Brilex Bursting Discs – Explosion Vents

BRILEX Explosion Vents combine safety and shorter opening times. The light-weight 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 This can be as high as a “sixty-fold” benefit compared to traditional triple section designs that are now “out-of-date”.

Explosion Relief Venting
Venting of dust explosions has been practiced for more than 50 years and provides the best 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 need to be considered. Explosion relief must therefore be directed to a safe area.

General
BRILEX – Explosion Vents are specially designed for relief of dust explosions. By early relief of an incipient explosion, BRILEX Explosion Vents protect people and industry worldwide.

Designs and Applications
BRILEX provides the appropriate bursting disc depending on the application. The wide range of discs available is divided into three standard types that can be adapted for the customer’s specific requirements.

Catalogue: (click to download)
· Brilex Venting Solutions Catalogue

BRILEX – GE is the best choice for Filter / Dust Collector  installations with pneumatic cleaning systems and a very high vacuum operation. These applications require explosion vents that reliably withstand vacuum and positive pressure cycling.  The Brilex GE is a domed single section design that enables negative pressure resistance without the need for a complete sectional vacuum support. Standard GE features are a wide range of sizes, pressure spike control , high vacuum resistance , high recommended operating to burst pressure ratio and 100% venting efficiencies up to Kst 250 Bar.m/sec.

If the negative pressure is not greater than 50% of the rated rupture pressure and the pressure cycling is not severe, installation of a domed vent has no extra benefit. For this application the Brilex KE is an alternative to the domed GE. The BRILEX – KE provides long durability and aerodynamic advantages compared to the domed type, for example in cyclones. Pressure spike control, cross rib stiffening, folded edges, slits in the flange area are standard KE design features. Type KE can also be manufactured / rolled  in a curved configuration to match the diameter of the vessel. Venting efficiencies are generally 100% throughout the size range and available with Values of Pstat down to 0.02 bar.

You can see a BRILEX – KE with special flanges here. These are particularly suitable for the food industry. Strict hygiene regulations apply in this field. But they don’t make employing explosion vents more difficult. The prevention of product deposits and the optimised flange attachment as well as FDA-compliant seals are common requirements in this industry and may easily be realised. Inherently stable rounded explosion vents in conjunction with specially welded-in flanges are perfect for cylindrical systems.

BRILEX type KER is suitable for plant equipment with static over or under pressure conditions up to 50% of the rated rupture pressure. Edge reinforcement in its design allows the KER to be mounted without an outlet flange. Cross rib and folded edges are other standard KER design features. The KER is suitable for bucket elevators , conveyors etc and similar equipment for non pressurised applications or applications with very mild to no process pressure variations.

Brilex Type RAD – Vent Duct Covers

The Brilex Vent Duct Cover enables isolation of the vent duct downstream of the explosion vent. The Vent Duct Cover is designed to open at less than 0.1 bar burst pressure. The explosion vent lcated on the equipment needs to be set at 0.1 bar or higher. Vent duct covers prevent ingress of moisture, particulates, rain , snow or birds that may enter the vent duct. At the same time the Brilex Vent Duct Covers do not hinder the dust explosion and open similar to an explosion vent. The Vent Dcut Cover has an integral flange and just bolts on at the end of the duct.

By using BRILEX Explosion Vents in combination with a unique BRILEX Ceramic Filter, economical venting of dust explosions is possible. When the vent opens during an explosion, the ceramic filter retains the dust and cools down the hot gases.

Times have changed since explosion quenching systems had to be thrown into the waste bin after single use. The BRILEX IndoorVent can be re-used after changing the filter cartridges and the explosion vent. Maintenance time of approximately 30 minutes is only needed before it can be used again. BRILEX guarantees this after each dust explosion.

Due to high investigation costs and bad efficiency, design engineers and end users tried to find alternatives. The BRILEX IndoorVent offers a combination of a fast opening BRILEX Explosion Vent with a high efficient ceramic filter. The vent area of the IndoorVent is greater than the vent areas of existing quench pipes. After an explosion the IndoorVent can be re-used. The result is a cost effective solution for plant designers and end users for all industries.

Existing quench pipes are uneconomical, not re-usable or have lower venting efficiencies requiring high vessel strength. The BRILEX IndoorVent offers unlimited use with the highest known efficiency.

BRILEX delivers complete units consisting of the IndoorVent and a pre-installed BRILEX explosion vent including integrated flange gaskets and monitoring sensor. A spare parts kit for immediate use after an explosion consisting of explosion vent and filter cartridges.

The BRILEX IndoorVent can be used for reduced explosion pressures (P red) between 0.2 to 1.5 bar g and K st values up to 250 bar m/sec.

BRILEX-IndoorVentEXL for venting of dust explosion in production buildings.

– Cost reduction due to optimised manufacturing
– Higher Certified Effective vent areas due to extendable modules
– Extendable from 1900 cm²; to 3100 cm²;
– Integrated explosion vent and sensor
– Tested up to P red max 0,9 bar
– Certified For dusts up to KST 200 bar.m/sec
– Guaranteed re-usability after an explosion

Brilex Integrated Explosion Vent Gaskets

All explosion vents are supplied with “factory-installed” integrated flange gaskets. The standard material is EPDM and can be used from -40 °C to +120 °C.

As an alternative the following standard materials are available:
White FDA Silicone: – 50 °C to +200 °C
Klinger: – 100 °C to +400 °C
Ceramic: -100°C to +900 °C
Other materials can be supplied on request

Brilex Insulation for Explosion Vents

Insulation consists of a fire-proof mineral wool according to DIN 1259. The insulation is directly mounted to the “vent- side” of the explosion vent and is protected by a light-weight aluminium cover with a water-tight seal. It is secured to the explosion vent to prevent it from flying away during venting. Brilex insulation does not have any affect on the venting relief capability or efficiency. This has been proved by notified bodies in many dynamic explosion tests. Optional insulation thickness can be supplied to meet the customer’s specifications.

Brilex Mounting Frames

The necessary outlet flange for types GE / KE can also be supplied. The following material is available: Zinc plated carbon steel or stainless steel.

Brilex Burst Sensor – SE – For ATEX Zone 22

To monitor an installation a burst sensor type SE can be installed. The sensor signals the opening of the bursting disc so that equipment such as fans or rotary valves can be switched off. SE sensors are installed separately also just above the explosion vent. This enables SE sensors to be easily adapted to existing installations.They are also suitable for the food industry.

Brilex SE Sensor (169.8 KiB)

Brilex Burst Sensor – SE-HT (High Temperature Sensor) – for ATEX Zone 22

The SE sensor is complemented by the HT sensor, which is also suitable for use at high temperatures.

Brilex – Approvals and Documentation

Each batch of explosion vents is tested in the factory according to EN 14797. Burst tests are witnessed by BRILEX Quality Control (QC) personnel or on request by independently accredited third parties such as TÜV or others. The discs are then tagged by BRILEX QC personnel. Works test certificates (burst test certificates) will generally be provided for all products according to EN 10204 3.1 B.

Brilex – Guidelines and Certificates

The basis for our controlled quality is the quality management system according to DIN ISO9001:2008. All products are examined and certificated according to 94/9/EC (ATEX 100). The requirements by VDI 3673, EN 14491, NFPA68 have been met. All products are in agreement with CE and are labeled appropriately.