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

“AGREED” / “APPROVED”

TECHNICAL REPORT

for operational and adjustment work at the facility, an automated hot water boiler house with a capacity of kW, located at:

St. Petersburg 20__

1. INTRODUCTION

Operational and adjustment work of the boilers was carried out on an automated gas hot water boiler house with a capacity of kW, intended for heat supply to a building located at the address: St. Petersburg. Regime and adjustment work was carried out by a company that has the appropriate permits. Operational and adjustment work included operational and adjustment tests of boilers together with main and auxiliary equipment, testing of all technological installations, auxiliary equipment, instrumentation and automation with setting up and testing of protection sensors, safety and regulation automation and alarm systems.

Regime and adjustment work was carried out in the period from “__” ___ 20__ to “__” ___ 20__.

The goal of the work was to perform routine adjustment of boiler room equipment and achieve highest performance efficiency and reliability of operation.

Regime and adjustment work was carried out on boiler room equipment:

• security automation;
• boiler automation;
• automatic gas burners;
• thermal conditions of boilers;

The following specialists took part in the commissioning work:

2. BRIEF TECHNICAL DESCRIPTION OF THE OBJECT

2.1 PURPOSE AND PRINCIPLE OF OPERATION

2.2 STRUCTURE AND PRINCIPLE OF OPERATION OF BOILERS

2.3 PRINCIPLE OF OPERATION OF THE BURNER

2.4 BURNER SPECIFICATIONS

2.5 TECHNICAL CHARACTERISTICS OF PUMPS

2.6 AUTOMATION OF SAFETY AND CONTROL OF THE BOILER ROOM

2.6.1 OPERATING AND EMERGENCY ALARMS.

2.6.2 DISPATCHING

3. TEST CONDITIONS

Commissioning tests of the boilers were carried out under normal operating conditions.

In progress preparatory work Before the tests, the technical condition of the boiler equipment was checked.

Before starting the balance experiments, rough experiments were carried out in order to identify critical excess air at each load. To construct boiler characteristics that ensure the reliability of measurement information, two load modes were tested on the boilers, and each experiment was duplicated to eliminate errors.

The load was generated by the heating and hot water supply system of the facility.

The main fuel consumption was measured using a meter installed at the gas inlet into the boiler room, adjusted by temperature and pressure on the controller.

Automatic safety ensures that the fuel supply to the burner is stopped when the limit values ​​of the following parameters are reached:

• differential air pressure on the burner fan;
• water pressure in the boiler;
• gas pressure in front of the cat;
• temperature of water leaving the boiler;
• burner flame goes out;
• malfunction of protection circuits, including loss of voltage;
• fire alarm in the boiler room;
• gas pollution in the room.

4. METHOD OF THERMAL ENGINEERING CALCULATIONS AND MEASUREMENTS

Operational and adjustment tests are carried out according to the methods of Prof. M.B. Ravich, which provides for a set of measurements and calculations necessary to assess the efficiency of boilers. When taking measurements, stationary measuring instruments and portable devices.

During testing, the following measurements are performed:

• gas consumption;
• water pressure at the inlet and outlet of the boiler;
• temperature of gas and air for combustion;
• water temperature before and after the boiler;
• temperature and composition of gases behind the boiler;
• pressure in the gas path of the boiler.

5. ANALYSIS OF THE RESULTS OF WORK COMPLETED

5.1 BOILER OPERATION PARAMETERS

5.2 WEIGHTED AVERAGE EFFICIENCY “Gross” and “Net” BOILER HOUSE

Boilers operate stably and economically at given loads.

The economic indicators of boiler operation in the selected modes practically do not differ from the manufacturer’s passport data.

For uninterrupted heat supply to consumers and maintaining economical operation boilers and auxiliary equipment, the following recommendations must be followed:

— Operate boilers according to operating schedules.

— Monitor the operation of boiler room auxiliary equipment.

— Monitor the technical condition and quality of operation of safety automation systems and regulation of basic technological processes.

— Systematically identify and immediately eliminate areas of water loss through leaks in fittings, seals and flange elements.

— Monitor the condition of the thermal insulation of boilers and its pipelines.

— Periodically carry out operational adjustments of burner devices in accordance with the requirements of regulatory and technical documentation.

APPLICATIONS

1. Permitting documentation

ANNOTATION

The technical report contains materials from the commissioning and operational adjustment work carried out with the steam boiler DE-6.5-14 GM in the heating and production boiler house of the MUP Manufactory factory (city, st., 9).

During the commissioning, the operation of the equipment was checked, automation equipment was configured, and optimal combustion modes were found when the boiler was operating on backup fuel - diesel.

A conclusion is made about the possibility of operating the boiler unit in accordance with the design and regulatory requirements. technical documentation.

The report contains 66 pages, 14 graphs, 9 tables.

Introduction……………………………………………………………………...………...……..
Brief technical specifications equipment…………..…….……
Description of work performed…………………………………….………..
Layout of measuring instruments on the boiler …………………………..
Table of boiler parameters measuring instruments……………………………
Summary table of measurement and calculation results….…...…….……….
Steam boiler operating chart……………………..………………………...
Graphs of boiler parameters.....…………………………………………………………
Operational regime map………………………...………………………..
Map of automatic safety settings …………………………………..
Conclusion …………………………………………………………………..
Bibliography ……………………………………………...…..………
Application		Commissioning and commissioning program
Application		Methodology commissioning works
Application		Fuel quality certificate
Application		Protocol for setting up security automation sensors
Application		Safety automatic activation test protocol
Application		Certificate of comprehensive testing of the boiler unit
Application		Certificate of completion of adjustment work
Application		Instructions for starting (igniting) the DE-6.5-14 GM boiler
Application		Tables for CL switchboard regulator settings
Application		Electrical circuit diagrams

INTRODUCTION

The boiler room was installed in one of the existing factory buildings. A steam boiler DE-6.5-14 GM is installed in the boiler room (in accordance with the project, another boiler must be installed - DE-4-14 GM). The purpose of the boiler room is to supply steam for the technological needs of the factory, work in a closed water heating system according to the schedule “95-70”.

To control the boiler when operating on diesel fuel, a new automation panel was designed and installed.

According to agreement No., concluded between the municipal unitary enterprise “manufactura” and LLC “stroy”, the following work was carried out in this boiler room: startup and adjustment of boiler control devices, startup and operational adjustment of a diesel fuel boiler.

The technical competence of Stroy LLC and its compliance with industrial safety rules are confirmed by the certificate of the State Mining and Technical Supervision of Russia (reg. No.).

Beginning of work:	August 200,
ending:	October 200
Brigade composition:		Lead Engineer,
		Lead Engineer,

BRIEF TECHNICAL CHARACTERISTICS OF THE EQUIPMENT

Parameter name	Magnitude
Steam boiler
	DE-6.5-14 (serial number, registration number)
Estimated steam capacity, t/h
Estimated steam pressure g., kgf/cm 2
Steam volume at max. level, m 3
Water volume at max. level, m 3
radiation
convective
Economizer
Number of columns, pcs.
Water volume, m3
Heating surface area, m2
Limit slave water pressure, kgf/cm 2
Firebox
	chamber
Firebox volume, m 3
Burner
	mixing - GM-4.5
Nominal thermal power, MW
Davl. fuel oil in front of the nozzle., MPa
Number of nozzles, pcs.
Blower fan
Rotation speed, rpm
Quantity, pcs.
Smoke exhauster
	VDN-11.2-1000
Productivity (=1.18 kg/m 3), m 3 /h
Total pressure (=1.18 kg/m 3), daPa
Electric motor power, kW
Rotation speed, rpm
Quantity, pcs.

Table continuation

Feed pumps
Feed, m 3 / h
Pressure, m water.
Electric motor power, kW
Rotation speed, rpm
Quantity, pcs.
Art.
		Diesel fuel pumps
Feed, m 3 / h
NMSh 2-40-1.6/16
Electric motor power, kW
Rotation speed, rpm
Quantity, pcs.
Pressure, kgf/cm 2
Diesel fuel containers
Volume, m3:	Water treatment

two-stage Na-cationization, deaeration

Boiler DE-6.5-14 GM (manufacturer - Biysk Boiler Plant) - double-drum steam. The side walls of the boiler are thermally insulated with lightweight lining. The boiler is designed to produce saturated steam. The evaporation scheme is single-stage.

A gas-oil burner GM-4.5 (Perlovsky Power Equipment Plant, Mytishchi) is attached to the front of the boiler.

The burner nozzle is steam-mechanical. In addition to the main nozzle, the nozzle assembly also includes a replaceable nozzle installed at an angle to the burner axis. The replacement nozzle is turned on for a short time, necessary for cleaning or replacement.

The air guide device contains an air box, an axial swirler with profile blades and a cone stabilizer. A small part of the air passes through a perforated sheet (diffuser) along the axis of the burner to cool the nozzle.

Diesel fuel is supplied to the boiler room by gear pumps located in a separate pumping building (pavilion). The fuel not consumed by the burner is returned to the tank through the return pipeline.

In the burner, diesel fuel is atomized (without the use of steam), ignited by an ignition device (powered by natural or bottled gas), mixed with air supplied by a blower fan, and burned. The combustion products, having given up some of the heat in the firebox, pass through the convective surfaces of the boiler, then through the economizer, and pass into the chimney.

The MINITERM 300.01 devices (Moscow Thermal Automation Plant) located on the boiler control panel support

water level in the boiler drum (primary converter – “Sapphire” (06.3) kPa, (05) mA, electric actuator at the control valve – MEO-100/25-0.25)

and a given vacuum value (primary transducer - “Sapphire”

(-0.220.22) kPa, (05) mA, the electric actuator at the guide vane of the smoke exhauster is MEO-100/25-0.25).

The “KL” panel performs semi-automatic ignition of the boiler according to an algorithm at specified time intervals.

The “KL” switchboard performs an automatic emergency stop of the boiler (or prohibits ignition) for the following reasons:

emergency deviation of the water level in the upper drum of the boiler,

emergency reduction of vacuum in the furnace,

emergency reduction of air pressure in front of the burner,

the torch goes out (or does not appear during ignition),

emergency reduction of diesel fuel pressure after the valve,

turning off the power supply to the “old” control panel and/or the “CL” panel itself.

In case of emergency deviations of parameters, the siren is automatically turned on.

In the boiler room, in two places in the hall, alarms for maximum concentrations of carbon monoxide in the air are installed - SOU-1.

When the maximum permissible concentration of carbon monoxide in the air of the boiler room, called “threshold 1,” is exceeded, the red indicator on the body of the SOU-1 alarm begins to flash. When the concentration “threshold 2” is exceeded, the red indicator starts to glow continuously and an intermittent sound signal sounds.

A measuring system was installed in the boiler room to take into account the steam consumption from the boiler and the steam consumption going to production. The complex includes restriction devices, pressure and pressure difference sensors “Sapphire”, thermal resistance TSM, meter VST 25, heat calculator SPT961 (NPF “Logika”, St. Petersburg).

To take into account the heat supply for heating, a measuring complex was installed, consisting of electromagnetic flow transducers IP-02M (Etalon plant, Vladimir), a VST 25 meter, KRT-1 pressure sensors, thermal resistances, as well as a TERM-02 heat meter.

DESCRIPTION OF WORK PERFORMED

Regime and adjustment work was carried out according to the program (Appendix A).

A preliminary inspection of the boiler room equipment was carried out, its readiness for commissioning was determined, the availability of control devices, verified measuring instruments, as well as the necessary tie-ins and impulse lines was taken into account. Based on the results of the inspection, a list of defects was compiled and submitted to the operating organization.

The reconstruction project provides for control of the boiler from the cable line panel together with the “old” boiler control panel. To carry out commissioning work on diesel fuel, it was decided to install an electric key on the “old” boiler control panel GAS-DIESEL FUEL to switch control from the BUK-1 device.

During the setup process, all boiler devices were tested,

the operation of measuring instruments was checked,

control and alarm systems have been established,

combustion modes are configured.

Regime adjustment was carried out using summer diesel fuel, in accordance with the methodology (Appendix B).

During the process of operational adjustment work, in order to determine the optimal excess air, the composition of the exhaust gases and their temperature were monitored using a portable gas analyzer DAG-500. The tests were carried out under stabilized boiler operation conditions. The boiler parameters were maintained at the design level and allowed by the manufacturer’s operating instructions. For each load, 4-5 regime experiments and 1-2 balance experiments were carried out, not counting the estimated ones. The duration of one regime experiment is (11.5) hours. The duration of the balance experiment is (11.5) hours. The duration of the estimated experiment is up to 1 hour. The intervals between experiments at different boiler loads were at least an hour.

Determination of the optimal air flow for each load was made by reducing the air supply and finding the point of underburning. Then the air supply was increased until the oxygen concentration in the boiler exhaust gases was within (46)%.

The fuel pressure in front of the injector and air pressure were adjusted manually. Parameter measurements were carried out with verified instruments.

The boiler efficiency was determined using reverse balance.

Nominal value of heat loss in environment boiler adopted according to the schedule “Determination of heat losses to the environment of steam block-transportable boilers”.

Calculation of heat losses with flue gases was carried out according to the method described in.

As a result of the operational adjustment work carried out, the optimal excess air was determined at four boiler loads.

The optimal parameter values ​​are entered into the boiler operating maps.

Based on the test results, the boiler efficiency was determined.

Upon completion of commissioning work, a comprehensive testing of the boiler and auxiliary equipment was carried out within 72 hours (see Appendix E).

Safety automation settings mapsteam boiler DE-6.5-14 GM

Parameter name	Magnitude	before turning off the diesel fuel,
Water level in the boiler drum, deviation from the mean
Vacuum in the boiler furnace minimum	1 daPa(g)
Air pressure in front of the burner minimum
Diesel fuel pressure after the valve is minimal
Loss of flame

Note. Less than 2 seconds after the parameter reaches the emergency level, the corresponding light display should automatically turn on, and the electric bell of the boiler control panel and/or the siren of the CL panel should ring.

CONCLUSION

As a result of the work performed, optimal combustion modes were found and the means were put into operation automatic regulation and control. During the tests it was determined that diesel fuel the boiler and its auxiliary equipment can operate stably and economically.

In order to increase operational convenience in the boiler room, increase reliability, efficiency and safety, it is recommended:

install in the steam pipeline used for the technological needs of the factory a reducing valve (reducer), which automatically maintains the specified steam pressure after itself,

connect proportional safety valves to the steam lines of steam-consuming machines (before the shut-off device along the steam flow),

install frequency regulators on the electric drives of the feed pump and smoke exhauster, maintaining the water level in the boiler drum and the vacuum in the furnace, respectively,

cover the chimney drain pipe with thermal insulation,

Write their installation numbers on the fuel containers (at the ends above the drain valves).

BIBLIOGRAPHY

Boiler room with two boilers MUP “Manufactory”.

Working draft. JSC “Institute” – bbbbbbbbbb, 200b

Reconstruction of the automation system of the boiler DE-6.5-14-GM in the boiler room of the MUP “Manufactory”.

Working draft. Stroy LLC – bbbbbb, 200b

Rivkin S.L., Alexandrov A.A. Thermophysical properties of water and water vapor. M.: Energy. - 1980

Guidelines for startup, commissioning, and thermal testing of boiler installations using gaseous and reserve fuels. "bbbb" LLC.

Registered by the Gosgaznadzor inspection bbbbbgosenergonadzor 28.01.0b, No. bbb – NR Pekker Ya.L. Thermal calculations

according to the given fuel characteristics.

Generalized methods. M.: Energy, 1977

Yankelevich V.I. Adjustment of gas-oil industrial boiler houses. - M.: Energoatomizdat, 1998 - 216 pp., ill.

PROTOCOL

settings of automatic safety sensors for steam boiler DE-6.5-14 GM	in the boiler room of MUP “Manufactory”	Trigger reason actuation	Sensor type
or device Factory number		Rising water level in the upper drum of the boiler
Lowering water level Factory number
Decrease in vacuum	0.5 kgf/m 2	pressure sensor DNT-1 (-10÷100) kgf/m 2
Decreased pressure air in front of the burner		pressure switch DUNGS LGW 10 A2 (0÷10) mbar	no number
Decreased pressure diesel fuel after valve		pressure meter DD-1.6 (2÷16) kgf/cm 2
Flame going out		signaling device

Generalized methods. M.: Energy, 1977

checking the operation of the automatic safety system of the DE-6.5-14 GM steam boiler

PROTOCOL

settings of automatic safety sensors for steam boiler DE-6.5-14 GM	Time until fuel supply stops or response threshold
The water level in the boiler drum increases
The water level in the boiler drum decreases
Decreased vacuum in the furnace	less than 10 seconds
Air pressure in front of the burner decreases
Diesel fuel pressure after valve demotion
Burner flame disappears	less than 2 seconds
Turning off the power supply to the boiler	less than 2 seconds

Light and sound alarms are activated.

Good afternoon, our project organization performed design and commissioning of the ventilation system at the research institute.

The report can be found below the cut.

VENTILATION SYSTEM COMMISSIONING REPORT

1. General information

This technical report contains the results of testing and adjustment of automation systems ventilation units P1-V1, P2-V2, P3-V3, P4-V9, V4, V5, V6, V7, RV1, mounted in housing No. 5

The work was carried out according to the program given in this report. During the work process, automation objects, design documentation were analyzed, and quality checks were carried out installation work and technical condition of automation equipment, a package of application programs for the microprocessor controller was developed, and adjustments were made to the control loops.

Based on the results obtained, conclusions are formulated and recommendations for the operation of the equipment are developed.

2. Work program

1. Analysis of design and technical documentation, requirements of manufacturers of automation system equipment.

2. Familiarization with the operating features of the equipment (start-up and shutdown conditions, equipment behavior under variable conditions, the effect of protection, the main disturbances affecting the operation of the equipment).

3. Development of a methodology for calculating quality indicators of control circuits.

4. Development of control algorithms for technological equipment of ventilation systems.

5. Development of a package of application programs.

6. Checking the correct installation of automation equipment and its compliance with the project, identifying deficiencies and installation defects.

7. Checking the technical condition of automation equipment.

8. Carrying out autonomous testing of automation equipment.

9. Testing, debugging and adjustment of application programs based on the results of autonomous adjustment of systems.

10. Comprehensive testing of the operation of ventilation units, coordination of input and output parameters and characteristics.

11. Analysis of test results and development of recommendations for the operation of equipment.

12. Preparation of a technical report.

3. CHARACTERISTICS OF AUTOMATION OBJECTS

The object of automation is the technological equipment of ventilation units P1-V1, P2-V2, P3-V3, P4-V8, V4, V5, V6, V7, RV1.

Ventilation units P1-V1, P2-V2 are designed to maintain production premises air environment with the following parameters:

· temperature ……………………………. +21±2° C;

· relative humidity……………. 50%±10%;;

· cleanliness class ….……………….……….P8.

Indoor air purity is not standardized.

Ventilation units P1-V1, P2-V2 are made according to a scheme with partial redundancy by the P2-V2 installation of the P1-V1 installation in the event of its stop or failure.

The P1-B1 installation is carried out according to a direct-flow scheme. The installation includes:

· intake air valve;

· filter section;

· first heating section;

· irrigation chamber;

· cooling section;

· second heating section;

· air valve supply air;

· air release valve.

The P2-V2 installation is carried out according to a direct-flow scheme. The installation includes:

· intake air valve;

· filter section;

· first heating section;

· irrigation chamber;

· cooling section;

· second heating section;

· supply fan section;

· supply air filter section;

· reserve air valve;

· exhaust fan section;

· air release valve.

The heat supply to the air heaters of the ventilation units P1-B1, P2-B2 is provided from the existing heating point, the coolant for the ventilation system is district heating water with parameters of 130/70°C in the winter (heating) period. IN summer period the first heating circuit is not used. To supply heat to the second heating air heater in the summer, it is used hot water with parameters 90/70°C (heat source – electric heater).

The control units for the first and second heating air heaters are equipped with mixing pumps. To change the coolant flow through the first heating air heater, a two-way control valve is provided. To change the coolant flow through the second heating air heater, a three-way control valve is provided.

Cooling supply for coolers of ventilation units P1-V1, P2-V2 is provided from refrigeration machine. A 40% ethylene glycol solution with parameters 7/12°C is used as a coolant. To change the coolant flow through the air coolers, three-way control valves are provided.

The P3-V3 installation is carried out according to a direct-flow scheme. The installation includes:

· intake air valve;

· filter section;

· supply fan section;

· exhaust fan section;

· air release valve.

The P4-V8 installation is carried out according to a direct-flow scheme. The installation includes:

· intake air valve;

· filter section;

· supply fan section;

· exhaust fan section;

The heat supply to the air heaters of the P3-V3, P4-V8 ventilation units is provided from the existing heating point; the coolant for the ventilation system is district heating water with parameters of 130/70°C during the winter (heating) period. In summer, the heating circuit is not used.

The air heater control units are equipped with mixing pumps. To change the coolant flow through the air heater, a two-way control valve is provided.

Installations B4, B5, B6, B7 are made according to a direct-flow scheme. The installations include:

· exhaust fan section;

· air release valve.

The PB1 installation is carried out according to a recirculation scheme. The installation includes:

· intake air valve;

· supply fan section;

· recirculation air valve.

4. Characteristics of automation systems

To solve the problems of automation of installations P1-V1, P2-V2, P3-V3, P4-V8, V5, V6, V7, RV1, a complex was used technical means manufactured by Honeywell based on Excel 5000 series input/output conversion modules and Excel WEB series microprocessor controller. The controller of this series is freely programmable, provided with hardware and software for dispatching.

To organize the exchange of information between the controller of ventilation units P1-V1, P2-V2, P3-V3, P4-V9 and the dispatch computer, the local network Ethernet with BACNET communication protocol.

To organize the exchange of input/output conversion modules and the controller, a local LON network is provided.

To control the ventilation unit, manual and automatic modes are provided.

Manual mode is used to test equipment during commissioning.

Control in automatic mode is carried out according to controller commands.

The process equipment of ventilation units P1-V1, P2-V2, P3-V3, P4-V8 is controlled from the SHAU-P control cabinet.

To solve automation problems, a complex of Honeywell technical tools was used, which includes:

· microprocessor controller Excel WEB C1000;

· XFL 822A analog output conversion modules;

· XFL 821A analog input conversion modules;

· digital output conversion modules XFL 824A ;

· digital input conversion modules XFL 823A ;

ventilation unit P1-V1:

Air after the first heating air heater LF 20 (TE P1.1);

Air after the cooling circuit T7411A1019 (TE P1.4);

Return water after the first heating air heater VF 20A (TE P1.2);

Return water after the second heating heater VF 20A (TE P1.3);

Supply air H 7015В1020 (MRE /TE P1);

Extract air H 7015B1020 (MRE /TE B1);

flow rate sensors:

Supply air IVL 10 (S E P1);

Heating circuits ML 7420A 6009 (Y P1.2), M 7410E 2026 (Y P1.3);

Cooling circuit ML 7420A 6009 (Y P1.4) ;

· thermostat for protecting the heater of the first heating circuit from freezing T6950A1026 (TS P1);

· differential pressure sensors-relays on the DPS 200 filter (PDS P1.1, PDS P1.2);

· differential pressure sensor-relay on the supply fan DPS 400 (PDS P1.3);

· differential pressure sensor-relay on the exhaust fan DPS 400 (PDS B1);

· two-position air valve drives S 20230-2POS -SW 2 (Y P1.1), S 10230-2POS (Y B1);

· air valve drive with control signal 0..10 V N 10010 (Y P1.5);

· Frequency converter for changing the rotation speed of the supply fan motor HVAC 07C 2/NXLOPTC 4 (PCh-P1);

ventilation unit P2 -V2:

temperature sensors based on thermal resistances:

Outdoor air AF 20 (TE HB);

Air after the first heating heater LF 20 (TE P2.1);

Air after the cooling circuit T7411A1019 (TE P2.4);

Return water after the first heating heater VF 20A (TE P2.2);

Return water after the second heating heater VF 20A (TE P2.3);

· channel temperature and humidity sensors:

Supply air H 7015В1020 (MRE /TE P2);

Exhaust air H 7015B1020 (MRE /TE B2);

flow rate sensors:

Supply air IVL 10 (S E P2);

· control valve drives with control signal 0..10 V:

Heating circuits ML 7420A 6009(Y P2.2, Y P2.3);

Cooling circuit ML 7420A 6009 (Y P2 .4) ;

· thermostat for protecting the heater of the first heating circuit from freezing T6950A1026 (TS P2);

· differential pressure sensors-relays on the DPS 200 filter (PDS P2.1, PDS P2.2);

· differential pressure sensor-relay on the supply fan DPS 400 (PDS P2.3);

· differential pressure sensor-relay on the exhaust fan DPS 400 (PDS B2);

· two-position air valve drives S 20230-2POS -SW 2 (Y P2.1), S 10230-2POS (Y B2);

· air valve drive with control signal 0..10 V N 10010 (Y P2.6);

· Frequency converter for changing the rotation speed of the supply fan motor HVAC 16C 2/NXLOPTC 4 (PCh-P2);

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

ventilation unit P3-V3:

temperature sensors based on thermal resistances:

Supply air LF 20 (TE P3.1);

Return water after heating coil VF 20A (TE P3.2);

· thermostat for protecting the heating circuit heater from freezing T6950A1026 (TS P3);

· differential pressure sensor-relay on filter DPS 200 (PDS P3.1);

· differential pressure sensor-relay on the supply fan DPS 400 (PDS P3.2);

· differential pressure sensor-relay on the exhaust fan DPS 400 (PDS B3);

· two-position air valve drives S 20230-2POS -SW 2 (Y P3.1), S 10230-2POS (Y B3);

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

ventilation unit P4-V8:

temperature sensors based on thermal resistances:

Supply air LF 20 (TE P4.1);

Return water after heating coil VF 20A (TE P4.2);

· thermostat for protecting the heating circuit heater from freezing T6950A1026 (TS P4);

· differential pressure sensor-relay on filter DPS 200 (PDS P4.1);

· differential pressure sensor-relay on the supply fan DPS 400 (PDS P4.2);

· two-position air valve drive S 20230-2POS -SW 2 (Y P4.1),

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

ventilation unit B4:

· differential pressure sensor-relay on the exhaust fan DPS 400 (PDS B4);

· two-position air valve drive S 10230-2POS (Y B4);

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

ventilation unit B5:

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

ventilation unit B6:

· differential pressure sensor-relay on the exhaust fan DPS 400 (PDS B5);

· two-position air valve drive S 10230-2POS (Y B5);

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

ventilation unit B7:

· differential pressure sensor-relay on the exhaust fan DPS 400 (PDS B5);

· two-position air valve drive S 10230-2POS (Y B5);

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

ventilation unit B8:

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

ventilation unit RV1:

temperature sensors based on thermal resistances:

Supply air LF 20 (TE РВ1);

· air valve drive with control signal 0..10 V S 20010-SW 2 (Y РВ1.1) and N 20010 (Y РВ1.2);

· elements of switching equipment of the control cabinet (control keys, relay contacts and additional contacts of magnetic starters).

The main characteristics of the equipment tested are given in Tables 4.1 and 4.2.

Table 4.1 - Main characteristics of sensors

Measured parameter	Trigger reason	Sensor type	Operating range
Outdoor temperature	AF 20	NTC thermistor, resistance, 20 kOhm at 25ºС	2 0..+3 0 ºС
Air temperature after the first heating circuit of units P1-B1, P2-B2, supply air temperature air installations P3-V3, P4-V8, RV1	LF 20
Air temperature after the cooling circuit of units P1-V1, P2-V2		Pt 1000, resistance, 1000 Ohm at 0ºС	4 0..+8 0 ºС

Continuation of Table 4.1

Coolant temperature after the air heater of the first and second heating of units P1-V1, P2-V2, after the air heaters of units P3-V3, P4-V8	VF 20A	NTC thermistor, resistance, 20 kOhm at 25ºС
Temperature and relative humidity of supply and exhaust air of units P1-B1, P2-B2	H 7015B1020	NTC thermistor, resistance, 20 kOhm at 25ºС; Capacitive type SE 0..10 V	5..95% Rh
Air temperature after the first heating air heater P1-V1, P2-V2, temperature after the air heater of units P3-V3, P4-V8		Capillary
Filter pressure drop	DPS 200	Silicone membrane
Filter pressure drop	DPS 400	Silicone membrane

Table 4.2 - Main characteristics of drives

Managed equipment	type of drive	Control signal	Presence of a return spring	Time full speed opening/closing, s	Working stroke	Torque, Nm
Air valves	S20010 N10010 N 20010	0 ..10V
Control valves for coolant and coolant	ML 7420A6009 ML 7410E2026

Technical descriptions for the installed automation equipment are given in the appendix to the report.

5.Analysis results project documentation and checking the quality of installation work

The automation project for ventilation systems (section of the AOB brand) and installation of automation systems have been completed

The analysis of the design documentation showed that the working drawings were made in accordance with the requirements of the current regulatory documents and technical documentation of equipment manufacturers.

The completed check of compliance of the installation of automation equipment with the design and requirements of the manufacturing enterprises did not reveal any significant shortcomings or defects.

6. INDICATORS OF THE PERFORMANCE OF THE CONTROL CIRCUIT AND THE METHOD OF THEIR CALCULATION

6.1. Mathematical model of the control loop

To calculate the performance indicators of control loops, a mathematical model of the control loop was adopted in the form closed system automatic control (AVR) with regulation according to the Polzunov-Watt principle. Structural scheme The ACS is shown in Fig. 6.1, where the following notations are adopted:

Δу - adjustable parameter;

yset - set value of the controlled parameter (setpoint);

u - control action;

g - disturbing influence;

KR - gain;

Ti is the constant of integration;

Td is the constant of differentiation.

The choice of the type of control law was made based on the analysis of the characteristics of the automation object (clause 3), design features sensors and actuators (item 4), as well as experience in adjusting regulators of similar systems.

The following was chosen as the regulatory law:

· isodromic law (PI-regulation), with Td = 0;

The isodromic law was used for the following control loops:

air temperature behind the air coolers;

supply air temperature;

return coolant temperature after the first heating air heater;

humidity when systems operate in “WINTER/SUMMER” mode.

6.2. Indicators of the quality of operation of the control loop and

transition process. The performance of the control loop was assessed based on an analysis of the characteristics of the transient process. Transient processes in ventilation and air conditioning systems equipped with automatic control systems are characterized by the following indicators (see Fig. 6.2):

1) static control error is defined as the maximum deviation of the value of the controlled parameter from its specified value after the end of the transient process;

2) dynamic error is defined as the maximum deviation of the controlled parameter from the set value observed during the transient process. In aperiodic control processes, there is only one maximum and one value of the dynamic error. During oscillatory transient processes, several maxima and, therefore, dynamic error values ​​are observed: (see Fig. 6.2);

3) the degree of attenuation of the transient process y is determined by the formula: (2)

where are the dynamic error values;

4) the amount of overshoot j is determined by the ratio of two adjacent maxima (3)

5) duration of the transition process;

6) the number of maxima during the regulation time.

6.3. Reference disturbances

Disturbances are understood as factors that cause a deviation of a controlled parameter from its specified value and disrupt the equilibrium in the ACS.

To check the quality of operation of the control loop, the following types of reference disturbances were introduced.

Type 1 disturbance.

To generate a disturbance, the position of the control valve rod was changed. The disturbance diagram is shown in Fig. 6.3.

1) turn off the control valve drive (during the formation of the disturbance);

2) create a disturbance by manually moving the valve drive to the “more” (“less”) side by 10-15% of the rod stroke value, focusing on the pointer scale;

3) turn on the drive, determine the deviation value of the controlled parameter and analyze the transient process. If the resulting deviation of the controlled parameter is commensurate with the amplitude of its pulsation and the transition process is poorly visible, increase the disturbance by 1.2..2 times;

4) turn off the drive, generate a corrected disturbance, and turn on the drive again. If during the transient process the controlled parameter changes by permissible limits and this change is clearly visible, we can assume that the reference disturbance has been selected.

Type 2 disturbance.

A task change was used to apply the perturbation. The disturbance diagram is shown in Figure 6.4.

The parameters of the reference disturbance should be selected in the following order:

1) change the setting stepwise by 10..15% of the control range value;

2) determine the deviation value of the controlled parameter and analyze the transition process. If the maximum deviation of the value of the controlled variable is small and the transient process is not clearly visible due to pulsations or small changes in the controlled variable, increase the disturbing influence by 2..3 times, taking into account that the controlled parameter does not reach the maximum during the transient process permissible value for this system;

3) Repeat the experiment, forming a corrected external disturbance. If the transient process is clearly expressed and is characterized by a sufficient change in the controlled quantity, this disturbance can be taken as a reference for a given control loop.

6.4. Test procedure for control loops

6.4.1. The procedure for checking the quality of operation of the control loop

The quality of operation of the control loop is assessed by the compliance of the recorded transient processes (during the formation of external and internal disturbances) with the established requirements.

Checking the quality of operation of the control loop and adjusting its parameters should be done in the following order:

1) set the calculated values ​​of the parameters:

· setting the controlled value;

· PID controller parameters;

2) turn on the ventilation unit and check the operation of the automation system;

3) prepare measuring instruments for recording parameters;

4) after the ventilation unit reaches a steady state, begin testing, introducing disturbances provided for in the test program.

6.4.2. Testing the control loop when applying a disturbance of type 1

To test the control loop under disturbance type 1, it is necessary:

· inflict a reference disturbance.

3) Process the resulting graphs of the transient process and determine the performance indicators of the control loop in accordance with clause 6.2.

4) When optimally setting up the control loop, observe the following parameters of the transient process during internal and external disturbances:

the maximum deviation of the value of the controlled variable should not exceed the permissible limits;

the degree of attenuation y should be in the range of 0.85..0.9;

The transition process should not be prolonged.

5) When adjusting the control loop settings, be guided by the following:

· if during the experiment the degree of attenuation of the process is less than 0.85, and the transient process has a pronounced oscillatory nature, the gain Kp should be reduced, or the integral component Ti should be increased;

· if the transient process has the form of an aperiodic transient process and is prolonged in time, the gain coefficient Kp should be increased, or the integral component Ti should be reduced;

· change the values ​​of Kr, Ti separately;

· make adjustments by applying internal reference disturbances in the direction of “more” and “less” alternately.

6) Carry out tests until a satisfactory transient process is obtained.

7) Fix:

· the load value at which the control loop was tested;

· position of the set pointer;

· value of reference disturbance;

· parameters of a satisfactory transition process.

6.4.3. Testing the control loop when applying a disturbance of type 2

To test the control loop under disturbance type 2 it is necessary:

1) Select the value of the reference internal disturbance in accordance with clause 6.3.

2) Apply a reference disturbance in the following order:

· start recording parameter values ​​(controlling influence and controlled variable);

· fix the value of the controlled parameter 1..3 minutes before applying the disturbance and record these values ​​until the end of the transient process every 10..30 s. These intervals are selected depending on the duration of the transition process;

· apply the reference disturbance “more”.

6.4.4. Testing the control loop during an emergency decrease in air temperature behind the air heater

The operation of the frost protection thermostat is characterized by the following parameters:

· response temperature;

· the minimum temperature of the return coolant when the thermostat is activated;

· the duration of the return coolant temperature decrease below the specified minimum value.

Checking the quality of operation of the thermostat and the control loop, as well as adjusting the PID controller settings, should be done in the following order:

1) set the adjustment elements to the calculated position: the adjusting element (setter) of the thermostat;

2) turn on the ventilation unit;

3) check that the supply air temperature is maintained at the set value;

4) install the measuring probe behind the air heater;

5) turn on the automatic control system;

6) record the system parameters before applying the disturbance;

7) introduce disturbance into the system, for which purpose, gradually closing the valve on the supply pipeline, achieve a decrease in the temperature behind the air heater until the thermostat operates;

8) restore normal heat supply to the air heater by fully opening the valve on the supply pipeline;

9) process test results;

10) when adjusting the control loop settings, you should be guided by the recommendations of clause 6.4.2;

11) carry out tests until a satisfactory transient process is obtained.

7. RESULTS OF CHECKING THE TECHNICAL CONDITION OF AUTOMATION EQUIPMENT

The technical condition of the automation equipment was checked using measuring instruments according to the list in Appendix 1. The results of the check are given in Appendix 10.

Checking temperature sensors.

The temperature sensors were tested by measuring the resistance of the NTC 20, Pt 1000 sensing element and comparing the measured value with the table value (see Appendix 10, Table 1) at a fixed temperature at the time of measurements.

The installed temperature sensors were found to be in good working order, the accuracy of the readings was within the permissible error.

Checking control valve drives for heat and coolant.

The control valve drives of the heating and cooling circuits were checked by comparing the setpoint set from the operator terminal for opening/closing the control valve with the actual position of the valve drive pointer after the command was executed (see Appendix 10, Table 2).

The control valve drives are operational and respond to the given commands.

Checking differential pressure sensors and relays on filters and fans.

To check, pressure was created on the pressure side of the sensor and a vacuum on the suction side. The sensor's performance was monitored by turning on the indicator light on the automation panel and changing the state of the controller's discrete input (see Appendix 10, Table 3).

The differential pressure sensors-relays are working properly.

Checking antifreeze thermostats for air heaters.

The thermostats were tested by cooling the sensing element until the thermostat changeover contact was mechanically closed. Performance monitoring was carried out by turning on the indicator light of the automation panel and changing the state of the discrete input of the controller (see Appendix 10, Table 4).

Thermostats are in good working order and protect the air heaters from freezing.

Checking air valve actuators.

The air valve drives of the circuits were checked by comparing the setpoint set from the operator terminal for opening/closing the control valve with the actual position of the valve drive pointer after the command was executed (see Appendix 10, Table 5).

All drives are working properly. When the fans stop, the drives close.

Checking the functionality of control keys, relay contacts and magnetic starters.

The performance of control keys, relay contacts and magnetic starters was checked by mechanically closing the contacts of the corresponding keys, relays and magnetic starters. Performance monitoring was carried out by changing the state of the controller's discrete input (see Appendix 10, Table 6).

8. Application software development

Application programs were developed using a specialized package software CARE XL Web version 8.02.

The programs were developed in accordance with the algorithms described in Appendices 6, 7, 8. The algorithms correspond to the circuit solutions of the AOB sections and implement the following main functions of the automation systems:

for ventilation units P1-V1, P2-V2:

· maintaining the temperature of the supply air supplied to the serviced premises by controlling the drives of the control valves of the cooling circuit (in summer operation mode), heating circuits (in winter operation mode);

· maintaining the humidity of the supply air by controlling the equipment of the irrigation chamber and the drive of the control valve of the second heating circuit;

· permanent job circulation pumps during winter operation and prohibiting their startup during summer operation;

· control of work technological equipment air supply units;

· issuing light signals to the front panel of the automation panel about workers and emergency modes operation of air supply equipment;

The algorithm for control programs for installations P1-V1 and P2-V2 is given in Appendix 6.

for ventilation units P3-V3, P4-V8:

· maintaining the temperature of the supply air (during winter operation) supplied to the serviced premises by controlling the drive of the control valve of the heating circuit;

· supply of outside air to serviced premises (during summer operation);

· shutdown air handling unit on the “Fire” signal;

· maintaining the temperature of the return network coolant according to the schedule in “parking” mode (during winter operation);

· constant operation of the circulation pump during winter operation and prohibition of its start during summer operation;

· control of supply and exhaust fans;

· protection of supply and exhaust fans and circulation pumps from failure in abnormal and emergency situations;

· protection of the heater of the air handling unit from freezing;

· control of the operation of the process equipment of the air handling unit;

· issuing light signals to the front panel of the automation panel about operating and emergency operating modes of the air handling unit equipment;

· output/input of parameter values ​​and control commands to/from the dispatcher's workstation.

The algorithm for control programs for the P3-V3 and P4-V8 installations is given in Appendix 7.

for ventilation units B4, B5, B6, B7:

· air exhaust from serviced premises;

· shutdown of installations by the “Fire” signal;

· exhaust fan control;

· protection of the exhaust fan from failure in abnormal and emergency situations;

· output/input of parameter values ​​and control commands to/from the dispatcher's workstation.

The algorithm for control programs for installations B4, B5, B6, B7 is given in Appendix 8.

for ventilation unit RV1:

· maintaining the temperature of the supply air supplied to the compressor station by controlling the drives of the recirculation and intake air valves;

· shutdown of the installation due to the “Fire” signal;

· supply fan control;

· protection of the supply fan from failure in abnormal and emergency situations;

· monitoring the operation of the plant’s process equipment;

· issuing light signals to the front panel of the automation panel about operating and emergency operating modes of the installation equipment;

· output/input of parameter values ​​and control commands to/from the dispatcher's workstation.

The algorithm for the control program for the PB1 installation is given in Appendix 8.

The text of the installation control programs is given in Appendix 9.

9. Carrying out TESTS and adjustment work

After checking the quality of installation, the technical condition of the automation equipment and eliminating identified deficiencies, the developed programs were loaded into random access memory devices (RAM) and recorded in the non-volatile memory of the controller. A preliminary check of the correct operation of the programs was carried out using the built-in debugger XwOnline.

Proper operation testing for the Excel WEB controller was carried out using a laptop computer and the Internet Explorer browser.

Tests of automation systems were carried out in the sequence determined by the test programs, which are given in Appendices 2, 3.

Before testing, preliminary testing of the systems was carried out to bring them to an operational state. Before the start of each test cycle, the systems were brought into a stable state. The test cycle was considered completed after completion of the transition process, i.e. until the system is restored to a stable state. Tests were stopped if the measured parameters reached values ​​outside the limits established by the test program.

During the testing process, the following conditions were met:

· the equipment is in the mode for which the system under test was designed;

· the system under test is in operation and maintains the specified value of the controlled variable;

· the adjustable range is sufficient to eliminate disturbances introduced during testing;

· when operating several control loops interconnected technological process(control circuits for the first and second heating, humidity, air cooler), first of all, those circuits that eliminate disturbances arising from the operation of other circuits were adjusted and tested;

· technological protection devices are included to prevent an accident from occurring in the event of incorrect operation of the tested control loop.

When setting up control loops, the following quality indicators were determined:

· dynamic error ;

degree of attenuation of the transient process y

· overshoot value j ;

· duration of the transition process Tpp;

· number of maxima of dynamic error during regulation time.

The results of calculations of indicators are given in paragraph 10.

10. Test and adjustment results

During the commissioning process the following work was carried out:

· testing of individual elements and assemblies;

· activation of technological protection devices;

· putting systems into operation and reaching nominal mode;

· setting up control loops to maintain the specified value of the controlled parameter;

· checking the correct response of control loops to introduced disturbances;

· adjustment of control loop parameters.

Testing of elements and assemblies showed that they are all in working condition.

During the tests, the response of the automation system to the operation of the following process protection devices was checked:

· capillary antifreeze thermostats;

· software thermostats for frost protection based on a return coolant temperature sensor;

· circuits for monitoring the operation of magnetic starters;

· Fan belt break sensors;

· thermal relays of electric motor protection circuit breakers;

· circuits for turning off fans based on a “FIRE” signal from the building’s alarm system.

Technological protection devices were checked in the following sequence.

The operation of capillary antifreeze thermostats was checked according to the method described in paragraph 6.4.4. The thermostat setting was set on its scale at 5ºС. The specified minimum value of the return coolant was taken equal to 12 ºС (for installations P1-V1, P3-V3, P4-V8) and 18 ºС (for installation P2-V2). The results of checks when the systems are in operating and parking modes are given in Table 10.1.

During repeated tests of the systems, the setting value was determined at which parameter = 0. It was 10.5 ºС (for installations P1-V1, P3-V3, P4-V8) and 16.5 ºС (for installation P2-V2).

Table 10.1 - Results of checks of automation systems when triggered

capillary frost protection thermostats

Ventilation system

Checking the operation of software antifreeze thermostats based on a return coolant temperature sensor was carried out according to the method described in clause 6.4.4. The setting of the program thermostat regulator 52Px_RWFrzPidSet was set to 12ºС (for installations P1-V1, P3-V3, P4-V8, x =1,3,4) and 18ºС (for installation P2-V2, x =2). The value of 52Px _RWFrzStatSet was taken equal to 10.5ºС (for installations P1-V1, P3-V3, P4-V8) and 16.5 ºС (for installation P2-V2). The results of checks when the systems are in operating and parking modes are given in Table 10.2.

Table 10.2 - Results of checks of automation systems when software antifreeze thermostats are activated based on a return coolant temperature sensor

Ventilation system		Return coolant temperature when the thermostat is activated, ºС

As can be seen from the table, the operation of software antifreeze thermostats based on a return coolant temperature sensor is satisfactory.

Testing of circuits for monitoring the operation of magnetic starters was carried out by generating the following alarm signals:

System P1-B1: 52P 1_RaFanStsAlm, 52P 1_SaFanStsAlm, 52P 1_Htg 1PmpStsAlm;

System P2-B2: 52P 2_RaFanStsAlm, 52P 2_SaFanStsAlm, 52P 2_Htg 1PmpStsAlm;

System P3-V3: 52P 3_RaFanStsAlm, 52P 3_SaFanStsAlm, 52P 3_Htg 1PmpStsAlm;

System P4-V8: 52P 4_RaFanStsAlm, 52P 4_SaFanStsAlm, 52P 4_Htg 1PmpStsAlm;

System B4: 52V 4_RaFanStsAlm;

System B5: 52V 5_RaFanStsAlm;

System B6: 52V 6_RaFanStsAlm;

System B7: 52V 7_RaFanStsAlm;

System B8: 52V 8_RaFanStsAlm;

System P B1: 52RV1_RaFanStsAlm.

All control schemes showed their performance. The response of the automation systems corresponded to the operating algorithms of the systems (Appendices 6, 7, 8)

The fan belt break sensors were checked by generating signals from the following accidents:

System P1-B1: 52P 1_RaFanDpsAlm, 52P 1_SaFanDpsAlm;

System P2-V2: 52P 2_RaFanDpsAlm, 52P 2_SaFanDpsAlm;

System P3-V3: 52P 3_RaFanDpsAlm, 52P 3_SaFanDpsAlm;

System P4-V8: 52P 4_SaFanDpsAlm ;

System B4: 52V 4_RaFanDpsAlm;

System B5: 52V 5_RaFanDpsAlm ;

System B6: 52V 6_RaFanDpsAlm ;

System B7: 52V 7_RaFanDpsAlm;

The automation systems processed emergency signals in accordance with the system operation algorithms (Appendices 6, 7, 8).

When simulating a failure of the frequency converters of the supply fans of the P1-B1 and P2-B2 units, it was carried out by closing the corresponding relay contact. When simulating the activation of thermal relays of electric motor protection circuit breakers (by pressing the “TEST" button on the machines), the corresponding electric motors were turned off, and the automation systems controlled the equipment in accordance with the system operation algorithms (Appendices 6, 7, 8).

When simulating the “Fire” signal, the supply and exhaust fans, closed air valves, in “WINTER” mode circulation pumps continued to work.

When transferring the systems to automatic mode, sequential operation of components and assemblies was ensured in accordance with the operating algorithms given in Appendices 6, 7, 8.

The durations for systems to reach nominal mode when they are put into operation are given in Table 10.3.

Table 10.3 - Duration of systems reaching nominal mode, min

		Control loop
		Temperature behind the air cooler	Supply air temperatures	Relative humidity of supply air
	Summer (*)
	Summer (*)
	Summer (*)
	Summer (*)
	Summer (*)

After reaching the nominal mode, all control loops ensured the maintenance of the controlled parameter with the specified accuracy (see paragraph 3).

Checks of the response of control loops to introduced disturbances were carried out in accordance with the methodology described in paragraph 6. Tests were performed for the following circuits:

1) Systems P1-V1, P2-V2 season “WINTER”

· relative humidity supply air;

· return coolant temperature after the first heating air heater;

· temperature of the return coolant after the first heating air heater in case of an emergency temperature drop.

2) Systems P1-B1, P2-B2, season “SUMMER” (*)

air temperature after the second heating;

3) Systems P3-V3, P4-V8, season “WINTER”

· temperature of the return coolant after the heating air heater;

· temperature of the return coolant after the heating air heater in case of an emergency temperature drop.

4) Systems P1-B1, P2-B2, season “SUMMER” (*)

· air temperature behind the air coolers;

air temperature after the second heating;

· relative humidity of supply air.

5) RV1 systems, “WINTER” season

· supply air temperature;

The results of the selection of parameters are shown in Table 10.4.

As can be seen from the table, during the adjustment process, circuit parameters were selected that ensure satisfactory quality of transient processes.

(*) – system adjustment was carried out in the “WINTER” mode

Table 10.4 - Results of adjusting control loops (system P1-B1)

Adjustable Parameter

Controller parameters

Air temperature after second heating

Relative humidity of supply air

Test conditions: “Winter” mode Tout = -7ºС;

"Summer" mode Tnar.v=____ºС.

Table 10.4, continued - Results of adjusting control loops (P2-V2 system)

Adjustable Parameter

Controller parameters

Transient process parameters (perturbation type 1)

Parameters of the transient process (perturbation type 2)

Relative humidity of supply air

Air temperature after second heating

Return coolant temperature after the first heating air heater

Return coolant temperature after the first heating air heater during an emergency temperature drop

Air temperature behind air coolers

Air temperature after second heating

Relative humidity of supply air

Test conditions: “Winter” mode Tout = -10ºС;

"Summer" mode Tnar.v=____ºС.

Table 10.4, continued - Results of adjusting control loops (P3-V3 system)

Adjustable Parameter

Controller parameters

Transient process parameters (perturbation type 1)

Parameters of the transient process (perturbation type 2)

Return coolant temperature after the first heating air heater

Return coolant temperature after the first heating air heater during an emergency temperature drop

Air temperature behind air coolers

Air temperature after second heating

Relative humidity of supply air

Test conditions: “Winter” mode Tout = -12ºС;

"Summer" mode Tnar.v=____ºС.

Table 10.4, continued - Results of adjusting control loops (P4-V8 system)

Adjustable Parameter

Controller parameters

Transient process parameters (perturbation type 1)

Parameters of the transient process (perturbation type 2)

Air temperature after heating

Return coolant temperature after the first heating air heater

Return coolant temperature after the first heating air heater during an emergency temperature drop

Air temperature behind air coolers

Air temperature after second heating

Relative humidity of supply air

Test conditions: “Winter” mode Tout = -11ºС;

"Summer" mode Tnar.v=____ºС.

Table 10.4, continued - Results of adjusting control loops (PB1 system)

Adjustable Parameter

Controller parameters

Transient process parameters (perturbation type 1)

Parameters of the transient process (perturbation type 2)

Supply air temperature

Test conditions: “Winter” mode Tout = -6ºС;

"Summer" mode Tnar.v=____ºС.

1. Automation systems ensure the operation of ventilation units in automatic mode in accordance with design solutions section AOB and the requirements of the operating organization.

2. In the outside air temperature ranges at which the tests were carried out (winter: -20..+2 ºС), the equipment used (drives, valves, sensors) ensures that the values ​​of the control parameters are maintained within the specified ranges. Testing and adjustment of systems in the “SUMMER” mode will be carried out in May.

3. In the process of commissioning of automation systems for ventilation units, parameters and settings were selected and recorded in the non-volatile memory of the controllers to ensure stable operation of the process equipment of ventilation units. The specified operating modes and system regulation parameters achieved during commissioning work are ensured during normal operation of the equipment and timely implementation Maintenance(cleaning filters, tensioning belts, flushing circuits, etc.).

11. Operation of automatic ventilation systems must be carried out in accordance with the requirements technical descriptions, operating instructions and user manual (see appendices to this

Individual tests of electrical equipment are performed:

• Setting parameters, protection settings and equipment characteristics, testing control, protection and alarm circuits.
• Inspection and testing of cooling systems and on-load tap-changers of transformers, protection devices, automation and equipment control.
• Testing electrical equipment at idle.

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

Electrical equipment commissioning program

List of commissioning works Commissioning works, the list of which you will see below, are carried out during the equipment testing period, guaranteeing compliance with the requirements prescribed by the working documentation, technical specifications, standards for individual units, mechanisms and machines for preparing equipment for acceptance and testing. During a comprehensive testing, which lasts 72 hours, adjustment, testing, and ensuring the interconnected functioning of the devices at idle are carried out, with their transfer to load and output to operating mode. The execution program and the composition of the above operations are brought into accordance technical specifications, safety precautions, fire safety and labor protection rules.

NDP program

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Certificate of completion of commissioning works

COMPLETION OF TECHNICAL REPORTS ON COMMISSIONING WORKS CARRIED OUT A technical report is a mandatory document reflecting technical condition installed equipment. The technical report must contain information of a purely technical nature that is of interest at the time the facility being set up is put into operation to assess the condition of the equipment, as well as standardization of the measurement values ​​required during repeated regular and extraordinary operational checks of equipment, mechanisms and 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 based on the measurements taken during the commissioning process by the persons performing these measurements, signed by them.

How is the commissioning program compiled and what does it include? The commissioning program is a document that clearly describes the entire list of actions that will be carried out by the responsible organization. On the Internet you can see discussions about whether the commissioning methodology should be included in the Program or whether it should be drawn up as a separate document. There are no clear requirements regarding this, so it all 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 upon by the customer; signatures and seals of the parties are placed in the header of the document.

Report on commissioning of electrical equipment

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Next are the following sections (as an example, let’s take the preparation of a hotel heating system):

• General provisions that describe for which object the Program is approved, the availability of special permits for test participants, a list of regulatory documents on which the manipulations performed are based.
• The procedure for organizing and carrying out basic adjustment activities. The ultimate task is established - to ensure conditions for a uniform supply of coolant to heating systems. After this, all the manipulations that need to be carried out and the list of necessary devices are briefly described.
• Setup 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 coolant, permissible heat losses).

Report on commissioning of electrical equipment

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

The list of commissioning works is wide. Let's name the following points: debugging of thermomechanical, boiler, gas, heating, ventilation, sewer systems, instrumentation and automation systems, security and fire alarm devices Commissioning of heating points Commissioning of heating points is carried out before they are put into operation. The main task of commissioning is to check the operability and efficiency of systems in various modes.

This testing must be carried out by highly qualified specialists who know all the standards and state standards. High-quality 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 of any complexity.

The procedure for carrying out 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 for compliance with existing standards and design, setting up devices and their comprehensive testing.

Commissioning work The final stage after installing equipment or repairing a structure before putting it into operation is the so-called 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 requirements and standards, documents and projects. According to the design plans of the premises, commissioning work is needed in order to launch fire alarm, for installation of electrical equipment, ventilation and heating.

These works must be carried out in accordance with the design plan of the structure. Under no circumstances should the system be put into operation without going through this process. K very important points When carrying out this procedure, the main objects of the system are tested at very high load, as well as under critical conditions.
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We ask you to provide clarification on the issue of payment for the preparation of the Technical Report on acceptance, commissioning tests and adjustment of electrical equipment in the estimates made in FERp-2001 prices.

In the General Provisions FERp 81-()5-OP-2001 pos. 1.14. stated:

“FERp part 1 does not take into account the costs of drawing up the Technical Report, as well as estimate documentation.”

In the Appendices to FERp dated January 30, 2014 No. 81 -05-Pr-2001, Table 1.1 indicates that the cost of preparing acceptance documentation is 5% of the cost of commissioning.

Typically, in estimates, the cost of preparing a technical report on completed projects is taken at the rate of up to 5% of the cost of commissioning work.

We ask you to provide clarification on the issue of the amount of payment for the preparation of the Technical Report.

The amounts of funds for the preparation of a technical report are taken into account in Chapter 4 of the “Consolidated estimate for the commissioning of enterprises, buildings, structures”, which is indicated in the corresponding entry in MDS 81-40.2006 “Instructions for the application of federal unit prices for commissioning work”.

Chapter 4 of the Consolidated Estimate includes the amounts of funds spent by the Customer to reimburse in the form of compensation for the costs of contract commissioning organizations not directly related to the implementation of commissioning.

Complex of commissioning works for electrical equipment and electrical installations

Based on the results of the work, a protocol is drawn up that displays all the received parameters, as well as a security automation setup map. The result of the commissioning work is the certified delivery of the facility ready for commissioning to the Customer.

Develops a work program for commissioning work (commissioning program), including labor protection measures; Provides the customer with comments on the project identified during the development of the work program; Prepares a fleet of measuring instruments, testing equipment and devices.

Commissioning of electrical equipment

At the second, no less important, stage, the actual commissioning of electrical equipment takes place in compliance with all electrical safety requirements: commissioning of the installation and networks is carried out with the supply of electrical voltage.

At this stage, the customer must agree with the organization responsible for the repair and adjustment of electrical equipment, all questions and comments regarding installation and troubleshoot problems.

Commissioning, carried out before individual testing of process equipment: - external inspection of electrical equipment for compliance with the design; — checking and setting up individual elements and functional groups; — assembly of test circuits; — checking parameters and taking characteristics of individual devices; — insulation resistance measurement; — checking the connection of the windings; — adjustment of relay equipment; — checking the correct execution of the primary and secondary switching circuits.

Report on commissioning of electrical equipment

Annex 1.

Form for completing the section “Progress of main work”

All-Russian Research Institute for Operation of Nuclear Power Plants

Production Association Atomenergonaladka

Electrical equipment commissioning program

External lighting of the platforms and the reinforcement unit is carried out with ZHKU16-250 lamps.

According to the PUE (clause 1.7.3, edition 7), the project provides for a “TN-S” grounding system (zero protective PE and zero working N conductors are separated throughout). In accordance with the requirements of VSN 012-88, all cables laid in the ground, as well as an external grounding device, are subject to intermediate acceptance with the drawing up of an act for hidden work.

During the inspection, the degree of their safety and reliability and compliance with the declared design characteristics are determined. Based on the results of the work, all identified deficiencies that impede the normal operation of the equipment are eliminated. Installation and commissioning work is carried out by specialized organizations with which the enterprise enters into a business agreement.

If the enterprise has trained engineering and technical personnel and the necessary instrumentation, then this work can be performed in-house.