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Blast resistance doors
Doors Specisications
1 -Blast Resistant Product: Assembly comprised of a door (or pair of doors) and a frame with hardware, or a glazing system that is rated to resist a
specified blast peak pressure and impulse to a required performance level. Higher level doors and frames are typically sold and shipped as one unit in
order to be certified by the manufacturer that it will meet the projected blast and performance requirements.
2 -Blast Pressure: The maximum pressure to be exerted on the assembly by the blast event.
3 -Positive Phase Impulse: The area under the curve formed by the integral of blast pressure (Pmax) vs. time (Td).
Blast Ideal
4 -Charge Weight: The equivalent explosive weight (lbs. or kg) of TNT in the blast event. Different agencies have specific requirements for charge
weight to be used. See agency specific criteria for DoD, VA, GSA, and DOS to determine required charge weight and in some cases, the required standoff
distance.
5 -Duration: The amount of time it takes the peak pressure to decay to ambient conditions (or zero).
6 -Rebound: Load acting in the opposite direction of the initial blast load that may be a result of negative phase pressure loading and system response,
and is typically expressed as a percentage of the initial peak blast pressure.
7 -Stand-off Distance: The distance from the centroid of the explosive device to the specified opening or structure.
8 -Seated/Unseated: The orientation of the door in the frame, in relation to the blast origin.
Blast
9 -Blast Product Response & Damage Category (Also referred to as Level of Protection in the UFC): The amount of structural damage (permanent deformation)
present after the blast event. With respect to a door and frame unit, the operability of the door, and whether or not the door and/or frame become
detached and present a debris hazard. With respect to a glazing system, whether or not the glazing fractures, and if it presents a flying debris hazard.
There are multiple standard test methods written that outline test procedures to follow to show how a blast-resistant unit will react in a blast event.
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specified blast peak pressure and impulse to a required performance level. Higher level doors and frames are typically sold and shipped as one unit in
order to be certified by the manufacturer that it will meet the projected blast and performance requirements.
2 -Blast Pressure: The maximum pressure to be exerted on the assembly by the blast event.
3 -Positive Phase Impulse: The area under the curve formed by the integral of blast pressure (Pmax) vs. time (Td).
Blast Ideal
4 -Charge Weight: The equivalent explosive weight (lbs. or kg) of TNT in the blast event. Different agencies have specific requirements for charge
weight to be used. See agency specific criteria for DoD, VA, GSA, and DOS to determine required charge weight and in some cases, the required standoff
distance.
5 -Duration: The amount of time it takes the peak pressure to decay to ambient conditions (or zero).
6 -Rebound: Load acting in the opposite direction of the initial blast load that may be a result of negative phase pressure loading and system response,
and is typically expressed as a percentage of the initial peak blast pressure.
7 -Stand-off Distance: The distance from the centroid of the explosive device to the specified opening or structure.
8 -Seated/Unseated: The orientation of the door in the frame, in relation to the blast origin.
Blast
9 -Blast Product Response & Damage Category (Also referred to as Level of Protection in the UFC): The amount of structural damage (permanent deformation)
present after the blast event. With respect to a door and frame unit, the operability of the door, and whether or not the door and/or frame become
detached and present a debris hazard. With respect to a glazing system, whether or not the glazing fractures, and if it presents a flying debris hazard.
There are multiple standard test methods written that outline test procedures to follow to show how a blast-resistant unit will react in a blast event.
