For blast resistant products, there are various design philosophies available as options to manufacturers. Some are easy and some are very tough. It is difficult to
tell which one is good and which one is not because the applications could vary significantly. However it is necessary for designers and users to seriously consider
all design facts related to blast resistant products in order to assure the right products are placed at right positions regarding both safety and cost. Here are some
examples of design philosophies of blast dampers for reference.
Design philosophy Options How it works? Finish fast! In this case the blast dampers are expected to stand
the blast waves with duration of only a few milliseconds. The blast load will
mostly attenuate to zero before the dampers’ closing. Hence the damper
structure won’t take pressure load. To provide the blast protection, the blast
attenuators are necessary to work with blast dampers. Let it go! In this case the blast dampers are expected to stand
the blast waves which could be high level overpressure and long duration. The
working position of blades of these blast dampers could be placed at
approximate horizontal, so the blast dampers could let the blast waves go
through without taking blast load. To provide the blast protection, the blast
attenuators are necessary to work with blast dampers. Provide heavy shield! In this case the blast dampers shall be able to take
the blast loads even after its closing so they have to be very strong. In
some practices the blades could be very thick in order to take long lasting
blast waves but its closing speed is also low due to high mass, so passing
through blast waves could be a big issue if it is a concern. To provide the blast protection, the blast
attenuators are necessary to work with blast dampers. Care protection! Strong + Light + Response fast In this case blast dampers shall not only be able to
stand high pressure blast waves with long duration, but also close very fast
to block the blast waves penetrating inside. The impulse block rate of
FUCARE rapid blast dampers is more than 98% in actual tests. By
achieving all these, FUCARE blast dampers can offer the best protection for
applications. No blast attenuators are required.
FUCARE positions its products as high performance protection solutions for those customers who not only require the blast resistance but also
require
the blast dampers to provide protection against blast waves, so it constantly
takes the tough challenges in developing the product solutions.
