- 7. Mai 2023
- Posted by:
- Category: Allgemein
During pull-in of the pipe a load link should be inserted between the swivel and the pipe to show and record the axial load applied. Recycled water pipeline completed in Encinitas, Calif. The drilling fluid is sent into a machine called a reclaimer which removes the drill cuttings and maintains the proper viscosity of the fluid. W9 ]9-j?aV088I Section includes requirements for Horizontal Directional Drilling (HDD) of High Density Polyethylene (HDPE) Pressure Sewer pipe. This information is encoded into an electromagnetic signal and transmitted through the ground to the surface in a walk-over system. 29), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council North American Society for Trenchless Technology (NASTT), (2008). We are not only a product manufacturer, also a solution provider, whether you have a Question or Request For Quotations, we're here to help. hbbd``b`$mA,k D\ Image Courtesy: Exova Utilities, Large "maxi" drilling rig. Horizontal directional drilling (HDD) is a safe method of installing an underground pipeline. Advancement of tooling within loose uncemented soils is largely accomplished by hydraulic excavation. One of the significant contributions of ASTM International F1962 is the provision of a rational, analytical method for selecting the polyethylene pipe strength based upon the estimated installation and post-installation (operational) loads on the polyethylene pipe. For flexible PE pipe, with minimal bending stiffness, the considered bearing forces are those due to the: In addition, the drilling fluid/slurry flowing along the length of the pipe also contributes, but is relatively low, based on the present model. The stiffness of the steel drill rods determines their allowable curvature, in order to avoid fatigue. Problematic soil conditions include large grain content in the form of coarse gravel, cobbles, and boulders. In particular, Table X1.1 provides the modulus of elasticity and safe pull tensile stress for HDPE (PE4710) and MDPE (PE2406) materials, as a function of load duration. As the hole is bored, a steel drill string is extended behind a cutting head. At 180mm the maximum length on a coil is generally 100 metres, and smaller diameters can be longer. Output can be emailed directly from the Calculator, or An additional length L1 exterior to the drilled path allows for handling at both ends and possible other effects (path curvature, thermal contraction, stretching, etc.). Horizontal Directional Drilling (HDD) Horizontal Directional Drilling (HDD) is often used to install HDPE pipe in situations where an obstacle, either above ground or below the surface, does not allow traditional installation methods to be used. CANTEX's CAN>LOC and CAN>GRIP systems offer many benefits over HDPE, which is the conduit most used for HDD applications. Pipe entry point is at the opposite end of the drill rig location, which coincides with the pipe exit.. Pipeline design for installation by horizontal directional drilling -, Skonberg, Eric R., and Tennyson M. Muindi. Other subsurface conditions which can impact the feasibility of directional boring include excessive rock strength and abrasivity, poor rock quality, and rock exhibiting karst features. Thus, ASTM F1962 provides a means of determining project feasibility, as well as initial design information. Directional boring offers significant environmental advantages over traditional cut and cover pipeline/utility installations. It was reissued in 2005 and 2011, and previously reinstated in 2020. [1], Although often used interchangeably, the terms directional boring and horizontal directional drilling are distinct in that they convey a different sense of scale. 349 0 obj <> endobj [2], Directional boring/HDD is generally accomplished in three principal phases. 0000002438 00000 n This material is significantly tougher than older, previously used PE products, facilitating successful completion of more complicated, difficult maxi-HDD projects. It is important that, if the pipe to which the new pipe is being connected has spigot and socket joints, which will have little end load resistance, means must be provided to absorb the axial tension. Pipe entry point is at the opposite end of the drill rig location, which coincides with the pipe exit., shows the drilling operation proceeding from right to left, in contrast to. Safety is a primary concern, during any activity, including construction utilizing maxi-HDD equipment and procedures. Thus, guidelines for the use of midi-HDD machines and associated practices, including pipe selection methodology, may be obtained from the TR-46 document and/or ASTM F 1962, depending upon the judgment of the contractor or engineer. COPYING AND DISTRIBUTING ARE PROHIBITED WITHOUT PERMISSION OF THE PUBLISHER. Successive reamers of increasing diameter are used until the bore is of sufficient size to accept the PE100 pipe. It is used instead of other techniques to provide less traffic disruption, lower cost, deeper and/or longer installation, no access pit, shorter completion times, directional capabilities, and environmental safety. Additional route bends, beyond those shown in FIGURE 2, as well as possible bends in the horizontal plane, should be avoided, and will increase the required pulling forces. This arc follows a preset bore path using a surface drilling rig. [5], Tooling, as in the mechanical apparatus that are installed to the drill string to conduct operations, are available in a wide number of different shapes and sizes. Now Available: ASTM Guide for Use of Maxi-HDD Placing HDPE Pipe Under Obstacles. Horizontal directional drilling (HDD) consists of several installation steps. 0000004070 00000 n The construction area is relatively small and the construction period is relatively short. The tensile load on the pipe during installation must be calculated to establish whether it exceeds the maximum allowable load. These plastic pipes offer a new generation of leak-proof, maintenance-free, and energy-efficient pipeline systems that are chemical- and abrasion-resistant and therefore excellent for use in the lining and relining of pipelines, slurry applications, water reticulation, sewer and stormwater systems, the mining industry, and in dolomite areas. Often used in trenchless applications where digging is difficult or impossible, high density polyethylene (HDPE) pipes have many characteristics that make them the choice product. greater than 1.0 indicates that the displayed wall type will have To improve your experience, other cookies may be used: you can choose to disable them. [citation needed], The technique has extensive use in urban areas for developing subsurface utilities as it helps in avoiding extensive open cut trenches. Rizkalla, Moness. It can be used on land, sea, urban areas and rivers. One of the reasons why HDD is so effective is because directional boring contractors utilize polyethylene pipe. ;0CKh6sKjrmlq9vwiJ%)m5]UWd Which Method to Use When Estimating Maxi-HDD Installation Loads- ASTM F1962 or the PRCI Method. 0000029587 00000 n 0000015903 00000 n ASCE Pipelines 2014. Actual ID will vary. It offers unmatched corrosion and chemical resistance, is flexible, durable and available in long reel lengths to reduce joints and installation time. When drilling through harder ground formations and in rock a mud motor is used to drive the drilling bit independently of drill rod rotation. 0000018014 00000 n Image Courtesy:Exova Utilities. 1.2 QUALITY ASSURANCE A. The use of HDPE pipes in trenchless technology is rapidly becoming a repair building and civil engineering The preferred method of domain pipeline. Typical Entry Site Layout. This arc follows a preset bore path using a surface drilling rig. Bearing forces resulting from (previously induced) tension tending to pull the pipe snugly against any curved surfaces (capstan effect). The intermediate horizontal segment, L, , may be of zero length. ASCE Pipeline Design for Installation by Horizontal Directional Drilling, CAPP Planning Horizontal Directional Drilling for Pipeline Construction, MAB-07 (2020) - MAB Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of HDPE (PE4710) Pipe in Municipal Applications, Slavin, Larry and Petroff, Larry (2010). This material is significantly tougher than older, previous polyethylene (PE) products, facilitating successful completion of more complicated, difficult maxi-HDD projects. Soils containing high percentage of gravel and cobbles are best avoided unless the contractor is especially experienced in the conditions. PART 1 GENERAL 1.1 DESCRIPTION Section includes requirements for Horizontal Directional Drilling (HDD) of High-Density Polyethylene (HDPE) Pressure Sewer pipe. This page was last edited on 12 December 2022, at 19:58. The number of construction personnel is relatively small, and at least 10-20 people are required for manual excavation, while only 7 people are used for pipeline directional drilling technology. Wire-line locating system The wire-line system is a magnetic guidance system. printed as a PDF file or as a paper file. Next, the bore created during pilot hole drilling is enlarged to a diameter that will facilitate installation of the desired pipeline. At a minimum, it should be able to provide the necessary pulling force, based on the estimated required pulling force for the pipe itself, with possible additional capacity for accomplishing reaming. Smaller diameter PE100 pipe can be pulled in directly from a coil trailer via a straightener re-rounder. select the wall type based on those results and other factors. With a magnetic guidance system (MGS), the tool reads inclination and azimuth. %%EOF FIGURE 1 illustrates the operation in a city or urban application. %%EOF 0000009554 00000 n [citation needed], For longer more challenging crossings, tractor trailer mounted drills capable of 1,320,000 lbs (thrust/pullback force) and 150,000 ft-lbs (rotary force) may be used [600 tonnes- 204,000 N-M ]. Polyethylene pipe is the pipe of choice for trenchless installations using directional drilling. Pipeline Design for Installation by Horizontal Directional Drilling -. HDPE Electrofusion Welding Fitting with Bar Code, HDPE Fittings Butt Fusion Welding Fitting, CPVC Pipe& Fittings ASTM Schedule Series SCH40 and SCH80, UPVC Pipe& Fittings ASTM Schedule Series SCH40 and SCH80, UPVC Pipes and Fittings Underground Drainage and Sewerage Pipes, UPVC Pipes and Fittings pipes for Irrigation System, Modified Polyvinyl Chloride (PVC-M) Pipes, CPVC Pipes and Fittings for Hot and Cold Water, UPVC Conduits for Underground Telecommunication Cable, PVC (or PVCU) Rubber Ring Joints in PN10 and PN16, PVC (or PVCU) Solvent-Cement Fittings in PN10 and PN16, 63-250mm Hydraulic Butt Fusion Welding Machine, 160-315mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 225-400mm Semi-Automatic Hydraulic Butt Welding Fusion Machine, 40-355mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 200-800mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 630-2000mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 400-630mm Semi-Automatic Hydraulic Butt Fusion Welding Machine, 90-355mm CNC Automatic Hydraulic Butt Fusion Welding Machine, 200-1000mm CNC Automatic Hydraulic Butt Fusion Welding Machine, 630-2000mm CNC Automatic Hydraulic Butt Fusion Welding Machine, 20-1600mm Fully Automatic Electro Fusion Welding Machine, 63-200mm Manual Rotated Butt Fusion Welding Machine 2 Rings, 63-250mm Boutique Manual Rotated Butt Fusion Welding Machine 4 Rings, 63-200mm Manual Rotated Type Butt Fusion Welding Machine 4 Rings, 63-200mm Manual Rotated Type Butt Fusion Welding Machine 2 Rings, 63-200mm Manual Push Type Butt Fusion Welding Machine, Geomembrane Welding Machine BGT-800 Series, Geomembrane Welding Machine BGT-900 Series, HDPE Butt Fusion Injection Flange Adapter(Stub End with Back Ring), HDPE Electrofusion Stub End(Flange Adaptor), Polypropylene Compression 90 Degree Elbow, HDPE Flange Adaptor/Stub End SDR7.4 and SDR9, Fabricated HDPE Reducing Cross Pipe Fitting, HDPE Fabricated Reducing Tee with concentric or eccentric end, HDPE Pipes and Fittings for Fire Fighting, HDPE Hot Wedge Welding Machine BGT-GM Serie, Geomembrane Hot Air Welding Machine BGT-700, Dual Heating Extrusion Welder Series BGT-600A/B/C, Dual Heating Extrusion Welder Series BGT-610A/B/C, Single Heating Extrusion Welder BGT-600E/600F/610E, Plastic Granules Extrusion Welding Machine BGT-620, High Density Polyethylene Trenchless Pipes For Horizontal Directional Drilling, Bingo pipeline(Customer brand is available), QA & QC system, Ensure traceability of each process. [citation needed], Location and guidance of the drilling head is an important part of the drilling operation, as the drilling head is under the ground while drilling and, in most cases, not visible from the ground surface. For larger diameter pipes, which are supplied in straight sections, these sections should normally be fused together to form a single continuous length of pipe prior to commencing the pull-in operation. It has a wide range of applications and is not affected by water currents, climate and environment. 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The exposed leading end of the pipe should be inspected for possible damage and a pressure or leakage test may be required, for fluid transport applications. This phenomenon is referred to as the capstan effect, as it is the principle of the capstan winch, as illustrated in FIGURE 5. Any pipe installed by HDD is subject to loads of a different type and/or magnitude than are experienced in other construction methods, including by direct burial in a trench. In contrast, tooling intended to navigate soft soils may be limited to high carbon steel (milled to a desired shape and size). Such effects are independent of the pipe stiffness, pipe diameter, borehole clearance, radius of curvature or direction of curvature, and, in some cases become a major consideration due to their compounding effect. PIPE REAMING - TECHNIQUE was originally approved in 1999, following development within the ASTMs F17.67 Trenchless Technology Subcommittee. Since uncontrolled drilling can lead to damage, different agencies/government authorities owning the urban right-of-way or the utilities have rules for safe work execution. Although pipe stiffness effects may generally be ignored for flexible PE pipe, there is a potentially important effect can be due to route bends or any path curvature of significance.
