Automatic fire extinguishing
using installations ICFF "Blizzard"
recent years, especially in connection with the activation of the
construction of tall buildings, very relevant was the issue of fire
In this design organizations in shaping the
automatic fire extinguishing system helipads use different regulatory
framework in which, unfortunately, is not considered the main
parameter, namely, the dynamics of the fire disaster of the helicopter
on the helipad and the rate of fire extinguishing spilled fuel combined
simultaneous cooling of hot metal structures helicopter as well as the
intensity of the wind loads (of the wind) near the helipad high
building. Disregard of these data leads to a dramatic reduction in fire
For example, if we take
the "Temporary regulations multifunctional design of high-rise
buildings and complexes of buildings in Moscow" (MGSN 4.19-2005), in
accordance with them, a platform to save lives of at least 20x20 m with
metal tray with deaf parapet height not less than 0.1 meters shall be
equipped Stationary automatic installation foam fire on the area, with
an estimated running time of at least 10 minutes. and filling volume
20h20h0, 1 m for 1.5 min.
Calculations show that the cost of foam solution to
fill this volume should be approximately 6.3 l/s.
practice of extinguishing fires in aircraft, including helicopters,
shows that this amount is not enough.
Really to extinguish a fire at the site 20x20 m in the normative flow
rate 0.14 l/s m2 need about 56 l/s penoobrazovtelya solution, that is
almost 10 times more than the stipulated norms.
Given the dynamics of the fire and the
destruction of existing factors in the design of the helicopter fire,
he should be put out for no more than 30 seconds after the start of
flame impingement on helicopter design. Thus, the rate of elimination
of combustion should be at least 13 m2 /s.
It is these initial data, that is, the time
required extinguishing 0.5-1 min. on an area of 400m2 inspired the
creation of an automated system Stationary helipads with ICFF
The system includes: a pumping station with a
capacity of up to 50 l/s, with the supply of water and foam solution
sufficient to provide 100% fire on the said area, piping systems, fire
detection and alarm to activate the pumping station and the foam on the
The response time of the signal of the fire is
not more than 20-30 seconds.
Stationary mounted units provide supply of foam on the surface of the
jets simultaneously plschadki in the design of a burning helicopter.
This creates the required rate of between 13 m2/s fire and cooling the
Protection is provided by the site Stationary mounted on a ring around
the helipad facilities ICFF "Blizzard." Number and type of units
determined by the project in each case.
Example of plants shown in Fig. 1 and Fig. 2.
Production technology and transportation pen
different dispersion and multiplicity implemented in ICFF "Blizzard"
means faster fire more than 5-10 times compared to traditional means.
Field tests of the automatic fire
extinguishing system helipad shown high efficiency. For the first time
possible to create the required thickness of the foam for 10 seconds.
while protecting the entire surface of a helicopter with water and / or