Page 17 - Aerial Appliance Operator Lesson Plan V2

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Topic 6: Siting theory

Be aware of obstructions above the boom that may hinder or stop the
aerial from reaching its objective. Such obstructions are:

• wires

• poles

• signs

• fire escapes

• verandahs.

Positioning

Cover the following:

Position the appliance to take into account the following:

• Exposure hazard:
Aerials must not be exposed to levels of radiated heat or direct
flame that may cause harm to the operators or damage to the aerial
components.

• Building collapse:
Keep careful watch on walls for signs of collapse. Operating at
a corner offers greater protection from building collapse. (This
position also offers greater area of achievement for an aerial).

• Wind hazard:
Wind velocity may vary greatly at different heights. The greater
the extension, the greater the effects of wind on stability. Do not
exceed the maximum wind speed rating for your appliance.

• Flying debris hazard:
Be aware of the potential for flying glass, dislodged roofing and hot
brands/embers to damage the appliance.

• Persons hazard:
When using the aerial for rescue, approach the head from above or
from the side to eliminate the chance of anyone jumping or falling
onto the aerial.

TOPIC CONCLUSION

Help students recap main points.
Give students an opportunity to ask questions.

September 2018 | Version 2