Legal background
3/2002. (II.3.) SzCsM-EüM is the regulation in effect regarding the minimum protection requirements for the workplace.
The 6.§ (4) paragraph, point c. states that if ventilation systems are present, prompt and regular cleaning and removal of any accumulated dust is required.
The 6.§ (6) paragraph states that installation and use of ventilation systems requires regular measurements to ensure proper air quality and throughput.
The 6.§ (7) paragraph determines that ventilation systems are considered safety equipment. Thus, their proper functioning is to be ensured by regular safety inspections.
The law relating to worker protection, 1993. XCIII. law 33. §. 1. paragraph states that the employer must take into account the number workers, the type of work performed, and the potential health risks when determining the proper quality and quantity of ventilation required for healthy air and temperature of the workplace.
The MSZ 21875-2: 1990 standard is in effect, and relates to the heating and ventilation requirements of the workplace. The standard states that ventilation systems must be designed such that their operation and modification must not in any way interfere with their regular cleaning.
The MSZ EN ISO 16017-2: 2004 standard is in effect, and relates to sampling and inspection of volatile organic material.
The MSZ EN 12097: 2006 standard is in effect. The standard is connected to the elements of the air duct system with respect to its maintenance.
MSZ EN 12097:2006 mentions the VDI 6022 standards, which state: central ventilation systems with humidity controls must be inspected at least every 2 years. Ventilation systems without humidifiers must be inspected at least every 3 years.
12.2.4.1 dust pollution ratings and limits in the EU.
Air quality at the workplace
Proper air quality at the workplace is not just a hygienic issue, but is a responsibility of the employer. Build-up of bacteria in the system can cause several different diseases. A dirty ventilation system results in air quality that deviates from the norm and thus reduces the level of comfort and, potentially significantly, raises dust levels.
Dust settles on the caloriferes that were installed in the duct or the ventilator, and air volume throughput is thus reduced. This results in a lower efficiency for not only heating the air, but also for regulating humidity levels.
Dirt can also put additional strain on the bearings of fans, reducing their efficiency and eventually creating the need for additional repairs. Bacteria and mold in the humidifier can not only help spread various diseases, but the slightly acidic waste they produce will inevitably speed up the corrosion process.
Along with the technical and hygienic reasons for cleaning ventilation systems, heating and cooling systems, and the duct network, it is also important to keep in mind the related legal requirements, hich necessitate such cleaning and disinfection.
The second step is the cleaning and disinfection of the ventilation system. During the procedure, it is important to use special chemicals that were developed specifically with this process in mind. In addition, the duct system is not only closed, but due to its installation, there are typically quite a few segments where it is inaccessible directly (non-removable ceiling tiles, other utility pipes, etc.). Thus special tools are required to properly facilitate the cleaning process.
In accordance with today’s EU and the EU-VDI 6022 German standards, every filter replacement is accompanied with such an oxidation spray into the ventilators. We recommend this, because it is safe both for humans and animals. It is especially effective against Legionella and Asperfillus-flavus bacteria and mold. These micro-organisms are responsible for the most serious respiratory illnesses, thus it is important to spray the disinfectant each time the filter is replaced. Its regular use kills all viruses, bacteria, fungi, and mold in the air duct. In Hungary, air duct cleaning is typically quite rare and the disinfectant is almost never used, despite the fact that it is MSZ, ÉN regulation.
Dusty air cleaning
The necessity of cleaning round and rectangular dusty air ducts - unless it is clear upon initial inspection - is determined based on the guidelines set forth by the MSZ EN 12097:2006 standards.
Inspection
We examine the building’s air duct network using special cameras, determine the number of potentially necessary new access openings, and then prepare a price quote. he inspections costs 40.000 HUF + VAT. This is only charged if our Customer chooses not to order the cleaning within 3 months after the initial inspection.
Cleaning process
If the necessity of cleaning is not absolutely clear from initial inspection, then ANTSZ (OKK) takes a sample, which is used to determine dust concentration of the surface. First we use our duct cleaning machines to loosen the dust (in both round and rectangular ducts). Next, we use a special vacuum and diffuser to collect the dust into an enclosed, 200 litre dust bag via the access openings. We transport and properly dispose of all dust, which is considered hazardous waste, and include all appropriate documentation.
Work documentation
Photos (and videos upon request) will be given to our Customers on CD documenting the original state and the resulting state of the ventilation system.
Legal background
Provisions contained in paragraph no. 196. § (5) of Ministry of Internal Affairs Decree no. 54/2014. (XII. 5.) on the National Fire Protection Regulations specify that the central ventilation system of residential buildings with a regularly used top floor built higher than 14 meters as well as the kitchen ventilation (extractor) system of restaurants must be cleaned according to the manufacturer's instructions or, in lack of that, once every three years in residential buildings and every six months in restaurants, and the execution of cleaning works must be attested in writing.
Kitchen HVAC cleaning
The necessity of cleaning round and rectangular greasy air ducts is determined based on the rules set forth by the 35/1996 34.§ (4.) OTH regulations.
Inspection
We examine the building’s air duct network using special cameras, determine the number of potentially necessary new access openings, and then prepare a price quote.
Cleaning process
The ducts’ current state, its size, its attributes, and the ease of access will all influence the specific process. This might mean hand or machine cleaning. Machine cleaning can be done with steam cleaning or using the dry-ice process During the steam cleaning process, the pre-washed and closedoff round or rectangular duct is flooded with 150 degree C steam. The specific content of the prewash chemicals are determined by the type of pollution in the duct. All chemicals we use are safe and have the appropriate documentation. The steam dissolves the grease which we then flush from the system after it turns into liquid form.
Work documentation
Photos (and videos upon request) will be given to our Customers on CD documenting the original state and the resulting state of the ventilation system.
Legal background
Provisions contained in paragraph no. 196. § (1)(2) of Ministry of Internal Affairs Decree no. 54/2014. (XII. 5.) on the National Fire Protection Regulations specify that (1) any activity which carries a risk of explosion can only be performed if adequate ventilation is ensured;
and (2) ventilation equipment must be cleaned in accordance with the manufacturer's instruction if there is a risk of deposition of highly flammable and explosive material or if such a material is present.
Technology exhaustion (oil, dust, screens)
Particularly at manufacturing companies, there is a risk of residue accumulation in the exhaust pipe networks, involving a wide variety of contaminants, such as oil, grease, dust, resins, wax, paint, flammable materials or emulsion. These contaminations may endanger safe operation and production processes by decreasing the efficiency of exhaustion and leading to possible product failure. In addition to that, accident, fire and explosion hazard is increased in such situations. The cleaning of such installations is not a rutine task, and therefore requires thorough assessment and preparation.
Dry Ice Cleaning
Keeping fans, caloriferes, and heat-recycling systems clean significantly increases their life-span, effectiveness, and energy-efficiency. Inspection: We inspect the number of fans, caloriferes, and heat-recycling system’s m2 that need to be cleaned.
Cleaning process
With the dry-ice method, we spray dry-ice granulate throughout the duct using variable highpressure air. The quantity and pressure can be set such that it protects even the most delicate of surfaces, while still providing an effective way to remove even the most stubborn pollutants. The -80 degree C dry-ice granulate gives the grease pollutants a “cold shock”, which thus contract and fall off due to the evaporating gas. The dry-ice heats up and evaporates completely while the pollutants are now loose and easily removed. After cleaning, the surface is completely dry, and does not require any additional handling. The evaporating carbon dioxide has no negative environmental effects. Following the cleaning process, the systems are once again capable of performing at the efficiency and capacity for which they were originally designed.
Work documentation
Photos (and videos upon request) will be given to our Customers on CD documenting the original state and the resulting state of the ventilation system.
