Gaza has a responsible mission - to take care so that we do not frozen and not starve. Meanwhile, he himself does not come to visit, for example, like a wind or sun, gas needs to be "invited" correctly, organize a green corridor and to file reliable "transport". Let's look at how to crash into the gas pipe according to the letter of the law and in hooligan - for those who like to tickle nerves, violating the rules.

Types of gas pipelines

The gas pipeline is a means for transportation and at the same time to store gas. These designs may vary depending on what mission is performed. For example, networks that provide the transmission of blue fuel to long distances naturally more powerful, the pressure in them is high. Because of this, "experimenting" with such systems is dangerous, you can provoke trouble, and regardless of not only you, and the neighbors. Let it be better to worry about how to make the cutting in the gas pipe of this format relevant services arriving on your application. From working on long-distance pipes, the pipes are departed, like vessels in a human circulatory system, small-called distribution pipes in which the pressure is lower than in the main networks. But it can also be varied - from low to high. With such structures, you can already try to "make friends" on your own, however, you need to clearly know what and how to do, as well as abide by security measures.

Insertion in the highway, of course, better entrust professionals

Features of the sings

What is inserting? Talking by a professional language, this is the accession of a new pipe to a working "relative" - \u200b\u200balready transporting blue fuel. Often the systems are connected without turning off the gas, even the main, but in this process there are important nuances. So let's look at how to crash into the gas pipe under pressure.

Rules for carrying out work

Remember the basic rules for handling these systems:

• the insert in a network with a low pressure is permissible to produce with pressure indicators not exceeding 80 mm water., but not lower than 20;
• joining the highways or high / average pressure networks is possible only after a decrease in its level to the permissible;
• if the pressure is impossible to reduce, you will have to find special equipment that allows you to make a cut in non-standard circumstances;
• working without reducing pressure under the law is allowed to carry out only the relevant - having permission to such a type of activity to organizations (sometimes even receiving a special outfit);
• welding and cutting with gas can be carried out in areas having a pressure from 40 to 150 kg / cm (and this corridor must be observed throughout the process).

Masters working with a gas network must have a special permit. Before starting the process, make sure that there is such a document from the Contractor

Types of inserts

You can connect a new network with a working system using such technologies:

1. Cold cut-in, in which the main pipeline works without changes (the volume of blue fuel in structures and feed pressure remains the same - working). For such a "scenario", gas networks of new users are often connected to the highway. Many folk craftsmen know how to crash into the gas pipe without welding, as this technology is relatively simple.
2. Welding, called the people "in the traditional way", is a reliable, tested technique, however, requiring certain qualifications and the availability of special access in connecting performers.

As for the methods of the insertion itself, they are divided into:

• coil, implying attachment to the end of the operating system;
• taving when the insert is done with the intersection of network axes.

Video: joining the gas system do it yourself

Process description

Compound of metal systems

1. Cleaning the surface. Remove from the place where they outlined to do the insert, paint, garbage, rust.
2. Marking. Determine where the connection will be, set the mark.
3. Doing holes (with a coil method - 1, with a taving method - 2).
4. Handling wells. The slots should be treated with clay, and it is recommended to start this process while decaying the surface in order to minimize the risk of combustion / ignition of the leaked blue fuel. The finished holes are able to close the most quickly as possible (made of asbestos and clay) with a plug. The processed place must be cooled.
5. Installation of the disconnecting device. When the metal is cooled, the plug can be opened to remove the cutting pipe fragment from the design. After eliminating the piece of metal in the slit, a non-disconnect device is placed, which is a set of discs from wood and rubber, as well as barbells with viscous clay. If you hold the brand method, there will be two such slots.
6. Installing nozzle. When the disconnecting device covered the slot, it's time to be taken for doing the main opening - under the joined (new pipe). Check the correctness of the diameter, it is possible that the markup will have to be corrected. Do the hole, install the nozzle. The junctions of the nozzle on both sides will make the turn, then close the valve on it.
7. Close up of the hole. So, the pipe is welded, now you need to weld a new pipe. To do this, first remove the remnants of the metal that appeared as a result of doing the basic slit. Insert them in your place, treat clay, and also make you evad. Check if the welding gas is missing (with soap).
8. Attaching a new pipe.

After installation, metal structures are preferably painted in order to protect them from corrosion

Insert in a plastic pipe

Increasingly, plastic structures are used more often for installation of engineering networks. If you need to connect to such a system, what to do? First, rejoice that the process will not be more complex than in the case of metal. Secondly, it is clearly followed by such recommendations.

Buy high-quality - factory, corresponding to GOST connecting elements (fittings), ideally metallic. Use the filling connection and special adhesive to increase the reliability of the seam. Watch the connection place to be perfectly sealed, has a maximum density. Insert before installing process the composition against corrosion.

How is the inserting itself in the case of plastic networks? Joining is done by creating inserts located perpendicular to the working system. The length of the inserts may vary within 70-100 cm. Building should occur with plastic pipes - based on the socket-pin connection. What is this technology? Steel insert warmes (approximately 60 degrees). And the plastic design is already planted on it, and, instantly and with force. If you crash into a medium pressure system, experts advise to connect to the "case" and powder polyethylene in order to make the connection as strong as possible.

This is where the plastic network is connected.

Cut into the gas pipe is definitely better with the help of professionals, however, owning the theory, you can experiment, meanwhile to solve only you.

Video: Box in the gas system using special equipment

If all work is carried out inside an organization that has appropriate tolerances and permission, it is required only to carry out the technical part of the work, and if there are no permissions, for example, to connect the private house to the gas supply system, then first of all need to be applied to the appropriate instances.

In cases where the illegal bubble in the gas pipeline is detected by the inspection authorities, serious penalties followed. The person responsible for this action will have to pay a full amount of the total amount of gas consumed and the dismantling of illegal connection. In some cases, such a frame can be qualified and as a criminal offense, that is, as theft and causing property damage.

Illegal cutting and its consequences

Most often, the illegal clamp is carried out by individuals disconnected from the gas pipeline for non-payment, or those who want to connect a house, a garage or any economic building without coordinating the project and pay, both the connection and the subsequent use of gas. Depending on how strong the damage was caused by the gas pipeline in the implementation of the insert, the amount of gas used, as well as the consent of either the consent of the guilty person to solve this issue in a peaceful way and pay all the necessary fines, administrative or criminal liability can be applied.

In the event of a particularly large damage and reluctance to reimburse it, as well as when identifying the fact that such inserts are not carried out for the first time, the articles of the Criminal Code of the Russian Federation (theft) and 165 may be applied to the guilty person (theft) and 165 (causing damage ). Therefore, it is better not to risk and get all the necessary permissions and conclude an appropriate agreement.

The illegal clip is almost always carried out with a violation of technological standards, which can lead to serious accidents and fires.

Types of gas pipelines and routing methods

The gas pipeline is a structure, the direct purpose of which is gas transportation using a pipeline. Depending on the purpose of the gas pipeline, natural gas can be supplied under different overpressure. So, for example, the main (transmitting gas for long distances) pipelines are only high pressure, and distribution (delivering gas to the final consumer): low, medium and high pressure.

The insertion in the gas pipeline under pressure without stopping the transportation of gas along the main line can be used both during the repair of the pipeline and when connecting individual consumers. The pipeline is working without interruptions, and the pressure and supply volume is not reduced. Such a method is called cold inserts. In addition, there is a more "traditional" method - welding pipes, which is considered very laborious and requires high qualifications and special access of the welder.

Modern technologies allow you to carry into a gas pipeline without discharge of pressure, but the process itself may differ depending on the pipe material that can be plastic or metal. Plastic gas pipelines are gradually gaining popularity due to the high performance and the possibility of laying in the most unfavorable conditions.

Pressing in a plastic gas pipeline

To create taps and other elements of the insertion into the ready-made system, it is desirable to use the shaped details, or fittings, the factory production of the corresponding GOST to reduce the risk of emergency situations in the future. Basically, metal fittings are used to the plastic pipes, metal fittings are used by a fusey compound, which after the installation is completed with special compositions.

The glue seam must have the maximum density and be completely sealed so that moisture does not succeed through it. The very steel insert must be treated with rust protecting, since moisture entering and corrosion processes can lead to the appearance of a cavern and discharge of the viniplast in the compound area.

Immediately the insertion is carried out by creating inserts from steel alloys perpendicular to the gas pipe. Each insert must have a length of from 70 to 100 cm and build up with plastic pipes by the socket connections. This method implies that a plastic pipe is planted to be heated to a temperature in an area of \u200b\u200b60 ° C with an effort. This method is applied to create taps from low-pressure gas pipelines, and for the average before increasing steel insert, it is necessary to put the future compound of powder polyethylene for a more dense clutch of two types of material.

Box in a gas pipeline made of metal pipes

Despite the development of technologies of plastic pipelines, the most common option remains a gas pipeline from steel pipes.

When installing the main and distribution gas pipelines, welding is another basic view of the compound. Pipelines, the pressure of which is more than 70 kPa, welded under the observance of strict rules extended by the Gosgortkhnadzor. Only those welders who have passed the appropriate training and have permission to be allowed to these works.

Welding pipes and its technology also largely depends on the material of the welded structure, but they are all welded mainly. Welded joints and types of seams are strictly designated by GOST and must be performed only in accordance with these requirements. These standards provide not only the type of seam, but also its size and location of parts at a different angle.

In accordance with this, the types of welded seams are determined:

• butt;
• tavry;
• vansel;
• angular.

Special attention is paid to the corner and brand (T-shaped) insert, as it is very important to avoid the undevelopment of seams and sub-cuts.

Before welding, gas pipelines must be prepared carefully: cleaned from rust and dirt, oxides and oils. The type of welding for the gas pipeline does not matter, therefore, they use both arcs and laser welding.

Without discharge of pressure in the pistal tube, the insertion into the metal gas pipeline can be implemented through the valve or using a special device called PGVM.

If a variant with a valve is used, then in this case the coupling and nozzle with the flange is welded to the trunk pipe to which the valve with the camera is attached. The hole in the pipe is cut out with a cup milling through the coupling, after which the carved fragment, like the bar itself with the cutter, is removed through the chamber and the valve closes. After that, the flange located on the valve can be connected with removal. Of the disadvantages of this method, you can select the need to install wells, as well as an uncomfortable location of the valve to the main pipe, which makes the operation less convenient.

The second method is the use of PGVM, a special device, which is designed to carry out the insertion in the active gas pipelines without discharge of pressure having a pipe diameter from 186 to 529 mm. This device performs insert by creating holes 80 and 140 mm in the wall of the gas pipe. The first thing to the gas pipe is welded a pipe that must have a diameter equal to the diameter of the connected removal, inside of which the sleeve is welded to the pipe wall. In the sleeve screws the stud, stock with a cutter and poured machine oil so that it exceeds the level of the pipe by 3 mm.

The compound flange is installed in the PGVM drive with the cutter drive, which the hole is cut in the tube of the required size. After that, the carved fragment is extracted, the drive, rod and milling cutter is removed, instead of which a threaded plug is installed and the entire system returns to the place. Then gas is opened, the plug worst into the nozzle, the PGVM device is removed and the threaded plug is boiled around the perimeter. Upon completion of the work with the help of a soap emulsion, the quality of welds is checked, and the gas pipeline and routing itself are securely are isolated.

The insertion in the gas pipeline, as well as any work related to gas highways, requires strictest safety compliance. The cutting should be made only by qualified specialists with admission to this type of work.

Do you want to organize a country house water supply by connecting it to the current central highway? Automatic water supply will significantly simplify the life of households, because right? But to implement your plan there is no possibility to overlap water in the main pipeline and you need to cut into a plumbing under pressure?

We will tell you how to perform a knock in practice, avoiding the disconnection of the consumer driven from the highway - the article considers the process of fulfilling the connection with all the requirements of the legislation. The material is equipped with thematic photographic materials and useful video reconditions.

The attentive study of the stages of connecting to the central water supply of their household will help to avoid fines for violation of existing norms during unauthorized ripping in the pipeline. If you wish, you can also save, after performing a part of the earthworks on your own.

Works on the insertion into the plumbing highways, as without welding, it is impossible to be carried out without obtaining appropriate permissions.

The fulfillment of the illegal frame is traditionally completed by attracting the owner to material and administrative responsibility.

Gallery of images

The insertion into the operating steel gas pipeline under pressure in each particular case is developed individually, and includes the following steps:

• study of the executive and technical documentation submitted by the construction organization;
• justification of the method of accession and sequence of work; Procedure for disconnecting the area from gas supply or reduced gas pressure on the network;
• sequence of the inserting of the gas pipeline; Procedure for blowing a gas pipeline and commissioning of a newly attached gas pipeline; the need for mechanisms, devices, materials, tools, personal protective equipment and fire extinguishing;
• safety technique when performing work; selection and instructions of the brigade;
• the system of alert and consumers about the time of work and termination of gas supply or reduce gas pressure on the network.

Apply the following methods of attachment to the existing gas pipelines:

• to existing low pressure networks without a decrease in gas pressure;
• low, medium or high pressures - with a decrease in gas pressure up to 400 - 1000 Pa;
• middle and high pressures - using special devices that do not require reduction in gas pressure.

The insertion into the active gas pipelines without reducing the pressure in them is allowed only under the condition of applying a special device that excludes the gas output to the outside.

The insertion can be made in different ways:

The end device (using the groove clutch) is used by reducing the gas pressure to 400 pa, when the new gas pipeline is a continuation of the acting or when it is necessary to connect two parts of the active gas pipelines. The supervision coupling is made of a detachment of two parts with a diameter of 15-20 mm more than the outer diameter of the connected pipes. On the joined gas pipeline, weld the supervision coupling, then first on the attachment, and then on the active gas pipelines, cover the ends of the pipes along with the plugs and immediately overlap the coupling to the acting gas pipeline for a length of at least 70 mm. The gaps between the pipe and the coupling are sealing, the ends of the coupling are faded and welded to the pectorist.

Taurus connection to the acting gas supply (using a visor) is used to remove the gas pipeline with a diameter of 50 - 800 mm at a right angle in one plane with a valid gas pipeline.

Telescopic method of attachment to the active gas pipeline Used to remove the gas pipeline with a diameter of 50 - 200 mm at an angle of 90 in one plane with valid. Two connecting pipes are pre-made: the first diameter of 15 to 20 mm is greater than the outer diameter of the attached gas pipeline and a length of 800 mm, the second - with a diameter of 15-20 mm more than the outer diameter of the first nozzle and a length of 100-150 mm. The first pipe is coming to the joined gas pipeline, the second is welded to the acting gas pipeline so that their axes coincide. Inside the nozzle in the wall of the acting gas pipeline, a window is cut, the size of which corresponds to the diameter of the joined gas pipeline. The cut window is removed and fuses the first pipe into the second, and the gaps between the pipes close as a asbestos. After removing the air from the attachment node, the ends of the first nozzle are faded and welded. Works on the attachment of gas pipelines to the current networks without interruption of gas supply are performed in gas masks.

Middle and high pressure gas pipelines for existing networks join, reducing or not reducing the pressure in them. After a decrease in gas pressure, the connection is carried out by these methods. The lack of them is a break in the supply of gas to consumers receiving it from the site, which produced a decrease in pressure.

The new gas pipeline to the current can be connected without reducing the gas pressure - through the valve or using the PVGM fixture - the development of the Institute of Gimbarium. The procedure for performing accession is as follows:

1. manufacture connecting nozzle, threaded sleeve on the inner surface and a threaded plug according to the drawings given in the factory instruction for using the PVGM-09 device;
2. the pipe of the operating gas pipeline at the point of joining the cleaning of isolation and to its surface weld the sleeve having a thread on the inner surface;
3. on the sleeve, set a template with an outer planting diameter 86 or 144 millimeters depending on the diameter of the sinking;
4. poll to install on the template and weld to the pipe of the acting gas pipeline. On the outer thread of the nozzle, screw the flange; To compact the compound on the threads of the nozzle to wind the linen fiber for sealing, mow into the rod pipe with the fixed cutter;
5. the joined gas pipeline to weld to the pipe, on the flange of which to strengthen the girlfriend, and to put on the gland to put the gland to the flange chamber, to attach it to the flange and tighten the roof stuffing.
6. attach the drive invention to the nozzle, cut the hole in the tube of the active gas pipeline, cut out the proportion of the pipe to the gauge chamber, break the gas access to the upper share of the chamber;
7. remove the drive from the nozzle, the gland chamber, rod with a cutter and with a cut part of the pipe. Replace the rod stock with a plug;
8. in the hole of the gland camera insert the rod with a plug, on the thread of which to compact the linen fiber. Plug to put in the girdle chamber. The glands and the girdle cameras to strengthen on the flange of the girder chamber. On the square of the rod to put the handle. By turning the handle of the three-way crane to equalize the pressure at the upper and lower parts of the girlfriend. Open the gate damper by pressing the rod, bring the threaded plug before the stop into the threads of the connecting pipe and the handle to complete before the stop in the bin. Remove sequentially surp and girder chambers. Bilk threaded cork to weld around the perimeter to the flange of the connecting pipe;
9. isolate the scene of the insert;
10. after accepting the place of the insertion, a representative of the gas economy fall asleep care;
11. earthworks on the chickens of the pit and his backfill are carried out by the forces of specialized construction and assembly organizations.