13.02.2017

The Best Engineering Company offers services in an accredited laboratory. Checking the efficiency of ventilation for Rospotrebnadzor is carried out by qualified personnel, modern highly Technical equipment. After completion of all studies, calculations, a protocol and a conclusion are drawn up according to the current standards.

We work in various industries:

• production shops;
• Medical centers, hospitals, clinics, dental offices;
• Administrative buildings for offices;
• Concert halls and indoor sports facilities;
• Auto shops, workshops for repair, painting;
• Light industry enterprises, factories, production sites;
• Supermarkets, trade pavilions, shops;
• Multi-apartment high-rise and low-rise buildings with natural ventilation and electromechanical ventilation;
• Individual cottages, dachas, villas.

In our work, we are guided by the rules: to do everything quickly, efficiently, in accordance with current state standards.

What is the essence of the SV check?

During the surveys, the results are compared with the design parameters. The main criterion for checking the effectiveness of the ventilation system is the compliance with the speed and intensity of the flows of incoming and outgoing air, the compliance of air exchange with the current sanitary and hygienic standards.

What is the purpose of conducting a performance review of the CB?

When the ventilation project was done correctly, electromechanical devices and systems were selected and installed and adjusted in accordance with the requirements - the operation of the ventilation system is not visible and does not increase the noise level in the premises.

Unfortunately, the work of the system is not always of high quality. The main purpose of ventilation is to create comfort, to provide people with clean fresh air. Poor ventilation results in low oxygen levels. People start feeling weak. With increased dust, vision suffers. Evaporation leads to an increase in humidity, it becomes more difficult to breathe. All these factors are reflected in the poor health of the employee, significantly reduced productivity.

Efficiency testing is aimed at identifying deviations and malfunctions of devices. The purpose of checking ventilation is to debug all operating devices, eliminate negative consequences, due to incorrect network operation.

All control measures are carried out using special tools and devices. Their name is "Aerodynamic testing of the ventilation system".

Using specially developed methods, technical equipment, specialists of an accredited state laboratory measure the actual parameters. Next, the obtained results are compared with the data included in the system design. In the event that such a document is not available, a comparison is made with the standards of sanitary and hygienic parameters for this type of production.

A well-functioning system is important for improving the comfort of work in the enterprise. When the system works with violations and cannot give the desired result, it is better to turn it off. Thereby reducing energy consumption for its operation.

Frequency of surveys

For local supply and exhaust ventilation, the ventilation efficiency is checked every 12 months. General exchange ventilation and air curtains are recommended to be monitored every 36 months. Periodicity and terms are established by sanitary and hygienic standards. Here are some of the current rules:

• clause 6.5 of SNiP 2.1.З.26З0-10 - Obliges to monitor the compliance of the functioning of the IVS once a year.
• SNiP 2.6.1.1192-0Z clause 10.21 regulates the frequency of examination of X-ray rooms - at least once every 12 months.
• In cases where there are no standards for this industry, the old requirements for checking the effectiveness of the ventilation of Rospotrebnadzor for similar types of production should be applied.
• Directive No. 4425-87 prescribes for interior spaces:
• With the release of harmful and chemically aggressive substances, inspections are carried out at least once a month;
• Supply and local exhaust networks - one inspection per year;
• Natural and public networks are checked every three years.

The above standards are sufficient in cases where the entire system is well established and works well. In case of poor-quality commissioning operations and, especially, in the absence of such, most often, TSs operate with reduced efficiency.

The quality of performance also plays an important role. installation work. Errors such as:

• use of aluminum tape;
• a large number of flexible ducts;
• weak low-quality fasteners;
• lack of checking the interfaces of channels and fans;

often result in the system operating below its capabilities.

Taking into account the above. It is recommended that the first ventilation test be carried out before the end of the one year period. The frequency of the next examinations, for air handling units. You can leave or do it more often. General exchange hoods, as a rule, are very stable, their terms of control may be pushed back up to 3 years. Curtains and roof fans can be controlled once every five years.

List of performed works

The list of inspections is compiled by the customer. Increased noise, vibration requires replacement or adjustment of motors. Our laboratory performs standard vibration diagnostics, thermal imaging diagnostics of devices and premises. This innovative technique accelerates the detection of overheating, allows you to find faults in the engine, components, wear of bearings.

Terms of reference for the survey

The terms of reference are developed and approved by the customer. The document defines the composition and scope of the research. Our experts can assist in the development and preparation of the task.

Features of performance of checks of efficiency of ventilation

A feature and the main difficulty is to conduct checks on a working system in an existing enterprise. To perform surveys, it is necessary to agree on a schedule for shutting down the units. Time for measurements.

For example, in shopping centers, it is impossible to carry out control during peak hours, although at this time the CB should work especially intensively. Therefore, all examinations are performed at night.

At facilities where there are flammable and explosive, toxic substances, there are certain restrictions and tolerances.

Methodology

It is regulated by GOST 12.З.018-79. In our laboratory, a methodology for conducting surveys has been developed. It uses innovative modern and traditional high-precision instruments. We are constantly aware of technical achievements and new developments. Our technique allows you to quickly and efficiently perform measurements and provide accurate data with minimal errors.

What does the customer get as a result of the audit

The results obtained are entered in the appropriate columns of the passport of the CB. after completion of all work, a protocol is drawn up. The time, date of the measurement, the data obtained, and the measures taken to correct deviations are entered into it.

At the request of the customer, a table of air exchange rates is additionally compiled. We also present a technical report, with an included list of detected malfunctions and actions taken to eliminate them and restore design standards.

Call!

We are ready to answer all questions, conduct an online consultation. The numbers of our managers are listed at the top of the site. You can also fill out the form with your mobile number, and we will call you back at a convenient time.

TOPIC 11. PHYSIOLOGY OF PHYSICAL AND MENTAL LABOR. HYGIENIC ASSESSMENT OF HEAVY AND INTENSITY OF THE LABOR PROCESS

TOPIC 12. HYGIENIC ASSESSMENT OF THE PHYSICAL FACTORS OF THE PRODUCTION ENVIRONMENT, THE PRINCIPLES OF THEIR HYGIENIC REGULATION. PREVENTION OF OCCUPATIONAL DISEASES CAUSED BY FACTORS OF PHYSICAL NATURE

TOPIC 13. HYGIENIC ASSESSMENT OF CHEMICAL AND BIOLOGICAL FACTORS IN THE PRODUCTION ENVIRONMENT, THE PRINCIPLES OF THEIR HYGIENIC REGULATION. PREVENTION OF OCCUPATIONAL DISEASES CAUSED BY FACTORS OF CHEMICAL AND BIOLOGICAL NATURE

TOPIC 14

TOPIC 15. HYGIENIC REQUIREMENTS FOR WORKING CONDITIONS OF PHARMACY WORKERS

TOPIC 16. HYGIENIC ASSESSMENT OF DEVELOPMENT, LAYOUT AND MODE OF OPERATION OF WHOLESALE PHARMACEUTICAL ORGANIZATIONS (PHARMACEUTICAL WAREHOUSES) AND CONTROL AND ANALYTICAL LABORATORIES

TOPIC 10. HYGIENIC ASSESSMENT OF INDUSTRIAL VENTILATION

TOPIC 10. HYGIENIC ASSESSMENT OF INDUSTRIAL VENTILATION

Purpose of the lesson:explore different kinds industrial ventilation, hygienic requirements for the organization of ventilation of industrial premises of pharmacies; master methods for determining the required air exchange and its multiplicity in various pharmacy premises, hygienic assessment of the effectiveness of ventilation systems.

In preparation for the lesson, you need to work out the following

theory questions.

1. Sources of air pollution in industrial premises of pharmacies. Purpose and types of ventilation.

2. Natural ventilation, organized and unorganized air exchange, aeration. Factors determining the intensity of ventilation.

3. Artificial ventilation. Ventilation systems. Features of the organization of ventilation in the industrial premises of pharmacies with the release of excess heat, water vapor, dust, toxic fumes and gases into the air.

4. Hygienic evaluation of the efficiency of ventilation systems in industrial premises. Determination of the necessary air exchange in various pharmacy premises and its multiplicity.

After mastering the topic the student must know:

Stages of hygienic examination of industrial ventilation;

Determination of the necessary air exchange in various pharmacy premises and its multiplicity;

be able to:

Choose the most effective types of ventilation for specific production conditions in the premises of pharmacy organizations;

Evaluate the effectiveness of natural and artificial ventilation in the premises of pharmacy organizations based on the results of studies for compliance with hygienic standards;

Evaluate the efficiency of ventilation systems;

Use the main regulatory documents and information sources for reference on the application efficient systems ventilation to ensure optimal and acceptable meteorological conditions and air purity in pharmacy premises.

Training material for the assignment

Ventilation in industrial premises is extremely important and effective tool protection of workers' health and disease prevention.

In industrial premises, many technological processes are accompanied by the release of heat, moisture, harmful substances in the form of vapors, gases and dust. Along with this, indoor air is constantly polluted with carbon dioxide exhaled by a person, decomposition products of sweat, sebaceous glands, organic substances contained in clothes and shoes, as well as chemicals released from polymeric materials. To maintain the specified parameters of the air environment in the room, it is necessary to supply fresh air and remove polluted air.

The air of chemical-pharmaceutical enterprises and pharmacy industrial premises can be polluted in the process of manufacturing and dispensing drugs, during chemical analysis prepared drugs. For example, when hanging, dosing, pouring, packaging, chemical analysis medicines in the assistant's, packing room, in the pharmacist-analyst's room, the air is polluted with dust, vapors and gases of medicinal substances. In the washing, distillation and sterilization air may contain excess heat and moisture. Long stay a large number people in the sales area causes changes physical properties and the chemical composition of the air (the

temperature, humidity, carbon dioxide content, number of microorganisms, etc.).

Maintaining the parameters of the air environment in industrial premises that meet hygienic requirements is carried out by various ventilation systems, the design of which takes into account the amount of harmful substances released.

Industrial ventilation occupies an important place in the complex of preventive measures to improve the air environment of industrial premises, aimed at improving the working conditions of workers. Its direct purpose is to combat excess heat and moisture, as well as gases, vapors and dust.

According to the way air moves systems of natural, mechanical and mixed ventilation.

The stimulus for the movement of air during natural ventilation is the pressure of the wind on the walls of the building. (wind pressure), ensuring the movement of air through the room in a horizontal direction, and the temperature difference between the room and outside (thermal pressure), causing the movement of convection air currents vertically and the removal of heated, polluted air through the holes in the upper part of the room.

natural ventilation can be applied in the form through ventilation, carried out due to wind pressure, and in the form of controlled ventilation - aeration. Through ventilation is usually used in industrial premises with a large number of workers and in the absence of harmful emissions (toxic dust, fumes and gases) in the air. Aeration is used only in rooms with excess heat (so-called hot shops) with a heat release of more than 23 W/m 3 . During aeration, outside air enters the room through open window openings and transoms, and polluted air, which carries away excess heat, moisture, industrial dust, is removed from the workshop through upper openings or special devices. local natural exhaust ventilation It is organized in the form of exhaust shafts (pipes) located above the places where hot vapors and gases are released (heating furnaces, forges) and brought to the roof of the building. To increase the efficiency of natural exhaust, deflectors of various designs are installed inside the exhaust shafts.

The stimulator of air movement during mechanical ventilation are special devices (fans, ejectors).

Mechanical ventilation is subdivided according to the direction of the air flow into supply and exhaust. They can be in the form of general (general exchange) and local (local) ventilation. General ventilation is designed to create optimal and acceptable meteorological conditions throughout the room. It is usually used if workplaces are evenly distributed throughout the room, and harmful emissions enter directly into the air of the working area. The incoming air must be distributed evenly throughout the entire volume of the room.

Supply openings for general ventilation, as a rule, air is supplied to the lower (working) zone of the room. Air supply to the upper zone is possible in two cases: if there are constant sources of dust in the room (to avoid the rise of settled dust) and water vapor that can condense in the cool supply air, therefore the air is supplied heated to 30-35 ° C to the upper zone of the room . Local supply ventilation(in combination with aeration or mechanical supply and exhaust ventilation) is used, as a rule, in hot shops in the form "air shower" supplying cool (18? C) air directly to a working person, "air oasis" which is a place of rest for workers fenced with a water film, inside which cool air is supplied, as well as in the form "air thermal curtain"(the flow of warm air is not higher than 50-70? C in the outer doorways of industrial premises and at the outer gates). The speed of air release from slots or openings of air and air curtains should be no more than 8 m/s at external doors and 25 m/s at gates.

Exhaust ventilation is designed to remove polluted air from the premises, for example, from washing pharmacies, the room of an analytical chemist.

General exhaust ventilation removes polluted air from the upper zone of industrial premises. Local exhaust ventilation it is used directly in places where harmful substances are released, which are formed during a number of operations (weighing, dosing, loading, etc.), to prevent their spread throughout the room. Local exhaust ventilation is the most effective way combating excess heat and moisture emissions, gases, vapors, dust. Since the concentration of harmful emissions at the place of formation is higher, the consumption

much less air is required to remove them than with general ventilation.

Local suction must meet the following requirements: high tightness, ease of maintenance, resistance to aggressive environments, low air consumption, high efficiency of trapping harmful substances. Designs of local suctions can be completely closed, half open or open. Closed suctions are the most effective. They capture harmful substances as completely as possible with a minimum amount of air removed. These include casings, chambers, hermetically or tightly covering dusty equipment. In some cases, the sealing of shelters is impossible for technological reasons. In these cases, suctions with partial shelter are used. (pull out drobe) or open: exhaust hoods, exhaust panels, side suctions and other devices. Fume hoods almost completely cover the source of harmful emissions. Only the working openings through which the air from the room enters the cabinet remain open. Hoods are used to trap harmful secretions rising up. Umbrellas are installed over the accumulation of heat and moisture sources and other sources of non-toxic hazards released along with heat. Suction panels are used to remove harmful emissions in the case when the zone of harmful emissions is relatively large and it is impossible to organize a more complete shelter. Onboard suction are installed along the perimeter of open baths containing technical solutions, from the surface of which harmful vapors and gases are emitted. The principle of operation of these suction devices is that the supply air captures harmful vapors and gases and carries them into the exhaust duct.

Features of the ventilation system in pharmacies

In pharmacies, ventilation and air conditioning systems are considered effective if they maintain microclimatic conditions in the premises in accordance with the requirements of sanitary regulations and remove harmful substances from the air of the working area to MPC levels.

In rooms with excessive warmth the most effective is to maintain optimal and acceptable air temperatures as a whole due to general exchange natural (aeration) or mechanical

technical ventilation using local air supply in the form of air showering for individual workplaces. For "hot shops" aeration is the cheapest and most reliable way ventilation.

To ensure the normal thermal balance of the body in rooms with excessive moisture ventilation should help remove excess moisture and prevent the formation of water vapor condensate in the air and on the internal surfaces of the fences. For this, the most rational sealed local exhaust devices in the form of suction. If it is impossible to use them, general exchange supply and exhaust ventilation is used with the supply of heated dry air to the working and upper zones and the extraction of moist warm air from the upper zone of the room.

For removing harmful vapors and gases the most efficient is local exhaust ventilation with supply air supply to the upper zone of the room. If it is impossible to use it, general exchange supply ventilation is used, which, when clean air is supplied to working area(at a height of 1.2-1.5 m from the floor) contributes to the dilution of harmful substances entering the room to the MPC. Extraction of polluted air in these cases is recommended to be carried out from the zones closest to the places of hazardous emissions, and in case of excess heat - from the upper zone, even when heavy gases and vapors are released.

To fight dust The only effective means of dedusting is local exhaust ventilation, which removes dust from the source of its formation. In cases where condensation aerosol is formed or work is not carried out at fixed workplaces, it is necessary to use a general exchange supply ventilation designed to dilute the aerosol.

The rate of suction of polluted air depends on the dispersion of contaminants and the degree of their toxicity (hazard class). Coarse dust is recommended to be removed at a speed of at least 4 m/s, fine dust - 2 m/s. To remove highly toxic vapors and gases, it is recommended to observe a suction speed of at least 1.5 m/s, for low-toxic ones - 0.7 m/s. Dust extraction ducts must not have sharp corners in places where their direction changes and should not be combined with air ducts that remove water vapor or toxic substances, in order to avoid the accumulation of dust deposits and blockage of air ducts.

The ratio of the total amount of supply and exhaust air (air balance)

The air balance is considered balanced if the amount of air entering the room is equal to the amount of air that is removed from the room by exhaust ventilation during this time. If the amount of air supplied to the room in an organized manner is greater than the amount of air removed, increased pressure is created in the room; in this case the air balance positive. Typically, a positive air balance is used in rooms where it is undesirable to get contaminated air from neighboring rooms (“clean” rooms: aseptic block of pharmacies) or cold air from outside. Due to the excess air pressure in the aseptic unit, the movement of air flows will be directed from this unit to the premises adjacent to it. If more air is removed from the room due to exhaust ventilation than is supplied supply ventilation, air balance negative(rooms with harmful emissions).

It is also recommended to create horizontal or vertical laminar flows of clean air in the aseptic unit using special equipment throughout the room or in separate local areas to protect the most critical areas or operations (clean chambers). Clean chambers or tables with laminar air flow should have work surfaces and a hood made of smooth, durable material. The laminar flow rate is within 0.3-0.6 m/s with regular control of air sterility at least once a month.

Air conditioning. Air conditioning is understood as the creation and automatic maintenance in enclosed spaces of the constancy of such indicators of the air environment as temperature, humidity, pressure, gas and ionic composition, smell and air velocity. A device that performs the required air treatment (cleaning, heating or cooling, etc.) is called an air conditioning unit, or an air conditioner. With the help of air conditioners in the premises, the necessary microclimate is provided to create conditions for comfort and the normal flow of technological processes.

Features of the ventilation air preparation system at the enterprises of the pharmaceutical industry

In connection with the introduction of GMP (“Good Manufacturing Practice”) rules at many pharmaceutical industry enterprises, one of the main issues is the preparation of so-called clean production rooms (NWP), or “clean zones”, in which the most critical technological operations for obtaining medicines take place.

Cleanrooms are the main consumer and integral part air preparation systems. Main possible sources air pollution: personnel, equipment, technological process, particles released into the air, forming an aerosol from solid particles suspended in the air, or fog from liquid ones. To remove particles that form aerosols or fogs, a multi-stage atmospheric air filtration system is designed.

One of the main documents describing the method of multi-stage air filtration is the "Typical Ventilation Air Preparation Scheme" developed by the State Scientific Research Center with the participation of GiproNIImedprom, modernized to meet new requirements

in 2002

The air purification system in the proposed scheme consists of several filters: a coarse filter, a fine filter, and highly efficient final filters. After passing through the coarse filter, the air enters the central air conditioner, where it is sequentially heated, cooled and heated again in various stages, then it enters the steam humidifier and through the fan into the fine filter, after which it enters the high-efficiency filter. Then the air enters the clean rooms of various zones A, B, C, D, which are subject to appropriate requirements for the content of mechanical particles with a size of 0.5 microns and the content of microorganisms (Table 46). In this version of the typical scheme, a differentiated return of recirculating air is also carried out, which reduces the cost of air preparation. The system works with two air conditioners.

Table 46Technological parameters of ventilation air in clean industrial premises

Laboratory work "Hygienic assessment of ventilation of industrial premises"

Student assignments

In accordance with the data of the situational task:

1. Select best option ventilation system for specific production conditions.

2. Determine the performance of the exhaust ventilation system.

3. Determine the air exchange rate in the room.

Method of work

Determining the required air exchange in industrial premises

The calculation of the amount of supplied and removed air is carried out based on the amount of harmful emissions to be diluted to acceptable levels. When calculating the air exchange of premises, the flow rate of supply air is determined, which is necessary to absorb excess heat, moisture, and harmful substances.

The required volume of air supplied to the premises during gas emission is calculated by the formula:

If not one, but several different harmful ingredients (vapours, gases) are released into the air of the working area indoors, the calculation of the performance of general ventilation has its own characteristics. So, with the simultaneous allocation to the working area chemical substances that do not have a unidirectional toxic effect, the volume of general ventilation is calculated separately to dilute each component to the MPC.

With the unidirectional action of chemicals simultaneously released into the working area, the calculated air exchange is found by summing the air volumes obtained from the calculation for each substance. At the same time, such concentrations (С) ​​that satisfy the condition are considered acceptable for design:

The required amount of air supplied to the premises during dust emission is calculated by the formula:

The calculation of the supply air required to dilute excess heat during the aeration device is made according to the formula:

If indoor air quality deteriorates only as a result of the presence of people, then the ventilation volume is calculated from the amount of carbon dioxide using the formula:

Determining and evaluating the effectiveness of ventilation systems

Rospotrebnadzor (SES) is responsible for the safety of the population during the operation of real estate. Therefore, this organization does not allow many institutions to work, for example, schools and kindergartens that have not provided an act on checking the effectiveness of ventilation.

This is especially true for new buildings and those establishments where repair work ventilation systems have been replaced. Although this paper does not belong to the category of strict reporting documents, without it the functioning of the school, kindergarten or any other institution where people spend a long time is impossible.

FILES

Every year before the start of the school year, as well as before the commissioning of the facility, such a document is required. At the same time, chemical rooms and laboratories are on a special account. Inspection of these premises can be carried out once every 3 months. This is due to the possibility of a long stay in the air harmful to health substances.

In addition, the preparation of a document is necessary for the operation of industrial, manufacturing and warehouse complexes. No production is complete without it.

legal documents

Supervisory and executive bodies (in particular, Rospotrebnadzor) are guided by a number of documents that are the legal basis for drawing up acts. One of these fundamental documents is the Federal Law "On Sanitary and Epidemiological Welfare" No. 52.

The methods acceptable for testing systems are thoroughly described in GOST 12.4.021-75 or 12.1.005-88. You can also use intersectoral MU for the control of ventilation systems to obtain information.

Who can draw up an act on checking ventilation

The parameters that certain institutions must satisfy are clearly spelled out in SNiP 41-01-2008 or SNiP 41-01-2003 (depending on the specific case and type of building).

All organizations that have an SRO with a permit of 24.14 are suitable for this type of work. (adjustment of ventilation and air conditioning systems).

Sanstation, having carried out the check, enters its result in the equipment passport. Moreover, ventilation equipment can have three types of passport: construction, operational and special passport of the gas treatment plant.

At the same time, one copy of the act is stored in Rospotrebnadzor, one - in the institution itself, in which the check was carried out.

Compilation algorithm

The document should have a title at the top of the page. Below is the name of the object and its actual location (address).

On the right side is the date of compilation (this is the header of the paper). This form is more effective than the protocol.

Then the members of the commission are listed. It is obligatory to have the surname and initials, the position of the person (representative of technical supervision, representative of the construction organization, etc.).

For non-residential premises

For residential and non-residential buildings different forms this document.

For non-residents, it is enough to indicate:

• Chairman and members of the commission.
• The time and address of the facility being tested.
• Technical documentation that is attached to the ventilation system.
• The method by which the function (trial run) and efficiency (individual parameter) were checked.
• It has been established that the ventilation system complies with GOST 13779-2007 or does not comply with it.
• Conclusions and proposals (if any) of the assembled commission.
• Signatures.

For residential buildings, schools and kindergartens, the document requires more detail.

Schools and kindergartens

If large objects with powerful equipment and a large number of them (10 or more) are being checked, then additional electricians may be needed.

In addition, the act must additionally indicate:

• Accurate list of all ventilation equipment.
• The air exchange coefficient and the degree of its compliance with accepted standards are desirable.
• The numbers of the attached drawings.
• Materials and devices with which the test was carried out.
• In the lower part, the seal and signature of the representative of the construction and installation company carrying out the measurements, as well as the signature of the representative of the supervisory organization, are affixed.

Methods for determining efficiency

Ventilation is evaluated both natural and mechanical (plants, equipment). Its effectiveness, depending on the circumstances, is measured both directly - by measuring the speed of the air flow in the air ducts with an anemometer, and indirectly.

The latter method is more complicated, since it requires measuring the concentration of substances and a much more extended list of equipment: a flashlight, a micromanometer, a tachometer, a thermometer, and much more. After sampling, processing of the taken samples in the laboratory will be required.

The Commission is obliged to pay attention to certain parameters and fix:

• Condition and degree of tightness of flexible ventilation elements: casings, housings, belts, drives, etc.
• Microclimate parameters: air flow rate, carbon dioxide content during working hours, ventilation system multiplicity, etc.
• Results of aerodynamic tests (this will require pneumometric holes).

Air exchange coefficient

The value is determined by the formula:

K \u003d (Tu - Tpr) / (Toz - Tpr),

• K - the desired value;
• Tu is the temperature of the air outside the premises;
• Tpr - supply flow;
• Toz - directly in the service area.

According to the norms, in the average classroom, the air exchange coefficient should not be lower than 16 m3 / h, and in the dining room - at least 20. For residential buildings, the requirements are less stringent, but monitoring their compliance is the business of the SES.

The last organization is obliged to familiarize itself with the act before putting the residential premises into operation, and update it after 5 years. But when residents apply (for example, to take the case to court), such a document can be drawn up even earlier than the specified period.

After the descriptive part in the act, a recommendation is possible: what conclusions did the commission draw, are there ways to optimize existing system ventilation, what maximum allowable parameters are acceptable, etc.

Signatures at the bottom of the document are required for all members of the commission.

The Radek company offers comprehensive services for objects of any complexity in Moscow and Moscow Region. We have a staff of experienced staff, as well as all the necessary measuring equipment to verify the effectiveness of this engineering network accurately, thoroughly and in a short time. As a result of the inspection, it is determined whether the ventilation system complies with the current sanitary, fire and other standards, whether the necessary air exchange and other parameters to be controlled are observed.

Our prices

Services provided	Price
(forced ventilation system, 1 cabinet)	5000 rubles
Measurement of the air exchange rate in the room (forced ventilation system, clinic up to 100m2)	12000 rubles
Measurement of the air exchange rate in the room (forced ventilation system in a building/room with an area of ​​more than 100m2) (for every full and partial 100m2)	10000 rubles
Certification of the supply / exhaust ventilation system (for 1 system)	10000 rubles

When are ventilation systems required to be tested?

Measurements of key parameters of the functioning of ventilation systems are necessary in the following cases:

• During commissioning and commissioning. Immediately after the ventilation has been installed, it is necessary to set it up, check and start it up. In addition, new systems are undergoing certification, an integral element of which is a thorough check of operating parameters.
• During reconstruction. Reconstruction can mean both a complete replacement of all ventilation equipment at the facility, and a significant change in the structure (for example, the commissioning of a new air conditioning system, due to which the performance of the entire ventilation network has significantly changed). After the work is completed, measurements are taken to confirm the compliance of the new system with the standards.
• During regular periodic monitoring of equipment performance. In accordance with the regulations in force at various sites, ventilation systems must be checked at regular intervals. General principle: the more dangerous the technological processes and the stronger the safety is related to the efficiency of the ventilation equipment, the more often checks are needed. So, in residential buildings, such an inspection can be carried out once every 3 years, while most industrial facilities undergo the procedure annually. For the same premises where toxic or radioactive substances are used in the technology, even a monthly check may be required.

What parameters are evaluated during testing of ventilation systems?

The specific checklist of checks that will be carried out at the facility depends on the purpose of this facility, technological processes, as well as the composition of the ventilation system. The most typical set includes the following parameters:

• . This is a conditional indicator that characterizes the number of complete air changes in the room per unit of time (usually per hour). The higher the concentration of harmful substances in the air, the higher the requirements for multiplicity.
• Air pressure in ventilation ducts and air ducts (air velocity). This indicator allows you to check the correct functioning of ventilation equipment, including active ventilation units - from a simple in-duct fan to a high-performance chiller.
• Volumetric air flow. At facilities where exhaust ventilation is used, systems of diffusers and air distributors are used; it is necessary to estimate how much air goes into the ventilation grill or exhaust hood per unit of time.
• Separate indicators of the microclimate in the room. It should be understood that testing ventilation systems and checking the microclimate are different types of research. However, some parameters need to be determined in order to evaluate the efficiency of the equipment. For example, the ventilation system is characterized by such an indicator as the air flow rate in the room.

Based on the measurements taken, a conclusion is made about the operation of engineering systems: to what extent the actual indicators correspond to sanitary standards, and whether the ventilation system at the facility can be considered sufficient.

How is the work done?

To check the operation of the equipment, Radek engineers arrive at the facility, bringing with them all the necessary equipment. An electronic balometer that measures airflow, a hot-wire anemometer used to check airflow and temperature, and other equipment can be used to evaluate performance. Electronic devices are used to evaluate the parameters of the air flow in the ventilation ducts and other devices. The work is carried out according to the following algorithm:

• Preliminary study of technical documentation for the ventilation system. If we are talking about new equipment, preliminary calculations are based on project documentation, if the ventilation is existing, the information recorded in the passport of ventilation systems is taken into account.
• Obtaining access by Radek specialists directly to ventilation system. During field studies, all performance indicators are evaluated. The parameters obtained during the checks are recorded in the protocols. If necessary, ventilation ducts are examined. All work on the ventilation system is non-destructive and safe for the equipment.
• Calculation of calculated values. After the field stage, a cameral stage is held, during which engineers calculate the ventilation characteristics and compare them with the standard values ​​\u200b\u200bthat are indicated in the project documentation or passport. Conclusions are drawn about the operation of the equipment and compliance with established standards.
• Registration of the act. Based on the results of the work carried out, a detailed report is drawn up according to the established methodology, in which all certain indicators are given, after which a conclusion is made. If no problems are found, a conclusion is made that all ventilation elements are functioning correctly, and the ventilation system can be used safely and in accordance with the standards. If problems are identified, a list of works aimed at eliminating the identified problems will be recommended.

Depending on the characteristics of technological processes, ventilation checks can be carried out either comprehensively (at the entire facility) or only in some rooms.

Air conditioning and ventilation: is there a difference in terms of verification?

V modern conditions ventilation duct can perform the functions of delivering conditioned air to the premises. At the facilities, central air conditioning is increasingly being introduced, which works inextricably with ventilation.

Therefore, if such a solution is implemented at the facility, the evaluation work must be carried out comprehensively, evaluating all the parameters of the work. The procedure for assessing the efficiency of the system, in the presence of air conditioning units, is somewhat different, since attention is paid not only to air movement indicators, but also to microclimatic characteristics (temperature, air humidity, etc.)

Radek company: your confidence in the correct operation of the systems

Our company combines three key advantages: staff with impressive experience, availability of everything necessary equipment and strict adherence to regulations. As a result, by contacting us, you will receive:

• A smart solution in a short time so that you can use the system smoothly. The act drawn up by our specialists will become a reliable defense against any claims from regulatory authorities.
• Minimum hassle. Our experts know how to work neatly and discreetly, so inspections, even at functioning enterprises, are carried out without significant complications for the business.
• Thoroughness and accuracy of all measurements. We will check every ventilation duct and grate outlet to make sure there are no problems with the systems. Therefore, our verification is not just a formality necessary to verify the protocol, but an opportunity to identify real problems.
• Impeccable documentation. Our reports and acts are easily recognized by government agencies and services, guaranteeing the legal protection of our clients.

To get advice and clarify the details regarding the order of this service, call us right now!