Conducting communications - milestone preparing the facility for commissioning.

Inspection of engineering systems is carried out in new structures and in buildings already put into operation. This is a whole complex of works and events. In their course, experts evaluate engineering networks, their technical condition. As a result, the building owner receives information about network defects. Their functionality, ways to correct shortcomings are described in detail. It is analyzed how the engineering networks correspond to the project, sanitary requirements, building regulations.

The network survey is carried out both separately and during the assessment of the building.

Procedure value

Regular examination technical condition networks eliminates major accidents, damage to property, injuries to residents and employees.

An inspection of engineering networks is necessary if:

• Accidents often occur in the building,
• Systems have been refurbished
• Was overhaul,
• The building has passed to another owner.

Engineering systems are assessed:

• Plumbing (hot, cold water),
• Heating,
• Sewerage, water disposal,
• Ventilation, air conditioning,
• Fire alarm,
• Power supply.

Our company is engaged in technical expertise at various levels. Technical inspection of engineering systems is carried out by experts high level. We offer our clients several options for surveying engineering networks. The price will be from 30,000 rubles, the lead time is 5-10 working days. To choose desired option examination of engineering systems, call our managers. They will tell you in detail about the composition of the procedure. For the convenience of clients, a specialist travels to an object or to a meeting within the Moscow Ring Road.

DEPARTURE OF THE SPECIALIST

to a meeting or to an object legal entities within the Moscow Ring Road

What are we doing

Technical research of engineering networks is carried out by highly qualified specialists. They find out:

• Are project requirements met?
• Are there system defects?
• Do the systems meet modern standards, sanitary and hygienic standards,
• Do the systems have unused areas and how much they are needed for the operation of all systems,
• How worn out are the building systems, whether they need repairs, how much to carry out,
• How to modernize engineering networks, increase their functionality.

The result of the work of experts- a detailed document describing the current state of networks, their failures and features leading to a decrease in their efficiency. Experts give recommendations on elimination of defects, modernization, scheduled repairs.

Stages of work

Survey of engineering networks consists of 4 stages:

• Initial - preparation for the survey, analysis of technical documentation. The package of papers includes passports for network elements, breakdown reports, drawings, projects.
• Preparation - inspection of external elements, valves, fittings,
• Detailed - examination by instrumental, laboratory methods. For measurements technical parameters high-precision instruments are used. Survey work is automated thanks to the new software. The customer receives detailed description the state of each node, its defect, operating parameters.
• Documentary - final stage when all the identified data is summarized in a single document. This defect description is used for repair work, modernization. Experts give recommendations on improving the life support systems of the building, replacing individual sections, and dismantling obsolete components.

Expert opinion

All information obtained during the research is documented in the final technical report. It describes the state of communications, the possibility of improving their efficiency, the causes of accidents, loss of potential in certain areas. They confirm the data of the report with other technical documents: drawings, projects, reports, photographs, which show the initial state of communications, sheets with a description of defects.

One procedure for surveying engineering systems different buildings. Regular inspection of engineering networks guarantees the safety of residential and industrial buildings.

We guarantee professional, fast learning communication in every detail. Order from us an assessment of the technical condition of water supply, sewerage, heating, air conditioning systems. Research is carried out in our own laboratory, which ensures accurate results. We carry out construction expertise of various scale facilities in Moscow and the Moscow region.

Do you want to make sure the communications are working before buying a building? Order a technical study of communications in our company! We will save your money and save you from irrational purchases!

During a comprehensive survey of buildings, it is mandatory to check engineering networks, which are the main elements of the facility. The survey helps to make a real assessment of their technical condition, timely identify defects, damage and malfunction of the elements of the overall system.

Checking the technical condition is carried out in accordance with VSN 58-88 (p) "Regulations on the organization and conduct of reconstruction, repair and Maintenance buildings, communal and socio-cultural facilities”, and the physical wear check is determined in accordance with the document VSN 53-86 (p) “Rules for assessing the physical wear of residential buildings”.

In the case of previously performed repair or replacement of individual elements of the system, physical wear is determined according to certain tables, as a weighted average. Based on the final results of the inspection and determination of the technical condition of the system, a decision is made on next steps and the possibility of subsequent operation of engineering networks.

Emergency situations with engineering systems, as a result of which residential premises are flooded, arise for the following reasons:

1. Poor installation of shut-off valves.
2. The use of poor quality materials that do not have corresponding certificate quality and warranty obligations, when installing the pipeline.
3. Moral and physical deterioration of piping, heating and sewerage systems.
4. The presence of defects in the overall system.

During the examination due to the accident, the place of its occurrence is simultaneously established. At this stage, the technical condition of the valves and the general condition of the pipeline system are assessed. If during the examination it turns out that the shut-off valves, then an additional examination of its destroyed parts is carried out. Laboratory examination helps to determine the cause of failure and the suitability of the material.

In case of occurrence emergency when the system is put into operation, after the elimination of the consequences and elimination of the cause, an act is drawn up, which indicates the cause of the accident, the location and the total area of ​​damage.

After restoration work a defective statement is drawn up, in which the following information is indicated and attached:

• the location of the defect;
• the number of detected damages and their name;
• the cause of the defect;
• photographed defects;
• measuring the parameters of the damage caused and the humidity of the building structure;
• estimate for restoration work.

Our company has sufficient experience, tools and a highly qualified staff of experts to help produce qualitative examination engineering networks, draw up an appropriate act, a defective statement and make calculations on the amount of damage caused, as well as give recommendations for troubleshooting.

Description:

Completion of construction installation work in engineering systems is not final stage and does not allow the building to be put into operation. This is preceded by an important stage - commissioning.

Commissioning works in engineering systems

A. N. Orekhov, CEO OOO SF ZEUS

A. V. Taran, commercial director of SF ZEVS LLC

Completion of construction and installation works in engineering systems is not the final stage and does not make it possible to put the building into operation. This is preceded by an important stage - commissioning. Only after their completion, the construction object can

It would be appropriate to consider the implementation of commissioning works at building example saturated with engineering systems. Let's say kindergarten with integrated medical center built on an individual project. The building under consideration is rectangular in plan, with a variable number of storeys (1–3 floors), for 180 seats. Under part of the building there is a basement, and above a part of the third floor there is an air pressurization ventilation chamber. Buildings (premises) of preschool educational institutions must be equipped with drinking, fire-fighting and hot water supply systems, sewerage and drainage in accordance with SNiP 2.04.01–85 *.

The following systems have been designed and installed in the building:

• water supply;
• fire water pipeline;
• household sewerage;
• storm sewer;
• heating;
• ventilation;
• smoke ventilation;
• individual heating point;
• pool water treatment.

The procedure for commissioning is regulated by SNiP 30505–84 “Technological equipment and technological pipelines”, SNiP 30505–86 “Electrical devices”, SNiP 30507–85 “Automation systems” and SNiP 30501–85 “Internal sanitary systems”.

Commissioning and testing in each case are specific, individual. Depending on the type of equipment, it can take up to 72 hours. The quality of commissioning depends largely on the level of technical knowledge, the experience of the specialists conducting them, as well as on the quality of the project, construction and installation work.

The complexity of commissioning depends on the specifics of the equipment of each particular facility. The greatest difficulty is the search for the causes that underlie equipment failures.

Testing of engineering systems

Before commissioning, it is necessary to pressure test the systems. Pressure testing is a hydraulic test closed system overpressure. Upon completion of installation work assembly organizations must be fulfilled:

• tests heating systems, heat supply, internal cold and hot water supply and boiler rooms by hydrostatic or manometric method with drawing up an act, as well as flushing systems;
• systems testing internal sewerage and drains with drawing up an act;
• individual tests of the installed equipment with drawing up an act;
• thermal testing of heating systems for uniform heating heating appliances.

Testing of systems using plastic pipelines should be carried out in compliance with the requirements of SN 478–80. Tests must be carried out before finishing works. Pressure gauges used for testing must be verified in accordance with GOST 8.002–71.

During individual testing of equipment, the following work must be performed:

• checking the compliance of the installed equipment and the work performed with the working documentation and the requirements of regulatory documents;
• testing equipment at idle and under load for 4 hours of continuous operation. At the same time, the balancing of the wheels and rotors in the assembly of pumps and smoke exhausters, the quality of the stuffing box, the serviceability of starting devices, the degree of heating of the electric motor, and the requirements for assembly and installation of equipment specified in the technical documentation of manufacturers are checked.

Hydrostatic testing of heating systems, heat supply, boilers and water heaters should be carried out at a positive temperature in the premises of the building, and cold and hot water supply systems, sewerage and drains - at a temperature of at least 5 ° C. The water temperature must also be at least 5 °C.

In this article, we will consider the commissioning of water supply systems, household and storm sewers of a preschool educational institution (preschool educational institution). Next, we will consider the features of the building systems, as well as the main aspects of the ongoing commissioning.

Water supply

The building has a hot and cold water supply system, made according to the riser system of galvanized steel pipes. On all branches, as well as in front of all water taps, shut-off taps are installed, the systems are equipped with pressure regulators “after themselves”, providing equal pressure in cold and hot water supply systems.

Towel dryers in bathrooms heating appliances in wardrobes for drying clothes, they are connected to a hot water supply system.

During the summer preventive shutdown of the hot water supply system, the heat supply of these devices should be provided by boilers connected to electric power plants. The project did not provide for their installation. The absence of boilers was revealed at the installation stage and was concluded supplementary agreement for their installation.

The main feature of the system is the presence of (children's) mixing thermostats in some of the bathrooms, which limit the temperature of the water supplied to the water taps to 40 ° C to prevent children from getting burned with hot water.

The complex of commissioning works in DHW and cold water systems includes:

• testing of the water supply system;
• flushing systems from sludge, dirt and scale;
• filter cleaning;
• setting pressure regulators on cold and hot water at 3.5 bar;
• setting thermostats to the required temperature.

Testing of water supply systems. Internal cold and hot water supply systems must be tested by the hydrostatic or manometric method in compliance with the requirements of GOST 24054-80, GOST 25136-82.

The value of the test pressure in the hydrostatic test method should be taken equal to 1.5 excess working pressure. Hydrostatic and manometric tests of cold and hot water supply systems must be carried out before the installation of water fittings.

Systems are considered to have passed the test if within 10 minutes. being under test pressure during the hydrostatic test method, no pressure drop of more than 0.05 MPa (0.5 kgf / cm 2) and drops in welds, pipes, threaded connections, fittings and water leakage through flushing devices.

Upon completion of the hydrostatic test, it is necessary to release water from the internal cold and hot water supply systems.

Manometric tests of the internal cold and hot water supply system should be carried out in the following sequence: fill the system with air with a test overpressure of 0.15 MPa (1.5 kgf / cm 2), if defects in the installation are found by ear, the pressure should be reduced to atmospheric and the defects should be eliminated; then fill the system with air at a pressure of 0.1 MPa (1 kgf / cm 2), hold it under test pressure for 5 minutes. The system is recognized as having passed the test if, when it is under test pressure, the pressure drop does not exceed 0.01 MPa (0.1 kgf / cm 2).

Flushing of water supply systems. Flushing of water supply systems is carried out before the installation of water fittings. When flushing, the water supply system is completely filled with water, then the valve connecting the system to external networks is closed. Further, hoses are connected to the drain cocks used to empty the risers to drain contaminated water into the sewer.

Such flushing cannot guarantee the removal of all sludge. Now on Russian market widely represented are special devices for flushing water supply systems, heating systems, as well as heat exchange and other similar equipment.

The principle of operation of the washing machine is to create a mixture of air and water supplied to the system in pulses. Compressed air supplied by a compressor connected to the sink. The mixture of air and water passes through the washed equipment and is discharged into the sewer. The pulsation can be changed (optimized) step by step by lengthening or shortening the distance between pulses, depending on the purpose of the application.

If the unit is not yet connected to a drinking water supply, nearby hydrants should be used. Using two flexible hoses, the sink is connected to the system immediately after the water meter and water filter. If the water supply system is not connected to external networks, then hydrants located in the immediate vicinity of the building can be used to flush the system. For the operation of the sink, a certain actual pressure in the network is necessary (for a number of manufacturers - at least 2 bar). If this value is not reached, it is necessary to install a spare tank with a booster pump that maintains required pressure. Wash direction from bottom to top. If the length of the pipeline exceeds 100 m, then it is necessary to flush the system in parts using an intermediate sink connection.

It is necessary to sequentially open the plugs that close the places of future connection of water fittings and rinse until the flushing water discharged into the sewer becomes transparent.

After washing, it is necessary to filter cleaning. A hose is attached to the tap in the lower plug of the filter, which serves to remove sludge, dirt and scale, which is designed to be drained into the sewer. The valve after the filter is closed. Water from the main goes into the drainage and takes out with it the mechanical impurities deposited on the filter mesh.

The next stage of commissioning - adjustment of pressure regulators. A pressure regulator is a type of control valve that is installed on the pipeline and serves to equalize the pressure in the system. This type pipe fittings most often it is a direct action valve, i.e. works without the use of additional energy sources.

The principle of operation of the equipment is quite simple: the regulator is adjusted to any pressure value (which is maintained before or after it) or differential pressure by adjusting with a restrictive ring according to the pressure gauge on the valve body. When the pressure in the pipeline changes, the force of action on the membrane, which plays the role of a sensitive element and responds to changes in pressure in the pipeline, also changes accordingly. The difference between the force acting on the diaphragm and the spring force moves the regulator cone to a new position, equalizing the pressure.

The regulator is adjusted to the desired pressure by changing the compression of the setting spring. The adjustment is carried out using adjustment charts in accordance with the manufacturer's instructions or pressure gauges.

Sewerage

The building is designed with a system of household and storm sewerage. In the building, according to the norms, the following height of installation of children's sanitary appliances from the floor of the room to the top of the side of the device:

• washbasins for children aged 3-4 years - 0.4 m;
• for children 4–7 years old - 0.5 m;
• deep shower tray - 0.6 m;
• shallow shower tray - 0.3 m (with a height of the shower screen above the bottom of the tray 1.6 m).

In the shower rooms, laundry rooms, as well as in the washing and preparation workshop of the catering unit, the floors are equipped with drain ladders with appropriate floor slopes to the ladder openings.

Due to the absence in this building of any technical devices in the sewerage system (pumps, electric valves), commissioning is reduced to checking the tightness and patency of the systems.

Tests of internal sewage systems are carried out by the method of spilling water by simultaneously opening 75% of sanitary appliances connected to the tested area during the time required for its inspection.

The system is considered to have passed the test if no leaks are found through the walls of pipelines and joints during its inspection.

Tests of sewerage outlet pipelines laid in the ground or underground channels are carried out before they are closed by filling with water to the floor level of the first floor.

Testing of sections of sewerage systems hidden during subsequent work should be carried out by spilling water until they are closed with drawing up an inspection report for hidden work in accordance with mandatory Appendix 6 of SNiP 3.01.01–85.

Testing of internal drains should be carried out by filling them with water to the level of the highest drain funnel. The duration of the test shall be at least 10 minutes.

Gutters are considered to have passed the test if no leaks are found during the inspection, and the water level in the risers has not dropped.

Today, engineering networks are an important part of not only separate building, but also a large system, with the help of which the facilities are provided with the necessary resources. Special attention is paid to their condition, because it is very important to maintain the system's performance and prevent possible breakdowns in a timely manner.

Inspection of engineering systems and networks - a set of activities carried out to assess the current state and functionality engineering systems, identifying defects and malfunctions, determining the possibility of connecting additional equipment, determining the compliance of engineering systems with design and regulatory documentation.

As a rule, technical inspection of engineering networks takes place during their operation. Wear and tear is an integral part of the use of the system, and it occurs under the influence of natural external factors. On average, networks can last for 10-20 years without repair and additional work, and the service life depends on external conditions, the timeliness and quality of the repairs carried out.

Stages of conducting a survey of engineering networks:

Careful inspection of the system to obtain the required parameters.

Study of the received data and project documentation. Specialists review work plans and identify possible deviations during networking.

Compliance with the standards is checked, because the service life depends on all these parameters.

If you doubt the estimate of work provided by the contractor, then specialists will be able to determine the cost of installing the system and prevent the possibility of overestimation.

Technical inspection of engineering systems is carried out for almost all types of networks, depending on the requests of the customer. It can be carried out both for all elements, and for individual ones.

Elements of the engineering system that may be subject to inspection:

1. Inspection of hot water systems.

On examination given element description is carried out DHW systems, inspection of pipelines and circulation pumps, description of hot water preparation technology and used water heaters, instrumental measurements - temperature measurements, determination of the thickness of corrosion deposits. Development of drawings with the application of pipelines and wiring of the hot water supply system on floor plans, indicating the diameters and linking to existing structures.

2. Inspection of heating and heat supply systems - inspection of the heat input and central heating, description of the heating system and the layout of the supply and return lines, inspection of heating devices, taking temperature measurements, determining the thickness of the narrowing of the living section of pipelines, drawing the heating system on floor plans.

3. Inspection of cold water supply systems - inspection of the water supply to the building, inspection of the metering station cold water and instrumentation, description of the water supply system, determination of the thickness of corrosion deposits in pipelines, drawing the cold water supply system on plans with the designation of diameters.

4. Inspection of sewerage systems - inspection of pipelines and sanitary fixtures, inspection of ventilation risers and revisions, determination of the slope horizontal pipelines, drawing sewer risers and devices on floor plans.

5. Inspection of ventilation systems - type determination ventilation system, inspection of ventilation ducts and ventilation equipment, determination of air exchange in the examined premises of the building, identification of defects and comparison with regulatory requirements.

6. Examination of waste disposal systems - examination of waste collection chambers, establishing the integrity and tightness of the shaft, establishing compliance with the requirements of design and regulatory documentation.

7. Inspection of gas supply systems - description of the structural diagram of the gas supply system, study of documentation for gas pipelines and equipment, determination of the compliance of the gas pipeline system with design documentation.

8. Inspection of the technical condition of drains - a description of the drainage system, reveal unacceptable damage - blockages, tightness of joints, the presence of gratings and caps, the presence of an electric heating cable.

9. Inspection of electrical networks and means of communication - description of the input-distributing device, inspection electrical cabinets on the floors, inspection lighting fixtures, inspection of low-voltage systems, drawing electrical panels and power supply wiring on building plans.

10. Inspection of engineering equipment.

AT this case the actual condition of the used equipment for various purposes is determined, as well as physical and moral wear and tear in accordance with the identified defects and malfunctions.

Technical inspection of equipment and networks is carried out taking into account three determining factors:

Much attention is paid to physical wear, it is he who becomes the main problem during the operation of systems. This factor depends on the general condition, it is determined by the current indicators, the number of repairs and restoration work carried out.

Obsolescence. When determining it, one takes into account possible violations during the arrangement, which affect General characteristics systems.

Obsolescence of equipment, as a result of which it no longer meets modern requirements.

The composition of the technical report on the inspection of engineering systems and networks:

1. Explanatory note- description of surveyed engineering systems

2. Inspection of heating and heat supply systems of the building

description of heating and heat supply systems

drawing heating systems on floor plans

instrumental examination of heating and heat supply systems, defects, conclusions and recommendations

3. Inspection of building ventilation systems

description of ventilation systems

drawing ventilation systems on floor plans

instrumental examination of ventilation systems, defects, conclusions and recommendations

4. Inspection of water supply and fire extinguishing systems of the building

description of water supply and fire extinguishing systems

drawing water supply and fire extinguishing systems on floor plans

instrumental examination of water supply and fire extinguishing systems, defects, conclusions and recommendations

5. Inspection of the building's drainage systems

description of drainage systems

drawing drainage systems on floor plans

instrumental examination of drainage systems, defects, conclusions and recommendations

6. Inspection of building electrical systems

description of power supply systems

drawing power supply systems on floor plans

instrumental inspection of power supply systems, defects, conclusions and recommendations

7. Results of calculations of existing loads on the building, analysis of input nodes for the possibility of increasing loads, identification of places for possible connections of new networks

8. Conclusions based on the results of the inspection of engineering systems of the building

10. Executive schemes - plans with applied engineering systems

What may be required by our specialists in the process of work?

Project documentation.

Drawings of the system used for the preparation of work and during their implementation.

Information on the repairs carried out, the range of restoration work performed.

Other documents providing information about the object of the survey.

Thus, this inspection is often carried out not only in case of accidents or breakdowns. Our experts recommend periodically inspecting engineering systems, determining the current state and the need for repair of individual elements. Timely detected malfunctions are much easier to eliminate than their further consequences and serious breakdowns. Evaluation may also be required during litigation.

Service cost:

The minimum cost of conducting an examination of engineering networks and systems is 20,000 rubles.