FIRE CHEMISTRY, SPECIAL HAZARD FIRES, EXTINGUISHING AGENTS AND METHODS - PowerPoint PPT Presentation

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FIRE CHEMISTRY, SPECIAL HAZARD FIRES, EXTINGUISHING AGENTS AND METHODS

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Class Bravo (1) Characteristics (2) Examples (3) Extinguishing agents. 1-1-3. Class Charlie ... Maintain a minimum standoff distance of four feet when applying ... – PowerPoint PPT presentation

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Title: FIRE CHEMISTRY, SPECIAL HAZARD FIRES, EXTINGUISHING AGENTS AND METHODS


1
FIRE CHEMISTRY, SPECIAL HAZARD FIRES,
EXTINGUISHING AGENTS AND METHODS
  • J495-0419 REV A

1-1-1
2
Identify classes of fires
  • Class Alpha
  • (1) Characteristics
  • (2) Examples
  • (3) Extinguishing agents

1-1-2
3
  • Class Bravo
  • (1) Characteristics
  • (2) Examples
  • (3) Extinguishing agents

1-1-3
4
  • Class Charlie
  • (1) Characteristics
  • (2) Examples
  • (3) Extinguishing agents

1-1-4
5
  • Class Delta
  • (1) Characteristics
  • (2) Examples
  • (3) Extinguishing agents

1-1-5
6
Theory of Extinguishment
  • Methods
  • (1) Removing the Fuel
  • (2) Removing the Oxygen
  • (3) Removing the Heat
  • (4) Breaking the Combustion Chain
    Reaction

1-1-6
7
Primary Agents of Extinguishment
  • (a)Water
  • (1) Characteristics
  • (2) Applications
  • (3) Safety Requirements

1-1-7
8
  • Warning DO NOT use the Navy All-purpose nozzle
    fog applicator or straight stream water pattern
    on an energized electric source to avoid shock
    hazards. Maintain a minimum standoff distance of
    four feet when applying water fog to an energized
    electric source.

1-1-8
9
  • (b) Aqueous Film Forming Foam
  • (1) Characteristics
  • (2) Applications
  • (3) Safety requirements

1-1-9
10
  • (c) Carbon Dioxide
  • (1) Characteristics
  • (2) Applications
  • (3)Safety requirements
  • WARNING The primary hazard to personnel is death
    by asphyxiation.

1-1-10
11
  • (d) Halon 1301
  • (1) Characteristics
  • (2) Applications
  • (3) Safety requirements
  • a. Less than 7 by volume
  • b. 7-10 by volume
  • c. Greater than 10 by volume

1-1-11
12
  • (e) Steam
  • (1) Characteristics
  • (2) Applications
  • (3) Safety Requirements

1-1-12
13
  • (f) Potassium Bicarbonate
  • (1) Characteristics
  • (2) Applications
  • (3) Safety requirements
  • WARNING Personnel hazards- Discharge of large
    quantities may cause temporary breathing
    difficulty during and immediately after discharge
    and may seriously interfere with visibility.

1-1-13
14
  • (g) Aqueous Potassium Carbonate(APC)
  • (1) Characteristics
  • (2) Applications

1-1-14
15
Fire Dynamics
  • (A) Compartment Fire Dynamics
  • 1. Growth stage and rollover
  • 2. Flashover stage
  • 3. Fully developed fire stage
  • 4. Decay stage

1-1-15
16
  • (B) Fire spread control procedures
  • 1. Response
  • 2. Adjacent compartments
  • 3. Fire zone bulkheads

1-1-16
17
Special Hazard Fires
  • (A) Deep fat fryer fire
  • 1. Located in galley areas
  • 2. Recommended extinguishing methods and safeties
  • (a) Unprotected personnel should stay at least 4
    feet from the deep fat fryer when discharging
    agent to avoid personnel burns from the splatter
    of hot cooking oil.

1-1-17
18
  • (B) Method 1
  • 1. Do not direct AFFF stream directly into the
    cooking oil. Plunging AFFF into cooking oil can
    result in immediate boiling of the AFFF. Violent
    boiling may result in hot cooking oil being
    thrown out of the fryer.

1-1-18
19
  • (C) Method 2
  • 1. DO NOT apply a straight stream of water into
    cooking oil. This may violently throw hot cooking
    oil out of the fryer creating a personnel hazard.

1-1-19
20
  • (D) Method 3
  • 1. The cooking oil fire may have a large flare-up
    on the initial application of water fog without
    PKP. This flare-up lasts approximately three
    seconds followed by fire extinguishments.

1-1-20
21
  • Otto Fuel Fire
  • a. Locations
  • b. Physical Characteristics
  • c. Recommended Extinguishing Agents

1-1-21
22
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