Chapter 15.75
GENERAL SPECIFICATIONS FOR GAS SERVICE
Sections:
15.75.040 Utility specification.
15.75.070 Excavation and backfilling.
15.75.090 Workmanship and defects.
15.75.100 Protective covering.
15.75.120 Installing pipe underground.
15.75.150 Qualification checklist for contractors installing gas lines.
15.75.010 General.
This chapter defines the general requirements for gas service to be designed and built by the developer, subdivider, owner, or contractor for all types of construction (to include residential, commercial, industrial, and professional office). Contractors installing gas lines must posses a valid Utah E100 or S410 license.
A. All pipeline installation shall be in accordance with 49 CFR Part 192 and ASME B31.8. Any discrepancy in the two shall favor the wording of 49 CFR Part 192. All installation must be coordinated with the Utah State Division of Public Utilities Pipeline Safety.
B. Welding Steel Piping. Piping shall be welded in accordance with qualified procedures using performance-qualified welders and welding operators. Procedures and welders shall be qualified in accordance with ASME 17. Welding procedures qualified by others, and welders and welding operators qualified by another employer, may be accepted as permitted by ASME B31.1. The engineer shall be notified at least 24 hours in advance of tests and the tests shall be performed at the work site if practicable. The engineer shall be furnished with a copy of qualified procedures and a list of names and identification symbols of qualified welders and welding operators. The welder or welding operator shall apply his assigned symbol near each weld he makes as a permanent record.
C. Jointing Polyethylene Piping. Piping shall be joined by performance-qualified joiners using qualified procedures in accordance with AGA-01. Manufacturer’s prequalified joining procedures shall be used. All joints shall be inspected by a qualified inspector in the joining procedures being used in accordance with AGA-01. Joiners and inspectors shall be qualified at the job site by a person who has been trained and certified by the manufacturer of the pipe to train and qualify joiners and inspectors in each joining procedure to be used on the job. Training will include use of equipment, explanation of the procedure and successfully making joints which pass tests specified in AGA-01. The contractor shall submit a copy of the training procedure and qualification of the trainer for approval of the engineer. The engineer shall be notified at least 24 hours in advance of the date to qualify joiners and inspectors. The contractor shall provide the engineer a copy report of each inspector’s and joiner’s training and test results.
D. Standard Products. Materials and equipment shall be the standard products of a manufacturer regularly engaged in the manufacture of the products and shall essentially duplicate items that have been in satisfactory use for at least two years prior to bid opening. Asbestos or products containing asbestos shall not be used. Equipment shall be supported by a service organization that is, in the opinion of the engineer, reasonably convenient to the site. Valves, flanges, and fittings shall be marked in accordance with MSS SP-25.
E. Verification of Dimensions. The contractor shall become familiar with all details of the work, verify all dimensions in the field, and shall advise the engineer of any discrepancy before performing the work.
F. Handling. When shipping, delivering, and installing, pipe and components shall be handled carefully to ensure a sound, undamaged condition. Particular care shall be taken not to damage pipe coating. No pipe or material of any kind shall be placed inside another pipe or fitting after the coating has been applied, except as specified in EMMC 15.75.110, Installation. Plastic pipe shall be handled in conformance with AGA-01.
G. The publications listed below form a part of this chapter to the extent referenced. The publications are referred to in the text by basic designation only.
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AMERICAN GAS ASSOCIATION (AGA) |
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AGA |
(1985) A.G.A. Plastic Pipe Manual for Gas Services |
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AMERICAN NATIONAL STANDARDS INSTITUTE, INC. (ANSI) |
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ANSI B1.20.1 |
(1983) Pipe Threads, General Purpose (Inch) |
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ANSI B16.11 |
(1980) Forged Steel Fittings, Socket-Welding and Threaded |
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ANSI B16.21 |
(1978) Nonmetallic Flat Gaskets for Pipe Flanges |
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AMERICAN PETROLEUM INSTITUTE (API) |
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API Spec 5L |
(May 31, 1998; 37th Edition) Line Pipe |
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API Spec |
(June 1998, 19th Edition) Pipeline Valves (Steel Gate Plug, Ball, and Check Valves) |
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AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) |
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ASTM A53 |
(1988a) Pipe, Steel, Black and Hot-Dipped, Zinc-Coated Welded and Seamless |
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ASTM A181 |
(1987) Forgings, Carbon Steel for General-Purpose Piping |
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ASTM D2513 |
(1988b) Thermoplastic Gas Pressure Pipe, Tubing, and Fittings |
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ASTM D2517 |
(1981; R 1987) Reinforced Epoxy Resin Gas Pressure Pipe and Fittings |
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ASTM D2683 |
(1988) Socket-Type Polyethylene Fittings for Outside Diameter-Controlled Polyethylene Pipe and Tubing |
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ASTM D3261 |
(1988a) Butt Heat Fusion Polyethylene (PE) Plastic Fittings for Polyethylene (PE) Plastic Pipe and Tubing |
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ASTM D3350 |
(1984) Polyethylene Plastic Pipe and Fittings Materials |
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AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) |
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ASME 16 |
(1986; Addenda: Dec. 1986, Dec. 1987, Dec. 1988) Boiler and Pressure Vessel Code; Section VIII, Division 1, Pressure Vessels |
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ASME 17 |
(1986; Addenda: Dec. 1986, Dec. 1987, Dec. 1988) Boiler and Pressure Vessel Code; Section IX, Welding and Brazing Qualifications |
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ASME B16.5 |
(1988; Errata) Pipe Flanges and Flanged Fittings |
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ASME B16.9 |
(1986) Factory-Made Wrought Steel Buttwelding Fittings |
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ASME B16.40 |
(1985) Manually Operated Thermoplastic Gas Shutoffs and Valves in Gas Distribution Systems |
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ASME B31.1 |
(1989) Power Piping |
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ASME B31.8 |
(1989) Gas Transmission and Distribution Piping Systems |
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AMERICAN WATER WORKS ASSOCIATION (AWWA) |
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AWWA C203 |
(1986) Coal-Tar Protective Coatings and Linings for Steel Water Pipelines – Enamel and Tape – Hot-Applied |
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FEDERAL SPECIFICATIONS (FS) |
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FS L-C-530 |
(Rev C) Coating, Pipe, Thermoplastic Resin |
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MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTING INDUSTRY, INC. (MSS) |
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MSS SP-25 |
(1978; R 1988) Standard Marking System for Valves, Fittings, Flanges and Unions |
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MSS SP-84 |
(1985) Steel Valves – Socket Welding and Threaded Ends |
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MILITARY SPECIFICATIONS (MS) |
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MS MIL-T-27730 |
(Rev A) Tape, Antiseize, Polytetrafluoroethylene, with Dispenser |
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NATIONAL ASSOCIATION OF CORROSION ENGINEERS (NACE) |
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NACE RP-02 |
(1974) High Voltage Electrical Inspection of Pipeline Coatings Prior to Installation |
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STEEL STRUCTURES PAINTING COUNCIL (SSPC) |
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SSPC SP-6 |
(1985) Commercial Blast Cleaning |
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UNDERWRITERS LABORATORIES, INC. (UL) |
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UL-06 |
(1989; Supplement 1989) Gas and Oil Equipment Directory |
[Ord. O-03-2010 § 1 (Exh. A § 15.010)].
15.75.020 Service conditions.
A. The utility shall approve of the location of all infrastructure placed within Eagle Mountain City. Typical cross-sections are provided to show the typical location of the proposed lines.
B. Approvals Required. All distribution work must be accepted by Eagle Mountain City prior to any connections.
C. Extension Requirements. Where the furnishing of service requires an extension of the utility’s distribution or transmission lines, or other facilities, they shall be installed at the owner or developer’s expense.
D. Nominal Service. Service shall nominally be two-inch 40 psi polyethylene pipe.
E. Utility Maintenance Responsibility. The utility shall own, operate, and maintain its service laterals and lines from the meter to and including the infrastructure in the utility’s right-of-way or easements.
F. Meter. The meter will be supplied by the utility and paid for by the hookup fee.
G. Cleanup. All garbage and scrap pipe must be cleaned up prior to contractor leaving job site. Also, no garbage is to be buried in trenches.
H. Damages. If pipeline is damaged by contractor and they are qualified to do the repair, they may do so upon approval of the gas supervisor. If contractor is not qualified, Eagle Mountain City will do the repair and contractor will be billed accordingly. Any scratch or ding more than 10 percent of the wall thickness must be cut out and replaced. If pipe is touched by any piece of machinery the piece of pipe must then be replaced.
I. Blue Stakes. Any excavation being done requires the proper license and a valid Blue Stake ticket. Violation of this rule results in a stop work order and/or fines. [Ord. O-03-2010 § 1 (Exh. A § 15.020)].
15.75.030 Type of service.
A. Pressure. The maximum pressure provided by the infrastructure shall not exceed 40 psi.
B. Unusual Conditions. Where an unusual extension or demand is placed upon the system, the city reserves the right to require special conditions.
C. Pressure Regulator. The developer or owner shall be responsible to maintain or protect the home from potential pressure spikes. [Ord. O-03-2010 § 1 (Exh. A § 15.030)].
15.75.040 Utility specification.
A. Steel Pipe.
1. Steel pipe shall conform to ASTM A53, Grade A or B, Type E or S, or API Specification 5L seamless or electric resistance welded, as specified in ASME B31.8.
2. Fittings two inches and larger shall conform to ASME B16.5, Class 150, for flanged fittings and ASME B16.9 for buttweld fittings.
B. Steel Forged Branch Connections. Connections shall conform to ASTM A181, Class 60, carbon steel.
C. Flange Gaskets. Gaskets shall be non-asbestos compressed material in accordance with ANSI B16.21, one-sixteenth-inch thickness, full face or self-centering flat ring type. The gaskets shall contain aramid fibers bonded with styrene butadiene rubber (SBR) or nitrile butadiene rubber (NBR), suitable for maximum 600 degrees Fahrenheit service and meeting applicable requirements of ASME B31.8.
D. Pipe Threads. Pipe threads shall conform to ANSI B1.20.1.
E. Polyethylene Pipe, Tubing, Fittings and Joints. Polyethylene pipe, tubing, fittings and joints shall conform to ASTM D3350 and ASTM D2513, pipe designations PE 2306 and PE 3406, rated SDR 11 or less, as specified in ASME B31.8. Pipe sections shall be marked as required by ASTM D2513. Butt fittings shall conform to ASTM D3261 and socket fittings shall conform to ASTM D2683. Fittings shall match the service rating of the pipe.
F. Sealants for Steel Pipe Threaded Joints.
1. Sealing Compound. Joint sealing compound shall be as listed in UL-60, Class 20 or less.
2. Tape. Tetrafluoroethylene tape shall conform to MS MIL-T-27730.
G. Identification. Pipe flowing markings and metal tags for each valve, meter, and regulator shall be provided as required by the engineer.
H. Insulating Joint Materials. Insulating joint materials shall be provided between flanged or threaded metallic pipe systems where shown to control galvanic or electrolytic action.
1. Threaded Joints. Joints for threaded pipe shall be steel body nut type dielectric type unions with insulating gaskets.
I. Flanged Joints. Joints for flanged pipe shall consist of full face sandwich-type flange insulating gasket of the dielectric type, insulating sleeves for flange bolts and insulating washers for flange nuts.
J. Gas Transition Fittings. Gas transition fittings shall be manufactured steel fittings approved for jointing steel and polyethylene pipe.
K. Piping.
1. All low pressure piping shall be polyethylene pipe SDR PE 2406 per ASTM D2513. Minimum depth shall be 36 inches.
2. All high pressure piping shall be steel pipe Grade B or X-42. Minimum depth shall be 42 inches.
3. Service lines shall be polyethylene pipe. Minimum depth shall be 24 inches.
L. Valves shall be suitable for shutoff or isolation service and shall conform to the following: Steel valves two inches and larger installed underground shall conform to API Specification 6D, carbon steel, buttweld, Class 150 with square wrench operator adapter.
M. Steel Valve Operators. Valves eight inches and larger shall be provided with worm or spur gear operators, totally enclosed, greased, packed, and sealed. The operator shall have open and closed stops and position indicators. Locking feature shall be provided where indicated. Wherever the lubricant connections are not conveniently accessible, suitable extensions for the application of lubricant shall be provided. Valves shall be provided with lubricant compatible with gas service.
N. Polyethylene Valves – One-Half Inch to Eight Inches. Polyethylene valves for underground installation only shall conform to ASME B16.40. Polyethylene valves in sizes one-half inch to eight inches may be used with polyethylene distribution and service lines as a contractor option to steel valves.
O. Dead End Markers. At the end of all gas lines a dead end marker needs to be placed. No scrap pipe can be used for dead end markers. The locate wire needs to be run up the dead end marker above grade for a locate point. Also on mains in undeveloped areas a marker sign and locate wire need to be brought up every 500 inches for locating purposes. Signs will be placed by Eagle Mountain City. [Ord. O-03-2010 § 1 (Exh. A § 15.040)].
15.75.050 Right-of-way.
A. Construction within Right-of-Way. To the extent feasible, utility’s distribution and transmission lines and appurtenances will be constructed within the right-of-way or public utility easements of streets, roads, or alleys. Whenever, in the opinion of the utility, it is not practical to construct and install its facilities within the limits of the streets, roads, alleys, or other public thoroughfares, the utility will construct and install such facilities on private rights-of-way.
B. Furnishing Right-of-Way. Whenever it is necessary for utilities to occupy private rights-of-way, the property owner shall furnish or assist in acquiring, without charge to the utility, such right-of-way as necessary and will assist the utility in securing such other right-of-way as may be necessary to provide service to the developer. [Ord. O-03-2010 § 1 (Exh. A § 15.050)].
15.75.060 Access to premises.
A. Utility Access to Premises. Any properly identified representative of the utility shall, at all reasonable hours, have free access to and from the premises of the consumer for the purpose of inspecting consumer’s installations and gas equipment and for reading, repairing, testing, or removing the utility’s meter or its property. When, in the opinion of the utility, emergency conditions exist with respect to the utility’s service, utility representatives shall have immediate and free access to consumer’s premises. [Ord. O-03-2010 § 1 (Exh. A § 15.060)].
15.75.070 Excavation and backfilling.
A. Earthwork shall be as specified in Chapter 15.30 EMMC, Excavation and Backfill for Trenches.
B. Excavation around High Pressure. Any excavation around high pressure must be supervised by Blue Stake personnel and/or the gas department at all times. Any high pressure line exposed needs to be inspected for damage before backfill. [Ord. O-03-2010 § 1 (Exh. A § 15.070)].
15.75.080 Gas mains.
Pipe for gas mains shall be steel or polyethylene as shown on the plans. Steel pipe and fittings shall be coated with protective covering as specified. [Ord. O-03-2010 § 1 (Exh. A § 15.080)].
15.75.090 Workmanship and defects.
Pipe, tubing, and fittings shall be clear and free of cutting burrs and defects in structure or threading and shall be thoroughly brushed and chip- and scale-blown. Defects in pipe or tubing or fittings shall not be repaired. When defective pipe, tubing, or fittings are located in a system, the defective material shall be replaced. [Ord. O-03-2010 § 1 (Exh. A § 15.090)].
15.75.100 Protective covering.
A. Protective Covering for Underground Steel Pipe. Except as otherwise specified, protective coverings shall be applied mechanically in a factory or field plant specially equipped for the purpose. Valves and fittings that cannot be coated and wrapped mechanically shall have the protective covering applied by hand, preferably at the plant that applies the covering to the pipe. Joints shall be coated and wrapped by hand. Hand coating and wrapping shall be done in a manner and with materials that will produce a covering equal in thickness to that of the covering applied mechanically. Piping installed in valve boxes or manholes shall also receive the specified protective coating. The coatings shall consist of one of the following:
1. Coating System. The coating system shall be inspected for holes, voids, cracks, and other damage during installation.
2. Inspection of Pipe Coatings. Any damage to the protective covering during transit and handling shall be repaired before installation. After field coating and wrapping has been applied, the entire pipe shall be inspected by an electric holiday detector with impressed current in accordance with NACE RP-02 using a full ring, spring-type coil electrode. The holiday detector shall be equipped with a bell, buzzer, or other type of audible signal which sounds when a holiday is detected. All holidays in the protective covering shall be repaired immediately upon detection. Occasional checks of holiday detector potential will be made by the engineer to determine suitability of the detector. All labor, materials and equipment necessary for conducting the inspection shall be furnished by the contractor.
3. Ferrous Surfaces. Shop primed surfaces shall be touched up with ferrous metal primer. Surfaces that have not been shop primed shall be solvent-cleaned. Surfaces that contain loose rust, loose mill scale, and other foreign substances shall be mechanically cleaned by power wire brushing (or commercial sandblasted) and primed with ferrous metal primer. Primed surface shall be finished with two coats of exterior oil paint. [Ord. O-03-2010 § 1 (Exh. A § 15.100)].
15.75.110 Installation.
A. The distribution system shall be installed at the expense of the contractor including all testing and inspection costs.
1. All work shall be performed in accordance with the Department of Transportation (DOT) 49 CFR Parts 191 and 192.
2. Drawings. As-builts are required upon completion before work will be accepted. Mains will be installed as per approved plans unless otherwise specified by the city inspector. Eagle Mountain City will require an electronic copy and a hard copy of all as-builts.
3. Installation of Pipe. Fusers must complete Eagle Mountain’s written and fusion test before any fusing can be done. Pipe needs to have slack left in pipe for expanding and contracting of pipe. No bolt-on, mechanical or permasert couplings or fittings will be accepted. However, socket, butt, saddle, and electrofusion are all approved. All riser brackets need to have at least three wedge anchors; no Hilti nails. Service lines on single-family dwellings cannot be split off of one line. All gas lines need to have a 14-gauge locate wire installed with pipe. Any pipe installed must be scratch-free and in good condition. All risers must be left locked and plugged until meter is set. Anyone welding or working on high pressure must provide proof of Division of Pipeline Safety certification before any work can be done on pipeline.
B. Bedding. If conduit is not used, all pipe shall be bedded with at least three inches of sand and bed with six inches of shading.
C. Minimum Distance. Minimum distance for placement of structures and facilities near main transmission lines:
1. As used in this subsection C:
a. “Main” has the meaning set forth in 49 CFR 192.3.
b. “Minimum distance” means:
i. The width of a recorded easement when the width is described;
ii. Fifteen feet when the width of a recorded easement is undefined; or
iii. For any underground facility, it means an area measured one foot vertically and three horizontally from the outer surface of a main or transmission line.
c. “Transmission line” has the meaning set forth in 49 CFR 193.3.
d. “Underground facilities” has the meaning set forth in Section 54-8a-2, Utah Code Annotated 1953.
2. a. After April 30, 1995, a building or structure requiring slab support or footings, or an underground facility, may not be placed within the minimum distance of a main or transmission line.
b. Subsection (C)(2)(a) of this section does not apply if:
i. The building or structure is used for public or railroad transportation, natural gas pipeline purposes, or by a public utility subject to the jurisdiction or regulation of the Public Services Commission.
ii. In order to receive natural gas service, the building or structure must be located within the minimum distance of the pipeline.
iii. The owner or operator of the main transmission line has been notified prior to construction or placement pursuant to Section 54-8a-4, Utah Code Annotated 1953, and has given written permission.
iv. The commission by rule exempts such action from the provisions of subsection (C)(2)(a) of this section.
v. An owner or operator of a main transmission line may obtain a mandatory injunction from the district court of the judicial district in which the main transmission line is located against any person who violates subsection (C)(2) of this section.
vi. The penalties specified in Title 54, Chapter 7, Utah Code Annotated 1953, Hearing, Practice, and Procedure, and in Section 54-13-6, Utah Code Annotated 1953, do not apply to a violation of this section.
D. Marking Tape. All polyethylene lines shall be installed with locator wire and warning tape.
E. Trenches shall be backfilled in accordance with Chapter 15.30 EMMC. All mains must have a minimum of 30 inches of cover, services also must have 30 inches of minimum cover to the back of the easement, then 24 inches is required. High pressure lines must have a minimum of 48 inches of cover. All trenches must be compacted to 95 percent in the roadway and 90 percent out of the roadway. Compaction tests are required on mains. All trenches must be cleaned up to original condition. Contractor is responsible for any damages on the site during excavation. All gas services and mains must be shaded with washed cyclone sand or equivalent as per inspector. Sand must be three inches under pipe and 12 inches of cover over pipe. Gas riser needs to be buried up to red line on riser with sand. Once pipe is placed in trench it must be shaded the same day. If pipe needs to be left open for a tie-in you are allowed 10 days.
F. Fusion. All polyethylene line shall be joined with a heat fusion process and personnel approved by Eagle Mountain City.
G. Testing. All pipe shall be tested at 100 psi with a median of air or nitrogen, for at least 15 minutes for every 100 feet. For example, 98 feet requires a 15-minute test; 101 feet requires a 30-minute test, and so on. The minimum test is 15 minutes regardless of length. Any fittings that can’t be tested by air must be soap tested.
H. Installation of the gas distribution system, including all equipment, shall be in conformance with the manufacturer’s recommendations and applicable sections of ASME B31.8, 49 CFR Part 192, and with AGA-01. Pipe cutting shall be done without damage to the pipe. Unless otherwise authorized, cutting shall be done by an approved type of mechanical cutter. Wheel cutters shall be used where practicable. On steel pipe six inches and larger, an approved gas-cutting-and-beveling machine may be used. Cutting of plastic pipe shall be in accordance with AGA-01.
I. Valve installation in plastic pipe shall be designed to protect the plastic pipe against excessive torsional or shearing loads when the valve is operated and from any other stresses which may be exerted through the valve or valve box. [Ord. O-03-2010 § 1 (Exh. A § 15.110)].
15.75.120 Installing pipe underground.
A. Gas mains and service lines shall be graded as indicated. Joints in steel pipe shall be welded, except as otherwise permitted for installation of valves. Mains shall have 48-inch minimum cover and shall be placed on firmly compacted select material for the full length. Where roads are to be cut, 48-inch minimum cover from future grade shall be maintained. Where indicated, the main shall be encased, bridged, or designed to withstand any anticipated external loads as specified in ASME B31.8. The encasement material shall be standard weight black steel pipe with a protective coating as specified. The pipe shall be separated from the casing by insulating spacers and sealed at the ends with casing bushings. Trench shall be excavated below pipe on blocks to produce uniform grade will not be permitted. The pipe shall be clean inside before it is lowered into the trench and shall be kept free of water, soil, and other foreign matter that might damage or obstruct the operation of the valves, regulators, meters, or other equipment. When work is not in progress, open ends of pipe or fittings shall be securely closed by expandable plugs or other suitable means. Minor changes in line or gradient of pipe that can be accomplished through the natural flexibility of the pipe material without producing permanent deformation and without overstressing joints may be made when approved. Changes in line or gradient that exceed the limitations specified shall be made with fittings specified. When polyethylene piping is installed underground, foil-backed magnetic tape shall be placed above the pipe to permit locating with a magnetic detector. After laying of pipe and testing, trench shall be backfilled to 12 inches over pipe with compacted bank sand within 12 hours of inspection and then tested. All exposed ends are to be capped immediately during installation. Remaining backfill is to be select soil compacted in eight-inch layers to finish grade.
B. In rocky areas the gas pipe must maintain a minimum cover of 24 inches, in accordance with 49 CFR 192.327. The contractor shall be required to excavate the trench if there is rock present. The engineer must approve all areas that will have the 24-inch cover.
C. Excavation under pond areas shall be performed as indicated on drawing details. [Ord. O-03-2012 § 1 (Exh. A § 15.120); Ord. O-03-2010 § 1 (Exh. A § 15.120)].
15.75.130 Pipe joints.
A. Pipe joints shall be designed and installed to effectively sustain the longitudinal pullout forces caused by the contraction of piping or superimposed loads.
B. Threaded Steel Joints. Threaded joints in steel pipe shall have tapered threads evenly cut and shall be made with UL-approved graphite joint sealing compound for gas service or tetrafluoroethylene tape applied to the male threads only. Caulking of threaded joints to stop or prevent leaks will not be permitted.
C. Welded Steel Joints. All gas pipe weldments shall be as indicated. Changes in direction of piping shall be made with welding fittings only; mitering or notching pipe to form elbows and tees or other similar type construction will not be permitted. Branch connection may be made with either welding tees or forged branch outlet fittings. Branch outlet fittings shall be forged, flared for improvement of flow where attached to the run, and reinforced against external strains. Beveling, alignment, heat treatment, and inspection of weld shall conform to ASME B31.8. Weld defects shall be removed and repairs made to the weld, or the weld joints shall be entirely removed and rewelded. After filler metal has been removed from its original package, it shall be protected or stored so that its characteristics or welding properties are not affected adversely. Electrodes that have been wetted or have lost any of their coating shall not be used.
D. Polyethylene Pipe Jointing Procedures. Jointing procedures shall conform to AGA-01. Indiscriminate heat fusion joining of plastic pipe or fitting made from different polyethylene resins by classification or by manufacturer shall be avoided if other alternative joining procedures are available. If heat fusion joining of dissimilar polyethylenes is required, special procedures are required. The method of heat fusion joining dissimilar polyethylene resins shall be shop- and field-tested prior to adoption.
E. Connections between Metallic and Plastic Piping. Connections shall be made only outside, underground and with the approved transition fittings. [Ord. O-03-2010 § 1 (Exh. A § 15.130)].
15.75.140 Valve boxes.
A. Valve boxes of cast iron not less than three-sixteenths-inch thick shall be installed at each underground valve, except where concrete or other type of housing is indicated. Valve boxes shall be provided with locking covers that require a special wrench for removal. A wrench shall be furnished for each box. The word “gas” shall be cast in the box cover. The valve box shall be protected against movement by a suitable concrete slab at least two feet square. When in a sidewalk, the top of the box shall be in a concrete slab two feet square and set flush with the sidewalk. Boxes shall be adjustable extension-type with screw or slide-type adjustments. Valve boxes shall be separately supported, not resting on the pipe, so that no traffic loads can be transmitted to the pipe.
B. Construction within Right-of-Way. To the extent feasible, utility’s distribution and transmission lines and appurtenances will be constructed within the right-of-way or public utility easements of streets, roads, or alleys. Whenever, in the opinion of the utility, it is not practical to construct and install its facilities within the limits of the streets, roads, alleys, or other public thoroughfares, the utility will construct and install such facilities on private rights-of-way.
C. Furnishing Right-of-Way. Whenever it is necessary for utilities to occupy private rights-of-way, the property owner shall furnish or assist in acquiring, without charge to the utility, such right-of-way as necessary and will assist the utility in securing such other right-of-way as may be necessary to provide service to the developer. [Ord. O-03-2010 § 1 (Exh. A § 15.140)].
15.75.150 Qualification checklist for contractors installing gas lines.
A. Contractors shall possess current Utah E100 and/or S410 licenses.
B. All persons fusing on gas pipe must hold a current Eagle Mountain City certification.
C. Any contractor working for Eagle Mountain City must provide a copy of their operation’s qualification plan before performing any work.
D. Any new contractor shall have sufficient proof of prior experience and also obtain an Eagle Mountain City certification.
E. All contractors shall provide as-builts of gas mains and service lines upon completion of the project in a timely manner.
F. All contractors must follow the regulations found in the DOT 49 CFR manual.
G. All installations shall conform to Eagle Mountain City’s latest construction development standards.
H. If a contractor is found in violation of the items in the checklist in this section, a stop work order will be issued until the matter is resolved.
I. Any contractor working in Eagle Mountain City must have a valid Blue Stakes ticket.
J. To schedule certification times, contact the gas superintendent at 789-6674.
K. All certifications must be renewed annually. [Ord. O-03-2010 § 1 (Exh. A)].