Of all the "utilities", gas is the most "nasty". Let's omit the cost of connecting to gas networks, which does not look justified at all. The gas pipeline can run right along the border of the site, but you will be charged more than a thousand dollars for the “connection” of two meters of pipes. This is what the "service organization" will take from you, in my case - "OdessaGaz". In addition, at your own expense, you will design and build a gas pipeline that will run through your site and to appliances inside the house. Needless to say, both the design and installation of this gas pipeline are carried out by “licensed” enterprises that also want to eat, and eat well. In general, the situation when the seller of goods requires the buyer to build an infrastructure for the delivery of goods seems absurd to me. It's like buying a milkman a car so he can sell milk to you in the morning.
Further more interesting. After you pay for all this infrastructure for delivering gas to your home, they also begin to dictate some requirements for its maintenance in the form in which it is convenient for the gas service, even if this contradicts your desires and existing norms.
For example: such a cute coloring of gas pipes in poisonous yellow, which our gas workers love so much and which they want to see on all facades, regardless of their color.
Not the most aesthetic option.
We take DBN V.2.5-20-2001, Gas supply. Reading. We find that “gas distribution points” are painted yellow, and not low-pressure gas pipelines for residential buildings. The gas distribution point is something like this:
For low-pressure gas pipelines used in residential buildings, only the number of layers of primer and paint, plus the type of coloring material (which is logical - the gas pipeline must be protected from corrosion), are established, but not the color. So the requirements to disfigure your facade can be safely ignored.
Next interesting point- ban on concealed installation» indoor gas pipeline. According to the interpretation of gas service workers, this means that all gas pipes the inside of your house should stick out in plain sight (and be painted yellow, huh) and sew them up with something you can't. When I was told this for the first time, I simply brushed it aside, but during the installation process I was persistently accustomed to the idea that these pipes on the walls are now part of my life and it’s better for me to make friends with them right now. I had to rummage again in the same DBN, after which it turned out that the hidden installation of the gas pipeline is an absolutely permissible thing, you just need to provide access to it using any removable panels and ventilation of the space in which it is located. Again, quite logical requirements - if you have a leak, it is in your best interest to smell it as quickly as possible so that the gas does not accumulate in an enclosed space.
So we are fighting the insanity of the gas services with actions of civil disobedience - we paint the pipes in any color that suits us and hide them behind beautiful panels!
Often the question arises of how to paint gas system, and whether it is allowed at all. It is necessary to understand what colors of paint to paint the pipes, what types of dyes are allowed to be painted and how to apply paint on the surface of the pipes.
What is it for?
Painting gas communications is far from an aesthetic matter. This is required in order to:
1. Determine the color of the gas pipeline, do not confuse it with other types of pipes. This is especially necessary in industrial enterprises, in boiler houses. Naturally, by outward signs and the color of the pipes, it is much easier to determine the desired line, in contrast to studying all the documents for decoupling.
An important nuance should be called the fact that it is necessary to mark gas pipes by color only for industrial enterprises or when above ground. There are no government requirements for living quarters, both inside and outside.
2. Create protection against corrosive formations. Since there are no oxygen accumulations and water vapor inside the pipe, the long-term operation is directly dependent on the level of resistance to corrosive formations of external surfaces.
Color solution
What color to paint the gas lines?
According to the source of information (Gas Distribution System Safety Rules), painting occurs as follows:
1. The gas pipeline passing above the ground must be painted with two layers of yellow paint. Lacquer and enamel of the same color is also allowed. The coloring matter must meet the requirements of the substance for working outside the product. Color marking is necessary to identify the object.
2. The gas system that runs over the facades of the structure may have the color of the structures that enclose it.
Painting of internal gas pipeline structures inside residential premises and the color scheme for them are not provided at all.
Owner search
Who is responsible for painting the gas pipe? Many people ask this question. Unfortunately, the person responsible for such a process in each individual case has to be found separately. In such cases, it is necessary to be guided by the maintenance contract for the gas pipeline.
In certain areas, responsibility is distributed in this way :
1. In apartment buildings pipeline lines inside each apartment must be painted by the owners of the apartments. Those gas pipes that run along facades, porches or streets must be painted by the gas supply companies or the local utility (the terms of the service contract should contain such obligations). To separate the zone, one must be guided by the walls of the apartments. It must be taken into account that such duties relate only to painting pipes. And here are the maintenance actions regarding locking elements fittings must be carried out only by the gas service.
2. In private houses, the gas pipeline located on a private plot is painted by the owners of the house. The gas pipeline located on a public site is painted by representatives of the gas service. The gas pipeline that runs through the private territory of the house may be controlled by the organization that supplies the gas, but then such an authority may require the owners of the houses to pay for the service of painting gas pipeline structures.
Varieties of paints
What should be the paint?
External gas pipeline systems
In short, for painting external gas pipes, any coloring matter that has anti-corrosion properties and is intended for outdoor use is quite appropriate, for example:
1. Alkyd enamel. This is a well-known substance. It lays down a thin, but durable layer, which, among other things, is resistant to precipitation. It can last up to five years, and the cost of one kilogram of enamel does not exceed 60 rubles.
2. Polyurethane paint. It differs from other representatives of dyes in its adhesion, in addition, it has a good elastic structure. Durability is determined within 12 years.
3. Epoxy paint, consisting of two components. Such substances have not quite elastic uniformity, but wear out for a long time.
4. Electrically conductive substance. It has dispersions of aluminum and zinc (see. Such a coating is considered the most reliable protector against corrosion formations. This type of paint, after it dries, forms a unique film on the pipe, which ensures long-term durability of black steel structures.
Gas pipelines indoors
AT this case, in addition to special external paints, it is allowed to use interior paint. But it is worth considering one of the main rules that vapor-permeable coatings cannot be used, since the purpose of painting pipes is to maximize the isolation of steel pipes from vapors and oxygen compounds.
Paints with high level fire resistance
These are coatings that, in the process of heating, begin to bubble and turn into a carbon foam-like state. This foam has good properties thermal insulation and is capable of being refractory for a long period of time. For example, fire-resistant colorants for metal products can protect metal structure for at least an hour.
Technological features of staining
Many people think about whether it is possible to paint the gas system on their own? Wouldn't it be difficult?
The staining steps, in general, do not differ from the staining procedure of any metal pipe, but with one caveat: in the process of cleaning from the old layer of paint, it is forbidden to use.
1. A piece of the product must be wrapped in a rag, after soaking it with a wash. After 20 minutes, use a spatula to remove the softened paint.
3. Apply a degreaser over the pipes. For these purposes, gasoline or solvent is suitable.
4. Apply colorants in two layers, be sure to dry before the layers. The time interval between cleaning and painting should be about six hours, since the humidity of the air will quickly contribute to rusting steel products. For these purposes, use an ordinary brush.
conclusions
Knowing all the listed nuances of painting gas pipelines, it is possible to successfully ensure their long-term coverage.
Gas pipes are designed to transfer gas under different pressures and over different distances. Such communications can be laid both underground and on the surface. In any case, they need special labeling. The gas is flammable and explosive, so the gas pipeline poses a great potential hazard. Painting of gas pipes on the street is carried out in accordance with the relevant requirements of GOST.
Rules for painting on the street and inside the apartment
GOST 14202-69 defines exactly what color and with what identification marks a pipeline for any purpose should be painted. Thus, both the team that arrived for the repair and the people living nearby can immediately determine which communications have been damaged and what danger they pose.
Gas pipes are designed to transfer different gases and marked accordingly:
- the natural gas pipeline is painted yellow without additional rings;
- acetylene transfer pipes are painted white;
- products for oxygen supply are blue;
- compressed air indicated in deep blue;
- transfer of carbon dioxide is indicated in orange.
Painting a gas pipe running along the facade of a building and on the street is rarely done along its entire length. Firstly, the highways are too long, and, secondly, multi-colored segments spoil appearance facade. Usually dyed separate sections to define the system.
Identification staining is used in certain areas: at the junctions during branching. Painting gas pipes on the facade of the house, passing through the wall, must necessarily include an appropriate color marker. Staining of a pipe passing through the wall.
Inside a building or dwelling, gas pipes are painted in accordance with the requirements of the interior. Usually base color running meters pipeline white. The gas pipe passing through the wall is not specially marked. Painting services are provided by the builders themselves.
Paint selection
Paint for painting gas pipes in the house or on the street is also selected in accordance with certain requirements.
Its main goal is to prevent corrosion of metal gas pipelines, however, there are differences between compositions for indoor and outdoor use.
What and how to paint a gas pipe? In this article, we have to decide what colors are acceptable to use, what types of paints should be preferred and how to apply them correctly.
Why is it needed
Painting a gas pipe is not at all a tribute to aesthetics.
It has two goals:
- pipeline color identification in the conditions of industrial enterprises, gas boilers, etc. Agree, it is much easier to determine the functionality of a pipe by color than to lift the documentation to the interchange in front of you.
Important: as we will see below, color marking is used only in industrial conditions or on the ground, when laying aboveground gas pipelines. Any requirements of local authorities regarding the color of the pipe on the facade of a residential building or inside its premises are not eligible.
- Anti-corrosion protection. Since the environment inside the pipe is devoid of oxygen and water vapor, its service life depends solely on the corrosion resistance of the outer coating.
Color
So, what color should the gas pipes be?
The source of information for us will be the safety rules for gas distribution systems PB 12-529-03, where paragraph 2.3.9 unambiguously states:
- Aboveground gas pipelines are painted with two layers of yellow varnish, enamel or paint. The coating must be designed for outdoor use. Color coding pursues identification purposes.
- External gas pipes passing along the surface of the facade of the building can be painted to match the color of the building envelope.
Painting gas pipelines inside apartments and private houses in terms of color choice is not regulated at all.
At home - any colors and shades.
Looking for a host
Who should paint the gas pipe? The question of this constantly pops up in the most different regions countries - from quiet courtyards on the outskirts of the capital to small villages in the wilderness. Alas, the person responsible for the condition of the gas pipeline each time has to be looked for separately: everything is determined by the terms of the contract for Maintenance gas pipeline.
In general, the areas of responsibility are distributed as follows.
apartment buildings
The internal gas pipelines of the apartments are painted by the residents. Pipes passing along the facade, entrance or street - by the gas supplier or utilities (again, depending on the terms of the service contract). The boundary of the division of areas of responsibility is the wall of the apartment.
Attention: this is only for painting. Service stop valves performed only and exclusively by the gas service.
Private sector
Gas pipeline in the territories common use serviced by gas workers, on the territory of private property - by their owner. Gas pipelines passing through private properties can also be serviced by a gas supplying organization; however, in this case, it would be quite reasonable for her to bill for their periodic painting ().
Private area- area of responsibility of the owner of the site.
Types of paint
What can be paint for a gas pipe?
Outdoor gas pipelines
In short, absolutely any anti-corrosion coatings for outdoor use are suitable for our purposes.
- Alkyd enamels (PF-115) are time-tested classics. It forms a thin, durable coating that is resistant to any weather conditions. The service life is at least five years, the price of a kilogram of paint is 40-60 rubles.
- Polyurethane paints are distinguished by excellent adhesion to any substrate, elasticity and even greater durability: in the most difficult conditions, they serve for at least 10-12 years.
- Two-component epoxy coatings are less flexible, but extremely wear resistant.
- Dispersions of aluminum or zinc powder in an organic lacquer are probably the most reliable corrosion protection. Thus, Zinga electrically conductive paint, after drying, creates a thin layer on the surface of the pipe. zinc film, which increases the service life of black steel up to several decades.
In the photo - silver, a dispersion of aluminum powder in an organic varnish.
Internal gas pipelines
Here, in addition to exterior paints, interior paints can be used. The only limitation is that you should not use coatings that are positioned as vapor-permeable: the purpose of painting is to isolate the surface as much as possible steel pipe from water vapor and oxygen.
The list of binders used in outdoor paints is also relevant here. Separately, I would like to present a class of coatings that is directly related to the safety of use gas equipment- . What it is?
This is the name of coatings that swell when heated and turn into carbon foam, which has excellent thermal insulation qualities and is capable of for a long time resist the flame. So, fire-retardant paints for metal Polistil can protect a metal base for at least 45 minutes.
Painting technology
Is it difficult to paint a gas pipe with your own hands?
Painting instructions are no different from the actual for any other metal product- with one caveat: when cleaning the old coating, you can not use heat.
- The pipe section is wrapped in a wash-soaked rag. After 10-15 minutes softened paint.
- Then the pipe is cleaned with a metal brush. The goal is to remove leftovers old paint and rust.
- The surface is degreased. The easiest way to do this work is with a rag soaked in solvent or gasoline.
- Paint or varnish is applied in two layers with intermediate drying. No more than six hours should elapse between cleaning the corroded surface and painting: atmospheric moisture will very quickly cause the steel to become covered with a layer of new rust. The tool is a regular brush.
Conclusion
The video in this article, as usual, will delight the reader with an abundance additional information on the topic we are discussing. Good luck!
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