Dust explosion risks

Dust explosion is not an everyday event; however the risk should not be underestimated. Frequent consequences include extensive damages to the technological devices and buildings; however the explosions pose a risk to health and lives of employees.

What is explosion?

Explosion means rapid burning (oxidation), with increased growth of temperature
and pressure. It can occur when explosive atmosphere mixes with a source which can
ignite it. The risk is present basically in all industrial branches.

Is your plant exposed
to dust explosion risk?

If your business is a branch of industry, the answer is ‘YES’. The explosion is present in all places with transported, stored, and processed dust. The hazardous operations also include dust handling, and handling of substances with minor dust part. Dust which forms explosive atmosphere in the mixture with air includes brown and black coal, lignite, sulphur, carbon, resin, biomass, cereal and related products, sugar, dry milk, bone and meat powder, fodder mixtures, plastic materials, metal dust (aluminium, magnesium, titanium, zinc, and their alloys), and other similar substances.

The explosion hazard cannot be eliminated in environment with waste gas presence. Limit concentration of oxygen depends on many other operation conditions such as temperature. If the initiation source is present in such environment, the explosive atmosphere will be activated. The most frequent sources include sparks of mechanical origin, hot surface, flame or hot part, electrostatic discharge or electrical devices. Some initiation sources cannot be completely excluded from the operation or with great difficulties.

Is it possible to eliminate the explosion hazard from a device or operation?

Certainly yes. The goal of the safety system is to limit the explosion effects to acceptable level. It is our field of business. We use safety systems which we design, test, and produce.

We will help you become a responsible employer or a business person, and you will not expose property or employees to hazards resulting from damage to property, health, and in some cases loss of good name. Explosion is not just a theoretical risk. In the first place, the protection is a sign of high level of responsibility and positive approach to provide safe operation.


We secure
all industrial operations

Dust explosion is impending practically in every branch of industry.
Everywhere you store, transport, process, and handle dust or substances with its
significant share. Safety system against dust explosion is required not only
as prevention to the property damage, and also as protection of health and life
of employees or the maintenance the company good name.

Typical operations with the risk of dust explosion are heating plants, power plants, mills, sugar refinery,
production of fodder mixtures, silos, production of plastic materials and furniture, and powder paint shops.
The risk operations or their parts with present mechanical and pneumatic transport, crushing and grinding
of material, drying and mixing, aspiration or separation of dust, dust storage or storage of materials
with its high share. In such operations, the risk of dust explosion is present most definitely,
at least in some parts of the operations or in some device.




Power plants, heating plants, waste incinerators, biofuel production, fuel preparation, biomass processing, cement plants



Breweries and malt plants, sugar plants, production of sweets and biscuits, production of instant products, bakeries, distilleries and liqueur production, milk drying plants


Chemistry and

Production of polystyrene, production of plastic materials, production of fertilizers, production of powder paints and pigment, processing of sludge, production of medicines.


Wood processing

Paper plants, production of pellets, production of wood chips, production of furniture


and aviation

Production of car parts, production of plastic die-castings, processing of casting



Mills, cereal cleaning, post harvest cereal lines, production of fodder mixtures, tabaco industry, rendering

We secure
all devices

Dust explosion cannot be completely eliminated in industrial branches
which are not directly included in the risk category. Many devices forming a part
of the operation pose a real hazard. It includes typical mills, crushers, filters, separators,
elevators, pneumatic transport devices, tanks, and silos, cyclones, and driers.


Grinding, mixing,
and crushing

Mills, crushers, hammer mills,
squeezers, mixers


and sorting

Sorters, separators,
screening machines, cyclones


and drying

Silos, storage tanks,
drying plants, milk driers



Filters, cyclofilters, industrial vacuum cleaners, aspiration



Screw conveyors, Redler conveyors, elevators, shaftless conveyors, powder transporters, down flow pipes



Mixers, malaxators, rotapulsers,
scales, reactors…

Become a responsible business company and secure your
operation or device from explosion Protect your property,
lives of employees, and good name of the company.

Contact us


We design and produce

our own safety systems to secure
the devices and operations
against dust explosion.

Safety systems

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VST Engineering

VST Engineering, spol. s r.o.
Semtín 79, 533 53 Pardubice
Czech Republic