If the pressure and flame are not relieved, the vessel or system can be ruptured, causing the products of the rapid combustion to be released uncontrollably, causing widespread damage to plant and personnel. Explosion venting must be directed to a safe area where the vented flame width and length are calculated and taken into account or alternatively, flameless venting using (eg Brilex IndoorVents) or Flameless Explosion Relief Valves (eg Hoerbiger EVN) may be considered.

The calculated explosion vent area is dependent on the geometry of the equipment being protected, the product explosion characteristics of the product Kst (max) or Kg (max) and Pmax as well as the pressure shock resistant strength which is related to Pred (maximum overpressure during a vented explosion. The required effective relief area for isolated enclosures can be calculated using the most recent editions of internationally recognised NFPA 68:2018 and EN 14491:2012 (Adopted formulas from VDI3673) standards, depending on your requirements. The “Australian Code of Practice for Handling Combustible Dusts” AS/NZS:4745:2012 which requires the use of certified explosion vents allows you the choice of which of the above standards and methods to use.

IEP Technologies – BRILEX Explosion Vents / Bursting Discs (part of the Hoerbiger Safety Solutions Group) is exclusively represented by CMC Technologies in Australia, New Zealand, and Oceania. IEP-Brilex explosion vents combine safety and shorter opening times.

The lightweight and simple construction guarantees a quick and safe opening of the disc. The higher service life enables their use under the hardest conditions. This can be as high as a “sixty-fold” benefit compared to traditional triple-section designs that are now “out-of-date”.

Venting of dust explosions has been practiced for more than 50 years and provides cost-effective protection for facilities where dust explosions can occur. When specifying explosion vents, the immense impact of pressure waves and flame propagation in the outside area needs to be considered. Explosion relief must therefore be directed to a safe area. IEP – BRILEX – Explosion Vents are specially designed for the relief of dust explosions. By early relief of an incipient explosion, IEP Technologies – BRILEX Explosion Vents protect people and industry worldwide.

IEP Technologies – Brilex explosion vent panels are designed, manufactured, tested, and certified to open at a predetermined pressure (Pstat), to allow the fireball and explosive pressure to vent to a safe area. Explosion Vents are available in a full range of sizes, configurations, and opening pressures. Depending on the specific application, explosion vents are available in flat, multi-layer, and domed configurations to provide the right protection solution. Suitable for a very wide range of explosion parameters ranging from very high Kst values down to very low Pred levels, engineered and selected correctly explosion venting can serve as the simplest protection method. Explosion isolation must also be considered in order to reduce the risk of flame propagation to interconnected vessels or the plant itself. EN14491:2012 stipulates under what conditions explosion isolation may or may not be required for interconnected vessels.

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Thorwesten Vent offers automatically re-closing explosion doors and explosion diverters.

These devices are used for explosion venting of silos, filters, and other process vessels – limited pressure shock resistant, explosion vent-equipped silos – devices inhibiting accelerated flame front- and pressure shock propagation through ducts (explosion doors in strategically chosen positions) and devices out-diverting flame- and pressure shock effects from ducts (explosion diverters).

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IEP Technologies / Hoerbiger Safety Solutions presents the explosion relief valve type EVN 2.0 and EVN 3.0,  flameless explosion vents of the next generation. Certified according to EN16009 – Flameless explosion venting devices.

The IEP Hoerbiger EVN 2.0 and EVN 3.0 valves are truly ground-breaking explosion relief valves and flameless explosion vents. These innovative valves are designed with a low-mass valve plate and a low response pressure, enabling them to react swiftly in the event of an explosion. Within fractions of a second, these flameless vents spring into action, effectively mitigating the risks associated with explosions.

One remarkable feature of the IEP Hoerbiger explosion relief valves is their ability to prevent any flames from escaping. Additionally, thanks to their quick reclosing mechanism automatically or manually, there is no air influx after the explosion, ensuring optimal safety. Furthermore, these valves seal completely after reclosing, guaranteeing an airtight seal.

Whether it’s horizontal or vertical installations, these valves can be operated in any mounting position. Their user-friendly design makes them easy to install, saving valuable time and effort. As an added benefit, they require minimal maintenance, making them virtually maintenance-free.

The IEP Hoerbiger EVN 2.0 (superseded by EVN3.0) and EVN 3.0 valves provide an exceptional level of safety and efficiency, effectively reducing the chances of secondary explosions and the need for costly replacements.

IEP Technologies / Brilex IV8 Flameless Explosion Vent for the passive explosion protection – flameless explosion venting device has superior net relief areas due to its patented design. The IV8 Flameless Explosion vent offers a specialized solution for process vessels located indoors or in areas where traditional explosion venting is not safe.

In such cases, flameless explosion vents serve as the optimal protection solution. When an explosion happens, the venting device opens and safely releases the explosion pressure and flame through a flame arrester. By doing so, it effectively cools the hot gases and extinguishes the flame. The IV8 model employs a robust carbon steel coated frame that encloses a reliable stainless steel explosion relief vent and flame-arresting mesh. Additionally, it comes equipped with an integrated vent burst detection sensor, allowing plant personnel to promptly respond in the event of an explosion occurring within the protected application.

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