the pipeline; (iii) Operating experience data that would indicate historic upsets in gas conditions, locations where these upsets have occurred, and potential damage resulting from these upset conditions; and. The man on the near right is using a pneumatic drill. (b) For pipe that is manufactured in accordance with a specification not listed in section I of appendix B to this part or whose specification or tensile properties are unknown, the yield strength to be used in the design formula in § 192.105 is one of the following: (1) If the pipe is tensile tested in accordance with section II-D of appendix B to this part, the lower of the following: (i) 80 percent of the average yield strength determined by the tensile tests.
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