Protection Against Multiple Blast Loads

MAT model BL-201 blast damper provides protection against multiple blast loads that can occur during vapor cloud explosions. Testing performed by Baker Risk demonstrates the damper’s ability to absorb successive blast loads from 3 psi to 16 psi and remain operational (see summary of test results below for specimen #2, a 32” x 32” ID damper).

The damper is designed to be surface mounted to walls and ceilings, or can be duct mounted using
a flange connection.

When combined with the MAT model BD-200-HD fire resistant  pressure relief damper, the
package offers blast protection and pressure relief for buildings or spaces designed with fire
suppression systems.

Model BL-201 has been AMCA tested for pressure drop performance and is ATEX certified for use in explosive atmospheres.

For product details, click here.

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Table ES-1. Summary of Test Results

TestTest SpecimenApplied Peak Pressure (psi) Applied Impulse (psi-ms) Damper Closing Time (ms) Response Description
1116.3147711Damper remained operable
Damper blade had 1/8” permanent deflection
223.212830Damper remained operable
No damage caused in test
325.822920Damper remained operable
No damage caused in test
428.737017Damper remained operable
No damage caused in test
5211.175316Damper remained operable
No damage caused in test
6216.2143912Damper remained operable
No damage caused in test