Support in the elevator shaft

Registration of measurement results

Preface

1 area of use

2 Normative references

3 Frequency and composition of tests

4 Procedure and sequence of acceptance and periodic tests

5 Instruments and measuring instruments

6 Processing of measurement results

7 Presentation of results of acceptance and periodic tests

Appendix A (recommended). Form of aerodynamic acceptance test report

Bibliography

Aerodynamic testing of the smoke removal system

Test report for ventilation and smoke removal systems - sample

Individual test report for smoke removal system

Testing smoke removal and air pressurization

How to properly maintain smoke exhaust systems*

Frequency of maintenance of smoke removal systems*

acceptance

Periodic

The ESSE company provides a full range of services for the design, installation, commissioning and maintenance of fire safety systems (fire extinguishing systems, fire alarms, warning and evacuation control systems, smoke protection systems).

After the introduction of GOST R 53300-2009 “SMOKE PROTECTION OF BUILDINGS AND STRUCTURES. Methods of acceptance and periodic testing”, this type of work has become easier there is a generally accepted standard that can be referred to.

There are several types of tests, let's start with support in the stairwell, architects seem to call them H2 (above-ground smoke-free staircase). It looks something like this:

Rice. 1. Ventilation of a smoke-free staircase, view from the outside.

The supply is usually from above, with the door to the street below. The bottom door opens outwards. Up close it looks like this:

Rice. 2. Exit to the street from the staircase.

Internal doors floors open towards the staircase.

The air supply for pressurization in this case looks like this: a valve at the top of the staircase, installation on the roof.

The choice of measurement points is described in GOST; questions arise about the details.

The first inconvenience is the passage of the impulse tube. During testing, the door seems to be closed, so how do you get the tube through?

Most appropriate place marked in the picture. You need to make sure that the tube passes the pressure pulse.

In this case, a slight leak in the door ledge is possible, it has very little effect on the result, since in both test modes according to paragraph 4.4. sensitivity to small leaks is low. Although, of course, if in the second mode the pressure is at the lower limit, 20 Pa, then the opening needs to be sealed.

We measure the pressure, enter it into the log, and adjust it if necessary. Based on the final measurements, we draw up protocols. The second tube, not in the photo, in accordance with GOST sometimes needs to be moved away from the measuring point.

Tests are carried out in two modes:

At this stage, sometimes difficulties arise. The two test modes are very different; in order to meet the standard in the second mode, a powerful fan with high flow rate and, accordingly, pressure is needed.

When switching to testing in the first mode, at all behind closed doors, there is a lot of pressure in the stairwell.

Actually, this is not an adjustment issue: designers must provide for both options; there are two main ways: selecting a suitable fan or a pressure relief system. In the second case, adjustment comes down to adjusting the valve, in the first - to adjusting the fan.

We simply fulfill the requirements of GOST we move the elevator to the desired floor and open the doors.

On the adjacent floor we open the elevator door, for this you need a triangular key, or, as a last resort, combination pliers. The arrow shows the lock for manually opening the elevator doors.

We measure the backwater. Based on the measurement results, we compact or decompact the elevator shaft or ventilation network.

That's all. Due to the clarity of pressure measurements, the difficulties are hidden in the details.

For each final measurement, a protocol is drawn up and attached to the passport. Therefore, the passports for smoke ventilation systems are thicker than the passports for general ventilation.

The fundamental documents that establish the procedure and frequency of acceptance and periodic testing of ventilation systems for smoke protection of buildings and structures with artificial induction are the Norms fire safety of the Republic of Belarus “Smoke protection of buildings and structures. NPB 23-2000 “Methods of acceptance and periodic tests” and GOST 12.3.018-79 “Ventilation systems. Methods of aerodynamic tests".

Acceptance tests of smoke protection systems are carried out upon acceptance into operation of newly constructed, reconstructed and repaired buildings, as well as upon completion of major and restoration repairs of smoke protection systems. Periodic tests are carried out in accordance with the technical and operational documentation of the building, but at least once a year. Acceptance and periodic testing of smoke protection systems for buildings must be carried out by specialized organizations licensed to carry out installation, repair, maintenance, and adjustment of these systems in the presence of representatives of the state fire inspection.

All measurements during aerodynamic tests must be carried out in compliance with the requirements of GOST 12.3.018. Before starting aerodynamic tests in the building, the situation specified in NPB 23-2000, paragraphs 4.2-4.4 is reproduced. All measurements during aerodynamic tests of smoke protection systems are performed no earlier than 15 minutes after the situation in the building according to paragraphs 4.2-4.4 is created. and turning on the fans of the smoke protection system.

When conducting aerodynamic tests, it is recommended to use the following measuring instruments:

combined pressure receiver - for measuring dynamic and total flow pressures at air speeds of more than 5 m/s and static pressures in steady flows;

differential pressure gauges - for recording pressure differences;

anemometer - for measuring air speeds less than 5 m/s; barometer - to measure pressure in the environment;

thermometer - for measuring air temperature;

psychrometer - for measuring air humidity;

tachometer - to determine the number of revolutions of the electric motor and fan shaft;

stopwatch - to determine time intervals during testing;

ruler - to determine the coordinates of pressure and velocity measurement points, geometric parameters of air ducts and smoke exhaust valves.

When carrying out tests, the aerodynamic characteristics of ventilation systems, excess static pressure in protected volumes (staircases, elevator shafts, elevator and staircase halls, airlocks), air flow rate removed through smoke valves directly from the premises, corridors (halls) on escape routes are determined , the flow rate (speed of movement) of air in the door when leaving the floor (room) on the evacuation route. The measurement locations for the listed controlled parameters are determined taking into account the requirements of GOST 12.3.018, the design solution of the smoke protection system and the space-planning solutions of the building.

The aerodynamic characteristics of ventilation systems and excess static pressures in the protected volumes of the building are determined using a combined pressure receiver and differential pressure gauge. Excess static pressures in protected volumes are measured in relation to the adjacent room (hall, corridor and other rooms), while the receivers static pressure in these rooms they are placed at the same height and located at a distance of at least 0.5 meters from the enclosing structures.

The speed of air movement in door openings, valve openings and other openings is determined using an anemometer.

Schematic diagram of measurements of parameters of the smoke protection system and gas exchange on the floors of the building during operation ventilation system smoke protection is shown in Fig. 3.

Fig 3.

1 - smoke removal shaft, 2 - smoke-free staircase of the second type (H2), 3 - elevator shafts, 4 - floor corridor, -> - directions of air flow.

The amount of excess static pressure in the protected volumes must be at least 20 Pa. The measured volumetric air flow rate removed from the room or corridor must be no less than the calculated value. The maximum pressure drop at the doors of escape routes should not exceed 150 Pa. The air flow supplied to airlock vestibules operating during a fire with one open door into a corridor, hall or basement should be determined by calculation or by the air speed in the door opening (air speed must be at least 1.3 m/s).

Test results for smoke protection systems must contain:

full address, nature of use, departmental affiliation, series standard project buildings (if any);

type of tests (acceptance or periodic);

a list of measuring instruments used during aerodynamic tests, indicating the serial number and date of verification (calibration);

a brief description of the smoke protection system, including information about its constructive solution, installed equipment;

diagrams of the smoke removal and supply ventilation system;

information about the technical condition of the smoke protection system at the time of testing;

GOST R 53300-2009

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

SMOKE PROTECTION OF BUILDINGS AND STRUCTURES

Acceptance and periodic testing methods

The smoke control systems of buildings. Methods of acceptance and routine tests

OKS 13.220.50

Date of introduction 2010-01-01
with the right of early application*
_______________________
*See Notes label.

1 DEVELOPED by the Federal State budgetary institution"All-Russian Order of the Badge of Honor" Research Institute of Fire Defense" Ministry Russian Federation for Civil Defense, Emergency Situations and Disaster Relief (FGBU VNIIPO EMERCOM of Russia)

2 INTRODUCED by the Technical Committee for Standardization TC 274 "Fire Safety"

3 APPROVED AND ENTERED INTO EFFECT by Order of the Federal Agency for Technical Regulation and Metrology dated February 18, 2009 N 76-st

4 This standard takes into account the requirements of the international standard EN 137:2006* "Protective breathing devices. Self-contained Breathe-helping machine open cycle compressed air with full face. Requirements, testing, marking"

________________
* Access to international and foreign documents mentioned in the text can be obtained by contacting Customer Support. - Database manufacturer's note.

5 INTRODUCED FOR THE FIRST TIME

6 REPUBLICATION. June 2019

The rules for the application of this standard are established in Article 26 of the Federal Law of June 29, 2015 N 162-FZ "On Standardization in the Russian Federation" . Information about changes to this standard is published in the annual (as of January 1 of the current year) information index "National Standards", and the official text of changes and amendments is published in the monthly information index "National Standards". In case of revision (replacement) or cancellation of this standard, the corresponding notice will be published in the next issue of the monthly information index "National Standards". Relevant information, notices and texts are also posted in information system for general use - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet (www.gost.ru)

1.1 This standard establishes the procedure and frequency of acceptance and periodic testing of smoke ventilation systems for buildings and structures for various purposes (hereinafter referred to as buildings).

1.2 The test results established by this method are intended to assess the technical condition of smoke ventilation systems at new construction and reconstruction sites, as well as at existing buildings.

This standard uses normative reference to the following standard:

GOST 12.3.018 SSBT Ventilation systems. Aerodynamic test methods

Note - When using this standard, it is advisable to check the validity of the reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or using the annual information index "National Standards", which was published as of January 1 of the current year, and on issues of the monthly information index "National Standards" for the current year. If an undated reference standard is replaced, it is recommended that the current version of that standard be used, taking into account any changes made to that version. If a dated reference standard is replaced, it is recommended to use the version of that standard with the year of approval (adoption) indicated above. If, after the approval of this standard, a change is made to the referenced standard to which a dated reference is made that affects the provision referred to, it is recommended that that provision be applied without regard to that change. If the reference standard is canceled without replacement, then the provision in which a reference to it is given is recommended to be applied in the part that does not affect this reference.

3.1 Acceptance tests of supply and exhaust smoke ventilation systems are carried out during the commissioning of new construction and reconstruction projects.

3.2 The list of indicators monitored during acceptance testing of smoke ventilation systems is presented in Table 1.

Table 1


Parameter	Parameter control method	Permissible value
Schematic solution for smoke ventilation of the facility	Comparison
Quantity, installation position and technical data of smoke exhaust ventilation fans	Comparison	Ventilation passport data
Quantity, installation position and technical data of smoke ventilation fans	Comparison	Ventilation passport data
Number, installation position and technical data of smoke and fire dampers, normally closed	Comparison	Ventilation passport data
Design of fire-resistant air ducts (channels) for supply and exhaust smoke ventilation	Visually	Ventilation passport data. Certificates of completed work. Acts of hidden work
Actual flow rates of air removed by smoke ventilation systems through smoke intake devices directly from the premises	Quantification	Ventilation passport data
The same - from corridors (halls) located on evacuation routes	Quantification	Ventilation passport data
The same - from premises protected by gas aerosol and powder fire extinguishing installations	Quantification	Ventilation passport data
Actual values overpressure in smoke-free staircases type H2 (staircase sections)	Quantification	In the range of 20-150 Pa
Same thing in elevator shafts	Quantification	In the range of 20-150 Pa
The same - in vestibule locks	Quantification	In the range of 20-150 Pa; not less than 1.3 m/s in the plane of the door

3.3 During acceptance tests, the indicators and characteristics given in 6-11 of Table 1 must be checked.

Additionally for a comprehensive condition check fire protection the object as a whole should be subject to control indicators 1-5 of table 1.

3.4 The required parameters of exhaust smoke ventilation systems must be taken on the basis of ventilation passports made in in the prescribed manner the organization that set up the systems.

3.5 Periodic testing of smoke ventilation systems must be carried out at least once every 2 years.

3.6 During periodic testing, only the parameters specified in 6-11 of Table 1 should be monitored.

3.7 When conducting periodic tests, at least 30% of the total number of supply and exhaust smoke ventilation systems, selected by random selection, must be subject to control.

4.1 Acceptance tests are carried out after completion of installation, running-in of ventilation units, adjustment engineering equipment, carrying out fire protection work, certification of systems.

4.2 During testing, the initiation of the operation of smoke ventilation systems must be carried out by the commissioning organization in the required combination of system interaction.

In the absence of data on the order of operation of supply and exhaust smoke ventilation systems, it is allowed to initiate the operation of the systems in the automatic control mode by first de-energizing the electrical receivers of the systems automatic fire extinguishing, alarm, voice notification, etc.

4.3 Monitoring of the actual parameters of exhaust smoke ventilation systems should be carried out at the smoke intake devices in the network sections furthest from the fans.

4.4 In above-ground smoke-free staircases of type H2, excess pressure measurements must be carried out in two stages:

- all doors of the staircase are closed, with the exception of the door on the floor leading from the building to the outside; measurements are taken on the closed door of the adjacent floor located above the floor equipped with an exit from the building to the outside.

In underground smoke-free staircases of type H2, excess pressure measurements should be carried out in two stages:

- all staircase doors are closed, measurements are taken on the closed doors of the lower and upper floors;

- all doors of the staircase are closed, with the exception of the door on the floor leading from the building to the outside; measurements are taken on the closed door of the adjacent floor located below the floor equipped with an exit from the building to the outside.

4.5 When monitoring the actual parameters of the supply smoke ventilation systems specified in 4.4, all doors of the rooms (vestibules, halls, lobbies, corridors) located along the evacuation route from the staircase to the external exit must be open.

4.6 Determination of excess pressure in elevator shafts connecting above-ground floors should be made on the door of the adjacent overlying floor in relation to the main landing floor; in elevator shafts connecting underground floors - on the door of the adjacent lower floor in relation to the main landing floor.

In elevator shafts that provide a connection between above-ground and underground (including basement) floors, the values of excess pressure on the adjacent floors below and above are subject to measurement in relation to the main landing floor.

4.7 When monitoring the actual parameters of the supply smoke ventilation systems specified in 4.6, the elevator must be on the “main landing floor”, the doors of the cabin and the elevator shaft must be open.

4.8 Measurement of excess pressure in elevator shafts on underground (including basement) floors should be carried out at open doors elevator halls.

4.9 Measurement of excess pressure in airlocks should be carried out with the doors closed in relation to the simulated smoke-filled room.

4.10 To determine the rate of air flow through the open doorway of the airlock, measurements must be made on the air supply device of the supply smoke ventilation system. It is allowed to carry out the above measurements in the channel section with a pitot tube in accordance with the provisions of GOST 12.3.018.

Recalculation of the results obtained must be carried out in accordance with section 6 of this standard.

4.11 All measurements must be made with the window openings closed.

4.12 Decorative and protective grilles of smoke intake devices that change the direction of air flow must be dismantled before testing.

4.13 All measurements are carried out no less than 2 minutes after the systems are started and reach stationary mode.

4.14 The number of air speed measurements must be at least:

- 6 for vane anemometers;

- 10 for hot-wire anemometers.

4.15 Measuring points with anemometers in the measuring section must be equidistant from each other.

4.16 The thickness of the fire-retardant coating is checked selectively, but not less than 15% of the total surface area of fire-resistant air ducts.

4.17 Permissible value The discrepancy between the actual parameters in relation to the values specified in the ventilation passports for exhaust smoke ventilation systems should be no more than 15%.

4.18 If it is necessary to determine the thickness of the fire retardant coating on open areas fire protection work, taking into account the provisions of 3.3, the value of the standard deviation from the nominal thickness of the fire retardant coating of the air duct is accepted according to the technological regulations for applying the fire retardant composition.

5.1 The flow rate of air removed by exhaust smoke ventilation systems and the speed of air flow through the open doorway of airlocks are measured by anemometers with an accuracy class of at least 1.0.

5.2 The pressure drop in staircases, elevator shafts, airlocks, and elevator halls is measured by a differential pressure gauge with an accuracy class of at least 1.0.

5.3 The thickness of the fire-retardant coating of fire-resistant air ducts is determined by a thickness gauge with an accuracy class of at least 1.0.

5.4 Anemometers, differential pressure gauges and thickness gauges used during testing must be registered in State Register measuring instruments, have verification certificates.

5.5 The measurement ranges of instruments must comply with the requirements of Table 2.

table 2


Device type	Measuring range		Units

Anemometer	No more than 0.5	At least 20
Differential pressure gauge	No more than 5	Not less than 400
Thickness gauge	No more than 2	Not less than 150

5.6 Differential pressure gauges must be equipped with two hoses, each at least 3 m long. Internal section hose is selected according to the outer diameter of the pressure receiver.

6.1 Based on the results of all primary measurements, the arithmetic mean values of the measured parameters are determined

where is the current value of the measured parameter in the th dimension;

- amount of points.

6.2 The actual volumetric flow rate of air removed by the smoke control exhaust ventilation system is determined by the formulas:

where , is the air flow rate in the air intake and air supply device, respectively, m/h;

, is the flow area of the smoke intake and air supply device, respectively, m.

6.3 The speed of air flow through an open doorway is determined by the formula

where is the average exhaust velocity supply air through the open doorway of the airlock vestibule, m/s;

- area of the door (larger leaf), m.

6.4 The standard deviation from the nominal thickness of the fire retardant coating is determined by the following formula

where is the standard deviation, mm.

7.1 Based on the results of acceptance and periodic tests of smoke ventilation systems, a protocol is drawn up, the form of which is presented in Appendix A.

Form of aerodynamic acceptance test protocol

1 Acceptance object

2 Purpose of acceptance

3 Acceptance method

4 Acceptance procedure

5 Acceptance results

5.1 List of indicators to be assessed and assessment results (Table 1).

Table 1


Evaluation parameter	Parameter control method	Permissible value	Conclusion of Compliance

5.2 Main results of tests of exhaust smoke ventilation systems (Table 2).

table 2

5.3 Main test results of the supply smoke ventilation system (Table 3).

Table 3


Design designation	Functional purpose	Main settings				Conclusion of Compliance
		design		actual
		pressure, Pa	speed, m s	pressure, Pa	speed, m s

6 Conclusions


	OKS 13.220.50

Key words: tests, ventilation

Electronic document text
prepared by Kodeks JSC and verified against:
official publication
M.: Standartinform, 2019

Maintenance work must be carried out in accordance with:

RD 25.964-90 "System for maintenance and repair of automatic fire extinguishing, smoke removal, security, fire and security-fire alarm systems. Organization and procedure for carrying out work"
GOST R 53300-2009 "Smoke protection of buildings and structures. Methods of acceptance and periodic tests."
Decree of the Government of the Russian Federation of April 25, 2012 N 390 “On fire safety regime”. Fire regulations in the Russian Federation.
Other laws, norms and rules approved in the Russian Federation and relevant as of the date of work.

Maintenance of the smoke removal system must be carried out on the basis of an Agreement with a contractor that has a License to carry out the relevant type of activity, by certified specialists in accordance with the approved Work Schedule.

The stage of maintenance of smoke removal systems is always preceded by the stage of Acceptance Testing. Acceptance tests of the supply and exhaust smoke ventilation system are carried out during the commissioning of new construction projects and during the reconstruction of buildings. In this case, a certain list of parameters of clause 6 11 is controlled (see GOST R 53300-2009 Table 1). The specified parameters of smoke removal systems must correspond to the data of ventilation passports (form in accordance with RD 25.964-90, Appendix 5), completed in the prescribed manner by the organization setting up the system. Additionally, during a comprehensive check of the state of fire protection of an object, indicators items 1 - 5 should be subject to control (see GOST R 53300-2009 Table 1).

During maintenance of smoke removal systems ( when checking functionality) the measured parameters are compared with the parameters specified in the Design documentation (protocol of acceptance aerodynamic tests) for the system, drawn up during acceptance tests.

When concluding an Agreement for the maintenance of smoke removal systems, the Contractor conducts an initial inspection of the installations in order to determine their technical condition. Based on the results, an Initial Inspection Report and/or a Defect Statement is drawn up (clause 2 of RD 25.964-90).

The main types of periodic maintenance work are:

Visual inspection- monitoring of the technical condition (operational - inoperative, operational - malfunctioning) with the participation of the senses and, if necessary, control means, the nomenclature of which is established by the relevant documentation, i.e. determination of the technical condition of installations and individual vehicles based on external signs.

Preventative work- scheduled and preventative work to maintain installations in working order, including cleaning the external surfaces of the vehicle, checking their technical condition indoor installation (internal surfaces), cleaning, grinding in, lubricating, soldering, replacing or restoring vehicle elements that have expired or become unusable.

The frequency of external inspection and preventive maintenance is determined (RD 25.964-90):

The frequency and content of maintenance and repair work on individual vehicles is established by the “Industry Time Standards for Maintenance of PA and OPS Installations.”
The frequency and scope of maintenance and repair work may vary by agreement between the Contractor and the Customer, depending on the conditions and service life of the vehicle.

The specified work is reflected in the "Logbook of registration of maintenance and repair work" automatic installations fire extinguishing, smoke removal, security, fire and security and fire alarm system"(form according to RD 25.964-90, Appendix 6).

Functionality check - determination of technical condition by monitoring implementation technical means and installation as a whole of part or all of the functions inherent in them, determined by purpose.

The frequency of performance checks (according to clause 61 of the Fire Regulations in the Russian Federation) is carried out at least once a quarter.

Measured at Functionality check parameters of smoke removal systems are reflected in the aerodynamic test report drawn up. Parameters 6 - 11 must be monitored (see Table 1). At least 30% of the total number of supply and exhaust smoke ventilation systems should be subject to control (clause 3.7 of GOST R 53300-2009 Smoke protection of buildings and structures. Methods of acceptance and periodic tests.)

Based on the results of checking the operability of the system, a certificate is drawn up for checking the operability of the systems and fire protection equipment of the facility (the form of the report is approved by Order of the Ministry of Emergency Situations of Russia No. 292 of May 28, 2012, Appendix 19)

Quarterly inspection of the performance of smoke removal systems is one of the most important activities when carrying out Maintenance smoke removal systems.

Technical examination - carried out after 5 years from the date of commissioning of installations (and further at established intervals) to assess technical feasibility and economic feasibility their intended use (

The test regulations are prescribed in GOST R 53300-2009; the document defines acceptance tests, establishes the frequency for operating systems depending on operating conditions, and recommends methods of protocol registration. Depending on the time of testing, there are:

Performed during the commissioning of reconstructed and new ventilation and smoke removal systems.

The actual circuit design of smoke ventilation is compared with project documentation. The number and installation locations of fans and the installation location of smoke dampers are checked.
The fire resistance of the main and additional equipment with the calculated one, the design of the air ducts and the reliability of the installation of fans are checked.
The air flow removed by the system at maximum loads and the actual value of the supplied pressure are assessed quantitatively. fresh air.

Frequency depends on technical parameters system and operating conditions, but at least once every two years. During periodic checks controlled by:

Actual air flow values directly for each room-corridor.
Air condition on personnel evacuation routes, in elevators and vestibules.
Values of excess fresh air pressure in the context of premises.

They are made taking into account the amended SP 73. 13330. 2012. The changes prohibit testing without creating artificial resistance; for this purpose, 2/3 of the suction openings on the fan are plugged. This measure prevents equipment failure due to low professionalism of maintenance personnel. The new standards reduce deviations from design standards from 10% to 8%.

The information displayed in the document is regulated state standard. The aerodynamic test report for the smoke removal system has the following data:

Introductory part. The object and purpose of the test are indicated, and the methods used are described.
Table No. 1. List of verified indicators and actual results. Has information about the assessment data, the applied measurement and control methodology, permissible deviations and a conclusion on compliance.
Table No. 2. Results of a completed exhaust-type smoke ventilation test. Has information about the design designation of the node or individual element systems, type and functional value, design and actual air flow parameters and the percentage of discrepancy between the result and design data.
Table No. 3. Test results smoke control system supply type. Displays information about the design designation and type of equipment and devices being tested, design and actual pressure and air flow parameters, and a determination of compliance with regulations.

At the end, conclusions are given about the suitability of the system or a list of detected problems and methods for eliminating them. The act must be signed by responsible representatives of the companies.

Sample test report for smoke removal and ventilation systems

It is compiled on the basis of checking the technical condition and operability of the ventilation and smoke removal system. Testing of smoke removal systems is carried out in accordance with the requirements of industry regulations and government regulations. The act must contain a list of activities and links to the documents on which the work was carried out. The city, address, location of the object and date are indicated.

The effective part of the act displays test data and states the suitability of the equipment for operation or the need for repair work. The act is signed by representatives of the customer and the contractor.

Design designation

Functional purpose

Main settings

Residual, %

consumption, m h

consumption, m h

To perform the work, anemometers with an accuracy class of at least 1.0 (for measuring air speed), pressure gauges with an accuracy class of at least 1.0 (for measuring pressure indicators) and a thickness gauge for measuring parameters are required fire retardant coatings. Aerodynamic tests of smoke removal can be carried out when the system automatically initiates operation after a preliminary power outage.

Instruments for measuring smoke exhaust test readings

The value is checked at several points, the number and placement of which takes into account the size and use of the premises. Based on the data obtained, the average value is calculated and checked for compliance with the calculated parameters. The indicators are additionally checked on the smoke intake devices furthest from the fan according to the formula L out = F out * V out * 3600, m 3 / h, Where:

L out– amount of air drawn through the receiver, m 3 /h;

F out– area of the opening for receiving smoke, m2;

V out– velocity of the removed air flow, m/s.

In smoke-free, above-ground staircases, increased pressure is measured in two ways:

the doors are closed, measurements are taken on the top and bottom floors;
The door opens, leading people out of the building.

Number of repeated speed measurements air air should be at least six when using vane-type anemometers and at least ten when using hot-wire anemometers. The measuring sites should be located at the same distance from each other. Permissible deviations from the calculated parameters cannot exceed 15%.

Parameters of increased air pressure for production and industrial buildings is set within:

in staircases 20–150 Pa;
in elevators 20–150 Pa;
in locks 20–150 Pa.

Air pressure indicators in elevators and airlocks are measured with the doors of the elevator halls open.