It is used for crossing waterways, roadways, shore approaches, congested areas, environmentally sensitive areas, and areas where other methods are costlier or not possible. One of the most significant contributions of ASTM F1962 is the provision of a rational, analytical method for selecting the pipe strength based on estimated installation loads on the PE pipe. For the geometry shown in FIGURE 2, with relatively shallow entry and exit angles, the associated load amplification due to this effect is not major; although for more complex paths, the effect could be very important. The drill rig and auxiliary equipment located on the pipe exit side are relatively large, and require water access, storage, and mixing and pumping facilities. Allowable pulling loads are based on a minimum tensile yield strength of 3,500 pounds per square inch (psi), with a significant reduction to limit non-recoverable viscoelastic deformation, as well as account for the effective cumulative load duration on the pipe (assumed to be 12 hours), resulting in a safe pull stress of 1,330 psi. Horizontal Directional Drilling (HDD) Calculator with HDSS - U.S. Pipe Pipeline geo-environmental design and geohazard management. These may include the need to file environmental, health and safety plans, or permits for passing beneath waterways, and there may be special requirements for drilling beneath railroads. Pipeline Design for Installation by Horizontal Directional Drilling -. Noise and air pollution are also kept to a minimum and rehabilitation time is short. Horizontal Directional Drilling Good Practices, 3rd Edition; c. The Plastics Industry Pipe Association of Australia (PIPA); d. Water Services Association of Australia (WSAA . Because the operator of the drilling rig might not notice a momentarily excessive pulling force, a load link inserted between the swivel and the PE100 pipe to record pulling load can be used to record the maximum axial load exerted on the pipe. 4498 0 obj <>/Filter/FlateDecode/ID[<4208EEF0A5E3F94484FA965871FBCC68><35164F1782C1CE48B496975219464345>]/Index[4487 20]/Info 4486 0 R/Length 74/Prev 887916/Root 4488 0 R/Size 4507/Type/XRef/W[1 3 1]>>stream These pipelines can not only provide a design life of 100 years, but also provide solutions to major industry challenges such as corrosion and high leakage rates. In addition to external pressures, due to the head of the relatively dense drilling fluid/slurry or subsequent (post-installation) soil loads, the pipe must withstand the axial tensions induced during the pullback process. Horizontal directional drilling is used to connect underground pipes, wires, cables, and ducts with a trenchless underground drill technique that minimizes damage to infrastructure and environment. The cutting head is then removed and a back-reamer attached. It's flexibility, strength and fused joints as strong as the original pipe itself, make it ideal for HDD applications. Advantages of the High Density Polyethylene Trenchless Pipes For Horizontal Directional Drilling The biggest advantage of HDPE HDPE trenchless pipes for HDD besides its long-life expectancy, is its heat-fused joints, which make the pipe a single homogenous pipeline. HDPE conduit, also known as PE conduit, is the preferred material to house and protect electrical power and communications cables in typical applications such as power utilities, telecommunications, CATV, SCADA, FTTH, ITS, highway lighting, and other underground utilities. Including River Crossings. 0000016763 00000 n hbbd``b`$mA,k D\ The Conduit Design Calculator automates the Mini-HDD calculations described in PPI TR-46 Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of High Density Polyethylene Pipe.. Figure 2. The drill is launched from one end of the designed bore path and retrieved at the other end, and except for the launch and retrieving spaces above ground, the entire process takes place underground . 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. 2022 Underground Construction, 2022 Gulf Publishing Holdings LLC. Special Conditions for Horizontal Directional Drilling (Hdd) 349 0 obj <> endobj Along with the recent developments in drilling equipment and operator expertise, there has been, and will continue to be, a dramatic increase in the installation of water and sewer systems using directional drilling. Alternate materials will require prior approval. 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. Horizontal directional drilling is often used where open cut installations are not feasible, such as road and river crossings. The drilling fluid is sent into a machine called a reclaimer which removes the drill cuttings and maintains the proper viscosity of the fluid. This picture shows a small barrel reamer attached to the new pipe ready to be pulled in. Hn0EYZJ2^u6*u.!Z'3:f[@]p!1HvELiF|Uku mSYQ'IS`2"q ,`-*{|dcHgQcm=JpjW 380 0 obj <>stream illustrates a typical geometry for a maxi-HDD operation, in this case corresponding to a river crossing. As-built drawings must be provided, preferably supplemented with details of the soil characteristics and drilling operation. The size, complexity and need for additional support equipment increases generally as the pipe diameter and length increase. 0000020409 00000 n TR-46, Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of High Density Polyethylene Pipe, was therefore developed to serve as an inclusive document, providing practices for selection and placement of HDPE pipe using mini-HDD. v. Hinueber, Edgar (iMAR Navigation) (2006). This material is significantly tougher than older, previously used PE products, facilitating successful completion of more complicated, difficult maxi-HDD projects. Orlandos Richard Howard brought global view, acclaim to innovative public works program, Utility and communications: Construction Update, RehabZone continues to educate infrastructure industry, Underground Infrastructure Conference moves to OKC in 2024, Technical guide to variations of close-fit liners for mainline pipe, Cloud platform gives communities control over their revenue management destiny, ICE KING Launches new service to help with workforce hydration needs, Hyundai Offers Wheel Loader Guarding Package, Improved Compact Excavator. The route of the new main should be carefully investigated to identify any potential clashes with existing buried infrastructure and, where necessary, the exact locations of any such clashes should be proved by trial holing. It has a wide range of applications and is not affected by water currents, climate and environment. Horizontal Directional Drilling - Plastic Pipe PDF Horizontal Directional Drilling Plan - Snohomish County PUD for a specific application. To improve your experience, other cookies may be used: you can choose to disable them. 0000017340 00000 n Especially HDPE raw materials have good adhesion and toughness. Joints in traditional piping materials are the biggest source of leakage. HDD Analyser performs the pipeline stress analysis and HDD design calculation in compliance with the International Codes and Standards. Reliable communications must be in place between the pipe entry location and the drilling rig operator, so the rig can be stopped immediately if required. The indicated bore/pipe path comprises three segments spanning the pipe entry (point A) to its exit point (point D), with horizontal projected distance Lbore, equal to the sum of the three horizontal (projected) segments L2, L3 and L4. Image Courtesy:Exova Utilities, Barrel Reamer.Image Courtesy:Exova Utilities, Mud recycling plant. The pipe entry side, opposite the drill rig, must accommodate the long length of assembled (fused) pipe. Horizontal Directional Drilling - YouTube 0000004689 00000 n The project quality is good. A clogged bore creates back pressure on the cutting head, slowing production. Scope, referenced documents and terminology. path, and other project variables, to determine the Calculated Tensile Although the TR-46 guidelines are primarily intended for mini-HDD operations, depending on the particular project, the information may also be applicable to a midi-HDD installation. 0 At no time during welding or installation must the pipe be allowed to drag on the ground and it must therefore be supported on rollers, though it should be stored directly on the ground to avoid indentations from supporting rollers or timbers if there is to be a delay in installation. In some situations, more than one wall type will have sufficient Nominal pressure (PN) is based on C = 1,25 and an operating temperature of 20C. Section includes requirements for Horizontal Directional Drilling (HDD) of High Density Polyethylene (HDPE) Pressure Sewer pipe. The output of the Calculator can be used to assist the User in to facilitate typical operations. 0000002811 00000 n Pilot holes are enlarged in pre-reaming stages using a reamer (soft soils) or a hole opener (rock). HDD, also known as directional boring, was developed in the early 1960s and was first used by the oil and gas industry on large-diameter, cross-country pipeline transmission line installations. 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. Unnecessarily large curvatures (sharp bends) also contribute to bending stresses in the HDPE pipe, but generally are not significant for such a flexible product. Those associated with accidentally striking buried electric power lines or other existing pipelines. The ASTM document provides overall guidelines for a maxi-HDD operation, addressing preliminary site investigation; safety and environmental considerations, regulations and damage prevention; bore path layout and design; implementation; and inspection and site cleanup. Calculator allows, users are recommended to review PPI TR-46 and/or ASTM User Inputs. This information is encoded into an electromagnetic signal and transmitted through the ground to the surface in a walk-over system. Horizontal directional drilling shall consist of the drilling of a small diameter pilot hole from one end of the alignment to the other, followed by enlarging the hole diameter for the pipeline insertion. 12), Last edited on 12 December 2022, at 19:58, "Fant ny lsning som gir gravefri tilkobling av hus til hovedvannledning", https://en.wikipedia.org/w/index.php?title=Directional_boring&oldid=1127080039, Walk-over locating system A sonde, or transmitter, behind the bore head registers angle, rotation, direction, and temperature data. The most significant was to the alternative guidelines TR-46 provided by the Plastics Pipe Institute (which has been superseded by its Municipal Advisory Boards MAB-7), as more appropriate for mini-HDD operations. The planned bore path, such as illustrated in FIGURE 2, must be consistent with the steering capability of the maxi-HDD equipment, and the bending capability of the drill rods. 0000015903 00000 n endstream endobj 746 0 obj <>/Metadata 20 0 R/OCProperties<>/OCGs[758 0 R]>>/PageLabels 741 0 R/PageLayout/OneColumn/Pages 743 0 R/PieceInfo<>>>/StructTreeRoot 24 0 R/Type/Catalog>> endobj 747 0 obj <>/Font<>/ProcSet[/PDF/Text]/Properties<>>>/Rotate 0/StructParents 0/Tabs/S/Type/Page>> endobj 748 0 obj <>stream Although ASTM F1962 is intended for carefully designed, well-controlled maxi-HDD installations, the methodology has been extended, via appropriate assumptions and mathematical simplifications, to provide a simpler methodology that may be advantageously applied to typical, less-controlled mini-HDD projects. Compared with traditional trenching and buried pipes, it has better technical, environmental protection and economical efficiency, and is suitable for crossing streets, highways, railways, buildings, and rivers, especially in downtown areas, historic sites, green belts, where excavation is impossible or unsuitable areas. Horizontal directional drilling (HDD) is a cost-effective method for installing polyethylene (PE) gas pipe in urban and congested suburban areas, and many gas utilities have come to appreciate its advantages. ASTM F1962, Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, was originally approved in 1999, following development within the ASTMs F17.67 Trenchless Technology Subcommittee. For a drill of this length, with a pull back of 10 inch HDPE pipe, the anticipated schedule is set out in Table 2: Table 2. 0000021965 00000 n PDF Direct Comparison of Hdd and Open-cut Pipe Installation Underneath These pits will allow the drilling fluid to be collected and reclaimed to reduce costs and prevent waste. 0000020956 00000 n The initial decision involves selecting the size and capacity of the machine. ASTM F1962 addresses the overall planning and design, product selection and installation practices for the placement of PE pipe using maxi-HDD equipment. as referenced in the 2022 edition of ASTM F1962. Horizontal drilling, one type of directional drilling, is a method that is used to install pipes, conduits and cables underground in a long shallow arc. For the larger diameters, the equipment is large, and requires support equipment such as generators and hydraulic power units. NyPipe offers quality products, competitive pricing and reliable service. hTYO0OG >rKR(PQ9Fg&% [citation needed], Horizontal directional drilling is done with the help of a viscous fluid known as drilling fluid. printed as a PDF file or as a paper file. It is using a simple flat blade slant face head for drilling in clay, the excavation being typically sized for man entry piecing up. Now Available: ASTM Guide for Use of Maxi-HDD Placing HDPE Pipe Under Obstacles. Generally, the term Horizontal Directional Drilling (HDD) is intended to describe large/maxi sized drilling rigs, large diameter bores, and crossing lengths in terms of thousands of feet. <<32159D5C8C60A744B61AE13533FBF1FA>]>> It was reissued in 2005 and 2011, and previously reinstated in 2020. 349 32 ASTM F1962 contains 10 main chapters or sections, as briefly described below, supplemented by several appendices. 0 [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. HDPE pipes are ideal for pulling through long, underground holes as they are flexible, robust, and resistant to almost all aggressive elements. The biggest advantage of HDPE HDPE trenchless pipes for HDD besides its long-life expectancy, is its heat-fused joints, which make the pipe a single homogenous pipeline. 0000019257 00000 n According to industry standards, quality plastic pipe should endure in excess of 100 years without failure. 0000000936 00000 n Our site uses cookies necessary for its proper functioning. In contrast, the convenient model employed in ASTM F1962 results in a very low magnitude effect, which is directly added to the estimated pulling forces, due to frictional drag, including the capstan effect. Drilling mud is used to cool the cutter and transmitter electronics, to flush excavated soil from the borehole and to lubricate the borehole. Drilling fluid holds the cuttings in suspension to prevent them from clogging the bore. There is no request too small or job too complex. Due to the magnitude and complexity of maxi-HDD equipment and control systems, a well-trained, experienced crew is essential to plan and execute the operation. 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. PIPE REAMING - TECHNIQUE 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. Lengths well in excess of 1000m can be installed with this technique, though depending upon the diameter required the limiting factor may be the axial load capacity of the PE100 pipe for pull-back into the bore. Midi-HDD equipment may be used for crossing beneath rivers and roadways. endstream endobj 749 0 obj <>stream Residential neighbourhoods remain unscathed, commercial districts do not have to deal with loss of business, and rural regions remain undisturbed. This is to be avoided if at all possible. When drilling through harder ground formations and in rock a mud motor is used to drive the drilling bit independently of drill rod rotation. FIGURE 2 illustrates a typical geometry for a maxi-HDD operation, in this case corresponding to a river crossing. Horizontal Directional Drilling or HDD, is a steerable trenchless method of installing underground pipe, conduit, or cable in a shallow arc along a prescribe. Pipeline design for installation by horizontal directional drilling -, Skonberg, Eric R., and Tennyson M. Muindi. For the larger diameters typically used for such applications, PE pipe is supplied in discrete segments that are fused together in the field, with essentially no loss in tensile strength, facilitating the pulling operation. Chapter 12 Horizontal Directional Drilling 416 borehole on pullback. In many instances, smaller bores do not require the use of drilling fluid, only water, and in even less significant bores no fluids at all. PDF Standard Specifications Horizontal Directional Drilling Part 1 General It was reissued in 2005 and 2011, and previously reinstated in 2020. Pipefusion is a supplier of high density polyethylene pipe (HDPE) available in solid wall, perforated, profile wall, insulated and gas applications. 0000019826 00000 n The intermediate horizontal segment, L, , may be of zero length. Image Courtesy:Exova Utilities, Pipe coil trailer loaded with 100metres of 180mm PE pipe. The recent (2022) edition of ASTM F1962 has revised the relevant physical characteristics of the PE materials, providing the physical properties for the most recent high density polyethylene (HDPE) material, PE4710. Welcome customers to visit the factory, or third party factory inspection is acceptable. He can be reached at lslavin@ieee.org. It's flexibility, strength and fused joints as strong as the original pipe itself, make it ideal for HDD applications. Corresponding changes to the document, if any, were minimal, including providing additional or updated references. For direct comparison, two instrumented 200mm SDR-17 DIPS HDPE pipes were . Contact us today for a free quote. 19), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council Pipe reaming, also known as pipe eating, is a trenchless pipe replacement technique that removes the host pipe while at the same time installing a new replacement pipe. Whilst the drilling equipment is able to drill down from the surface at the start and come back up to the surface at the exit, there does need to be an excavation at each end to act as a sump for drilling fluid reclamation, but the most critical factor is to provide the space to transfer the new pipe from ground level down to the bore, and this will depend upon both the diameter and length of the installed pipe. Engineering HDD for PE pipe | Hart Energy 1.1 Pipe Approved materials for HDD include: medium-density polyethylene (MDPE), high-density polyethylene (HDPE), steel, fusible PVC, restrained joint PVC, and ductile iron pipe. Thus, a commonly used procedure for difficult or very long installations is to fill the pipe with water to reduce the buoyancy. They also have many advantages in terms of cost-effectiveness, minimal impact on the environment, and safer processes. Pipefusion provides high density polyethylene pipe, on-site fusion services, fittings and much more to Directional Drilling contractors across Ontario. Horizontal directional drilling is often used where open cut installations are not feasible, such as road and river crossings. High-density polyethylene pipe is the most common type of pipe used in the directional drilling market and is used for 49.7% of projects. Pull Strength of the conduit in terms of Diameter Type (IPS, SIDR, or Wire-line locating system The wire-line system is a magnetic guidance system. The tensile load on the pipe during installation must be calculated to establish whether it exceeds the maximum allowable load. Lighter, stronger and cheaper to transport and install resulting in projects delivered on time and on budget; Joins seamlessly using heat fusion techniques resulting in less down time and less fittings and one continuous, permanent leak proof system; Lowimpact installation practices such as horizontal directional drilling and other trenchless operations result in minimized social disruption and reduced construction costs; Highly flexible and can withstand stress and as a result can conform to earth movements due to earthquakes and ground shifts without pipeline cracks or leaks; Impact and fatigue resistant resulting in increased life cycle performance and decreased tangible capital asset management costs over time; High performance resins, such a s PE 4710, make the pipe corrosion and chemical resistant resulting in pipes that last longer and perform better; Accepts repetitive pressure surges that significantly exceed the static pressure rating; Environmentally friendly and uses less energy to manufacture. The planned bore path, such as illustrated in. The Conduit Design Calculator is a software tool that aids in determining the most appropriate wall thickness of high-density polyethylene (HDPE) conduit installed via horizontal directional drilling (HDD) techniques. Within rock formations, hydraulic excavation is still taking place to some degree (evacuating spoil) but the lion's share of cutting and breaking up material is due to mechanical work being done by the tool itself. Pipe manufacturers can advise on the allowable loads. Horizontal Directional Drilling Plastic Pipe (HDPE & MDPE) Home; HDD (Polyethylene Pipe) - Input; Please [ Log . hb```i|@Y8Ldhp`iPpgpg#LK:pt2&55/a?aOJ3h13(81dU 8vk& 47kQK\ V'Pj{r e7*fp7D ~aKr+dXi-@%q[cqSxj'VJmxj U[z'. The methodology of advancement also varies somewhat between soil and rock crossings. [citation needed], PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council 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. [citation needed], Directional boring is used for installing infrastructure such as telecom and power cable conduits, water lines, sewer lines, gas lines, oil lines, product pipelines, and environmental remediation casings. 0000021613 00000 n Soils containing high percentage of gravel and cobbles are best avoided unless the contractor is especially experienced in the conditions. Day Activities . Add: 13th F, Longyu International Building, Zhengzhou Area(Zhengdong), China(Henan) Pilot Free Trade Zone. 757 0 obj <>/Filter/FlateDecode/ID[<818473D849B370E99276959C150446C3><5862925C0F04774D9936C4C2CD7CF8D7>]/Index[745 21]/Info 744 0 R/Length 69/Prev 35703/Root 746 0 R/Size 766/Type/XRef/W[1 2 1]>>stream 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 drilling rigs suitable for installation of smaller diameters pipes are self-propelled rigs, typically track mounted, requiring little in the way of additional support equipment. \K~[QvKnoD>3QV,0rl!BgH;h#cl{Y u~\L5>?t=aX`GS]r@r&{BO9wj_ This technique involves drilling a pilot bore, generally along a closely defined shallow arc, and then, if necessary, enlarging the bore using a reamer or hole opener to create a bore large enough to accept the new PE100 pipe, which is generally pulled in behind a reamer. The risk of scoring of the pipe can be minimised by ensuring the reamed bore is of sufficient diameter and properly cleaned and proved prior to pipe pull-back. 4487 0 obj <> endobj The recent (2022) edition of ASTM F1962 has revised the relevant physical characteristics of the PE materials, providing the physical properties for the most recent high density polyethylene (HDPE) material, PE4710. 0000002230 00000 n Horizontal Directional Drilling for Large Diameter Pipe - AGRU America This is a highly specialised technique, and needs an experienced and highly trained operating team, an essential member of which is the drilling mud technician, particularly on the larger diameters. [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 ]. 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