Tactical Ventilation

Question 1

Describe inlets and outlets for tactical ventilation

Answer 1

• Inlets should be upwind
• Outlet should be down wind
• Inlet should be twice the diameter of outlet to assist create positive pressure
• Outlet MUST be made first.

Question 2

Where should covering jets be placed

Answer 2

At both the inlet and outlet

In case of sudden change in wind direction

Question 3

What is the minimum weight of attack for ffing when considering tactical ventilation

Answer 3

45mm

Branch at 230l per minute

Question 4

When can ffing and rescue teams be committed to the ventilation pathway

Answer 4

Should only be committed to the ventilation pathway once it is secured, stable and working effectively

Question 5

What are the 3 stages of Positive Pressure Ventilation

Answer 5

• Stage 1. Defensive= after fire is out. Improves conditions for damping down & FIU
• Stage 2 Offensive= fire under control.Outlet, covering jets, leads to better conditions for S&R
• Stage3 Offensive= before BA committed. Improve conditions for ffing S&R. Less water as less gasses to cool.