The benefits of using HDPE for this applications are: Pipefusion provides polyethylene pipe, on-site fusion services, molded and fabricated fittings and custom fabrication to Directional Drilling contractors across Canada. The drilling fluid is sent into a machine called a reclaimer which removes the drill cuttings and maintains the proper viscosity of the fluid. Zj? %%EOF HDD Analyser is a comprehensive program for the design analysis of pipelines crossings by horizontal direction drilling methodology. Soils containing high percentage of gravel and cobbles are best avoided unless the contractor is especially experienced in the conditions. 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. 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. In contrast, tooling intended to navigate soft soils may be limited to high carbon steel (milled to a desired shape and size). It is important to properly use the drilling fluid for the initial pilot bore and reaming operations, and to accurately locate and track the bore path. 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. 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. 0000021965 00000 n North American Society for Trenchless Technology (NASTT), (2008). The stiffness of the steel drill rods determines their allowable curvature, in order to avoid fatigue. [citation needed], The process starts with the receiving hole and entrance pits. 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. While the document provides useful information for evaluating the potential for collapse under lateral pressures, either during of following installation, the most widely used portion of ASTM F1962 are the formulae for estimating the pulling tensions corresponding to the leading end of the pipe reaching point A, B, C and D. These formulae account for the frictional drag acting on the pipe along the surface of the borehole, primarily due to the high buoyant weight of the HDPE pipe, within the relatively dense drilling fluid, especially for vacant pipe. It was reissued in 2005 and 2011, and previously reinstated in 2020. It is a mixture of water and, usually, bentonite or polymer continuously pumped to the cutting head or drill bit to facilitate the removal of cuttings, stabilize the bore hole, cool the cutting head, and lubricate the passage of the product pipe. several outputs are shown simultaneously, along with a summary of the This will require a check of ID and OD to ensure that flow capacity and external clearances are still adequate. Certain users require weak links that fail before the pipe if overload occurs but this will result in a partly installed pipe with no means of completing the installation without major disruption, cost and delay. Table X3.1 provides the critical collapse pressure for HDPE/PE4710 pipes as a function of load duration and wall thickness. 29), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council 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. water tanks, spoil containers, etc.) 0000021613 00000 n First, a small diameter pilot hole is drilled along a directional path from one surface point to another. It should first be allowed to reach mechanical and thermal equilibrium, to avoid shrink back onto the bore hole. The use of HDPE pipes in trenchless technology is rapidly becoming a repair building and civil engineering The preferred method of domain pipeline. 0000010170 00000 n Day Activities . The term "directional boring" or "bore" is generally reserved for mini/small sized drilling rigs, small diameter bores, and crossing lengths in terms of hundreds of feet. The initial decision involves selecting the size and capacity of the machine. Add: 13th F, Longyu International Building, Zhengzhou Area(Zhengdong), China(Henan) Pilot Free Trade Zone. 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. PDF Pr9788 - Specification for Horizontal Directional Drilling - Unitywater Pipes installed by HDD may increase in diameter, and therefore decrease in length, when pressurised, which will result in some axial tension. The bore is steered to create an initial hole at the required line and grade. Gyro-based locating system The gyro based system is fully autonomous and therefore one of the most accurate systems where sufficient diameter, HDD Design Guideline Task Committee of the Technical Committee on Trenchless Installation of Pipelines (TIPS) of the Pipeline Division of the American Society of Civil Engineers. 0 If the calculation shows that the maximum permissible load may be exceeded then it may be necessary to increase the capacity of the PE100 pipe by increasing its thickness. HDD of Plastic Pipes | all about pipelines In addition, there should be a detailed subsurface investigation, including test borings and soil analysis, to confirm the general suitability for the drilling operation, and to determine the appropriate equipment and hardware. 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. Pipe hdd drilling, slant drilling, horizontal directional drilling good practices guidelines, drill guide for pipe, utility horizontal directional drilling, directional drilling manual, directional drilling through rock, how much does a directional driller make, horizontal directional boring specifications, small directional drill, back reaming drilling definition, horizontal pipe rollers, directional drill back reamers, horizontal directional drilling specifications hdpe, how to drill horizontally, small directional boring machine, horizontal directional drilling procedure, hdd drilling procedure, horizontal drilling techniques, horizontal bore, hdd drilling equipment, hdd machine price, straight line directional drilling, horizontal directional drilling process, horizontal directional drilling standards, horizontal direct drilling, horizontal drill guide, dig and rig equipment, what is horizontal directional drilling, drilling pipes, horizontal drilling equipment, horizontal directional drilling rig, how do they drill horizontally, what is slant drilling, drilling pipe sizes, directional drilling methods, horizontal directional drilling guidelines, horizontal directional drilling design guidelines, horizontal directional drilling machine, horizontal directional drilling specifications, hdd pipe, barrel reamer hdd, horizontal directional drilling equipment, PE100+ Association 2013-2023 - All rights reserved. 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. Directional boring can be utilized with various pipe materials such as PVC, polyethylene, polypropylene, ductile iron, and steel provided that the pipe's properties (wall thickness and material strength) enable it to be both installed and operated (if applicable) under acceptable stress limits. Download HDPE Handbook Chapters - Plastic Pipe Mini-HDD operations are often performed during an upgrade of a large community, comprising many individual installations, with any single installation typically not receiving extensive investigation or analysis. ?5Hb0CB$ 17C``!Dc@ q [citation needed], For smaller bores, proportionally smaller and more portable equipment is available. 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. He can be reached at lslavin@ieee.org. Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of HDPE (PE4710) Pipe in Municipal Applications. select the wall type based on those results and other factors. The ASTM standard specifically addresses polyethylene (PE) pipe, a flexible product, for which the effects of any bending stiffness on drag forces at route bends or path curvature may be ignored. Horizontal Directional Drilling Conduit - PVC Pipe PDF Standard Specifications Horizontal Directional Drilling Part 1 General Next, the bore created during pilot hole drilling is enlarged to a diameter that will facilitate installation of the desired pipeline. ASTM International F1962, Standard Guide for Use of Maxi-Horizontal Directional Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Including River Crossings, provides recommended procedures for the placement of PE pipe using maxi-HDD. Where cables and other utilities are identified in close proximity to the proposed alignment they should be exposed so that progress of the drilling can be monitored and stopped if required. The ASTM International document provides overall guidelines, addressing preliminary site investigation, safety and environmental considerations, regulations and damage prevention, bore path layout and design, implementation, and inspection and site cleanup. endstream endobj startxref It has a wide range of applications and is not affected by water currents, climate and environment. ASCE Pipelines 2014. Monitoring and contingency planning should be in place prior to and during drilling below or in the proximity of environmentally sensitive locations. This phenomenon is referred to as the capstan effect, as it is the principle of the capstan winch, as illustrated in. 0 Table 5 - Safe Pull Loads for HDPE Pipes 24. iii Foreword Polyethylene Pipe for Horizontal Directional Drilling is one of the chapters being pre-pared for inclusion in the Plastics Pipe Institutes PPI Handbook of Polyethylene Pip-ing, which will be issued as a complete volume in the future. 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. While ASTM International F1962 may be purchased from the ASTM International website (www.ASTM.org), the overall guidelines, including preliminary investigation and implementation procedures, as well as the detailed design methodology for selection of the proper pipe strength, are reflected inChapter 12 of the Plastic Pipe Institute (PPI) Handbook of Polyethylene Pipe, In addition, the ASTM International F1962 methodology is now available in a free online tool designated asPPI BoreAid. Joints in traditional piping materials are the biggest source of leakage. At diameters up to and including 180mm the new pipe can be supplied as a coil, and this will be loaded into and dispensed from a coil trailer, positioned adjacent to or over the entry excavation. Thus, a commonly used procedure for difficult or very long installations is to fill the pipe with water to reduce the buoyancy. illustrates a typical geometry for a maxi-HDD operation, in this case corresponding to a river crossing. ABOUT THE AUTHOR: Lawrence Slavin, Ph.D., provides outside plant consulting services as a member of IEEE, the worlds largest technical professional organization dedicated to advancing technology for the benefit of humanity. Installation lengths are typically 30m and greater. Sustainability : environmental position paper, Examples of Reference Installations of PE 100+ pipes, Close Fit Lining: Roller Reduction (Rolldown), Standards and Codes of Practice for PE100 water & gas pipe. 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. Drilling for Placement of Polyethylene Pipe or Conduit Under Obstacles, Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig. The pipe must be securely gripped, including a swivel and possible breakaway link. Nonetheless, some mini-HDD installations may be considered to be relatively critical, or approach limits with respect to the capability of the available drill rig and/or the strength of the product pipe being installed. 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.. Horizontal Directional Drilling, Pipe Bursting, Microtunnelling and Pipe Jacking, Rev 1, February 2010; b. However, they are sufficiently general to consider the possible implementation of anti-buoyancy measures to reduce these otherwise high frictional forces. 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. 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. PDF Horizontal Directional Drilling - ISCO Industries and Material (type of HDPE). Our site uses cookies necessary for its proper functioning. 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 The tensile load on the pipe during installation must be calculated to establish whether it exceeds the maximum allowable load. Hn0EYZJ2^u6*u.!Z'3:f[@]p!1HvELiF|Uku mSYQ'IS`2"q ,`-*{|dcHgQcm=JpjW 0000009915 00000 n 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. Software tools are based on the ASTM F1962 document and model. While considered convenient and practical to apply by experienced engineers for a maxi-HDD operation, the overall ASTM International F1962 procedure and guidelines represent a relatively extensive, tedious process, when considering smaller, lower cost operations associated with typical mini-HDD applications. Pipeline design for installation by horizontal directional drilling -, Skonberg, Eric R., and Tennyson M. Muindi. Thus, FIGURE 2 shows the drilling operation proceeding from right to left, in contrast to FIGURE 1, where the drilling proceeds from left to right. See also Excavations, pit sizes, Space and Access. This arc follows a preset bore path using a surface drilling rig. Co., LTD, lyondellBasell, PetroChina Dushanzi Petrochemical Company, Prime Polymer, SABIC, SCG & Thai Polyethylene, Sinopec, and Tasnee. The primary focus is on commonly used high-density polyethylene (HDPE) pipe with a material designation code of PE4710. Residential neighbourhoods remain unscathed, commercial districts do not have to deal with loss of business, and rural regions remain undisturbed. 3), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council For diameters greater than 180mm, the pipe should be made into a continuous string by butt fusion of straight lengths, and sufficient space must be available on site to make up and store the string ready for installation. The drilling mud lubricates and cools the drilling tools, as well as providing support to the periphery of the bore. %%EOF Midi-HDD equipment may be used for crossing beneath rivers and roadways. This picture shows a small barrel reamer attached to the new pipe ready to be pulled in. Polyethylene pipe is the pipe of choice for trenchless installations using directional drilling. startxref 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. The development of trenchless technology to rehabilitate existing underground infrastructure with minimal disruption to surface traffic, business, and other activities, has left a lasting impact on the construction and civil engineering industries. Experience: Actively engaged in horizontal directional drilling for minimum of 3 years. MAB-08 (2022) - MAB Guidelines for Fusing HDPE Pipe in Cold and Inclement Weather, Horizontal Directional Drilling Estimating Pipe Pulling Tensions, Dr. Lawrence M. Slavin, Aug 2022. High-density polyethylene pipes are now widely used in the sewer industry. 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. 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. Especially HDPE raw materials have good adhesion and toughness. Including River Crossings. Its convenient methodology for selecting an appropriate pipe strength (wall-thickness), based on the project characteristics, has led to its increasing popularity and widespread usage within industry. Typical Maxi-HDD Operation (Courtesy of Murphy Pipeline Contractors), FIGURE 2. Typical Maxi-HDD Route (Obstacle or River Crossing) (Courtesy of Outside Plant Consulting Services, Inc.), FIGURE 5. MDPE and HDPE pipes shall conform to the current ASTM D1248, ASTM D2513, ASTM D3350, and ASTM F714. A result shown in Green and with a Safety Factor 0000029412 00000 n 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. ~U4chn~ _ Image Courtesy:Exova Utilities. Recycled water pipeline completed in Encinitas, Calif. The image above shows a straightener re-rounder being used on a 180mm pipe, and whilst it is in the trench here, it can be attached to the coil trailer if so desired. Safe for the environment, recyclable and does not emit hazardous toxins during manufacturing or installation. %PDF-1.6 % 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.
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