Bursting Method
Replenishment of Pipes and Hydraulic Networks Through the Exploitation Method
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Technology without Ditch is the term used to define the applied engineering to place the pipeline in its line, almost without opening trench and it includes a series of diverse methods and technologies to rehabilitate and install diverse old pipes and lines; this engineering offers us a new way of working in obsolete lines that transport different fluids. The rehabilitation of pipes by exploding methodology is the adequate engineering to renew lines without opening trench, only some accesses, in addition that offers unparalleled benefits such as:
open only 5% of the ditch
the cost is less than open trench
It is quick to install
The material used as HDPE is resistant and its useful life is guaranteed for 50 years or more
In countries where proper maintenance is not given and where their old lines are left to reach 100% of their useful life, they are highly recommendable since they can be installed even with a good degree of sediment and with collapsed pipes.
The method in summary consists of a bullet-shaped tool of the diameter of the pipe to be renewed and which is attached to the new line at one end and to a cable on the other and passes through the tube to be replaced; using a winch, this tool is pulled which breaks the previous tube (it "explodes") while the TKP tube occupies the space to cover the length between access and access.
The liquid conduction capacity of this pipeline is higher than that of the same diameter of concrete, asbestos cement or mud, that is to say, with the same diameter of rehabilitation, there is 15% more conduction capacity. The load and voltage resistance is much higher than the other pipes, it is more flexible and can be used almost in all needs, such as drinking water, drainage, gas, rainwater, etc., For this the rehabilitation with pipelines High density polyethylene by the bursting method becomes the first method for rehabilitation of obsolete lines, with hydraulic engineering without trench.
We develop your projects integrally. Our engineering department is ready to support and advise you, leave our solution to your needs in the hands of our engineers.
Directional Drilling Method
Installation of Pipes and Hydraulic Networks Using the Directional Drilling Method
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The Horizontal Directional Drilling Industry has experienced so much growth in the last two decades that it has become a common method of installation. This growth has been driven by the fact that the impact on those affected by public services is less:
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as the elimination of traffic disruption​
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the minimum damage area​
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the costs are lower
Some of the earliest uses of directional drilling is river crossing. Since it offers minimal environmental damage and there is no interruption of river traffic.
The knowledge of the drilling process begins with a small horizontal hole (pilot hole) under the crossing obstacle (for example, a road) with a continuous chain of the steel drill rod. The head of the rod emerges on the opposite side of the traverse, a special cutter, called a reamer, is attached by the pilot hole. The reamer corrodes the pilot hole, so you can pull the tube through the hole. The tube is usually pulled through the side of the crossover in front of the drilling platform being pulled up to the platform, it really is a very fast process.
We develop your projects integrally. Our engineering department is ready to support and advise you, leave our solution to your needs in the hands of our engineers.
Slip Linning method
Installation of Pipelines and Hydraulic Networks Using the Slip Linning Method
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The effects of the continuous deterioration of a gas pipeline could be quite drastic and expensive. A drainage system by ruinous gravity allows the infiltration of substances from groundwater, which increases the volume of flow and reduces the available hydraulic capacity of the existing line. So the old pipeline often increases treatment and transportation costs for the intended flow stream and continuous exfiltration can also erode the soil surrounding the pipe structure and eventually cause soil subsidence.
The case of positive pressure pipes is somewhat different, but the results are equally unacceptable. In this situation, leaks through the existing pipeline allow the exfiltration of the contents of the flow stream that eventually lead to property damage or contamination of water resources. In addition, in many cases, the content of the flow stream is sufficiently valuable that its loss through exfiltration becomes another economic factor. The HDPE tube provides an excellent solution to the problem. This is because the standard PE pipe joining method uses a heat fusion process that results in a monolithic pipe system, meaning the joints are as strong as the pipe itself, and leak-free.
When the harmful results of pipeline deterioration become evident, we must find the most economical method that will restore the original function or leave the damaged system. The excavation and replacement of the damaged structure can be prohibitively expensive and also interrupt the service for which the original line is repaired. An alternative method for restoration is "jacketed" or "insert renewal" with polyethylene tubing. More than 30 years of field experience shows that this is a proven means of profitability that provides a new pipe structure with minimal service interruption, surface traffic, or property damage that would be caused by extensive excavation.
The method involves entering the damaged line at strategic points within the system and then inserting sections of polyethylene pipe, such as a continuous pipe, along the existing pipe structure. This technique has been used to rehabilitate gravity drains, sanitary pipelines, water pipes, drainage lines, gas conduction lines, road drains and storm drains, and other pipeline structures with very satisfactory results.
The mechanical connections are used to connect PE pipe systems to each other and to connect the PE pipe systems to other materials and pipe systems.
Select a line pipe diameter to reach a maximum flow capacity, choosing the largest possible diameter for the lining of the pipe. This is limited by the size and condition of the original pipe through which it is inserted. Sufficient distance will be required during the sliding coating process to ensure smooth insertion, taking into account the grade and direction, the replacement of connections and the structural integrity of the existing pipe system.
The selection of a polyethylene liner having an outer diameter 10% smaller than the inner diameter of the pipe to be rehabilitated will generally serve two purposes. First, this size differential usually provides adequate space to accommodate the insertion process. Second, 75% to 100% or more of the original flow capacity can be maintained. A differential of less than 10% can provide adequate clearance in larger diameter pipe structures. It is quite common to select a differential of 5% to 10% for pipe systems with diameters greater than 24 inches, assuming that the conditions of the existing pipe structure allow the insertion of the new pipe.
We develop your projects integrally. Our engineering department is ready to support and advise you, leave our solution to your needs in the hands of our engineers.
Installation of Marine Hydraulic Pipes
Installation of Marine Pipelines and Hydraulic Networks
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Polyethylene (PE) pipes have been increasingly used for various marine applications such as emitters of fluvial and lacustrine effluents, water body crossings and in fresh and salt water intakes. Immunity to galvanic corrosion is an important reason for the selection of HDPE. The combination of air and water, but in particular seawater, can be very corrosive to ordinary metal pipe materials. But other beneficial features, as follows, combine to make PE pipes especially suitable for marine applications:
Light weight - For a given pipe diameter and equivalent performance requirements, the weight of the PE pipe is about one tenth of the weight of the concrete pipe and less than half that of the cast iron. PE handling requires a minimum of heavy equipment, for installation.
Fleet - because the PE density is about 96% of freshwater, and about 94% of that of seawater, the PE pipeline floats EVEN WHEN it is full of water. Long lengths can be mounted on the coast and carried floating to the end of the line.
Thermofused connections - Through the butt fusion method, continuous lengths of PE pipe can be easily assembled without the need for mechanical adjustments. The resulting heat fusion joints are as strong as the pipe, and they eliminate the risk of joints leaking.
Flexibility - The flexibility of the PE pipe allows it to sink slowly and adapt to the natural topography of the bottom surfaces. This results in a more simplified procedure to sink it, and also means that the pipe can normally be placed directly on the natural bottom without any ditch digging or other form of continuous level support preparation.
Ductility - Due to its relatively high capacity to withstand stress, PE pipes can safely adjust to the external variable forces generated by waves and hangovers. Its high deformation capacity also allows the PE pipe to change or bend to accommodate the bottom.
Conventional, non-flexible materials such as concrete or iron pipe can only afford relatively small deformations before risking leaks in, or structural failure of the connections. As the exact magnitude of the maximum forces that can act in rigid pipes is difficult to predict, facilities that use pipes that only allow relatively small deformation in the joints, or limited bending deformation in the pipe, requires a large "safety factor" , such as a relatively heavy load to stabilize the tube against movement, or the opening of ditches in the pipeline in the sediments of the seabed in order to stabilize it against the movement that may result from the sea action. Such construction techniques tend to be more difficult, time consuming and relatively expensive. In contrast, the flexibility and ductility of PE allows it to adapt to un-leveled river and sea beds, and also to safely change or bend under the forces resulting from occasionally strong currents or other actions. For most marine installations, PE pipe needs are limited to having the tube sufficiently fastened to keep it in the intended location and to prevent it from floating. This results in easier and less expensive installations and, in a submerged piping system that is capable of delivering a very reliable and durable service. When choosing TKP pipes, many projects have been accomplished, which would not have been economically feasible with traditional pipe materials.
Float and sink method: Installation steps.
In almost all underwater applications, the design and installation of PE pipes consists of the following basic steps:
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The selection of an appropriate pipe diameter.
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The selection of an appropriate SDR pipe (ie an adequate wall thickness) in the examination of the intended installation and use conditions
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Selection of the design, weight and frequency of separation of the ballast weights that will be used to sink and then hold the tube in its intended location
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Selection of an appropriate site for staging, joining and launching the pipeline
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Preparation of the land-water transition zone and, when necessary, the template under water
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Assembly of the individual lengths of the pipe in a continuous pipeline
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Assembly of ballast weights (This step can be done in conjunction with the next step).
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Join the pipe lingadas in the water
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Submersion of the pipe in the specified place
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Completion of the transition from land to water
Installation of Aerial pipes
Installation of water pipes, several feet above the ground, supported on racks
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The horizontal pipes supported are affected by the weight of the pipe and its volume and the danger is that it hangs between supports. When the curve or deflection between supports is minimized, the tension in the wall of the pipe is controlled. That is why the supports must be spaced according to the diameter of the pipe, its RD and the weight of the fluid inside to limit the deflection using a simple analysis of continuous beams. The maximum recommended deflection between supports is one inch
Brackets must wedge the pipeline at least four inches or 1.5 times the pipe diameter, whichever is the less. A minimum of 120 ° circumference of the pipe should be supported. The supports must be free of sharp edges.
Often, supported pipes are installed in the field. These facilities are exposed to temperature changes due to weather. If possible, the pipe supported or suspended should be installed almost close to the temperature of the operation in practice or in the hottest climate.
When a supported system is hotter than its installation temperature, the pipe expands. As the length increases in the pipes, lateral deviation or meandering occurs between the fasteners, the total amount of expansion that will occur will depend on the length of the pipe and the increase in temperature with respect to the original temperature at the time of installation of the system.