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National Fire Protection Association (NFPA) Hazard Rating Diamond - PowerPoint PPT Presentation


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National Fire Protection Association (NFPA) Hazard Rating Diamond. Special Hazard. Hazard Rating Severe Serious Dangerous Minor 0 Slight. Flammability Hazard. Health Hazard. 3. 1. 0. Reactivity Hazard. NFPA Diamond. OX. Serious Flammability Hazard Rating. 3. 1. 0. 3. OX.

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Presentation Transcript
special hazard
Special Hazard

Hazard Rating

Severe

Serious

Dangerous

Minor

0 Slight

Flammability Hazard

Health Hazard

3

1

0

Reactivity

Hazard

NFPA Diamond

OX

slide3

Serious Flammability Hazard Rating

3

1

0

3

OX

Flammability Rating “3”

• rapidly vaporizes at normal temperature and pressure

• rapidly disperses into air

• burns readily

NFPA

Flammability Rating

Includes:

• very flammable gases

• extremely volatile liquids

• dust that readily burns

• dust that explodes in air

slide5

3

1

0

1

OX

Minor Reactivity Hazard Rating

NFPA Reactivity Rating

Reactivity Rating “1”• materials must be preheated before ignition can occur• includes most ordinary combustible materials

slide6

3

1

0

OX

OX

Special Hazard Rating

NFPA Special Rating

Special Hazard Rating “OX”

• materials, on exposure under fire conditions, would offer no hazard beyond that of combustible material