Norms for the distance from the gas meter to other devices: features of the location of gas flow meters

Selection rules

When choosing a meter, pay attention to the throughput and connection method

The purchase of the meter should be coordinated with the management company. If for any parameters it does not meet the technical conditions, the connection will be refused.

For a correct decision, the following criteria should be taken into account:

• throughput. In terms of m³ / h, products are divided into models 2.5, 4, 6, 8 and 16. As initial data, you can take a flow rate of 1.5 m³ / h for a stove and 2.5-4 m³ / h for a double-circuit boiler.
• Place of installation. If it is planned to put the device on the street, it must be equipped with a thermal compensator that ensures operation in severe frosts and at high temperatures.
• Thread size. If necessary, conical adapters are purchased to combine pipes with a device that has process holes of a larger diameter.
• Connection option. Various models of controllers are installed in vertical or horizontal orientation with bottom, top or side entry.

The average gas pressure in the gas pipeline is how much

To study the mode of operation of gas pipelines, gas pressure measurements are carried out at least twice a year, during the period of the highest flow rate (in winter) and the lowest one (in summer). Based on the results of measurements, maps of pressures in gas networks are compiled. These maps determine those areas where there is the greatest pressure drop of the gas.

On the way to the city, gas distribution stations (GDS) are being built, from which gas, after measuring its quantity and reducing pressure, is supplied to the distribution networks of the city. The gas distribution station is the final section of the main gas pipeline and is, as it were, the border between the city and main gas pipelines.

During a technical inspection, they monitor the oil level in the gear boxes, gearbox and counting mechanism, measure the pressure drop at the meters, and check for tight connections of the meters. Meters are installed on vertical sections of gas pipelines so that the gas flow is directed through the meter from top to bottom.

The gas enters the reception point at a pressure of 0.15-0.35 MPa. Here, first, its quantity is measured, and then it is sent to receiving separators, where mechanical impurities (sand, dust, corrosion products of gas pipelines) and condensed moisture are separated from the gas. Next, the gas enters the gas purification unit 2, where it is separated from hydrogen sulfide and carbon dioxide.

To check the operation of gas pipelines and identify areas with the highest pressure drop, gas pressure measurements are carried out.For measurements, gas control points, condensate-state collectors, inputs to houses or directly gas appliances are used. On average, one measuring point is chosen for every 500 m of the gas pipeline. All works according to pressure measurements gas is carefully planned and carried out according to special instructions, which are approved by the chief engineer of the trust or office.

On fig. 125 shows a gas supply scheme for a large industrial enterprise. Gas from the high-pressure gas pipeline through a shut-off device / in the well is supplied to the central gas control point of the GRP 2. Gas flow is measured and reduced in it. In this case, high-pressure gas is supplied to shops No. 1 and 2, medium-pressure gas to shops No. 3 and 4 and the boiler room, and low pressure gas to the canteen (through the GRU). With a larger number of workshops and their considerable remoteness from the central hydraulic fracturing station, cabinet GRU 7 can be mounted in the workshops, ensuring the stability of gas pressure in front of the burners of the units. At high gas consumption in the shops, gas consumption metering units can be installed to control the rational and economical gas combustion.

To select part of the main gas and transfer it through the outlet gas pipelines under the necessary pressure to intermediate consumers, gas distribution stations (GDS) are built. Pressure regulators (spring or lever action), dust collectors, condensate collectors, installations for gas odorization (i.e., giving it an odor) and measuring the amount of gas supplied to the consumer, shutoff valves, connecting pipelines and fittings are installed on the GDS. The mass of piping and fittings for GDS with a capacity of 250-500 thousand m per hour reaches approximately 20-40 tons.

Consumption of natural gas at home

The owners of all apartments and houses, many enterprises need to calculate the volumes of gas consumed. Data on the need for fuel resources are included in the projects of individual houses and their parts. To pay according to real numbers, gas meters are used.

The level of consumption depends on the equipment, thermal insulation of the building, season. In apartments without centralized heating and hot water supply, the load goes to the water heater. The device consumes up to 3-8 times more gas than a stove.

Gas water heaters (boilers, boilers) are wall-mounted and floor-standing: they are used simultaneously for heating and for heating water, and less functional models are mainly for heating only

The maximum consumption of the stove depends on the number of burners and the power of each of them:

• reduced - less than 0.6 kW;
• normal - about 1.7 kW;
• increased - more than 2.6 kW.

According to another classification, low power for burners corresponds to 0.21-1.05 kW, normal - 1.05-2.09, increased - 2.09-3.14, and high - more than 3.14 kW.

A typical modern stove uses at least 40 liters of gas per hour when turned on. Typically, the stove consumes about 4 m³ per month per 1 tenant, and the consumer will see approximately the same figure if he uses the meter. Compressed gas in cylinders in terms of volume requires much less. For a family of 3, a 50-liter container will last about 3 months.

In an apartment with a stove for 4 burners and without a water heater, you can put a counter marking G1.6. A device with a size G2.5 is used if there is also a boiler.To measure the gas flow, large gas meters are also installed, on G4, G6, G10 and G16. The meter with parameter G4 will cope with the calculation of the gas consumption of 2 stoves.

Water heaters are 1- and 2-circuit. For a boiler with 2 branches and a powerful gas stove, it makes sense to install 2 counters. One of the reasons is that household gas meters do not cope well with the large difference between the power of the equipment. A weak stove at minimum speed uses many times less fuel than a water heater at maximum.

The classic stove has 1 large burner, 2 medium and 1 small, using the largest one is the most cost-effective

Subscribers without meters pay for volume based on consumption per inhabitant multiplied by their number and consumption per 1 m² multiplied by the heated area. The standards are valid all year round - they laid the average figure for different periods.

Norm for 1 person:

1. Gas consumption for cooking and heating water using a stove in the presence of centralized hot water supply (DHW) and central heating is about 10 m³ / month per person.
2. The use of only one stove without a boiler, centralized hot water supply and heating - approximately 11 m³ / month per person.
3. The use of a stove and a water heater without centralized heating and hot water is about 23 m³/month per person.
4. Heating water with a water heater - about 13 m³ / month per person.

In different regions, the exact consumption parameters do not match. Individual heating with a water heater costs about 7 m³/m² for heated living spaces and about 26 m³/m² for technical ones.

On the notice from the meter installation company, you can see how much the consumption figures differ with and without a gas meter

The dependence in gas consumption was indicated in SNiP 2.04.08-87. Proportions and indicators are different there:

• stove, central hot water supply - 660 thousand kcal per person per year;
• there is a stove, no hot water supply - 1100 thousand kcal per person per year;
• there is a stove, a water heater and no hot water supply - 1900 thousand kcal per person per year.

Consumption according to the standards is affected by the area, the number of residents, the level of well-being with household communications, the presence of livestock and its livestock.

The parameters are differentiated based on the year of construction (before 1985 and after), the involvement of energy-saving measures, including the insulation of facades and other external walls.

You can read more about the norms of gas consumption per person in this material.

Varieties of gas meters and their characteristics

Gas meters are special devices designed to record the consumption of natural or liquefied gas. The types of such devices are presented in the table.

The main characteristic of gas meters is their throughput. This indicator allows you to determine how much of the resource can pass through the counter within a certain time. This number is indicated in the marking of the device.

For example: if G4 is written on the meter, this means that its throughput is 4 m3 / h. The installation of the device must be carried out in the system within which the total demand for "blue fuel" of all household devices located there does not exceed the indicated indicator.

Another important feature of each device is the total duration of its operational period.The average service life is 20 years or more. The countdown is not from the moment the meter is installed, but from the date of manufacture at the factory.

What to do if the device is broken

Any mechanical device can fail over time. This fate also does not bypass gas meters.

Breakdowns can be different depending on the type of accounting device:

• if we talk about electronic means of accounting for gas consumption, the digital values ​​\u200b\u200bare not reflected on the screen, or they are viewed, but only in fragments;
• for other types - the meter can freeze in place (this is noticeable visually), or there is a slight gas leak at the meter's attachment points.

If, however, any malfunctions are observed in the operation of the device, they can be removed in several ways.. Regardless of when the specialist discovered a violation of the sealing of the accounting tool, when the owner of the apartment calls him or during the next professional examination, an act is drawn up.

In it, the representative of the organization points out the revealed fact of the violation. When this happens, the owner of the equipment will be required by law to pay the company for the consumed resource, but according to the standards, this is an order of magnitude higher than payment according to indications.

Payment is charged for the last six months of using the resource. By analogy with this technique, the resource consumption is calculated, where there is no metering device.

Please note! When the seal remained intact, however, during a scheduled inspection, the gasman discovered that the meter was faulty, you will also have to pay for gas according to the standard for the last 6 months.

It is believed that if the consumer did not report an obvious breakdown, he deliberately withheld the fact of incorrect recording of resource consumption.

A message about the recalculation of the amount in connection with the violation will come to the consumer within 30 days. The company is obliged to notify about the recalculation and calculate the amount payable.

If a malfunction of the device is detected by the owner of the housing, and this is reported to the service company, the specialist arrives at the place, determines that the seal is in place, and fixes the fact of the malfunction.

Here, the calculation of consumption, based on the approved standards, will be made only from the moment a malfunction is detected and until the installation of another serviceable device.

Replacing a defective instrument

Gas meters are rare, but break. This happens due to a violation of the operating conditions. For example, if you use a model with a lower capacity than the real one, use the device without a dust filter, or use it in high humidity. Faults can be different:

• the device stops recording the gas flow, works intermittently or freezes in place;
• on electronic counters, the numbers on the screen completely or partially disappear;
• there is a slight gas leak at the point where the instrument is connected to the pipe.

Such products are subject to replacement, regardless of the period of operation of the gas meter set by the manufacturer. Such products are subject to replacement, regardless of the period of operation of the gas meter set by the manufacturer.

If the owner detects a problem, he must immediately notify the service organization about the malfunction. Any breakdown is eliminated only by the gas service; it is forbidden to disassemble the device on your own.The called master will inspect the device, fix the fact of the malfunction and take it for inspection. Gas consumption will be calculated according to standard values ​​from the moment a problem is discovered until the installation of new equipment.

Much more serious consequences are the detection of a breakdown by the master during a routine inspection of the meter. In this case, the gas service may decide that the owner deliberately did not report an obvious malfunction and hid the fact of incorrect recording of gas consumption, and he will have to pay for the energy resource according to the standard for the last six months. Therefore, we recommend that you regularly check the equipment for possible malfunctions and, if any, contact for a gas meter replacement.

Broken filling

It is forbidden to remove the seal from the counter yourself. If it is accidentally damaged, for example, during cleaning, it is better to immediately notify the service organization. The masters of the company will arrive in the near future and solve the problem on the spot.

Otherwise, the fact of violation will be detected during a scheduled inspection, which is fraught with suspicion on the part of the service in the mechanical rewinding of the counting mechanism. In such situations, the device is immediately removed and sent for examination, about which an appropriate act is drawn up. All costs for dismantling and checking the device are borne by the homeowner. In addition, the owner may be held administratively liable and receive a considerable fine for damaging the seal. If, according to the results of the examination, the device is found unsuitable for further operation, you will have to purchase a new meter.

How to replace a meter

After the expiration of the life of the meter or confirmation of the fact of its breakdown, the device is replaced with a new one.The device itself is pre-purchased. It is advisable to install a meter similar to the previous one, or a similar model from the same manufacturer. If such a device is not available on the market, we recommend that you contact the gas service for the selection of new equipment. Before installation, the product is pre-checked for serviceability.

If it is necessary to replace the meter, it is required to notify the gas supply organization in advance, which will send the controller to take readings from the old device and check the integrity of its seals.

Installation of a new device is carried out by an organization with which the owner has a contract. If this requires welding work, they are also carried out by employees of the company and paid by the owner. Upon completion of the installation, the equipment is sealed immediately or within 5 working days.

The purchase of a new meter and installation services are the responsibility of the owner of the house. Free replacement is possible only for the poor, large families and veterans of the Second World War.

Everything according to the law

It must be remembered that there is a certain standard that determines the actions of a person who wants to install a meter. Since no one needs problems with the law, you need to follow all the rules that are provided for in it. You should notify the energy supply point of your desire, so the first step in the procedure is to submit an application to the Gorgaz PES.
The following documents must be submitted along with the application:

• passport for the apartment (photocopy);
• certificate stating that there is no debt.

Installing a meter is a responsible matter, so you need an appropriate project and coordination with the necessary authorities. All this is achieved just by submitting documents.

After the project is created and approved, you can proceed to the installation itself. Who is doing this?

Refusal to replace the gas meter

Replacement and gas meter installation is voluntary for each owner. Payment for gas upon consumption is always less than the average tariffs set by the management company.

Many owners of private houses and apartments receive notifications that an inspection and replacement of the device is required, and they are eager to apply as soon as possible.

However, this should not be done for several reasons:

• perhaps the notice was sent not by the organization serving the house, but by a third-party company that is not related to the control of gas equipment, but simply seeks to sell its services;
• the time for checking or replacing the device has not yet come. To establish the exact date of the gas meter warranty period, it is necessary to check the certificate and the date of manufacture of the device;
• the owner does not need to replace the meter and wants to refuse it.

The latter option sometimes also arises, despite the fact that it is cheaper to pay for gas with a meter. As a rule, such cases arise if the deadlines have come, but the owner is selling his home and does not want to spend money on replacing equipment.

Sealing of modern gas metering devices occurs with the help of special plastic blanks and does not take much time

It is also worth refusing to replace if the apartment is transferred from the category “with gas service” to the tariff “with stationary electric stoves”.Usually, such transitions are made in apartments of the "Khrushchev" type, when the gas supply to the apartment is completely stopped and additional power for electric stoves is installed.

The owner needs to know that neither the management company, nor the HOA, nor any other organization can force him to install gas meter in your apartment.

How to choose a gas meter

Before you buy a gas meter, you need to clarify several parameters. They will help you choose the right device for the needs of the user.

1. The number of consumers in the house and the total fuel consumption.
2. Ambient temperature at which the meter can operate.
3. Thread diameter at the outputs of the controller (counter).
4. The connection side of the device.
5. Its service life.
6. The distance between the centers of the outlets of the gas controller.

Now let's take a look at what it means and why you need it.

1. Each meter has a marking of the form: G-x or G-x, y (instead of letters, the numbers on the controllers indicate the minimum amount of gas that they are able to pass through themselves). For example, a gas water heater (flow rate 1 m3/h) and a stove (1.5 m3/h) are installed in the apartment. Their total fuel consumption is about 2.5 cubic meters / h, which means that a controller with an index of G-2.5 is suitable.
2. Account controllers are installed in apartments and private houses. In the second case, this is done on the street, where in winter the temperature can drop to -30. In such conditions, only devices with a temperature compensator can work.
3. Gas pipes in apartments are 1/2 inch, in houses it can be the same or 3/4. Rarely, but there are also inch pipes.
4. The devices are available with left-hand and right-hand gas supply.Which one will be needed depends on the position of all gas consumers relative to the installation site of the meter.

An important indicator! After the service life expires, the device will have to be replaced. The main thing to remember is that the service life begins from the moment the device is released. It is listed in the passport.

How to avoid problems?

First of all, following the rules is your health and safety for your life.

Therefore, if you combine gas and electric, use a few simple guidelines:

1. Follow the rules of the PUE and SP exactly.
2. At the entrance to your apartment, install a residual current device that guarantees a power outage in case of problems with the neutral wire.
3. Before wiring, make sure that the new wiring will match the old wiring diagram (if it does not change).
4. A gas stove cannot be grounded through a gas pipeline, as well as ordinary household items that run on electricity.

And besides, be sure to use the services of experienced electricians and conclude contracts when installing electricians for gas appliances.

Always check the license and documents of the gas workers whom you call for the installation of gas-using equipment. In addition, be sure to conclude a bilateral agreement and check that the installation of electricians to the devices is carried out in accordance with all the rules.

All of these recommendations will help you avoid problems with regulatory authorities and ensure a secure energy supply.