Blast Resistant

BLAST RESISTANT DOORS

• Available in low-, mid-, and high-range units to accomodate blasts from 15 PSF (pound-force per square foot) to 50 PSI (pound-force per square inch).
• Testing of units by independent laboratories complies with the most up to date test standards on the continent.
• Fire labelled products have been tested in accordance with NFPA-80 and are certified by Underwriters Laboratories and Warnock Hersey International
• Blast resistant doors are available with glazing that is factory pre-installed.
• Industrial applications:
  - chemical laboratories
  - petrochemical facilities
  - paint storage facilities
  - jet propulsion test facilities
  - nuclear facilities
  - fireworks manufacturers
  - space travel test facilities
  - cargo areas
  - rubber manufacturing facilities
  - sewage treatment facilities
  - storage of other dangerous materials

Warranty: Manufacturer's limited warranty – five (5) years from date of supply, covering material and workmanship.

Frequently Asked Questions

What is a blast resistant door and frame assembly? This is a door, frame and hardware system able to withstand explosive pressures ranging from ten pounds per square foot (psf) to ninety pounds per square inch (psi). The door must be tested in the in-swinging position as well as in the out-swinging position. Naturally the test criteria in the out-swinging position are more severe.

AMBICO blast resistant steel doors have been laboratory tested for fire resistance by Warnock Hersey International and are independently certified by professional engineers. The door/frame unit must be supplied and tested with factory supplied door hardware able to withstand the specified explosive pressure anticipated.

Why must the factory supply the door hardware complete with blast resistant doors? Door hardware has been specifically designed and tested to form an integral part of AMBICO blast resistant units. When the door is under pressure in the out-swinging position the latch mechanism and hinges are subject to severe structural loads.

What is a blast vent panel? These items are designed to release or vent at specified explosive pressures usually in the range of ten to fifty pounds per square foot. Panels are fixed in place and are supplied with release latches and crash chains.

What is meant by the term "rebound pressure" and how does it affect the blast resistant product that is specified? Blast events are defined by two distinct phases-an initial phase where the full amount of the explosive pressure specified is loaded onto the assembly and a second phase which is also known as the “rebound” pressure where the initial blast pressure dissipates to the ambient pressure immediately prior to the blast event. The extent of the blast pressure during the rebound phase is expressed as percentage of the initial blast pressure. This figure ranges from zero percent to one hundred percent. When a 100% rebound load is specified the door assembly must withstand the full load of the blast in both directions. When the rebound load is 0% the door assembly must withstand the blast load in the initial phase only.