EXTRACTION SOLUTIONS

Automotive workshops

Exhaust gas extraction

+ Customer-oriented solutions for many applications

Excellent service

+ Short delivery times

More than 50 years of success on the market

Reliable partner of the specialised trade

At Geovent, we care for people

“We help to prevent the individual worker from getting sick from going to work.”

Our mission is clear and as we have defined in our ESG policy we want to run Geovent in harmony and balance with our stakeholders and the society at large.

Our starting point is the applicable legislation, with which we always comply. Furthermore, we continuously work to support the United Nations 17 Sustainable Development Goals to the extent possible.

The SDG target No. 3 concerns “Good health and well-being” which we support internally as well as by developing and supplying products, which can remove harmful substances from workplaces.
There are many organizations as well as governments that are trying to do regulations in working environments and familiarize with potential threats regarding fume, gases, and dust in working place, but sometimes it is not enough. Further, with this article, Geovent wants to increase awareness of the consequences of exposure to pollution in the workplace.

Welding fumes

Welding fumes contain a mix of gasses and airborne particles which may be harmful to the body. Examples of these particles are metal oxide and flux, which can cause illnesses if inhaled. The gasses can include carbon monoxide, ozone (especially when welding aluminum), and shielding gasses like argon and helium.


The possible impact on the body:



The health impact depends on the type and amount of fume and for how long one is exposed. Occasional hobby welding outside is unlikely to cause health problems. However, welding for extended periods inside without proper extraction can cause some serious short-term and long-term issues.


Short-term issues may include but are not limited to:

  • Respiratory problems, such as reduced lung function and irritation of the throat and lungs
  • Metal fume fever, which is similar to the flu and can be caused by fumes from welding galvanized metals, and on some occasions mild steel.

 

However, just like there are short-term problems, there are also long-term ones. Long-term effects include but are not limited to:

  • Asthma caused by the nickel and chromium VI from stainless steel.
  • Cancer caused by the nickel and chromium VI from welding stainless steel, and other specialist metals that contain cadmium or beryllium.
  • Damage to the nervous system caused by the manganese in welding rods.
  • Pneumonia Several studies have shown an increased risk of pneumonia and death among welders and other workers exposed to metal fumes and mineral dust. Research suggests exposure to metal fumes might increase susceptibility to lung infection, even with common, relatively harmless infectious agents. Furthermore, iron oxide deposited in the lungs after inhaling welding fume has been found in the lungs for years, even after removal from exposure.
  • Welder’s Anthrax: Welder’s anthrax is defined as pneumonia in a metalworker caused by bacteria within the B. cereus group that produces anthrax toxin.


We recommend at Geovent that welding fumes are extracted at the source, to prevent people from getting sick from going to work. The equipment used should be constructed in such a way that the welder will not start welding without the extraction starting. In the process the exhausted fumes must be filtered, so that the environment will not be polluted by harmful substances.

If you are not convinced about this, please note the following:



• Acute exposure to welding fume and gases can result in eye, nose, and throat irritation, dizziness, and nausea. Workers in the area who experience these symptoms should leave the area immediately, seek fresh air and obtain medical attention.



• Prolonged exposure to welding fume may cause lung damage and various types of cancer, including lung, larynx, and urinary tract.



• Health effects from certain fumes may include metal fume fever, stomach ulcers, kidney damage, and nervous system damage. Prolonged exposure to manganese fume can cause Parkinson–like symptoms.



• Gases such as helium, argon, and carbon dioxide displace oxygen in the air and can lead to
suffocation, particularly when welding in confined or enclosed spaces. Carbon monoxide gas can form, posing a serious asphyxiation hazard.

Exhaust from vehicles

Vehicle emissions, particularly diesel, are a serious problem. People with some of the highest work exposures include heavy machinery operators, farmers, garage workers, mechanics, military, fire station and train station workers.

The exhaust from automotives is a source of harmful substances to people exposed to it. This happens in the environment in general but for workers like mechanics in workshops where automotives are repaired and serviced, the concentration of harmful substances is potentially high.

Therefore, the protection of these workers is important.



One of the harmful substances is Carbon monoxide (CO) which is a colorless, odourless, tasteless, poisonous gas produced by the incomplete burning of carbon-based fuels like gas, petrol, wood and coal. Signs that indicate incomplete combustion is occurring and CO may be produced include. The most danger is diesel, a type of fuel derived from crude oil. Diesel exhaust is made up of 2 main parts: gases and soot (particles). Each of these, in turn, is made up of many different substances.

  • The gas portion of diesel exhaust is mostly carbon dioxide, carbon monoxide, nitric oxide, nitrogen dioxide, sulfur oxides, and hydrocarbons, including polycyclic aromatic hydrocarbons (PAHs).

 

  • The soot (particulate) portion of diesel exhaust is made up of particles such as carbon, organic materials (including PAHs), and traces of metallic compounds.

In studies of cells done in lab dishes, vehicle exhaust (as soot or chemical extracts) has been found to cause changes in the cells’ DNA. These types of changes are usually needed for cancer to develop, although not all substances that cause DNA changes also cause cancer.

Several studies have found that long-term, heavy exposure to diesel exhaust can cause lung cancer in lab animals such as rats. Lung cancer is major cancer thought to be linked to vehicle exhaust. Several studies of workers exposed to exhaust have shown small but significant increases in the risk of lung cancer. Men with the heaviest and most prolonged exposures, those who have daily contact with exhaust, have been found to have higher lung cancer death rates than unexposed workers. Based on the number of people exposed at work, vehicle exhaust may pose a substantial health risk.

Guidance regarding preventions

There are a number of possibilities when you want to protect workers from getting sick from going to work. One of the most important engineering controls can include the installation of Geovent local exhaust ventilation to capture fumes and gases at the source as well as regular inspection and cleaning of ventilation and dust collection systems.

Metalworking production

Metal dust is harmful to the lungs if inhaled for any length of time. But doing so for a long time can increase the risks significantly. Constant exposure can weaken the lungs’ natural defense system, which is designed to prevent foreign particles from settling within. Therefore, dust particles can rest in the lung tissues, usually in the air sacs or airways, where they might do damage.

Persistent exposure to metal dust can cause a variety of respiratory problems.

Aspirating iron particles in the form of dust or fumes leads to siderosis, a lung condition also known as welder’s lung or silver polisher’s lung.

Long-term exposure to silica, a mineral found in ores and rocks like quartz, can cause occupational lung disease known as silicosis. If precautions aren’t taken, people working in industries where silica is present are more likely to get this disease.

Pneumoconiosis is a catch-all name for interstitial lung disorders caused by inhaling mineral dust, which includes all of the aforementioned conditions. These illnesses cannot be cured, but there are a variety of effective treatments accessible to people who suffer from them. Medication, oxygen therapy, and behavioral modifications like giving up smoking are examples of standard medical care.

Remember that inhalable enter the body through the mouth, throat, and nose and are readily visible. Smaller particles of respirable dust can penetrate deeper into the lungs. Both can be damaging, but respirable dust poses a greater risk. Small particles of inhalable dust that settle in the nose and mouth are inhaled and then inhaled deeply into the lungs. The two kinds of dust ultimately end up being absorbed by the body’s cells and soft tissues. Your health will suffer as a result of this.

Fumes and dust from construction

Working with different materials during construction processes like house building, or in manufacturing of these materials, risks for deceases are present.



E.g. you can find isocyanates in a number of construction products including polyurethane paints, coatings, foams, glues and flooring. Certain tasks, such as spraying, can produce very high exposure to isocyanates. This may irritate the eyes, nose and throat, dermatitis and asthma. Asthma in particular is a significant risk for workers spraying isocyanates
Spraying isocyanate products is a significant cause of occupational asthma. Symptoms can develop immediately following exposure but can also appear several hours later outside working hours in the evening or early morning. Early signs of respiratory sensitization to isocyanates include one or more of the following:

  • Chest tightness
  • Persistent cough
  • Wheezing
  • Breathlessness
  • Flu-like shivers

If your isocyanate exposure continues, you may suffer from permanent and severe asthma for which currently there is no cure. This can have life-changing consequences. Even a tiny amount of any isocyanate could trigger an attack. It would almost certainly mean you would have to give up this type of work.

In the same way, construction dust is not just a nuisance, it is a real risk to one’s lungs. Regularly breathing construction dust can cause diseases like lung cancer, asthma, Chronic Obstructive Pulmonary Disease (COPD) and silicosis.

In the production of these materials and their use of it, Geovent recommends extraction at the source. Where this is not possible the best possible personal protective equipment should be used together with a general extraction e.g., by using a hood above the place where the harmful substances are in use.

Extraction guide

This table suggests which amount of air you should use,
depending on the application.

ProcessAir flow per outlet
[m³/h]
Hose dimension [mm]Air velocity in duct on unfiltered side [m/s]
Suitable Geovent products
Grinding dust150ø8020 – 25ASA arms, MEF and MHF fans, GFB2 filter, HVU units
Welding fumes1.000ø16010 – 15ASA, ESA and Wing arms, GFB2 filter, MEF and MSFG fans
Exhaust gas <3.0L engines400ø10010 – 15GTE and GTS hose reels, channel duct, MEF, MSFG
Exhaust gas >3.0L engines1.000ø15010 – 15GTE and GTS hose reels, channel duct, MEF, MSFG
Exhaust from trains2.000 – 6.000ø200 – ø40010 – 15ø200 and ø250mm hose reels are available. Fixed or telescopic hood solutions are applied in ø315 and ø400mm applications
Exhaust from emergency vehicles
Smaller vehicles
400 – 600ø12510 – 15MRS Rail System, MRSP Rail System, PRS Rail System
Exhaust from emergency vehicles
Larger vehicles
1.000ø15010 – 15MRS Rail System, MRSP Rail System, PRS Rail System

Why choose Geovent?

Our company has existed for more than 50 years and has a
passion for extraction and filtration technology.

Customer-oriented solutions for many applications

Based on the needs of each customer we find effective and cost-efficient solutions

Excellent service

Our technical sales people internal and external is ready to serve you, and we offer you various documentation online.

Short delivery times

With a well-stocked warehouse of raw materials and finished goods, we are able to deliver within a short time after receiving an order.

Reliable partner of the specialized trade

We work closely with installers and distributors across the country, supporting them with advice and documentation for their needs.

A short video on exhaust fumes

The video shows an example of how quickly our extrication system is decoupled when the emergency vehicles is leaving the garage

Product range

Below you will find some of our well-known and recognised extraction products.

Click the products to read more or visit our website to get an overview of our entire range.

Hose reel

Hose reels GTE – electric driven

Hose reel type GTE – electric driven. With a wide selection of nozzles, types of hoses, and accessories.
Width: 750 to 1400 mm
Dim.: ø80 to ø200 mm
Length up to 15 meter

Hose Reel wall

Hose reels GTS – spring driven

Hose reel type GTS – spring driven. With a wide selection of nozzles, types of hoses, and accessories.
Width: 750 to 1000 mm
Dim.: ø80 to ø150 mm
Length up to 10 meter

Suction channel duct for exhaust gas extraction

The channel duct

The channel duct type 35. Flexible and efficient to be used in various applications. A wide range of accessories are available.

Exhaust nozzles

A wide selection of nozzles for connecting hoses to exhaust pipes of cars, trucks, wheel loaders, caterpillars, fire trucks, tanks, and any other vehicle

Extraction arm with internal carrying arm.

WING arm

Extraction arm with internal carrying arm. Dim.: ø160 and 200 mm. Length: 2 to 9 m.

LEF-MEF Fan

LEF-MEF Fan

Extraction fan. Corrosion resistant. Energy saving. Airflow: 700 to 24.100 m³/h. Pressure: 200 to 4500 Pa

HVU

HVU

Our High vacuum units, for Industrial and Heavy Duty use, are used for the preparation of cars, extraction of grinding dust, welding with extraction at the torch etc. Various options are available.
Pressure: Up to 35.000 Pa
Air Volume: Up to 2.600 m³/h

Extraction arm for glue fumes

Glue-fumes

Extraction solutions for glue and other fumes based on the WING arm Extraction arm for glue fumes The GEOVENT glue

Our customers

We serve large and small customers throughout the World and offer you
the opportunity to get in touch with them and learn from their experience in working with us.

"Geovent offers high quality Danish products. The service is top notch with fast delivery and help when we need it."
Jesper V. Jensen
Stenhøj
”Geovent has perfect extraction, they give us super advice which resultet in a perfect result.”
Sámal Trolle
Sp/f Rock Trawl-doors

We look forward to serving you
in person, by telephone or online

Send us a message now and we will return to you without delay.

Tlf: +45 86 64 22 11 – E-mail: salg@geovent.dk

The Geovent sales team

Exhaust Gas Extraction: Efficient Solutions for a Healthier Workplace

If you’re looking for effective solutions to ensure a healthier and safer workplace, exhaust gas extraction should be high on your list. Exhaust gases are harmful to both workers and the environment, and proper extraction is crucial for compliance with workplace health and safety regulations.

At Geovent, we provide a comprehensive range of exhaust gas extraction systems that can meet the specific needs of your workplace. An example of this could be our GTS and GTE hose reels, we produce them in different lengths and diameters, making them suitable for anything between moped/scooter to diesel train repair and maintenance workshops. Our team of experts will assess your facility and recommend the most suitable solution for your operation, ensuring you have a safe and efficient system in place.

Our exhaust gas extraction systems are designed to effectively remove harmful fumes and gases from your workspace, exhaust gases, welding fumes, dust, smoke, and toxic harmful substances. With our innovative technology, we can extract gases at the source, preventing them from circulating in the air and posing a risk to workers’ health.

We offer a variety of extraction solutions, including fixed and flexible extraction arms, hose reels, and channel duct systems for moving vehicles such as emergency vehicles, all designed to meet the highest industry standards. Our systems are easy to use and maintain, with minimal downtime, ensuring your workplace remains safe and productive.

At Geovent, we understand the importance of a healthy and safe work environment. That’s why we provide our clients with top-quality exhaust gas extraction systems that are reliable, cost-effective, and tailored to their specific needs. Contact us today to learn more about our services and how we can help improve the air quality in your workplace.

Frequently asked questions

Below you will find answers to some of the most common questions which we receive from customers.
If you have other questions, please do not hesitate to contact us.

Yes! We have our channel duct system, made for moving vehicles, or moving work areas.
We also have our PRS and MRS(G) systems, made for emergency vehicles start up inside the garage and drive out.

We have made a line specifically for emergency vehicles where the extraction nozzle disconnects automatically and moves out of the way as the vehicle exits the garage.

Vehicle exhaust fumes can irritate the eyes and respiratory tract, and are a risk to health by breathing in. Carbon-fuelled engine fumes contain carbon monoxide, a poisonous gas. Prolonged exposure to diesel fumes, especially blue or black smoke, may lead to coughing and breathlessness. Long-term repeated exposure to diesel fumes over a period of about 20 years may increase the risk of lung cancer.

Exhaust fumes can quickly reach harmful concentrations, particularly from cold or intermittently run engines (when run indoors without exhaust ventilation). Don’t rely on catalytic converters to run engines safely indoors. They are less effective when exhaust gases are relatively cool, eg from vehicles idling for long periods or used intermittently for short periods. Catalytic converters do not remove toxic oxides of nitrogen.

Keep the workplace well ventilated. Connect an exhaust gas extraction system to the vehicle tailpipe when idling, particularly when working in a vehicle inspection pit. It should ventilate to a safe place in the open air – where fume will not be drawn back into the workshop or affect other premises or people nearby. Maintain couplings and flexible connections in good condition to prevent leaks. You should not rely on vehicle access doors being left open to provide ventilation as in winter these will be kept closed.