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Application of Portable Fire Extinguishers . Maryland Fire and Rescue Institute. Application of Portable Fire Extinguishers. OBJECTIVE (SPO):

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Application of Portable Fire Extinguishers

Maryland Fire and Rescue Institute


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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


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Application of Portable Fire Extinguishers

  • Overview:

  • Purpose of Portable Fire Extinguishers

  • NFPA Classification and Characteristics of Fuels

  • Types of Agents

  • Ratings of Extinguishers

  • Types of Extinguishers

  • Limitations of Extinguishers

  • Care and Maintenance

  • General Rules

  • Practical Use of Fire Extinguishers

1.2


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Why Are Portable Fire Extinguishers Used? Extinguishers

CHEMICAL

FOAM

CO

APW

DRY

2

  • Quick blitz or knockdown under certain conditions or circumstances (initial attack).

  • Mobile conveyances fires

  • Trash can fires

  • Electrical fires

  • Small flammable liquid fires

  • Industrial shop fires

1.3


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A Word of Caution and Prudence Extinguishers

In Lesson 4-1 you learned about PPE requirements appropriate for a specific incident.

In this Lesson NOTHING HAS CHANGED!!

Wear your

and

when warranted.

PPE

Oxygen

Fuel Source

Heat

Chemical Reaction

Danger

Hazards

Risks

SCBA

DON’T FOLLOW THE PACK -

FOLLOW YOUR TRAINING!

1.4


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1.1 Extinguishers


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1.1 Extinguishers


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1.1 Extinguishers


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1.1 Extinguishers


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1.1 Extinguishers


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1.1 Extinguishers


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Monammonium Phosphate Extinguishers

Multipurpose Dry Chemical Fire Extinguisher

Forms a

Crust on

Class A

Fuels

Is

Not Compatible

with B:C

Dry Chemical

EXTINGUISHER

A:B:C

Rated

Forms

Emulsion

in Class B

Fuels

SUPER

Is

Corrosive to

Aircraft

Parts

Corrodes

Electrical

Equipment

1.5


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1.1 Extinguishers


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Halogenated Hydrocarbons Extinguishers

HALON

Chemically reacts with flame to interrupt the chain reaction. It is a chemical compound that contains carbon + one or more elements from the

series: Fluorine, Chlorine, Bromine, Iodine, and Astatine.

HALON 1211 BROMOCHLORODIFLUROMETHANE

HALON 1301 BROMOTRIFLUOROMETHANE

HALOGEN

1.6


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1.1 Extinguishers


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1.1 Extinguishers


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1.1 Extinguishers


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1.1 Extinguishers


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CLASS Extinguishers

A

CLASS

B

CLASS

C

CLASS

D

Number(s) Rating Indicates Relative Effectiveness of the Extinguisher and Performance Capability

Based on 1¼ gallons of water

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

No numerical rating - only letter rated

No numerical rating - cannot be given a multipurpose rating for use on other classes of fire

1.7


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Limitations of Extinguishers 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


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Care and Maintenance Extinguishers

Mandated by Fire Prevention Code

and Standard

Article 38A MD Fire Prevention Code

NFPA 10, Standard for Portable Fire Extinguishers

Conduct Maintenance

  • Check annually

  • Follow manufacturer’s recommendations

  • Perform a hydrostatic test

  • Take it out of service if damaged

  • Note any evidence of impairment

  • Record date of inspection or testing

1.9


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GENERAL Extinguishers

RULES

PRACTICE - PRACTICE - PRACTICE

Select

proper

extinguisher

Back away

after

extinguishment

Apply from

upwind

position

Use compatible

agents

Work

systematically

Work in

pairs

Know

application

techniques

Apply

at proper

range

Wear PPE/SCBA when necessary

1.10


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Practical Use of Fire Extinguishers 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


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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


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Application of Portable Fire Extinguishers

  • Review:

  • Purpose of Portable Fire Extinguishers

  • NFPA Classification and Characteristics of Fuels

  • Types of Agents

  • Ratings of Extinguishers

  • Types of Extinguishers

  • Limitations of Extinguishers

  • Care and Maintenance

  • General Rules

  • Practical Use of Fire Extinguishers

1.13


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