National Fire Protection Association (NFPA) Hazard Rating Diamond Flammability Hazard - RED NFPA Diamond Health Hazard - BLUE Hazard Rating 4 Severe 3 Serious 2 Dangerous 1 Minor 0 Slight OX Special Hazard.
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Transcript National Fire Protection Association (NFPA) Hazard Rating Diamond Flammability Hazard - RED NFPA Diamond Health Hazard - BLUE Hazard Rating 4 Severe 3 Serious 2 Dangerous 1 Minor 0 Slight OX Special Hazard.
National Fire Protection
Association (NFPA)
Hazard Rating Diamond
Flammability Hazard - RED
NFPA Diamond
Health Hazard
- BLUE
Hazard Rating
4 Severe
3 Serious
2 Dangerous
1 Minor
0 Slight
3
0
OX
1
Special Hazard WHITE
Reactivity
Hazard YELLOW
Serious Flammability Hazard Rating
Flammability Rating “3”
3
30
1
OX
• rapidly vaporizes at
normal temperature
and pressure
• rapidly disperses into
air
• burns readily
Includes:
• very flammable gases
• extremely volatile
liquids
• dust that readily burns
• dust that explodes in
air
Slight Health Hazard Rating
• Health
Rating “0”
3
00
1
OX
• exposure
under fire
conditions
offer no
hazard
beyond that
of
combustible
material
Minor Reactivity Hazard Rating
Reactivity Rating
“1”
3
10
1
OX
• materials
must be
preheated
before ignition
can occur
• includes
most ordinary
combustible
materials
Special Hazard Rating
Special Hazard
Rating “OX”
3
OX0
OX
1
• materials, on
exposure
under fire
conditions,
would offer no
hazard
beyond that of
combustible
material
What does this NFPA Diamond mean?
3
4
2
W
White – Special Hazard
The white "special notice" area can contain several symbols. The
following symbols are defined by the NFPA 704 standard:
• W: reacts with Water in an unusual or
dangerous manner (e.g., caesium,
sodium)
• OX or OXY: Oxidizer (e.g., potassium
perchlorate, ammonium nitrate)
• SA: Simple asphyxiant gas (includes
nitrogen, helium, neon, argon, krypton,
or xenon)
Non-standard symbols:
Note: These symbols are not part of the NFPA 704 standard, but occasionally used in an
unofficial manner. The use of non-standard symbols or text may be permitted, required or
disallowed by the authority having jurisdiction (e.g., fire department).
• COR: Corrosive; strong acid or base (e.g.
sulfuric acid, potassium hydroxide)
– ACID and ALK to be more specific.
• BIO: Biological hazard (e.g., smallpox virus)
• POI: Poisonous (e.g. Spider Venom),
• (the Radioactive trefoil): is radioactive (e.g.,
plutonium, uranium)
• CRY or CRYO: Cryogenic (e.g. Liquid
Nitrogen)