Water metering unit behind the first wall. Accounting for HVS. Water metering unit. Submission to the room. Features of installation of metering stations for cold and hot water

People are often interested in what an input node (in an apartment) is, what it should be and what should be included in it.

Having received the keys to your new apartment (in a new building), you may notice that the input node is most likely to be made poorly - the input node is made of poor quality material and equipment. The developer does not set as his goal to make an ideal input site, but is limited to a minimum for the completion of the object.

The composition of the water supply input node in the apartment

The normal input node includes:

• Shutoff valves;
• Leakage protection system;
• Coarse filter;
• Water meter;
• Check valve;
• Fine filter;
• Pressure reducer;
• In exceptional cases (with poor water quality), you can put a main water filter;
• Distribution manifold;
• Shock Absorber

Shutoff valves in the apartment

The first thing to start with is the replacement of valves in the apartment. Often, the developer uses the cheapest options for reinforcement. It should also be noted that due to low-skilled labor, there are cases that stop valves may not be installed correctly. For example, any ball valve consists of two parts and a large part must be wound onto the riser, which contains the shut-off ball itself. This will allow even in case of leakage of the stopcock itself to shut off the water supply, otherwise you will not be able to shut off the water and flood the neighbors.

Our company recommends installing stop valves from manufacturers such as Bugatti and Oventrop. Even the best shut-off valves periodically need a preventive opening / closing of the crane - this avoids the "souring" of the movable mechanism of the crane.

Leakage protection system

Even the most reliable and modern water supply system includes connections with gaskets and flexible eyeliner. According to statistics from insurance companies, it is these elements that are the main causes of leaks in the apartment.

In order to protect yourself, you need to install a leakage protection system. The system consists of a ball valve with a servo drive, a control module and sensors. When water enters the sensor, the system gives a command to close the tap.

It is important to consider that the leakage protection system must be installed immediately after the stopcock - this will help minimize the number of unprotected connections.

There are a large number of protection systems on the market, but our company recommends installing the Aquastorozh system. She has established herself well, and the manufacturer company provides good, timely service.

Coarse filter

Often the quality of the water may not be of the best quality - large particles of dirt can come into the water, which can damage other devices in the water supply system. For example, some manufacturers of water meters will void their warranty if this filter is not installed in front of the meter. Depending on the manufacturer, coarse filters are available with a mesh cell of 600, 500, 300 microns.

Water meters

An integral part of the input node in the apartment is a water meter. The types of water metering devices and methods of their operation are described in detail in our other articles, therefore, we will not deeply consider this item.

It should be noted that in Moscow only water meters with a pulse output and an installation length of 80 mm are allowed for installation. We recommend the use of ITELMA water meters.

Check valve

A necessary element of the metering unit is a check valve, which serves to protect against reverse water flow in the water supply system. This prevents the mixing of hot and cold riser water (often they have different pressures). It also prevents the water meter from “twisting” when draining water from the riser, so many management companies may not accept a water metering unit without a check valve.

Fine filter

Main water filters

Shock Absorber

The shock compensator allows you to “quench” sudden pressure surges when quickly opening and closing the mixer, turning off / on washing and dishwashers, toilet flush valves.

According to statistics from insurance companies, most of the flooding of apartments occurs at night. This is due to the fact that with a small intake of water from the riser, the water in the pipes is heated to room temperature, it expands and the pressure in the water supply system rises. This can be prevented by a shock absorber.

The shock absorber is usually installed in the end of the collector. They are membrane and spring type.

Correct installation of the input node will save you from unnecessary costs and problems. Installation of the input unit is not an easy task and it is better to entrust this work to qualified specialists. Our company "Plumber Stepanych" employs experienced and qualified professionals.

Our design company has developed a water treatment facility for the water metering unit.

TECHNICAL REQUIREMENTS FOR DESIGNING AN ACCOUNTING UNIT

for equipment of a water metering unit

1. General project requirements

1.1. The accounting unit must meet the requirements of:

Federal Law “On Energy Saving and on Improving Energy Efficiency and on Amending Certain Legislative Acts of the Russian Federation” dated November 23, 2009 N 261-ФЗ;

Federal Law "On Water Supply and Sanitation" dated 07.12.2011 N 416-ФЗ;

- “The rules of cold water supply and sanitation”;

- “Rules for the Organization of Commercial Accounting for Water, Wastewater”;

- “The Rules for the use of public water supply and sanitation in the Russian Federation”.

2. Requirements for the design documentation of the water metering unit

2.1. The project for the arrangement of the metering station (installation, replacement of the meter) of cold water, as well as their equipment, is developed by a person who has special permission to perform these works.

2.2. Metering units, which include mechanical metering devices, can be implemented in accordance with the drawings of the albums of typical designs of water meter assemblies, without developing projects. The design of the water meter assembly is determined individually by the Technical Conditions.

2.3. The design of the water metering unit, which includes a flow meter - the meter should contain:

2.3.1 Explanatory Note:

Appointment;

Initial data: object operation mode, number of inputs, range of measured expenses, operating conditions of the device;

Justification of the choice of measuring instruments;

Technical characteristics of the equipment, including a comparative table of the technical characteristics of the device in accordance with the instruction manual and the actual parameters of the measured water flow;

Calculation of the error of the device in the entire range of measured costs;

Description of the design and functional diagram of the metering unit;

The procedure for taking testimony (archives), reporting;

Maintenance schedule for metering unit.

2.3.2 Drawing documentation:

Situational plan with approval by Vodokanal of the location of the metering unit;

Functional automation schemes, including instrumentation and automation cabinets;

Wiring diagrams, with the obligatory indication on the diagram of straight sections before and after the meter, as well as the nearest local resistances before and after the flow meter - counter;

Electrical circuits (power, connections, external wiring);

Hardware Specification.

2.4. Accounting nodes are located on the border of the network balance sheet ownership or on the border of the operational responsibility of the subscriber and Vodokanal OJSC, unless otherwise provided by the water supply agreement, a single agreement on cold water supply and sanitation, and an agreement on connection (technological connection) to centralized cold water supply systems.
2.5. The location of the equipment of the metering unit is determined by the project. The place of equipment of the metering unit should ensure that the water consumed at the facility is fully accounted for (as a rule, installed at the entrance to the building).

2.6. For all metering stations, it is allowed to use components from materials approved for contact with drinking water.

2.7. Prior to the installation of the assembly, the technical and design documentation must be agreed with the services of Vodokanal OJSC.

3. Requirements for the equipment of the metering station

3.1. Provide as part of the metering unit:

Water meter with pulse flow sensor;

Filter according to the diameter of the supply pipe;

Three pressure gauges (before the filter, after the filter, after the water meter);

Drain valve after the water meter (outside the direct section);

Water sampling tap;

Flow recorder for remote reading and monitoring of meter operation.

3.2. All connections to water fittings are allowed only after the water meter assembly.

3.3. Acceptance of the metering unit into operation is carried out with the participation of representatives of Vodokanal OJSC with the preparation of the relevant act.

4. Requirements for metering devices

4.1. Metering devices that are approved for the approved types of measuring instruments approved for use in the Russian Federation are allowed to be installed.

4.2. The meter should have a marking containing the name, manufacturer’s trademark, metrological class, nominal flow rate in m3 / hour, year of manufacture, serial number.

4.3. The meter at the time of installation must be verified and sealed by an organization that has the appropriate permission.

4.4. The meter should be used within the validation period indicated in the original passport of the meter and on the verification mark of the seal installed on the meter body. Installation and operation of metering devices that do not have a seal, or if the seal is damaged, is not allowed.

4.5. The meter should be mounted in a place readily accessible for taking readings (without using a mirror or stairs), installation, maintenance.

4.6. The meter is mounted in accordance with the installation requirements (according to the passport of the meter).

4.7. The design of the meter should exclude unauthorized interference in its operation without dismantling the equipment. To exclude the influence of an external magnetic field, metering devices should have antimagnetic protection of the counting mechanism.

4.8. The limits of permissible relative error of water meters should not exceed:

± 5% in the flow range from Qmin to Qt (excluding);

± 2% in the flow range from Qt to Qmax (including).

(Qmin - minimum water flow rate, m3 / h; Qt - transitional water flow rate, m3 / h; Qmax - maximum water flow rate, m3 / h)

4.9. The meter must have a flow recorder that measures the parameters of the flow meter, a leading electronic archive of values \u200b\u200babout hourly, daily, monthly expenses of the consumed resource.
4.10. The flow recorder must have:

Ability to remotely transfer data (via cellular communications GPRS; GSM / Ethernet);

Ability to divide interfaces for parallel dispatching;

Protection against intentional measurement of archival data and metrological parameters;

The built-in control unit of the transmitting device, which allows initializing the modem and maintaining the communication channel with the data collection center of the resource supplying organization;

The ability to display on the screen a secondary flow converter in m3 / h, volume in m3, the presence of abnormal situations and failures, including operating hours;

The presence of protection against unauthorized interference in the operation of the flow meter;

Degree of protection according to GOST 14254-96 "Degrees of protection provided by shells (IP code)". IP 65 for indoor installation, IP 68 for installation in flooded chambers / wells, underground;

Ability to create archives (hourly depths of at least 1,450 hours, daily depths of at least 730 days, monthly depths of at least 48 months) of indications and emergency situations or operating hours (it is allowed to use certified archivers complete with a meter);

The ability to transmit current, archival readings of the flow rate and amount of water and messages about emergencies through the device for collecting and transmitting data;

Availability of output signals for communication with external devices - digital output RS 232 or RS 485 (ModBus RTU and / or M-Bus protocols).

5. Requirements for the operation of the metering unit

5.1. Acceptance of the metering unit into operation is carried out with the participation of representatives of Vodokanal OJSC with the preparation of the relevant act. The operating conditions of drinking water metering stations must correspond to the operating conditions of the metering device, which is part of the node. The operating conditions of the meter are indicated in its technical documentation.

5.2. Admission to operation of metering devices is carried out according to the results of a survey of the metering station by representatives of Vodokanal OJSC for compliance with technical specifications (including their annexes) and sealing of metering devices, which is an act to be signed by representatives of Vodokanal OJSC and the Subscriber. In the presence of connecting devices (bends, control and drain valves) in the pipeline section to the metering device, their locking devices must be sealed in closed condition by representatives of Vodokanal OJSC.

5.3. When operating metering devices, do not allow:

expiration of the inter-verification periods of operation of metering devices installed in the passport documentation for metering devices;

Failure of seals installed on metering devices.

6. Requirements for the location of the metering station

6.1. The water meter should be installed in a room with artificial lighting with an air temperature not lower than + 5 ° С and not higher than + 50 ° С. The room must be protected from moisture. If the meter is installed in the well, the well must be protected from flooding. If necessary, provide for the repair of the room (well) and waterproofing.

• The metering unit should be installed in a place protected from unauthorized entry and providing employees of Vodokanal OJSC with year-round access (to monitor the functioning, operation, maintenance and reading of metering devices).
• The installation location of metering devices should guarantee its operation without possible mechanical damage. It is not allowed to install metering devices at a close distance from devices that create a powerful magnetic field around themselves. Grounding equipment is needed around the perimeter of the room.

Additional requirements for the accounting node

1. A power supply must be provided to the meter.
2. A non-return valve should be installed between the water meter and the second valve with the movement of water.
3. The condition of the gate valves at the entrance to the building, inside the metering unit should provide protection against water ingress and the possibility of stopping water supply for the purpose of installing the metering device and removing it. If necessary, provide for the replacement of valves.
4. The system of pipelines for cold and hot water supply in the metering unit should provide protection against possible leaks and gusts for the entire period of operation until the next period of calibration of metering devices, if necessary, provide for the replacement of pipelines.
5. In the cases specified in SNiP 2.04.01-85, provide for the equipment of the bypass pipelines. Install shut-off and control valves with electric drive on the bypass pipelines. Opening of shut-off and control valves should be carried out automatically from the fire extinguishing device. If there is a shut-off and control valve in the metering unit on the bypass line, provide for the possibility of sealing it.
1. Recommendations

The Pulsar measuring automated energy control and metering system (IASKUE) is designed for automated commercial and technological metering of the consumption of cold and hot water, gas, electricity, and thermal energy.

Services for the installation of turnkey technical metering centers in apartment buildings, factories, shopping centers, MKD, HOA.

Find out the UU installation option

Sign up for a free survey by an engineer!

We install heating meters, hot water, cold water. Meters are installed in apartment buildings, kindergartens, schools, industrial enterprises, heat supply companies, boiler houses. Any consumer or source of energy for central heating, central water supply. Accounting units are installed to control utilities in the housing and communal services. The main customers for the installation of common metering devices are MKD, HOA, other consumers of central heating.

Installation of accounting nodes on an all-inclusive system. Request for necessary documents in the Republic of North Ossetia, development and project approval, installation and installation of metering stations for thermal energy (UUTE), commissioning, commissioning, commercial registration in a resource-supplying organization, warranty and service maintenance of metering devices.

Order calculation of your accounting node!

Send TU or photo of the control unit.

Types of metering nodes

Heating
Heat calculator - 1 pc. Flowmeter - 2 pcs. Temperature sensors - 2 pcs. Pressure sensors - 2 pcs.
Hot water There is a caveat: If hot water is dead-end, then only one module of the metering unit is installed, this significantly reduces the cost of the DHW heat meter.
Heat calculator - 1 pc. Flow meter - 1 pc. Temperature sensors - 1 pc. Pressure sensors - 1 pc.
Cold water
Calculator - 1 pc. Counter - 1 pc. GSM / GPRS - modem - 1 pc.

Heating - Installation of common house, collective heat metering devices.

Of course, it is advantageous to set a heat consumption meter, since the monthly amount for heating will be calculated at the current rates and based on the readings recorded by the collective metering device. Otherwise, the calculation is made according to the norm with the use of a raising coefficient. In addition, residents of an apartment building have the opportunity to regulate the consumption of thermal energy in an individual mode using the system automatic regulation.

The composition of the heat meter:

Heat calculator - 1 pc.

Flowmeter - 2 pcs.

Temperature sensors - 2 pcs.

Pressure sensors - 2 pcs.

Hot water - Installation of common house, collective metering devices for domestic hot water.

What is the difference between the hot water metering unit and the heat metering unit for heating? Fundamentally, this is one and the same thing. Both metering stations include a heat meter with associated electronics, flow meters, temperature sensors, pressure sensors. However, such a metering unit is usually cheaper, because it is possible to use a flowmeter on the return pipe (circulation) of a smaller diameter, or if the resource supplying organization agrees, use mechanical water flow meters with a pulse output. In certain cases, such a project may be agreed with the RNO.

There is a caveat: If hot water is dead-end, then only one module of the metering unit is installed, this significantly reduces the cost of the DHW heat meter.

The composition of the metering station for dead-end DHW:

Heat calculator - 1 pc.

Flow meter - 1 pc.

Temperature sensors - 1 pc.

Pressure sensors - 1 pc.

Cold water - Installation of common house, collective metering devices for cold water.

Devices that are part of the water metering unit can be of various quality and modifications.

1. The usual pinwheel, the vane flowmeter with which the readings are taken in the basement, is the VSHN dry-flow turbine cold water meter, designed to measure the volume of cold water according to SNiP 41-02-2003 and drinking water according to SanPiN 2.1.4.1074-01 and SNiP 41-02-2003.
2. The same wing meter with a pulse output, which can be connected to the computer and through the dispatch system to see the readings on the computer.
3. Full bore flowmeters, flow converters induction microprocessor versions IPX5 according to GOST 14254-96, GOST R 52931-2008, more accurate and durable, less likely to clog, because do not have a movable mechanism in the flow part, less hydraulic resistance. - The best option for the HVS node.

Composition of the HVS accounting node + scheduling:

Calculator - 1 pc.

Counter - 1 pc.

GSM / GPRS - modem - 1 pc.

The procedure for installing accounting nodes.

Invite our engineer for an initial inspection of the installation site.

Survey to determine the cost - for free !!!

• we get the technical conditions for the installation of metering devices
• we develop the project and coordinate with the resource supplying organization
• weld ready-made modules of metering devices
• we install flow meters, temperature sensors, pressure sensors on the metering unit
• we connect metering nodes to the heat meter
• we program devices and carry out commissioning
• we will organize the admission of the metering unit into operation
• we bring the inspector to the object and give him the metering station
• the signed "Act of admission of the metering station into operation" we transmit to you
• from this moment metering devices were put into operation

Get a free bill via SMS

Warranty on the accounting unit - 2 years.

7 years to a legal entity, which means that the work will be completed on time, and the guarantee will be fulfilled.

SRO certificate for design work.

SRO certificate for installation work.

Approvals and certification of personnel.

Service Options:

• Training your employees on the operation of heat metering units
• Installation of service programs on your computer to control metering devices
• Network integration of several accounting nodes into one control room
• Re-registration of accounting nodes when changing ownership or balance holder

Our works:

Comparative cost of instrument sets

for heating metering unit:

1 Calculator + 2 flow meters + 2 DT + 2 DD

PRICE - more about the prices of devices and the cost of work.

Frequently asked questions about metering devices:

End of form

Frequently Asked Questions

1. How to install a heat meter?
2. Why is it necessary to put heat meters on hot water, and not an ordinary water meter?
3. How to get a subsidy for the installation of common metering devices?
4. Is it possible to install a heat meter in an apartment?

1. HOW TO INSTALL A HEAT METER?

• To begin with, at the general meeting of owners, it is necessary to decide on the installation of an accounting unit.

Since the installed accounting unit will become common property, its payment is distributed proportionally to all owners. It is necessary to find out about the existence of subsidies for the installation of metering devices and the possibility of participation in such programs.

• The choice of contractor.

Work should be performed only by legal entities specializing in this type of activity. The organization must have a SRO certificate for design work and a SRO certificate for construction work. Certification of welders and electricians is desirable.

Sometimes there are situations when the metering devices node is installed, money is paid for them, but the heat supplying organization does not allow the metering station to operate. As a rule, this is due to the fact that the mounted unit does not comply with design decisions, as the project is carried out by 3 persons “who did not see the object in the eye” - the dimensions in the project do not correspond to the actual sizes of the pipeline sections.

Specialized companies are currently installing turnkey heat meters with their further maintenance - this is the most profitable option for the customer. Such firms quickly receive all the necessary documents in the energy supplying organization, optimally build their work, starting from obtaining technical conditions and ending with the signing of an act of approval for operation. They themselves bring inspectors from the Republic of North Ossetia to the accounting unit.

It is necessary to find out for a long time whether the organization has come to this market, whether tomorrow will disappear. The organization’s presence of a website, office and production facilities, as well as qualified personnel indicates the serious intentions of this organization.

• Installation price.

The formation of the cost of installing a heat meter is based on an assessment of many factors. These factors include: the complexity of the work and the design itself, its configuration, the cost of metering devices. Calculation of the cost of the metering unit is made individually for each object on the basis of the estimated calculation. Only after a full examination and approval of the project is the total cost of installing the metering unit determined.

• Obtaining technical conditions in the heat supply organization.

Technical specifications (TU) for the installation of a heat meter are issued by the local energy supply organization. The technical specifications indicate the main parameters of the heat supply system and additional requirements to which the heat meter must comply. Based on these data, the project of the metering unit is carried out. Otherwise, it will not be possible to use indications from metering devices for commercial calculations. Specialized firms that install metering devices themselves receive technical conditions.

• Development and approval of the project.

The design of the metering unit should be carried out by an engineer who will subsequently oversee the work at this facility. Such an engineer has practical knowledge of metering devices, heat supply systems, which is necessary when coordinating the project and admitting the metering unit.

The organization must have an SRO permit for design work.

• Supply of equipment and acquisition of materials.

According to the project, all necessary plumbing, electrical equipment and heat meters of the right size and brand are purchased. Organizations specializing in the installation of metering devices, as a rule, purchase them from manufacturers without additional margins.

• Installation and commissioning.

Installation of the metering unit is carried out at any time of the year. When inserting a heat meter in the cold season, it is necessary to monitor the time the coolant is turned off to avoid freezing of the building.

After tapping the instruments, it is necessary to call an inspector from the heating network to check the operability of the heat meter and the compliance of the installation with the design documentation. Making sure that the inspector seals the devices, draws up an admission certificate for the metering station, which must be signed by the representative of the energy supply organization and the owner.

The organization must have an SRO permit for construction work.

• Heat meter maintenance.

After commissioning, it is advisable to put the metering unit into service, as it is technically sophisticated equipment that requires constant monitoring.

To install metering devices and their further maintenance, you can contact the company "ATK".

2. WHY DO YOU NEED TO INSTALL HEAT ENERGY METERING DEVICES ON HOT WATER, AND NOT A USUAL WATER METER?

Full accounting of hot water occurs not only in volume, but also in the amount of heat. Therefore, an ordinary water meter (“pinwheel”), such as is installed in our apartments in cold water, is not advisable, since it is necessary to record the temperature parameters of water to take into account Gcal. Therefore, it is necessary to mount a metering station for thermal energy on hot water (a set of devices that takes into account several parameters).

In some buildings, the hot water coming from the DHW does not reach the temperatures set by the norm. With the help of a heat meter, it is possible to see the actual consumption of heat and the volume of hot water, and accordingly pay only for what has been received in fact, and also require bringing the water temperature to normal.

3. HOW TO GET A SUBSIDY FOR INSTALLING GENERAL COMMON ACCOUNTING DEVICES?

The periodic state is developing programs to facilitate the installation of metering devices. Now you can use the money of the capital repair fund for the installation of accounting units.

4. CAN I INSTALL A HEAT METER IN THE APARTMENT?

Most of the residential buildings in Russia are buildings with vertical (riser) distribution of heat supply pipes. With this model of wiring, several heating risers can pass through the apartment with separate taps to a radiator or a group of radiators.

Due to the fact that the heat meter must be installed in each of these taps - this translates into a pretty penny. Converting to another heating system, where it will be possible to use only one heat meter, is very expensive, and, as a rule, it is impractical from an economic point of view, since the cost of the heat metering system and the payback period in this case will exceed all reasonable limits.

Installation of heat meters in a separate apartment is possible, but today, due to the high cost of heat meters, this is not profitable. Therefore, at present, it is better to pay for the consumed heat according to the testimony of a common house heat meter installed in the ITP, which is usually located in the basement of the building.

Or write a question to our specialists:

Payments for received water and waste water, according to the Ministry of Energy of Russia, are increasing every year. Therefore, for many enterprises, the task of organizing commercial metering of water and wastewater is becoming increasingly important.

In 2013, for organizations related to water supply, sanitation, water treatment and wastewater treatment, the Government of the Russian Federation determined the procedure for commercial accounting by approving the “Rules for the Organization of Commercial Accounting for Water, Wastewater”.

Organization of commercial water and wastewater metering

Commercial water metering involves the calculation of fees for transported water, which is received, or served under water supply agreements.

Commercial wastewater metering - it is the control of water that has been discharged or collected under contracts concluded with organizations working in the field of water supply or sanitation.

The organization of commercial water and wastewater metering in that part that is not regulated by the housing legislation of the Russian Federation is regulated by the "Rules for the organization of commercial water and wastewater metering" approved by the Government of the Russian Federation dated 04.09.2013 No. 776 "On approval of the Rules for the organization of commercial water metering, Wastewater".

According to these Rules, subscribers or organizations operating water or sewer networks and providing water or wastewater transportation services are required to maintain commercial records. Unless otherwise provided by the terms of water supply agreements or water transportation agreements.

The same Rules stipulate that the organization of commercial accounting of water and wastewater must comply with the requirements of legislation on ensuring the uniformity of measurements.

Requirements for measuring instruments and methods were approved by the Federal Law of 06.26.208 No. 102-ФЗ “On ensuring the uniformity of measurements”.

Allowed for use measuring instruments that have passed verification in accordance with the provisions of this Federal Law. When approving the type of measuring instruments, accuracy indicators are established, the interval between calibrations of measuring instruments, as well as the verification procedure for this type of measuring instruments. Art. 9. p. 1, article 12. p. 102-FZ

Commercial metering of water, wastewater using metering devices

Commercial accounting of water and wastewater should be carried out using metering devices, on the basis of which the following are monitored:

• information on meter readings as of the 1st day of the month following the billing month;
• information about current readings of metering devices.

At the same time, commercial metering using metering devices provides for the possibility of using telematic systems.

If the technical characteristics of the metering devices used allow the use of telemetry systems to transmit meter readings and there is financial and technical support for installing telemetric modules and telemetric software, metering (metering) of metering data is carried out remotely using such telemetry systems. Rules for the organization of commercial accounting of water and wastewater, clause 10

However, the use of telematics systems does not exclude the possibility that subscribers or transit organizations are required to admit representatives of organizations providing water or wastewater to metering devices to verify readings and verify compliance with instrument operating conditions.

In case of discrepancies between the data provided and actual consumption, an act of reconciliation of meter readings is drawn up. Such an act is the basis for the allocation.

In the event of a discrepancy between the readings of the metering devices and the information provided by the subscriber or transit organization, in the order established by the Rules, the organization providing water supply shall draw up an act of verification of the readings of the metering devices. Rules for the organization of commercial accounting of water and wastewater, clause 12

According to these Rules, the possibility of using control metering devices is provided. Installing a parallel meter allows you to verify the readings with a water meter on the side of the resource organization, and in case of discrepancies, promptly require an extraordinary verification of their water meter.

Commercial water metering

The “Rules for the Organization of Commercial Accounting for Water and Wastewater” stipulate that commercial accounting may also be conducted by calculation. This means that the calculation does not use the data of metering devices, but special calculation methods approved by the Rules.

The calculation method is applicable in cases provided for by the Federal Law dated 07.12.2011 No. 416-ФЗ "On Water Supply and Sanitation":

• in the absence of a metering device;
• in case of malfunction of the meter;
• in case of violation of the deadlines for the submission of evidence within 6 months, with the exception of cases of prior notification by the subscriber about the temporary cessation of water consumption.

The provisions of the "Rules for the Organization of Commercial Accounting for Water and Wastewater" contain the following calculation methods:

• guaranteed water supply method;
• a method for calculating the throughput of devices and structures used to connect to centralized water supply systems;
• the method of calculated average monthly (daily average, hourly average) amount of water supplied (transported);
• method of summing up water volumes.

The rules also determine when and which method to apply.

Guaranteed water supply method

Calculation by the method of guaranteed volume of water supply assumes that the delivered volume is predetermined by water supply agreements. This method is used in the following cases:

• in the absence of a water meter at the subscriber;
• if the actual period of operation of the metering device from the date of admission to its operation until its failure was less than 60 calendar days.

Method for calculating the throughput of devices and structures

When using the method of accounting for throughput, it is assumed for calculation that the water speed is 1.2 meters per second per full cross section in round-the-clock working devices for receiving water. At the same time, the volume of wastewater is considered equal to the volume that was sent to the subscriber, taking into account surface wastewater, if the water supply and wastewater disposal scheme, or an agreement, provides for their reception.

This method is used in the following cases:

• in the absence of metering devices approved for operation within 60 days after receiving notification of the need for installation from the resource organization;
• if the meter readings are not provided for 6 months, not counting the cases when the subscriber has previously notified the resource organization about the temporary cessation of consumption;
• after 60 days from the date of the malfunction of the meter or the dismantling of the meter.

Method of Estimated Average Monthly, Average Daily, and Hourly Amounts of Water Delivered

The method of calculating the amount of water supplied is applied based on the meter reading for the last year. Moreover, if the meter has been working for less than 1 year, the data for the actual period of its operation are accepted for calculation.

This method is used in cases when the meter is defective or dismantled for verification, repair or replacement, but not more than 60 days after the establishment of such a fact.

Water Volume Summation Method

The method of summing up water volumes consists of determining, according to the testimony of metering devices or the calculation method, the volume of water that is supplied to subscribers or other transit organizations.

The method is used if there is no water metering device at the transit organization, and also if the meter is defective or dismantled in order to verify, repair or replace it.

Commercial wastewater accounting

In cases where the metering device is defective or missing, and also if the deadlines for providing evidence on it are violated within 6 months, commercial accounting of wastewater is carried out by calculation.

In the calculation method, the volume of wastewater discharged is considered equal to the volume of water that was supplied from all sources of water supply.

If the subscriber does not have a metering device or a metering device malfunctions (including the dismantling of the metering device in connection with its verification, repair or replacement), violation of the terms for the meter readings, the volume of waste water discharged by the subscriber is taken equal to the volume of water supplied to this subscriber all sources of water supply.

If the water supply scheme or the wastewater treatment contract provides for the reception of surface wastewater, then such waters, in the absence of metering devices, are also taken into account by the calculation method in accordance with the methodological guidelines set forth in paragraph 25 of the Rules.

Commercial accounting of surface wastewater is carried out by the settlement method in accordance with the guidelines for calculating the volume of received (allocated) surface wastewater, approved by the Ministry of Construction and Housing and Communal Services of the Russian Federation. Rules for the organization of commercial accounting of water and wastewater, p.23

The calculation method is also applicable for unauthorized connection or using a centralized drainage system. At the same time, the "Rules for the Organization of Commercial Accounting for Water and Wastewater" provide for the calculation according to this method only for the period of time during which unauthorized accession or use lasted, but not more than 3 years.

If the metering device is not available at the transit organization, or in cases of malfunction or dismantling, the volume of wastewater is determined by the calculation method by summing the volume that was allocated to the subscribers and the volume of surface wastewater accepted by the transit organization.

Features of commercial accounting of hot water (coolant)

Commercial accounting of the heat carrier is carried out on the basis of Decree of the Government of the Russian Federation of November 18, 2013 No. 1034 “On the commercial accounting of heat energy, heat carrier”. The decree provides that commercial accounting of the coolant can be organized both by heat supply organizations and by consumers of heat energy.

Commercial accounting of the coolant is carried out using metering devices. At the same time, the Decree “On the commercial accounting of heat energy, heat carrier” allows the installation of devices for monitoring the flow and consumption of heat carrier at the metering unit.

The heat supply organization, heat network organization and the consumer have the right to install additional devices on the metering unit to control the supply and consumption of heat energy, heat carrier, including for remote reading of the heat meter, which do not interfere with the commercial metering of heat energy, heat carrier and do not accuracy and quality of measurements;

If remote metering equipment is installed on the metering unit, access to the specified system is entitled to the heat supplying (heating network) organization and the consumer in the manner and on the conditions determined by the contract. PP of the Russian Federation of November 18, 2013 No. 1034 "On the commercial accounting of thermal energy, heat carrier"

Organization of commercial metering of the coolant also includes a procedure for regularly taking meter readings.

In accordance with the Decree “On the commercial accounting of heat energy, heat carrier”, if the technical characteristics of metering stations allow the use of telemetric systems, the installation of ASKUV - automated systems of commercial water metering that transmit readings remotely is performed.

If the technical characteristics of metering stations allow the use of telemetry systems for transmitting meter readings and there is financial and technical support for installing telemetry modules and telemetric software, metering (metering) of metering devices is done remotely using such telemetry systems. PP of the Russian Federation of November 18, 2013 No. 1034 "On the commercial accounting of thermal energy, heat carrier"

Moreover, it is assumed that heat meters equipped with standard industrial protocols can be equipped with additional devices that allow remote data collection in automatic mode.

Features of commercial accounting of surface wastewater

Surface wastewater - the type of wastewater discharged from the territories of residential houses, construction sites and industrial zones resulting from precipitation, snowmelt, watering of territories, etc.

Features of the commercial metering of surface wastewater are defined by the “Rules of Cold Water Supply and Sanitation” approved by Decree of the Government of the Russian Federation of July 29, 2013 No. 644. According to these Rules, the subscriber is obliged to ensure the metering of surface wastewater by installing a meter.

The subscriber is obliged to install meters of cold water, wastewater on the border of operational responsibility, the balance sheet of the subscriber’s water supply and sewage networks and the organization of a water supply and sewage system or in another place specified in the cold water supply agreement, water disposal agreement or a single cold water supply and sanitation agreement established by the legislation of the Russian Federation on energy conservation and on improving energy efficiency. Rules for cold water supply and sanitation, p. 35

Designing a metering station

The metering unit is designed based on project documentation. Such documentation is prepared by specialized organizations or private designers.

Based on the development results, the project includes:

• explanatory note;
• drawing documentation.

Also, the project provides annexes:

• terms of reference for the design of a water metering unit approved by the subscriber;
• program and methodology for testing the metering unit;
• if there is a narrowing, the calculation of hydraulic losses;
• documentation for the measuring instrument;
• certificate of admission to design work.

The design of the metering unit is based on technical specifications. Such conditions are issued by the organization providing water supply. “Rules for the Organization of Commercial Accounting for Water, Wastewater” provide for the issuance of technical specifications within 10 business days from the date of receipt of the application for their issuance.

According to the Rules, the technical conditions must contain:

• requirements for the location of the metering station;
• requirements for the installation scheme of the meter and other components of the metering unit;
• requirements for the technical characteristics of the meter, including accuracy, measurement range and level of error.

Approval of the metering unit in operation

The "Rules for the Organization of Commercial Accounting for Water, Wastewater" permit the admission of the metering station into operation by the subscribers themselves after concluding a contract with the organization providing water supply or sanitation. To provide admission from the subscriber, an application is formed.

The rules stipulate that admission is granted no later than 15 working days from the day of receipt of the application from the subscriber.

The application for admission must contain:

• details of the subscriber or transit organization, as well as contact details with the phone number of the person from whom the application was received;
• details of contracts concluded for water disposal, water transportation, etc.
• date and time at which it is possible to allow the metering station into operation.

Also attached to the application are copies certified by the subscriber or transit organization:

• design documentation for the equipment of the metering station;
• passports for metering devices that are part of the metering unit;
• documents confirming the passage of the last calibration of metering devices.

Among other things, documents confirming the right of a person to submit an application on behalf of a subscriber or transit organization are attached to the application.

According to paragraph 39 of the Rules, when admitting the metering station into operation, the following are also checked:

• compliance of serial numbers on metering devices with the numbers indicated in their passports;
• compliance of the metering unit with design and technical documentation, including the configuration and installation diagram of metering devices;
• the presence of signs of the last calibration, with the exception of new metering devices;
• operability of metering devices included in the metering unit;
• the operability of telemetry devices if they are included in the metering unit.

In case of discrepancies with the specified requirements, the metering unit is not allowed to operate.

When the metering device is installed by the organization providing water supply, access to the operation of the metering unit is carried out in accordance with paragraph 46 of the "Rules for the Organization of Commercial Accounting for Water, Wastewater":

The water supplying organization shall notify the subscriber of the date and time of the admission procedure no later than 5 working days before the day of admission, and if the subscriber’s representative does not appear, the water supplying organization shall admit without the participation of the subscriber’s representatives and then sent to him Address of the admission certificate. Rules for the organization of commercial accounting of water, wastewater, paragraph 46

Meters are considered approved for operation from the date of receipt of the Certificate of admission of the metering station with a copy of the passport for metering devices.

Operation of the metering unit

The metering unit is operated in accordance with its technical documentation. In case of failure of the metering unit, the subscriber should immediately notify the organization that provides water supply or sanitation.

In accordance with the "Rules for the Organization of Commercial Accounting for Water, Wastewater", the organization is provided with the following information:

• meter readings at the time of the failure of the metering unit;
• estimated time for dismantling metering devices requiring repair (at least 2 working days).

According to the Rules, it is necessary to eliminate an existing malfunction within 60 days from the moment of failure. Dismantling of metering devices for transmission for repair, as well as subsequent installation, is carried out in the presence of representatives of the organization providing water supply or sanitation.

The person operating the metering unit, in the event of the metering unit being released, is obliged to report the meter readings at the time the metering unit fails (a malfunction occurs), and also eliminate the detected malfunction (repair) within 60 days from the day the metering unit or metering devices were released out of order (malfunction).

The organization providing water supply and (or) water disposal must be notified of the dismantling of metering devices at least 2 working days in advance.
Dismantling of metering devices that are part of the metering unit or metering unit, as well as their subsequent installation, are carried out in the presence of representatives of the organization that provides water supply and (or) wastewater disposal, unless such representatives have appeared by the deadline for dismantling the metering devices or metering unit, specified in the notice. Rules for the organization of commercial accounting of water, wastewater

In accordance with the Rules, the metering unit is considered to be out of order in the following cases:

• metering devices do not display measurement results;
• broken control seals or verification marks;
• there are mechanical damage to metering devices or other elements of the metering unit;
• the permissible error of meter readings is exceeded;
• there are inserts into pipelines that are part of the metering station, not provided for in the design documentation for the equipment of the metering station;
• there are signs of unauthorized interference with the operation of the metering station;
• the calibration period of metering devices has expired.

After repair, replacement or verification of metering devices, employees of the resource organization make sealing devices.

Installation of seals on metering devices is carried out by employees of a resource organization at no cost. Charging a subscriber is possible only in cases where the sealing was repeated due to violation of the seal or verification marks.

Cost reduction with ASKUV

The increase in energy tariffs leads to the need to increase the efficiency of their use. Reliable accounting of energy resources allows not only to use them rationally, but also to reduce payments for their consumption.

The main guarantee of reliable accounting is the use of telematics systems that allow you to remotely and timely transmit consumption indications, as well as timely monitor system malfunctions.

See the system of automated commercial accounting "Strizh"

Continuing the article.

Description:

When maintaining documentation, it is necessary to immediately record any deviations from the standard project at all stages of the work in the presence of representatives of interested organizations. This approach greatly simplifies the final commissioning of the finished object.

Features of installation of metering stations for cold and hot water

A. N. Orekhov, Director of LLC Zeus Construction Company

In the days of the USSR, control over the expenditure of natural resources, in particular drinking water, was practically absent - the state policy of pricing water, which was subsidized in the past, transferred this resource to the category of waste. As a result, water supply networks did not develop along the path of optimizing the existing scheme and careful operation of the water source, but by the method of developing new ones. At the same time, insufficient attention paid to the protection of water sources has led to the fact that the number of surface water bodies suitable for intake of drinking quality water has significantly decreased throughout our country.

At the end of the 20th century, the planned economy of our country was replaced by a market economy, which turned drinking water into a commercial product. By the beginning of the XXI century, the resource of many water intake structures built back in the middle of the last century was exhausted. This is most noticeable on the example of large cities. A particularly difficult situation has developed in Moscow and the surrounding region.

The largest city in Russia has virtually no nearby sources of water supply that can completely block its need for drinking water. To solve this problem, a canal named after Moscow was built, through which water from the created Moscow Sea through a cascade of lifting stations flows to consumers.

In recent years, the mass introduction of a multi-stage commercial water metering system has begun at all stages of its transportation from the intake to the consumer. This approach allows not only to stimulate the economical consumption of water by consumers, but also creates a tough framework for operating organizations, forcing them to closely monitor the state of the distribution network in order to avoid unnecessary losses due to leaks.

Given that during the Soviet era, this issue was not given enough attention, the vast majority of residential buildings, which are the main consumers of water in large cities, are not equipped with metering devices.

In order to improve the situation of water metering, the Moscow government is implementing a large-scale program for the reconstruction of metering stations in residential buildings.

Installation works at such facilities have some features. Most of the work is carried out in the basement of houses with a small height in the light, devoid of natural light, cluttered with transit pipelines. An important complicating factor is the very limited time for the installation of metering stations, which should be carried out from 11.00 to 17.00 (at the request of the majority of HOAs), when most of the residents are outside the house.

To ensure successful work, much attention needs to be paid to preparatory work, such as:

- initial visit to all objects without exception with mandatory photographic fixation and minimum necessary measurements of the premises. Special attention should be paid to the location on the measurement drawing of transit passage passages and the location of electrical and low-current equipment. It is also desirable to measure the height of the room and measure the paths to the room of the water meter assembly. These actions allow you to make the necessary changes to the design of typical water meter inserts before they begin to assemble and install, which ultimately minimizes welding work directly in the assembly room, which in turn reduces the overall time of work. This is also facilitated by the early production of typical water meter inserts in the equipped workshop;

- early resolution of the issue of power supply of premises with representatives of DEZ (Homeowners Association). The power allocated to the room should ensure the operation of all necessary tools. As a rule, it is 5.5–7 kW. It is recommended to use your own portable switchboard, which allows connecting both single-phase and three-phase equipment, equipped in addition to circuit breakers with a residual current circuit breaker. Such a complete set of the panel provides a high degree of safety during installation work, and also prevents blackout of the entrance or the entire apartment building in the event of an accidental short circuit. All equipment used must have a protection class of at least IP55. Electrical outlets installed on the switchboard and plugs of hand-held power tools must have IPX64 degree of protection;

- in order to avoid severe gas contamination in the room of the water meter unit during electrical welding, it is advisable to install a portable centrifugal fan with a capacity of 200-300 m 3 / h with a pressure of about 150 Pa and the required amount of flexible duct to discharge the polluted air to the street. Such measures are mandatory when working in a confined space with a small air cubic capacity, since the gases generated during welding can cause serious harm to the health of workers, especially when working with galvanized pipes.

The absence of drainage pits in the places of water supply to the building complicates the work significantly. When draining the system during dismantling and welding, a significant amount of water accumulates, which, spilling on the floor, makes electric welding unsafe. To solve this problem, the brigades were supplied with hoses with a diameter of ¾ “at least 25 m long and a drainage pump of low power.

Recommended team composition from experience: two locksmiths and one welder with experience in pipelines. Subject to the recommendations described above, the operating team is able to mount 3-4 hot and cold water metering stations with a meter diameter of 25-50 mm per day, provided the houses are located within a few blocks of each other.

The main attention should be paid to the quality of welding work, because if the leaking flange or coupling can be tightened without emptying the system, then the fistula in the weld after filling the system cannot be eliminated. Therefore, it is recommended that all fully finished blocks are pre-tested hydraulically at a production base. This will significantly reduce the time to eliminate leaks in the "field" conditions and increase labor productivity.

When maintaining documentation, it is necessary to immediately record any deviations from the standard project at all stages of the work in the presence of representatives of interested organizations. This approach greatly simplifies the final commissioning of the finished object.