Tactical Ventilation

Question 1

What are the hazards associated with intentional and accidental ventilation?

Answer 1

Self or uncontrolled ventilation 
Wind
Products of combustion- fire, heat smoke
Communications need to be maintained 
Concealed voids
Backdraught
Flashover 
Fire gas explosion

Question 2

When should a fixed installation be operated to ventilate?

Answer 2

Only on instructions of the IC after advice from trained site personnel or SFSO, knowing the impact it will have

Question 3

What considerations should be worked through before implementing tactical ventilation?

Answer 3

Prevailing wind conditions 
Suitable ventilation inlets and outlets
Ventilation pathway
Securing the ventilation pathway 
Weight of attack
Covering jets
Firefighting activities 
Activating the pathway - order of implementation 
After the fire is extinguished

Question 4

What are the levels of PPV?

Answer 4

Stage 1 - Defensive
Stage 2 - Offensive. Fire is under control
Stage 3 - Offensive. Before committing BA crews

Question 5

What operational roles exist when performing PPV?

Answer 5

Fan operator
Ventilation officer
Outlet officer

Question 6

Rule of PPV?

Answer 6

If conditions are deteriorating or not improving, comms are compromised, the fans should be turned off.

Question 7

Why should gas supplies be turned off before PPV ?

Answer 7

Prevent gas pilot lights being blown out