Power Blower Information
Page 8
e TEMPEST POWER BLOWER® is a
high powered, portable blower used for
Positive Pressure Ventilation and Attack
(PPV/PPA), ventilation techniques that
quickly and eciently replaces hazardous
interior environments.
PPV and PPA were pioneered in the re ghting industry where re ghters use the
TEMPEST POWER BLOWER® to ventilate smoke, heat, and harmful gases from build-
ings. is creates a safer environment for them to work in and makes it easier for them
to nd victims and extinguish the re.
PPV amd PPA rely on two principles, (1) a cone shaped air pattern, 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 cone shaped air pattern created by the blower
completely seals the entrance opening (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. e result is fast, ecient
ventilation of the entire structure.
NOTE:
e TEMPEST POWER BLOWER® is the most ecient tool for PPV and
PPA for two reasons. First, the exclusive Tempest tapered shroud design
creates a wide, stable, conical air pattern. Second, the seven blade air move-
ment impeller used on all Tempest blowers is designed to create high pres-
sure. ese two features make the TEMPEST POWER BLOWER® such a
powerful ventilation tool.
As with any new technique, Positive Pressure Ventilation requires training
and education in order to be implemented properly and safely. Tempest of-
fers access to a complete line of training materials, which cover many appli-
cations for this powerful ventilation technique. For more information visit
www.tempest-edge.com, www.positivepressuretraining.com or contact us at
1.800.346.2143.
Figure 1.2
