Depending on the location and extent of the operation, a variety of permits or approvals may be required, possibly from federal, state or local jurisdictions. 1.2 QUALITY ASSURANCE A. was originally approved in 1999, following development within the ASTMs F17.67 Trenchless Technology Subcommittee. Actual ID will vary. Installation lengths are typically 30m and greater. Horizontal drilling or Utility Installation Directional Drilling, minimizes environmental impact and is often used when trenching or excavating is not a practical or viable option. 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. The MGS, also has a secondary means of location verification utilizing wire grids laid on the ground surface. 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. 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. 19), PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council Output can be emailed directly from the Calculator, or 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. 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. He can be reached at lslavin@ieee.org. However, they are sufficiently general to consider the possible implementation of anti-buoyancy measures to reduce these otherwise high frictional forces. 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. 745 0 obj <> endobj 0000018683 00000 n The pipe must be securely gripped, including a swivel and possible breakaway link. 0000002811 00000 n Horizontal Directional Drilling or HDD, is a steerable trenchless method of installing underground pipe, conduit, or cable in a shallow arc along a prescribe. The use of HDPE pipes in trenchless technology is rapidly becoming a repair building and civil engineering The preferred method of domain pipeline. 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. As the use of trenchless technology continues to grow in popularity and use, so too does the importance of using top-quality pipe material that meets the specific requirements of the particular technique being used. 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. 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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. 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. According to industry standards, quality plastic pipe should endure in excess of 100 years without failure. Pipes installed by HDD may increase in diameter, and therefore decrease in length, when pressurised, which will result in some axial tension. 0000019257 00000 n Drill bit location for smaller and shallow installations is typically transmitted by a battery powered sonde, located just behind the bit, the signals being picked up by a receiver operated at the surface. There is no request too small or job too complex. 4506 0 obj <>stream Day Activities . These pits will allow the drilling fluid to be collected and reclaimed to reduce costs and prevent waste. 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. Unnecessarily large curvatures (sharp bends) also contribute to bending stresses in the HDPE pipe, but generally are not significant for such a flexible product. Safety and environmental considerations (Section 5). 0000002386 00000 n Especially HDPE raw materials have good adhesion and toughness. It is using a simple flat blade slant face head for drilling in clay, the excavation being typically sized for man entry piecing up. Directional boring can be utilized to cross any number of surface obstacles including roadways, railroads, wetlands, and water bodies of varying sizes/depths. For larger diameters, and in rock, the drilled material must be removed from the bored hole as drilling and reaming progresses. Those directly related to the setup and operation of the maxi-HDD equipment (machine and hydraulic operations, as well as the drilling fluid under high pressure). As-built drawings must be provided, preferably supplemented with details of the soil characteristics and drilling operation. High-density polyethylene pipes are now widely used in the sewer industry. Trenchless technologies, such as horizontal directional drilling, pipe bursting and slip lining allow the entire water supply and drainage system of a city to be replaced without causing a major traffic jam and incurring the enormous cost of restoring streets and roads. 0000020409 00000 n Thus, ASTM International F 1962 provides a means of determining project feasibility, as well as initial design information. This is not a technique to which the lowest price wins the contract principle should be applied. These two images show a small directional drilling rig being unloaded to install 100 metres of 100mm PE distribution main, and in place ready to start drilling. %%EOF Pipe Design and Selection Considerations (Section 8). startxref Used in the oil industry to cross the river oil pipeline, Used in power system for the telecommunications cable conduit, Used in the construction of municipal drainage pipelines, Water and gas pipeline network transformation. Toggle navigation. This method is regularly used on distribution systems, which typically use small diameter mains, and on rural distribution systems it often enables mains to be installed alongside the carriageway without impeding traffic flow, as the drilling equipment is compact and self contained. Polyethylene pipe is the pipe of choice for trenchless installations using directional drilling. Including River Crossings. Pipeline Design for Installation by Horizontal Directional Drilling -. International, Inc., 2015, pg. 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. %%EOF The reamer's diameter depends on the size of the pipe to be pulled back through the bore hole. Image Courtesy:Exova Utilities, Barrel Reamer.Image Courtesy:Exova Utilities, Mud recycling plant. Directional drilling is the drilling of non vertical wells. All material subject to strictly enforced copyright laws. This is to be avoided if at all possible. 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. Typical Maxi-HDD Route (Obstacle or River Crossing) (Courtesy of Outside Plant Consulting Services, Inc.), FIGURE 5. We have a full line of products to suit your HDD needs. The third stage places the product or casing pipe in the enlarged hole by way of the drill stem; it is pulled behind the reamer to allow centering of the pipe in the newly reamed path. The tensile load on the pipe during installation must be calculated to establish whether it exceeds the maximum allowable load. It can be used on land, sea, urban areas and rivers. 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. Additional route bends, beyond those shown in. 0000029482 00000 n It's flexibility, strength and fused joints as strong as the original pipe itself, make it ideal for HDD applications. Advancement of tooling within loose uncemented soils is largely accomplished by hydraulic excavation. COPYING AND DISTRIBUTING ARE PROHIBITED WITHOUT PERMISSION OF THE PUBLISHER. Learn about the various stages of construction. The use requires that the operator have complete information about existing utilities so that they can plan the alignment to avoid damaging those utilities. As the name denotes, trenchless technology requires few or no trenches to be dug for the maintenance work to be done and can be defined as, A family of methods, materials, and equipment capable of being used for the installation of new or replacement or the rehabilitation of existing underground infrastructure.. 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 driller increases the diameter according to the outer diameter of the conduit and to achieve optimal production. 4487 0 obj <> endobj The primary focus is on commonly used high-density polyethylene (HDPE) pipe with a material designation code of PE4710. Alternate materials will require prior approval. [citation needed], Horizontal directional drilling is done with the help of a viscous fluid known as drilling fluid. Furthermore, any construction procedure must address basic safety rules, avoid damage to existing facilities, adhere to applicable government regulations, and consider environmental issues. This weight is a function of the drilling fluid/slurrys density, for which a conservatively high value is suggested for design purposes. HDD Analyser is a comprehensive program for the design analysis of pipelines crossings by horizontal direction drilling methodology. Chapter 11 - Pipeline Rehabilitation by Sliplining with PE Pipe Chapter 12 - Horizontal Directional Drilling Chapter 13 - HVAC Applications for PE Pipe Chapter 14 - Duct and Conduit Chapter 15 - General Guidelines for Repairing Buried PE Potable Water Pressure Pipes Chapter 16 - Pipe Bursting Glossary Abbreviations Index The effect of shear forces directly imparted on the surface of the pipe by the drilling fluid (fluidic drag) has been handled in a widely disparate manner within the industry and is sometimes a major consideration. 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 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. Now Available: ASTM Guide for Use of Maxi-HDD Placing HDPE Pipe Under Obstacles. 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. Next, the bore created during pilot hole drilling is enlarged to a diameter that will facilitate installation of the desired pipeline. HDD Analyser performs the pipeline stress analysis and HDD design calculation in compliance with the International Codes and Standards. It should first be allowed to reach mechanical and thermal equilibrium, to avoid shrink back onto the bore hole. DNVGL-ST-F101: Code Check ; ASME B31.4/B31.8 Code Check . This arc follows a preset bore path using a surface drilling rig. A result shown in Green and with a Safety Factor 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. For standardization of the techniques, different trenchless technology promoting organizations have developed guidelines for this technique. The pipe bursting method is in full compliance with all federal regulations and guidelines. Horizontal directional drilling is often used where open cut installations are not feasible, such as road and river crossings. The image above shows a sonde and battery fitted inside a slant face drilling head. 0000009554 00000 n FIGURE 2 illustrates a typical geometry for a maxi-HDD operation, in this case corresponding to a river crossing. Drilling fluid may escape to the surface or other facilities unless carefully managed. Most soil and rock types can be drilled with the appropriate tooling and processes. [citation needed], The technique has extensive use in urban areas for developing subsurface utilities as it helps in avoiding extensive open cut trenches. This information is transmitted through the wire-line fitted within the drill string. FIGURE 2 illustrates a typical geometry for a maxi-HDD operation, in this case corresponding to a river crossing. 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. W9 ]9-j?aV088I The theoretical basis of the formulae for estimating the required pulling force is provided below. On inaccessible projects such as river crossings or where the bore is at significant depth and where a surface receiver cannot be used, the drilling head location information is typically sent from the drill bit by a wireline system, via a wire running along the inside of the drill rods. Tensions induced in the PE pipe, as it passes any curve, become amplified because the tensile forces tend to pull the pipe against the curved surface. Such results could be further refined by competent engineering expertise, including analysis of pipe and soil characteristics and interaction, often including the use of relatively sophisticated software tools, possibly based on the ASTM F1962 methodology. 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. Relevant material properties for PE pipe, such as safe pulling tension/stress, are also provided in the document. At the surface a receiver (usually a hand-held. endstream endobj 750 0 obj <>stream H|SQO0~W#. Experience: Actively engaged in horizontal directional drilling for minimum of 3 years. Broken water pipe in Jackson, Miss., leaks 5 million gallons per day, Much of Florida Keys loses water pressure after main break, Texas lawmakers prepare to set aside billions to upgrade states aging water system, Job Complications Lead To AXIS System Solution, $3 million grant funding broadband internet installation in rural Michigan communities, Rewiring Floridas Intracoastal Movable Bridges Via HDD. 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. 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 Safe for the environment, recyclable and does not emit hazardous toxins during manufacturing or installation. Where large parts of the route of the main are not accessible, such as for river crossings, horizontal directional drilling is a much less costly technique than tunnelling, and can be used for large diameters, such as trunk mains. FIGURE 1 illustrates the operation in a city or urban application. MDPE and HDPE pipes shall conform to the current ASTM D1248, ASTM D2513, ASTM D3350, and ASTM F714. Wire-line locating system The wire-line system is a magnetic guidance system. 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. [citation needed], PR-277-144507-Z01 Installation of Pipelines by Horizontal Directional Drilling Engineering Design Guide (Arlington, VA: Pipeline Research Council It should not be used in place of the advice from a licensed Professional Engineer. greater than 1.0 indicates that the displayed wall type will have 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. 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. hbbd```b``k$T "7> At 180mm the maximum length on a coil is generally 100 metres, and smaller diameters can be longer. Drilling mud is used to cool the cutter and transmitter electronics, to flush excavated soil from the borehole and to lubricate the borehole. In the absence of anti-buoyancy techniques, such as internal water ballast, the frictional drag developed within the borehole is generally much greater than that developed outside, because of the high buoyant weight for an empty PE pipe. The physical properties of the PE4710 material allow greater pulling forces and also provide greater resistance to collapse. The technique is routinely used when conventional trenching or excavating is not practical or when minimal surface disturbance is required. several outputs are shown simultaneously, along with a summary of the For such cases, the buoyant weight of the submerged pipe, in combination with the corresponding frictional characteristics, is the major factor in determining the required pull force. Horizontal directional drilling (HDD) is a safe method of installing an underground pipeline. 1.2 QUALITY ASSURANCE Experience: Actively engaged in horizontal directional drilling for minimum of 3 years. Day 1 Equipment Arrives Days 2-5 Locate and identify utilities . Horizontal Directional Drilling Plastic Pipe (HDPE & MDPE) Home; HDD (Polyethylene Pipe) - Input; Please [ Log . xref %PDF-1.5 % This picture shows a slant face drilling bit, also fitted with carbide tipped teeth that enable it to penetrate hard ground. ((H`|JSgy>_)gk]f2%a!gS0qF&)0C@WF%`cJ!Q8x`1f'H#\oe5MaKR28(.n3Z1CUjGTC+o0kBJ0N t-A K:Xyd89EtL}vfAhdQ;>!E@y@}[hE_8 . The pulling load on the polyethylene pipe must not exceed the allowable tensile load, or safe pull strength of the pipe. The first stage drills a pilot hole on the designed path, and the second stage (reaming) enlarges the hole by passing a larger cutting tool known as the back reamer. Joints in traditional piping materials are the biggest source of leakage. 0000018014 00000 n User Inputs. Directional boring offers significant environmental advantages over traditional cut and cover . Residential neighbourhoods remain unscathed, commercial districts do not have to deal with loss of business, and rural regions remain undisturbed. 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. This will require a check of ID and OD to ensure that flow capacity and external clearances are still adequate. 0000016392 00000 n Soils containing high percentage of gravel and cobbles are best avoided unless the contractor is especially experienced in the conditions. D2dIFya 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>]>> Related keywords :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.
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