Blast proof doors belong to category of passive protection of people and valuable property from the damaging factors of an explosion. They are often installed in secure storage facilities, concrete bunkers, weapons storage rooms and military depots in order to ensure the safety of the facility. Products of this type can protect against the possible consequences of an explosive shock wave and fragmentation of hand-held ammunition. In addition, they are blast proof doors used to protect strategically important structures and prevent death or injury to personnel from possible bomb attacks.
Features Blast Proof Door
• A blast proof door is an effective means of protection against air shock waves in the event of an explosion.
• The design can withstand excessive frontal impact.
• The product retains its functionality and characteristics after breaking loads.
• These doors are also fire resistant. It is also airtight and pressure resistant.
Classification of Blast Proof Doors
The protection class of blast proof doors is determined based on their condition after testing, while considering the following parameters:
• The likelihood of unauthorized entry, that is, full or partial access to the protected zone.
• Safe operation of locks and other locking devices.
Blast proof doors are classified according to the degree of destruction that they can withstand. According to this criterion, five main classes of explosion-proof structures are distinguished:
• Grade 1 – able to survive in a completely destroyed building.
• Grade 2 – they remain operational during the collapse of pipeline overpasses, brick walls with a thickness of 1.5 bricks and the movement of cylindrical tanks.
• Grade 3 – withstand the destruction of metal supporting structures and floors of industrial structures.
• Grade 4 – resistant to the collapse of partitions, roofs and steel frames.
• Grade 5 – are installed on the border of the zone of damage to buildings.