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Flashcards in Tac Vent Deck (16)
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1
Q

What is the definition of tac vent

A

The planned systematic and coordinated rwmoval of hot smoke and fire gases and their replacement with fresh air

2
Q

Definition of ventilation

A

The removal of products of combustion from a structure and their replacemeng with a supply of fresher air in order to improve conditions

3
Q

Consequential ventilation

A

Ventilation of the fire as a result of firefighting operations

4
Q

Tactical ventilation

A

Systematic and coordinated removal of hot smoke and fire gases and their replacement with hot air as part of the ICs overall incident plan

5
Q

Tactical ventilation can:

A

Limit or reduce fire spread and products of combustion
Improve conditions
Dilute and remove products of combustion
Assist with evacuation
Improve working conditions and survivability elsewhere

6
Q

Defensive ventilation

A

Carried out away from the fire or after extinguished to remove heat and smoke, particularly to improve access and escape routes in areas not affected by fire

7
Q

Offensive ventilation

A

Carried out close to the fire compartment to have a direct effect on the fire itself, to limit fire spread and to make conditions safer for firefighters

8
Q

Natural ventilation. .

A

Describes collectively the techniwues of ventilation not assisted by mechanical means. Includes the use of installed vents windows and doors

9
Q

Sequential ventilation

A

When multiple floors or rooms are reauired to be ventilated. The process of sequentially isolating and opening doors and windows so that the area can be cleared of products of combustion

10
Q

Negative pressure ventilation

A

Describes The process where ventilation of a compartment is achieved by reducing the pressure within it using fans or a branch set to a cone pattern and directed out of an opening

11
Q

Positive pressure ventilation

A

Describes the process whereby fans are used to ventilate a compartment or structure by forcing air into a building. This has the effect of increasing the pressure inside the structure which drives heat and products of combustion through an outlet to open air

12
Q

Ventilation pathways

A

Identification and use of available routes within a building where fresh air can enter a compartment and the products of combustion can travel to a planned outlet to open air

13
Q

HVAC

A

Heating Ventilation and air conditioning

14
Q

When can premises fixed installations be activated

A

Only on instructions from the IC and following advice from a suitably trained site personnel or SFSO

15
Q

Key elements of ventilation pathway

A

The inlet
The outlet
An enclosed route from the inlet to the fire to funnel and use incoming air to its best effect
An enclosed route from the fire to the outlet to avoid uncontrolled spread of products or combustion in to ajoining compartments
Charged covering jets should be sited at both inlet and outlet
Consider all available information for planning
A 360

16
Q

3 levels of ppv

A

Stage 1. Defensive. Post fire. Ppv fans force freah air through building.
Stage 2. Offensive. Fire under control but still burning. Crew approaches fire but makes outlet vent and applies ppv fans.
Stage 3. Offiensive. Implementing ppv before committing crews