Frangible Blow Out / Rupture Panels And Safety Cages
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These panels are fabricated from Super Lightweight GRP faced insulated materials. They are composite panels weighing approximately 11kgs per m² and are available in both standard and also Fire Rated constructions.
The Frangible Explosion Panels are available in a range of RAL colours and their GRP outer surfaces provide a convenient wipe clean finish for ease of maintenance.
They are installed as a system within a frame that is bolted to the fabric of the building.
The panel is retained by FM Approved Blast Release Bolts which are manufactured to provide a wide range of release values to accomodate all sizes of frangible panels and specified release pressures. They are normally discharged into a safe area in response to an internal blast or explosion.
The Frangible Blow Out / Rupture panels provide the most efficient method of releasing overpressure after an explosion or blast event.
Product Description
The centre panel is manufactured from Super Lightweight GRP material which in the event of a blast, will release at the customer’s chosen blast pressure, in order to release overpressure from the building. We use an FM Approved Blast Release Mechanism which is made to ensure an accurate and consistent release. Read more here: https://www.fm.com/uk/about-us/our-organization/approvals
Advantages
The unit provides instant pressure relief over larger areas than what can be achieved with other vent products. This is suitable for both small and large threats that may arise in factories and processing plants.
Features
- All units are made to customer’s required dimensions and various wall constructions
- The product uses FM Approved Blast Release Bolts to provide accurate release values and reduce the likelihood of an incorrect release.
- Blast cages are available to contain the frangible panel after an event and allows blast pressure to be released sidewards and upwards.
Areas of Application
- Chemical Production
- Petroleum Industry
- Paint, Varnish Manufacturers
- Energy/ Mining Industry
- Co-Generation Plants
- Recycling Centres
- Sewage Treatment (by-product recycling)
- Automotive (air bag, mfg. Plant lines)
- Grinding/Pulverizing processes
- Airborne dustsInk Manufacturers
- Printing Companies (solvent use/storage)
- Paper Process (solvent use/storage)
- Laboratory Test Facilities
- Hospitals (gas and/or flammable storage areas)
- Brewery Facilities (grain storage/processing)
- Fossil Fuel Plants (coal dusts)
- Food Processing (airborne dust)
- University Labs (chemical lab store rooms)
- Grain Milling Facilities (airborne dusts)
- Nuclear Power Stations
Specification
| PROFILE |
|---|
| Available in Aluminium and Stainless Steel |
| Minimum frame depth/wall thickness 80mm |
| FINISHES |
|---|
| Factory applied Polyester Powder Coat in standard RAL colours |
| Special finishes available on request |
| AVAILABLE SIZES |
|---|
| Minimum 500mm x 500mm |
| Maximum up to 1250mm x 2400mm |
| CENTRE PANEL |
|---|
| 28mm overall centre panel thickness |
| Weighs less than 11kg/m2 |
| Insulation greater than U=1.4 |
| RELEASE VALUES |
|---|
| To suit customer specification |
| OPTIONS |
|---|
| Thermally broken Fire Rated panel |
| Extended fixing lugs if required |
| Can be installed into steel or masonry apertures |
| SHIPPING |
|---|
| Supplied in International Shipping Crates for dispatch |
Sample Drawings
Additional Information
FM Global Property Loss Prevention Data Sheets 1-44, Extract with reference to FM Approved Release Fasteners
2.1.3 Location
2.1.3.1 Locate rooms or buildings requiring damage-limiting construction in accordance with Section 3.1.1.
2.1.3.2 Avoid venting a single end of an elongated enclosure. Where this situation is unavoidable, follow the guidelines in Section 3.1.7.
2.1.4 Pressure Relieving Vent Panels
Install at least a total area of pressure relieving vent panels that equals the minimum recommended vent area.
Do not credit roof vent panel areas subject to accumulation of snow, ponded water, dust, or debris.
Where this situation is unavoidable, refer to Section 3.1.2. A maximum weight of 3lb/ft2 (14.6kg/m2) is generally recommended for venting roof panels.
2.1.4.1 FM Approved Products
Follow the manufacturer’s instructions for the installation of FM Approved (see Appendix A for definition) explosion venting systems, including fasteners and washers.
The following recommendations apply to the installation of FM Approved explosion venting systems including fasteners and washers:
1.When FM Approved, collapsing washers are used, a1⁄2in. (13mm) diameter oversized hole should be drilled in the wall panel and a slightly smaller diameter centering washer or sleeve should be installed. It is imperative that the pilot hole for the screw/bolt be centred with respect to the centering washer. Only a specifically FM Approved No.14 (1⁄4in., 6mm in diameter) screw/bolt should be used with this washer (seeFigure2.1.4.1-1).
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Notes:
Vent-All FM Certified Approved Release Washers identification colours –
EXA-74 Colour Code GREEN Release Value Per Fastener 70# / 0.31 kN
EXA-76 Colour Code BLUE Release Value Per Fastener 110# / 0.49 kN
EXA-79 Colour Code TAN Release Value Per Fastener 175# / 0.78 kN
EXA-84 Colour Code LIGHT GREEN Release Value Per Fastener 435# / 1.93 kN
Release calculations of venting panel in this product include the weight of the roof panel e.g. –
Weight of roof panel in kN + 2 x Vent Washer in kN /vent area
The illustrated Release Washer in this Data Sheet is GREEN, release value 70lbs/0.31kN
The Release Assemblies are fitted centrally and opposing to balance the resistance of the Roof Panel
Applications that require 4 No. Release Assemblies are also paired about centre
Imbalanced blast waves can cause distortion and compromise operation. Keep Roof Panels clear of debris and snow accumulation at all times. An excessive internal explosion could compromise the restraint cables and also distort the roof panel requiring replacement before future use.
See Terms and Conditions, available upon request.
Frequently Asked Questions
Do you offer installation?
Yes, we offer a full installation service.
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