Positive Pressure Attack

Kriska Fire Training

John Kriska

Fire Chief, Retired

Class Objectives

Positive Pressure:

Wind Positive Pressure

Wind driven fires

Fire Positive Pressure

Understanding fire positive pressure

Ideal Gas Law

Natural ventilation is not enough

Mechanical Positive Pressure

Positive Pressure Ventilation (PPV)

Pressurization Opening

Blower set-up methods, Blower sizes,

Blower carbon monoxide

Exhaust opening

Location, Size

Path of Least Resistance

Room with no openings

Systematically ventilating

Positive Pressure Attack

Basic fire attack concept

Pressurization opening

GoNoGo Check

Exhaust Opening

How are exhaust openings made for PPA?

What is really going on inside a fire building when using PPA?

Critics of PPA

When not to use PPA

Standard Operating Guideline and Size-Up for using PPA

Contradiction and explanation

NIST

PPA Controversy: Flashover, Firefighter injuries while using PPA Resolving these issues

Fire Building Risk areas

Fire Approach Path

Using your imagination, a practical exercise

Putting it all together

Doing it Right

Incident discussion

SOG for PPA suggestion