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Technical report on the commissioning of the steam pipeline. Technical report on the commissioning of a cascade system installed at a specific address

2. Introduction

This technical report contains materials on optimizing the operation of the heat supply system in the village of Podozersky.

The purpose of the work is: to study the throughput of heat networks in connection with the planned reconstruction of the heat source and the calculation of the optimal operating modes of the heat supply system, the issuance of recommendations for setting up heating network subscribers.

The results of the activities carried out in full, indicated in the report,

must be:

Reducing the cost of own needs of boiler houses and the costs associated with the operation of a large number of small boiler houses;

Improving the hydraulic stability of heat networks;

Creation of the necessary pressure at the thermal inputs of consumers;

Consumption by heat network subscribers of estimated heat consumption;

Ensuring comfortable conditions in the premises of heat consumers.

2. Description of the heating system

2.1 Heat source

The source of heat in the heating network is the boiler house in the village of Podozersky. The boiler house is currently running on peat. It is planned to modernize equipment at heat sources in order to switch to another type of fuel - gas. The pressures at the outlet of the boiler houses were selected from the considerations of the minimum sufficiency of the pressures at the subscriber inputs connected to this source, subject to the adjustment - the installation of restrictive throttling washers for all heat consumers. The capacity and available capacity of the heat source were also not considered due to the lack of a project for the reconstruction of the boiler house.

The regulation of heat supply for heating is carried out according to the schedule 95/70 C. As calculations have shown, the throughput capacity of the networks of the Podozersky settlement allows maintaining the selected temperature schedule.

2.2 Heating networks

The heating networks of the village of Podozersky are two-pipe, radial, dead-end. It is possible to loop them (reconnect), if necessary, through the internal networks of the children's plant (N16-N49) The total length of the heating networks of the heating system is 5200 meters, the total volume of the networks of the heating system is 100.4 m3, the consumption for heating is 169 t / h .

The volume of heat networks was determined by the formula

where V is the volume of the heating main section in a two-pipe design, m3;

L is the length of the section, m;

D is the inner diameter of the pipes, m.

2.3 Consumers

Heat consumers of Podozersky village - 80 inputs in total. There are no large industrial consumers.

All consumers are connected directly to the heating network.

The maximum heat loads of heating systems for administrative buildings and industrial buildings, in which there are no heating and ventilation installations, residential and public buildings, were determined by the formula:

, (2)

Sanitary norms

The estimated consumption of network water for a heating system (CO) connected according to a dependent scheme is determined by the formula:

Water temperature in the supply pipeline of the heating network at the design outdoor air temperature for heating design, ° С;

Water temperature in the return pipeline of the heating system at the design outdoor air temperature for heating design, °С;

The total consumption for heating, taking into account the future (warehouse and tool shop) - 169 t / h.

3. Initial data

Temperature chart for heating needs 95/70 °C.

Estimated water consumption in the heating network is 169 t/h.

Distribution of loads by subscribers, see appendices 3 - 5.

The geodesy of subscribers and the heat source is determined by elevation marks of the area.

Heat network diagram see Appendix 2

4. Hydraulic calculations

4.1 Hydraulic calculation with available pressure at the source 20 m. st

Hydraulic calculation was carried out using a specialized computer program "Bernoulli", which has a certificate of official registration of the computer program No., registered in the Register of computer programs on October 11, 2007.

The program is designed to carry out calibration and adjustment hydraulic and thermal calculations based on the compilation of a geographic information system - a scheme of a heat network on a map of the area and filling in a database of characteristics of heating mains, subscribers and sources. The task of hydraulic calculation of pipelines is to determine the pressure losses of each section and the sum of pressure losses in sections from the outlets of the heat source to each heat consumer, as well as to determine the expected available pressures for each subscriber.

The hydraulic calculation of the external water heating network is based on the roughness of the pipelines, taken as 2 mm, since the duration of operation of most networks exceeds 3 years.


During the adjustment, the necessary constriction devices (throttle diaphragms) for heat consumers are calculated due to the non-elevator system for regulating the load on heating at subscriber inputs.

The pressures at the source were chosen based on the following considerations. The available pressures (pressure difference in the supply and return pipelines) at the inputs for non-elevator connection of heat-consuming systems must exceed the hydraulic resistance of local heat-consuming systems; pressure in a straight line should be minimal; the pressure in the return must exceed the geodetic mark by 5 meters plus the height of the subscriber's heating system (the height of the building).

To take into account the mutual influence of factors that determine the hydraulic regime of the district heating system (hydraulic pressure loss in the network, terrain profile, height of heat consumption systems, etc.), a graph of water pressure in the network was plotted in dynamic and static modes (piezometric graph).

Using the pressure graph, the following were determined:

Required available pressure at the outlets of the heat source;

Available pressures at the inputs of heat consumption systems;

The need to relocate individual sections of the network.

In order to determine the condition and throughput of the existing heating network, a hydraulic and thermal calculation of the Podozersky settlement was carried out for the existing heating loads with the following parameters.

Estimated water consumption in the heating network is 169 t/h. Estimated available head at the inlet to heating network- 20 m. Geodetic marks and pressures in the nodes of the heating network are taken in unified system reference. To achieve this pressure are calculated in meters of water column. Working scheme the heat network with the coding of cameras and subscribers, compiled in accordance with the materials provided, is displayed in Appendix 3. Geodetic marks of the heat network nodes are taken from the topographic map of the area along lines of equal heights. The lengths of the routes are calculated based on the scheme of the heat network in real scale. The internal diameters of pipelines are given to standard values.

The calculations were performed after the commissioning calculation. Thus, it was not the current state of the network that was studied, but the state of the network in the case of installing limiting washers. For subscribers with low loads (artesian well), it was not possible to establish the heating consumption corresponding to the contract due to the ban on the installation of washers with hole diameters less than 3 mm due to the tendency of small holes to quickly clog. For these subscribers, in order to eliminate "overflows", a serial connection with neighboring subscribers is recommended.

Table of required throttling devices (washers) for the option with available pressure at the source 20 m. Art. is given in Appendix 6.

Under such conditions, boilers, network pumps and the existing heating network cope with the generation, supply and transport of the calculated amount of heat.

Calculation results (piezometer, and data table in Appendix 3).

4.2 Hydraulic calculation with available pressure at the source 17 m. st

Estimated available pressure at the entrance to the heating network is 17 m. At many entrances to subscriber nodes, the available pressures are close to the internal resistance of subscribers. Conclusion - the pressure is the minimum required. For subscribers at the address Station 6 and 8 is insufficient due to the insufficient diameter of the supply pipelines. This mode does not ensure the stability of the heat network. Calculation results (piezometer, and data table in Appendix 4).

4.3 Hydraulic calculation with available pressure at the source 10 m. st

Estimated available pressure at the inlet to the heating network is 10 m. In this mode, subscribers are identified who are at risk of underheating when the pressure at the outlet of the source is systematically underestimated. Calculation results (piezometer, and data table in Appendix 5).

4.4 Hydraulic calculation to identify problem areas and subscribers.

Estimated available pressure at the inlet to the heating network is 15 m. The diameters of the washers are left as for adjustment at 20 m. Art. In this mode, subscribers with Station 6 (N14) and Station 8 (N17, N18) addresses will be problematic. They are fed through pipes of insufficient diameter for sustainable heat supply - 50 mm. The diameter should be changed to 69 mm. The internal diameter of the pipes is indicated. The result of this reconstruction is illustrated by summary piezometers in Appendix 6. Subscribers of the dead-end branch on Sovetskaya Street 12, 14, 16 and the school building on the same street are most vulnerable to sufficient pressure at the outlet of the boiler house. It is recommended to install pressure gauges, for example, in heating point school buildings to control the adequacy of the available pressure.

5. Key Findings

The results of hydraulic calculations allow us to recommend that the heating networks be adjusted to the available head at the outlet of the source of 20 m w.st. in accordance with the table, the calculation of throttling devices (washers), see Appendix 6.

To eliminate overheating in small subscribers, it is proposed to use a serial connection scheme for their connection through one heat unit with one narrowing washer (throttle diaphragm). Such a connection scheme will bypass the difficulties associated with the restriction on the diameter of the narrowing device - the washer (at least 3 mm, associated with the risk of frequent blockages).

Subscribers at Stantsionnaya street 6 and 8 require re-laying of supply lines from the connection chamber with an internal diameter of 69 mm.

To control the state of the hydraulic regime, pressure gauges should be installed on the supply and return lines in the school building along Sovetskaya Street, as the most vulnerable part of the heating networks. You should also organize periodic monitoring of the readings of these pressure gauges.

For greater reliability of calculations in order to achieve the optimal operating mode, it is required to collect more detailed information about the parameters of the heating network, the source and loads of consumers.

It should be noted that the results of the calculations are valid if, along with the reconstruction of heating mains, work is carried out to install washers on the inlets of subscribers that limit the flow of the coolant to a contractual value, and flushing is carried out internal systems heating subscribers. These activities must be carried out in accordance with the attached instructions (Appendix 1, 1a).

6. List of used literature

1. SNiP Building climatology 01.01.2003

Appendix

INSTRUCTIONS

for flushing heating networks in a hydropneumatic way.

The currently used methods for flushing heat pipelines and heating systems, both by filling them with water and then discharging them into the drain, or by creating high water velocities in them in a direct-flow (ejection) or closed circuit (through temporary sumps) using network or other pumps do not give a positive effect.

Recently, the heating networks of Mosenergo, Lenenergo and a number of other cities have begun flushing heat pipelines and local heating systems using compressed air.

The use of compressed air when flushing networks increases the speed of the water-air medium and creates a high turbulence of its movement, which provides the most favorable conditions for pressure from pipes of sand and other deposits.

Heat pipelines are washed in separate sections. The choice of the length of the washed section depends on the diameter of the pipelines, their configuration and fittings.

Pipelines diameter

Pipelines diameter

Pipelines diameter

Pipelines diameter

Pipelines diameter

200mm and above

For diameters D=100¸200 mm, expansion joints with a capacity of 3–6 m3/min can be used (for example, autocompressor AK-6 with a capacity of 6 m3/min and AK-3 with a capacity of 3 m3/min). For pipelines of larger diameter, it is advisable to use two compressors or one compressor with a higher capacity.

When flushing heating networks industrial enterprises it is possible to use compressed air of turbocompressors or compressor stations.

The duration of flushing depends on the degree and nature of contamination, as well as the diameter of the pipes and the performance of the compensator.

Before starting work, the pipeline (supply and return) is divided into sections, the boundaries of which, as a rule, are wells. In the wells located at the beginning and at the end of the washed section, valves are removed or partially disassembled and devices are installed in their place, with the help of which air is admitted and flushed water is ejected.

Devices for air inlet are a flange made in the form of a flanged connection of removed fittings with welded to it gas pipe Dy=38 ¸50 mm.

To regulate the air supply and protect the compressor receiver from water ingress, an appropriate valve and a check valve are installed.


The device for selecting flushing water consists of a short pipeline (riser) with a flange on one side corresponding to the flange of the removed fittings, and a valve on the other side, as well as a rigid hose that is connected to the valve and removed from the chamber (well).

If there are no valves on the flushed pipeline, valves on the branches can be used. In the absence of both those and other valves, it is necessary to weld a temporary air fitting Dy=mm and a fitting for draining the flushing water. On pipelines with a diameter of up to 200 mm, the drain pipes must be at least Dy = 50 mm, with a diameter of Dy = mm - Dy = 100 mm, and with a diameter of 500 mm or more - Dy = 200 mm.

The water supply is carried out by a make-up pump through the main pipelines, and the water must pass into the washed area from the compressed air supply side.

For flushing, plumbing, network and technical water. Washing areas is carried out in the following order:

1) fill the washed area with water and with the help of a make-up pump and keep the pressure in it no more than 4 atm.

2) open the drain valve.

3) open the compressed air valve.

Incoming compressed air with water it moves at high speed, taking with it all the contaminants into the drainage.

Rinsing is carried out until the outgoing water is clean.

When flushing, the pressure of the flushing water at the beginning of the section should be close to 3.5 atm, since more high pressure creates voltage for the operation of the compressor, which usually operates with a pressure close to 4 atm.

The correct ratio of the amounts of water and air supplied to the pipeline is checked by the mode of movement of the mixture.

Normal is considered such a mode of movement of the mixture, which is accompanied by jolts and slips alternately of water and air.

Appendix a

INSTRUCTIONS

for flushing heating systems with a hydropneumatic method

(proposed option)

Flushing scheme



1,2,3,4 valves;

Required to install:

1. valve dy=25 - network water supply;

2. check valve dy=25;

3. valve dy=32 - water-air supply to the heating system;

4. check valve dy=25;

5. valve dy=25 - air supply;

6. valve dy=25 - discharge into the drain, to the street;

7. fitting for the valve dy=25, 32, 25;

Before flushing the local heating system, the following must be done:

1. Insert fittings for valves dy=25, 32, 25, as shown in the diagram;

2. Assemble the flushing circuit with valves and check valves;

3. After flushing the heating system, close the fitting (11).

Procedure for flushing the system.

1. Close valves 3 and 4 on the thermal input;

2. Fill the system with water through valves 5 and 7 (it is desirable that the system stand with water for at least 5 days before flushing). During filling with water, it is necessary to open the air vents. After filling the system, close the air vents;

3. Start the compensator, open the drain valve 10 and open the valve 9 to supply air;

4. Flushing should not be carried out for the entire system at once, but separately for groups of risers (2 - 3 risers), while the remaining risers must be turned off;

5. Flushing should be carried out until clean water from the drain valve.

Note:

Washing can be done:

a) continuously with a constant supply of water, air and discharge of the mixture;

b) Periodically - with periodic water supply and mixture discharge.

With regard to existing thermal inputs, the water-air supply assembly can be changed.

Individual tests of electrical equipment are carried out:

  • Setting parameters, protection settings and equipment characteristics, testing control, protection and signaling schemes.
  • Inspection and testing of cooling systems and on-load tap-changers of transformers, protection devices, automation and equipment control.
  • Testing of electrical equipment for Idling.

Maintenance of electrical equipment at the third stage is carried out by the customer, who ensures the deployment of operating personnel, assembly and disassembly of electrical circuits, and also carries out technical supervision of the state of electrical equipment. After the completion of individual tests, the electrical equipment is considered accepted for operation.

Commissioning program for electrical equipment

List of commissioning works working documentation, specifications, standards for individual units, mechanisms and machines for preparing equipment for acceptance and testing. During the complex testing, which lasts 72 hours, adjustment, verification, and provision of interconnected operation of the devices at idle with their transfer under load and output to the operating mode are carried out. The execution program and the composition of the above operations are brought into line specifications, safety, fire safety and labor protection rules.

The program of the commissioning

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Certificate of completion of commissioning

PREPARATION OF TECHNICAL REPORTS ON COMPLETED START-UP WORKS A technical report is a mandatory document reflecting technical condition installed equipment. The technical report should contain information of a purely technical nature, which are of interest at the time of putting the facility being adjusted into operation to assess the condition of the equipment, as well as the normalization of the measurements required during repeated routine and extraordinary operational checks of equipment, mechanisms and equipment. automatic devices to compare the results obtained. The main part of the technical report is the commissioning and testing protocols.
The protocols are filled out on the basis of the measurements carried out in the process of commissioning by the persons performing these measurements, signed by them.

How is the commissioning program compiled and what does the commissioning program include? The commissioning program is a document that clearly outlines the entire list of actions that will be carried out by the responsible organization. On the net, you can see discussions about whether it is worth including a commissioning methodology in the Program or whether it should be drawn up as a separate document. There are no clear requirements regarding this, so everything here depends on the agreements of the parties.

A sample for each specific situation can be easily found on the Internet. The program is drawn up and approved by a representative of the commissioning company and agreed by the customer, the signatures and seals of the parties are put in the header of the document.

Report on the commissioning of electrical equipment

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The following sections follow (as an example, let's take the preparation of a hotel heating system):

  • General provisions that describe for which object the Program is being approved, the availability of special permits for test participants, a list normative documents on which the manipulations are based.
  • The procedure for organizing and carrying out the main adjustment actions. The final task is set - to provide conditions for a uniform supply of coolant to the heating system. After that, all the manipulations that need to be carried out and a list of necessary devices are briefly described.
  • Adjustment goals.
    The parameters that must be achieved after completion of all work are described in detail (required temperature characteristics and boundary deviations, uniform distribution of the coolant, permissible heat losses).

Report on the commissioning of electrical equipment

The highest level of knowledge of the employees of ELMO LLC, who carry out the indicated operations and test the mechanisms, their experience, the impeccable quality of installation, allow us to transfer objects completely ready for work to the client. And also guarantee their long and uninterrupted operation. Our employees take an active part in seminars, thereby improving their skills in their chosen field of activity.

Commissioning works have a wide list. Let's name the following items: debugging of thermal mechanical, boiler, gas, heating, ventilation, sewer systems, instrumentation and control systems, security and fire alarm devices. The main task of commissioning is to check the operability and efficiency of systems in various modes.

This testing should be carried out by highly qualified specialists who know all the standards and guests. Qualitatively conducted tests will ensure the safety of future or current residents. The professionals of our company perform these processes for absolutely all items related to electricity, as well as any complexity.

Procedure for commissioning of electrical equipment How is commissioning carried out? Our company offers you high-quality and reliable commissioning of electrical equipment. This concept includes checking the parameters of electrical installations in accordance with existing standards and the project, setting up devices and their comprehensive testing.

Commissioning The final stage after the installation of equipment or repair of a structure before its commissioning are commissioning works. These are activities that are based on testing building components and installed systems, this is a test of serviceability and that all objects comply with the requirements and norms, documents and projects. According to the design plans of the premises, commissioning is needed in order to launch fire alarm, for the installation of electrical equipment, ventilation and heating.


Carrying out these works must necessarily take place in accordance with the design plan of the structure. Without going through this process, the systems should never be put into operation. To very important points when carrying out this procedure is to test the main objects of the system under a very high load, as well as under critical conditions.
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TECHNICAL REPORT

on the commissioning of a cascade system installed at:

____________________________________

SOOO director

Ch. SOOO engineer

Minsk, 2007

General information.

The cascade system is intended for the preparation of hot water used in closed heating systems with forced circulation of the coolant and for the preparation of domestic hot water using a storage or high-speed boiler in gasified buildings with electricity supply and central or individual water supply. The cascade system includes two or more wall-mounted condensing heaters with a thermal power of 50 kW with a closed combustion chamber, which provide water heating for two heating circuits and one hot water circuit in a storage boiler.

The distribution of the total heat output to several devices guarantees the supply of heat even in the event of a failure of a single device of the cascade system.

The cascade system of heating devices provides greater gas savings compared to a single boiler of the same capacity. This is achieved by automatic selection of the necessary thermal power by the cascade to provide the specified temperature parameters.

Installation, connection, commissioning and testing of the apparatus were carried out according to the project, developed in accordance with the current norms and rules, and approved in the prescribed manner in compliance with the Construction Norms and Rules (SNiP) and the Building Regulations of Belarus (SNB): SNiP 2.04. 05-91 "Heating, ventilation and air conditioning", SNB 4.03.01-98 "Gas supply", SNB 3.02.04-03 "Residential buildings", SNiP 2.08.02-89 "Public buildings", "Technical safety rules in the field of gas supply Republic of Belarus” and other applicable regulatory documents.

The installation of the cascade system was carried out in accordance with the project developed by: _____________________________________________________________.

Start-up and adjustment works were carried out by the service department of JLLC in accordance with the contract: _______________________________________________________.

Methodology for commissioning

cascade system.

The combustion regime was adjusted by adjusting the gas valves in the boilers of the cascade system. At the same time, the maximum and minimum levels of gas flame modulation were set, taking into account the power of the boilers, the power consumed, the gas pressure in the network, the thermal insulation properties of the building, and the vacuum in the flue.

During commissioning, the necessary measurements were carried out to determine the main indicators of boiler operation:

Gas pressure in the network;

Maximum working gas pressure in the boiler;

Minimum operating gas pressure in the boiler;

Gas pressure during ignition;

Vacuum in the gas duct;

Outside air temperature;

Water pressure in the heating system.

Measurements were made at different loads during the operation of each boiler and the entire cascade system as a whole. The duration of measurements and settings for each boiler was 30 minutes.

Programming the cascade control unit

The control unit is designed for program control of a heating and hot water supply system containing up to two heating circuits, a boiler water heating system.

The block provides the following modes of operation:

Auto mode;

Mode of continuous heating and hot water supply;

Economy mode;

Frost protection mode;

Summer mode.

Each heating circuit is controlled by a sensor installed in the heated room or indirectly by two sensors: a sensor in the heating circuit and an outside air sensor.

Programming was carried out when working in automatic mode, i.e. heating control ensures that two set temperatures are maintained according to the established schedule. During the day, 3 periods of time for maintaining a comfortable temperature were set, and the rest of the time, the set reduced temperature is maintained. For each day of the week, their periods of maintaining a comfortable temperature were set. Three time periods for hot water preparation are set, which ensures the preparation of water of a given temperature at a set time (in the case of installing a DHW system). Programmed automatic switching on and off of circulation pumps, forced circulation mode for 5 minutes.

1. Technical report- a mandatory document reflecting the technical condition of the installed equipment, grounding devices, automation, protection devices, control and signaling devices of the facility being adjusted at the time of its commissioning,

2. With a new (primary) inclusion, compliance with the design, serviceability and correctness of the adjustment of each element should be checked, as well as the specified settings and modes, the operation of the device as a whole and the reliability of its action on the actuators and mechanisms, with the obligatory reflection of the work performed in setup protocols.

3. The technical report must contain information purely technical that are of interest at the time of commissioning of the facility being adjusted for condition assessment equipment, as well as normalized measurement values required for repeated regular and extraordinary operational checks equipment, mechanisms and automatic devices, for comparison the results obtained.

4. The main part of the technical report - commissioning and testing protocols. The protocols are filled out on the basis of made measurements in the process of commissioning persons performing these measurements.

5. Technical report is prepared on time no later than 10 days after completion of work, check the production and technical department of the commissioning unit, reproduce in triplicate; approves the chief engineer(head of section).

6. Approved technical reports no later than one month from the moment of completion of commissioning works at the facility should be transferred to the customer parent organization and department archive, carried out commissioning.

7. Regardless of the purpose, size and departmental affiliation of the facilities where commissioning was carried out, the technical report includes the following:

1) title page;

2) annotation;

The annotation reflects:

a) the name of the commissioning facility, its departmental affiliation and location;

b) by the forces of which unit (indicating the size of the group, the name of the leader, work) and in what period the work was carried out to adjust the facility;

c) a brief description of the equipment involved in the technological process and its technical condition.

3) measurement and test reports equipment, automatic devices, separate independent elements, control equipment, signaling, etc.

in the following order: a) technological equipment,

b) electrical equipment,

c) other installations and apparatus;

4) a list of instrumentation used during commissioning and complete test devices;

5) changes made;

In step about the changes information is given about fundamental changes technological and electrical schemes of the project produced during the commissioning process. In this case, it appears protocol of approval of the changes made signed by representatives of the customer and the design organization. Correction minor design and installation errors in this paragraph not reflected.

6) conclusion;

7) applications.

The appendices contain an act of complex testing of mechanisms and a protocol for agreeing on changes to the project, if any.

8. After commissioning individual installations(additional equipment, individual devices, automation panels) no technical report.

9. All copies of the report must have authentic signatures of persons, who approved and signed it (on the title page), and commissioning print.

During the implementation of many projects, capital construction or reconstruction of buildings and structures is carried out with the installation of new equipment or specialized processes. Such works include the installation of fire extinguishing systems, power supply, air conditioning, ventilation, fire alarms. All of them require commissioning, for this, a commissioning program has been drawn up more and more often lately.

What is NDP and why they are carried out

According to SNiP, commissioning is a set of activities that are carried out during the preparation for the implementation of integrated testing and individual testing of installed equipment. This includes checking, testing and adjusting equipment to achieve design parameters.

The performance of all these manipulations is usually carried out on a contractual basis by specialized organizations that have the necessary permits and a staff of qualified specialists. The necessary conditions for their activities at the site (industrial sanitation, labor safety) are organized by the customer, who also pays for commissioning at the expense of the general estimate for putting the facility into operation. All operations must be carried out by instructed and certified for each specific case by the personnel of the commissioning organization under the supervision of a responsible representative on the part of the customer.

There are two main stages in the commissioning activities:

  • Individual tests are actions that are designed to ensure the fulfillment of the requirements that are provided for by the technical specifications, standards and working documentation for testing units, machines and mechanisms. The purpose of individual tests is to prepare for complex testing in the presence of a working commission.
  • Complex tests are actions carried out after the acceptance of the mechanisms by the working commission, and directly the complex testing itself. At the same time, the interconnected joint operation of all installed equipment is checked at idle, then under load, after which the technological regime provided for by the project is reached.

Although this is not prescribed by law, in recent years, more and more often, the customer requires that a commissioning program be drawn up for testing work. This gives confidence that not a single nuance will be missed, and the operation of all systems will comply with the approved standards and project documentation.

How is it compiled and what does the commissioning program include?

The commissioning program is a document that clearly outlines the entire list of actions that will be carried out by the responsible organization. On the net, you can see discussions about whether it is worth including a commissioning methodology in the Program or whether it should be drawn up as a separate document. There are no clear requirements regarding this, so everything here depends on the agreements of the parties. A sample for each specific situation can be easily found on the Internet.

The program is drawn up and approved by a representative of the commissioning company and agreed by the customer, the signatures and seals of the parties are put in the header of the document. The following sections follow (as an example, let's take the preparation of a hotel heating system):

  • checking the correctness of installation, readiness and serviceability of equipment in visual mode (control devices, valves, filling the system with water), following the results, a defective list is compiled;
  • commissioning tests in operating conditions, balance experiments (setting optimal modes, testing valve control in manual and automatic modes, checking automation settings, identifying shortcomings and working out proposals for their elimination), the result is an act of individual tests;
  • comprehensive testing (72 hours of continuous operation for all main equipment, 24 hours for heating networks), its beginning is the time when all systems are started at maximum load.

Some companies document all activities related directly to the preparation and testing of devices in a separate document - the Commissioning Methodology, which comes as an addition to the Program. In the Program, they include more general things of an organizational nature. That is, there is an actual division of the entire complex of works into organizational, legal and technical components. However, the Methodology is often an integral part of the main body of the approved Program.

An integral part of the Program may be such additional documents:

  • passports of ventilation, heating and hot water supply systems, as well as individual nodes of their connection;
  • the procedure for preparing and subsequent commissioning with a list of all operations, their start and end times;
  • list of stationary and portable measuring instruments (pressure gauges, thermometers, etc.);
  • list of control and stop valves, equipment (pumps, valves, heat exchangers, filters);
  • list of control points and measurement protocol for each of them;
  • a list of parameters that require clarification and adjustment (humidity and air temperature, pressure in pipes, coolant flow rates);
  • a method for measuring heat losses by building structures (a special act is drawn up and a certificate is issued).

After the completion of all commissioning works, complex testing and regime tests, a commissioning report is drawn up with the relevant annexes (a list of mechanisms and equipment on which adjustment and testing was carried out).

The technical report of the involved specialized organization issues, as a rule, within one month.