According to EN 1127-1 ignition sources are:
- hot surfaces,
- sparks from friction of metal parts,
- electrical equipment,
- static electricity,
- lightning,
- self-ignition at high air temperature,
- electromagnetic waves.
Explosion protection of vessels
Aligning with MS GOST, ATEX, NFPA standards
Reducing risks and preventing losses from dust explosion
Approval of the explosion protection project with supervisory authoritiesIs your vessel protected securely?
Whatever the vessel is filled with, it is a valuable link in the production chain. Hundreds of tons of free-flowing products per day pass through a variety of vessels: bunkers, containers, silos. Each of them is built in accordance with strict safety requirements. It is necessary to foresee any risks, since not only the company’s income, but also the safety of personnel depends on the stability of the equipment.
Compliance with international standards for explosion safety in the production of free-flowing materials increases your business credibility.
Credibility is a strong backbone for your production. And it is credibility that is worth taking care of its 100% protection.
Risks in the production of free-flowing products
Unfortunately, it is not always possible to prevent all threats to the safety of technological vessels. An empty wood flour or wheat container is often just as dangerous as a full one.
The closed vessel protects your product from theft, contamination, excess moisture or environmental influences. However, such a vessel eventually becomes a potentially explosive atmosphere filled with harmful dust.
Explosive by-product
In the process of loading / unloading or during transportation free-flowing products, as a result of friction, form fine dust. It accumulates on the walls of the tank or the joints of adjacent equipment and at some point reaches an explosive concentration in suspension.
Even with continuous vessel monitoring it is impossible to catch the critical limit of such a concentration. However, it can be measured if an assessment of the explosion hazard of production is carried out in advance.
Vessel explosion protection standards:
- Explosion isolation systems EN 15089:2017
- Explosion isolation systems EN 16447:2017
- Explosion suppression systems EN 14373:2017
- Flameless explosion venting EN 16009:2017
Why does the explosion happen
An explosion in a vessel occurs as a result of a combination of such components under certain parameters:
- Oxygen
- Combustible dust
- Confined space inside equipment
- Ignition source
- Explosive concentration of dust-air mixture
In a matter of seconds explosive combustion fills the entire space of the vessel. If it is connected to other containers for storing or drying free-flowing material, the flame will be active as long as all five components of the explosion are working.
Because of one small spark in the combustible dust, people, machinery, production and raw materials can be affected.
How to avoid destruction of the vessel?
There are two key directions for explosion protection of vessels:
1. Balanced dust-exhaust system.
2. A range of solutions for detecting, suppressing and isolating of flame, as well as the venting of destructive energy outside the tank
Solutions for the explosion protection of vessels are based on indicators that you need to know to develop the comprehensive explosion protection:
- LEL – lowest concentration of dust (g/m3) at which an explosion can occur.
- UEL – highest concentration of dust (g/m3) at which an explosion cannot occur.
- P max – maximum overpressure (bar) in the vessel as a result of the explosion.
- P red – residual pressure (bar) inside the equipment after explosion venting or explosion suppression.
- P stat – pressure (bar) , at which the explosion venting device opens.
- K st – rate of explosion pressure rise within 1 m3 of space in 1 second (bar/m/s).
- Volume (m3) and design features of the vessel.
- Type of free-flowing materials.
Защитить ёмкость и товар от пламени!
Главная задача по взрывозащите ёмкости – обнаружить и подавить взрыв, вывести пламя за пределы контейнера, снизив разрушительное давление. Кроме того, важно защитить персонал, который может оказаться в зоне выхода пламени.
С задачей взрывозащиты ёмкостей успешно справляются три надёжных комплекса решений от чешского производителя RSBP spol. s r.o. и его официального представителя – ATEX.CENTER.
No.1 HRD SYSTEM FOR SUPPRESSION OF THE EXPLOSION
Certified according to standards ТР ТС 012/2011, ТР ТС 032/2013, ТР ТС 004/2011, ТР ТС 020/2011 and EN 14373 How does this work
Special pressure sensors DetEx and optical sensors LumEx 1 or LumEx 4 monitor the indicators inside the vessel for free-flowing materials. When an explosion occurs, the sensors instantly transmit a signal to the control unit, which processes the signal and activates the HRD containers with explosion suppressive agent. The substance of the containers is dispersed inside the vessel, suppressing the flame. HRD system can also work effectively in combination with the VMP explosion venting panel.
Special features
- few milliseconds HRD barrier response from explosion detection to its isolation;
- continuous monitoring and data archiving from sensors;
- variability in dislocation of sensors and HRD containers;
- safe use in closed and open spaces;
- easy replacement of spent HRD containers;
- full compliance with sanitary standards in the food and pharmaceutical industry.
Where is it installed
The HRD system can be used as a stand-alone solution or in combination with the HRD barrier at the junction with the pipeline, VMP panels and FLEX flameless explosion venting in such vessels:
- bunkers;
- separators;
- containers;
- silos;
- filters;
- dryers.
In addition, when protecting the vessels of dust-exhaust systems and their pipelines from explosion, it is recommended to use a special the quick-acting slide valve B-FLAP to isolate the flame.
No. 2 VMP EXPLOSION PRESSURE VENTING PANELS
Certified according to standards TP TC 012/2011 and EN 14797
How does this work
Depending on the volume of the storage tank, the required number of bursting panels of a certain size and shape is installed. With excessive explosion pressure, the panel ruptures, venting the flame outside the vessel into a safe area in open space.
Special features
- flame venting zone – up to 30 m;
- outdoor installation;
- ease of installation and post-installation service;
- possibility of adjusting the static opening pressure;
- a wide range of shapes and sizes;
- resistance to mechanical damage and weather conditionsм;
- high efficiency at high K st
Where is it installed
VMP panels can be used as a stand-alone solution or in combination with the HRD system and FLEX flameless venting devices. VMP panels are widely used in free-flowing materials storage tanks such as:
- bunkers;
- separators;
- containers;
- silos;
- dryers
No. 3 FLEX for FLAMELESS EXPLOSION VENTING
Certified according to standards TP TC 012/2011 and EN 16009
How does this work
Special features
- possibility of installation indoors;
- efficient flameout obstruction and temperature reduction;
- establishment of the secured area for technological equipment, buildings and people;
- hazardous smoke contamination zone – up to 1.5 m;
- suitable for the food and pharmaceutical industry;
- easy installation and replacement;
- the possibility of using in vessels with dust of a high degree of explosiveness (coal, weapons, chemical industry);
- certified for combustible dusts with very low values of minimum ignition energy (MIE) and minimum ignition temperature (MIT)
Where is it installed
Flameless explosion venting devices FLEX can be used as a stand-alone solution or in combination with an HRD system in such vessels for storing free-flowing materials:
- bunkers;
- separators;
- containers;
- silos;
- dryers
We will assess the risks, make the necessary calculations and select an individual turnkey solution for the explosion protection of your equipment.
Why is it worth to install a vessels’ explosion protection system at ATEX.CENTER?
- You will be confident on the explosion safety of your vessels. All the components used in solution have been tested by experienced specialists from RSBP spol. s.r.o. and ATEX.CENTER engineers.
- The explosion protection system for vessels from ATEX.CENTER fully complies with the requirements of international labour protection legislation and explosion protection standards for enterprises.
- All service documentation for explosion protection of vessels is adapted for local markets. ATEX.CENTER provides full service support according to the manufacturer’s standards.
WHAT IS TRUST WORTH?
Estimate the cost of an effective vessel explosion protection solution at ATEX.CENTER.
Compare with the costs of restoring equipment after an explosion, the cost of downtime and compensation for damage to personnel and product.
We are sure that your decision coincides with ours!
The ATEX.CENTER explosion protection mark on your equipment is a guarantee of your peace of mind and the safety of your business!
