Monitoring and contingency planning should be in place prior to and during drilling below or in the proximity of environmentally sensitive locations. ASTM F1962 contains 10 main chapters or sections, as briefly described below, supplemented by several appendices. ASCE Pipelines 2014. 0000029587 00000 n D2dIFya This page was last edited on 12 December 2022, at 19:58. 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. 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. This phenomenon is referred to as the capstan effect, as it is the principle of the capstan winch, as illustrated in FIGURE 5. The stiffness of the steel drill rods determines their allowable curvature, in order to avoid fatigue. 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. This material is significantly tougher than older, previously used PE products, facilitating successful completion of more complicated, difficult maxi-HDD projects. 4506 0 obj <>stream endstream endobj 750 0 obj <>stream Calculator allows, users are recommended to review PPI TR-46 and/or ASTM The cutting head is then removed and a back-reamer attached. The pipe must be appropriately aligned with the bore and at an appropriate bending radius to avoid any risk of kinking. and Material (type of HDPE). Horizontal Directional Drilling Plan - February 29, 2012 . 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. 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. The bore is steered to create an initial hole at the required line and grade. Next, the bore created during pilot hole drilling is enlarged to a diameter that will facilitate installation of the desired pipeline. High-density polyethylene (HDPE) conduit is the preferred material to house and protect electrical power and telecommunications cables within. There are three types of locating equipment for locating the bore head: the walk-over locating system, the wire-line locating system and the gyro guided drilling, where a full inertial navigation system is located close to the drill head. Corresponding changes to the document, if any, were minimal, including providing additional or updated references. The two major sources of possible damage to the new pipe are excessive pulling force exerted if the pipe seizes during pull-back as might occur if some of the bore collapses, and scoring by any hard or rock fragments in the bore. ((H`|JSgy>_)gk]f2%a!gS0qF&)0C@WF%`cJ!Q8x`1f'H#\oe5MaKR28(.n3Z1CUjGTC+o0kBJ0N t-A K:Xyd89EtL}vfAhdQ;>!E@y@}[hE_8 . Problematic soil conditions include large grain content in the form of coarse gravel, cobbles, and boulders. The drilling mud lubricates and cools the drilling tools, as well as providing support to the periphery of the bore. CANTEX's CAN>LOC and CAN>GRIP systems offer many benefits over HDPE, which is the conduit most used for HDD applications. 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. It can be used on land, sea, urban areas and rivers. greater than 1.0 indicates that the displayed wall type will have illustrates the operation in a city or urban application. Advancement of tooling within loose uncemented soils is largely accomplished by hydraulic excavation. International, Inc., 2015, pg. 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. The staging of larger diameter and longer pipelines may require the use of pipe rollers and other facilities to ensure the pipe is not damaged during pull-back. The tensile load on the pipe during installation must be calculated to establish whether it exceeds the maximum allowable load. 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. For situations with burial depths or bore lengths beyond what the He can be reached at lslavin@ieee.org. Soils containing high percentage of gravel and cobbles are best avoided unless the contractor is especially experienced in the conditions. 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. Dead (empty) weight of the pipe above ground, Buoyant weight of the submerged pipe, possibly reduced by use of ballast). A result shown in Green and with a Safety Factor New York, NY: ASME, 2008. Whilst the rods are simultaneously rotated and pushed, the bore will, provided it is not deflected by some obstruction, proceed in a straight line, but if it is simply pushed without rotation it will deflect in the opposite direction to the slant face on the drilling head. 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. The procedure is straightforward and has been incorporated into various software tools, as an engineering and design aid for such projects. xref 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 The planned bore path, such as illustrated in. It should first be allowed to reach mechanical and thermal equilibrium, to avoid shrink back onto the bore hole. This information is encoded into an electromagnetic signal and transmitted through the ground to the surface in a walk-over system. Directional boring tooling includes the suite of drill bits or drill heads used during pilot hole operations, reamers and hole-openers used for hole enlargement, and swab tools which are used for hole conditioning and pullback. 0000017340 00000 n 0000019257 00000 n 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. To improve your experience, other cookies may be used: you can choose to disable them. 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. Relevant material properties for PE pipe, such as safe pulling tension/stress, are also provided in the document. 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. Directional boring can be utilized to cross any number of surface obstacles including roadways, railroads, wetlands, and water bodies of varying sizes/depths. 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. 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. 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. 0000002811 00000 n 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. 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. What truly separates HDPE from other pipe materials is that when it is fused together (using a wide variety of standard and custom components, fittings and joining systems) it creates one homogenous system that matches the same technical and environmental specifications as the HDPE pipe. Horizontal Directional Drilling B&B Supply, Inc. provides you with the equipment and supplies you need to bore it right the first time. The pipe must be securely gripped, including a swivel and possible breakaway link. The project quality is good. This handbook will cover 0000004070 00000 n Guidelines for Use of Mini-Horizontal Directional Drilling for Placement of HDPE (PE4710) Pipe in Municipal Applications. hTYO0OG >rKR(PQ9Fg&% One of the reasons why HDD is so effective is because directional boring contractors utilize polyethylene pipe. [4], The equipment used in directional boring depends on the length of the (proposed) crossing, the pipe properties (of the to-be-installed pipeline), and the (anticipated) subsurface conditions. 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. as referenced in the 2022 edition of ASTM F1962. 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. Once the User enters the required Input data and clicks Calculate, Truly international membership currently comprising 13 member companies: Borealis, Borouge, FPC, INEOS O&P, IRPC, Korea Petrochemical IND. Potential safety issues fall into two general categories: Although not considered to be hazardous materials, the proper handling and disposal of drilling fluid is also discussed to avoid possible environmental issues. Rizkalla, Moness. Horizontal Directional Drilling (HDD) Calculator with HDSS or TR FLEX Pipe Horizontal Directional Drilling / Trenchless Applications and Pulling Heads Frequently Asked Questions (FAQs) News About Us History Our Vision, Our Mission, Our Values Our Leadership About Quikrete Industry Links Terms & Conditions of Sale/Purchase Website Conditions of Use Safety and environmental considerations (Section 5). Weight is calculated using DN and Minimum wall plus 6% for use in estimating fluid flow. As-built drawings must be provided, preferably supplemented with details of the soil characteristics and drilling operation. When designing components to fit the pipe ID, refer to pipe dimensions and tolerances in the applicable pipe manufacturing specification. 0000010170 00000 n Image Courtesy: Exova Utilities, Large "maxi" drilling rig. 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. This information is transmitted through the wire-line fitted within the drill string. The initial decision involves selecting the size and capacity of the machine. ASTM F1962 is the only available ASTM standard for HDD. 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. 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. Residential neighbourhoods remain unscathed, commercial districts do not have to deal with loss of business, and rural regions remain undisturbed. Image Courtesy:Exova Utilities, Barrel Reamer.Image Courtesy:Exova Utilities, Mud recycling plant. selecting the most appropriate wall thickness of HDPE conduit to be used In some situations, more than one wall type will have sufficient 1.2 QUALITY ASSURANCE A. These pits will allow the drilling fluid to be collected and reclaimed to reduce costs and prevent waste. The HDPE Pipe Model, developed by the PE100+ Association with inputs from many industry experts, includes the most frequently asked questions and answers (Q&A's) of all the elements through the pipe system value chain: design, materials, construction, operation & maintenance, and environmental issues. At 180mm the maximum length on a coil is generally 100 metres, and smaller diameters can be longer. Large "maxi" drilling rig. It's flexibility, strength and fused joints as strong as the original pipe itself, make it ideal for HDD applications. They also have many advantages in terms of cost-effectiveness, minimal impact on the environment, and safer processes. hbbd```b``k$T "7> 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. Regulations and damage prevention (Section 6). [citation needed], The technique has extensive use in urban areas for developing subsurface utilities as it helps in avoiding extensive open cut trenches. Recycled water pipeline completed in Encinitas, Calif. 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. 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. 0000018683 00000 n 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. 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. 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. For larger diameters, and in rock, the drilled material must be removed from the bored hole as drilling and reaming progresses. Mini-HDD applications, for instance, tend to contain bore paths with additional curvature because of the need to avoid known obstacles or follow a curved right-of-way, as well as more subtle curvature due to path corrections characteristic or typically less precisely controlled installations. H|SQO0~W#. Add: 13th F, Longyu International Building, Zhengzhou Area(Zhengdong), China(Henan) Pilot Free Trade Zone. 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..
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