Transcript SURVIVAL SKILLS AWARENESS, PART III

Application of
Portable Fire Extinguishers
Maryland Fire and Rescue
Institute
Application of
Portable Fire Extinguishers
OBJECTIVE (SPO):
Given a selection of portable extinguishers, full personal
protective equipment, and a controlled instructional
environment, the student will be able to demonstrate the
proper techniques of inspecting, selecting, and using
portable extinguishers on Class A, B, and C fires, so that
the correct extinguisher is used for the class of fire, the
fire is extinguished completely, and safe operations are
practiced.
1.1
Application of
Portable Fire Extinguishers
Overview:
• Purpose of Portable Fire
Extinguishers
• Limitations of
Extinguishers
• NFPA Classification and
Characteristics of Fuels
• Care and Maintenance
• Types of Agents
• Practical Use of Fire
Extinguishers
• General Rules
• Ratings of Extinguishers
• Types of Extinguishers
1.2
Why Are Portable Fire
Extinguishers Used?
A
P
W
C
O2
D
R
Y
C
H
E
M
I
C
A
L
F
O
A
M
Quick blitz or knockdown under certain conditions
or circumstances (initial attack).
• Mobile conveyances fires
• Small flammable liquid fires
• Trash can fires
• Industrial shop fires
• Electrical fires
1.3
A Word of Caution and Prudence
In Lesson 4-1 you learned about PPE requirements
appropriate for a specific incident.
In this Lesson NOTHING HAS CHANGED!!
Wear your
Oxygen
Fuel Source
Heat
Chemical Reaction
Danger
Hazards
Risks
PPE
and
SCBA
when warranted.
DON’T FOLLOW THE PACK FOLLOW YOUR TRAINING!
1.4
1.1
1.1
1.1
1.1
1.1
1.1
Monammonium Phosphate
Multipurpose Dry Chemical Fire Extinguisher
Forms a
Crust on
Class A
Fuels
A:B:C
Rated
Is
Not Compatible
with B:C
Dry Chemical
Forms
Emulsion
in Class B
Fuels
Is
Corrosive to
Aircraft
Parts
Corrodes
Electrical
Equipment
1.5
1.1
Halogenated Hydrocarbons
HALON
Chemically reacts with flame to interrupt the chain
reaction. It is a chemical compound that contains
carbon + one or more elements from the
HALOGEN series: Fluorine, Chlorine, Bromine,
Iodine, and Astatine.
HALON 1211 BROMOCHLORODIFLUROMETHANE
HALON 1301 BROMOTRIFLUOROMETHANE
1.6
1.1
1.1
1.1
1.1
Number(s) Rating Indicates Relative
Effectiveness of the Extinguisher and
Performance Capability
Based on 1¼ gallons of water
CLASS
A
CLASS B
1A - 40A (range)
2A = 2½ gallons of water
Based on square foot area of flammable
liquid surface
1B - 640B (range)
20B = 20 square feet of surface area
CLASS C
No numerical rating - only letter rated
CLASS D
No numerical rating - cannot be given a
multipurpose rating for use on other
classes of fire
1.7
Limitations of Extinguishers
• Have limited discharge distances
• Carry limited amount of agent
• May be only partially effective
• Limited discharge time
• Must be maintained
• Expensive to use
1.8
Care and Maintenance
Mandated by Fire Prevention Code
and Standard
Article 38A
MD Fire
Prevention Code
NFPA 10, Standard for
Portable Fire Extinguishers
Conduct Maintenance
• Check annually
• Take it out of service if damaged
• Follow manufacturer’s
recommendations
• Note any evidence of impairment
• Perform a hydrostatic test
• Record date of inspection or testing
1.9
PRACTICE - PRACTICE - PRACTICE
Back away
after
extinguishment
G
E
N
E
R
A
L
Apply from
upwind
position
Work
systematically
Wear
PPE/SCBA
when
necessary
Apply
at proper
range
R
U
L
E
S
1.10
Select
proper
extinguisher
Use compatible
agents
Know
application
techniques
Work in
pairs
Practical Use of Fire Extinguishers
Spend the final hour
practicing during
structured evolutions.
Follow steps and
procedures outlined in
IFSTA Essentials of
Fire Fighting on pages
140-144.
1.11
Application of
Portable Fire Extinguishers
OBJECTIVE (SPO):
Given a selection of portable extinguishment, full
personal protective equipment, and a controlled
instructional environment, the student will be able to
demonstrate the proper techniques of inspecting,
selecting, and using portable extinguishers on Class A, B,
and C fires, so that the correct extinguisher is used for the
class of fire, the fire is extinguished completely, and safe
operations are practiced.
1.12
Application of
Portable Fire Extinguishers
Review:
• Purpose of Portable Fire
Extinguishers
• Limitations of
Extinguishers
• NFPA Classification and
Characteristics of Fuels
• Care and Maintenance
• Types of Agents
• Practical Use of Fire
Extinguishers
• General Rules
• Ratings of Extinguishers
• Types of Extinguishers
1.13