Power Blower Information
Page 8
Figure 1.3
The TEMPEST POWER BLOWER® is
a high powered, portable fan used for
Positive Pressure Ventilation and Attack
(PPV/PPA), ventilation techniques that
quickly and efficiently replaces hazardous
interior environments.
PPV and PPA were pioneered in the fire fighting industry where fire fighters use the
TEMPEST POWER BLOWER® to ventilate smoke, heat, and harmful gases from
buildings. This creates a safer environment for them to work in and makes it easier for
them to find victims and extinguish the fire.
PPV and PPA rely on two principles, (1) an air pattern capable of creating an effective
door seal, and (2) pressure. To accomplish Positive Pressure Ventilation or Attack, the
blower is placed on the outside of the structure. It is positioned so that the air pattern
created by the blower completely seals the entrance opening, or at least 2/3 of it (Figure
1.2). When this seal is achieved, the air pressure is increased equally at all points inside
the structure. When an exhaust opening is created, all of the interior air moves in one
mass towards it. The result is fast, efficient ventilation of the entire structure.
NOTE:
The TEMPEST POWER BLOWER® is the most efficient tool for PPV and
PPA for two reasons. First, the exclusive Tempest Turbo 2000 tapered
shroud design creates a wide, stable, conical air pattern. Second, the airflex
impeller used on all Tempest blowers is designed to create high pressure.
These two features working together make the TEMPEST POWER
BLOWER® a highly effective and efficient ventilation tool.
As with any new technique, Positive Pressure Ventilation requires training
and education in order to be implemented properly and safely. Tempest
offers access to a complete line of training materials, which cover many
applications for this powerful ventilation technique. For more information
visit www.tempest.us.com, www.positivepressuretraining.com or contact us
at 800.346.2143.
figure 1.2
