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Module 3d Module 3d The Nine Hazard ClassesThe Nine Hazard Classes
Placards, Labels and Other Information
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Ohio Department of Health
Hazard Class 1 - Hazard Class 1 - ExplosivesExplosives
Subdivided into 6 divisions1.1-Mass explosion hazard1.2- Projectile hazard1.3- Fire, minor blast or projectile1.4- Minor explosion1.5- Very insensitive explosives1.6- Extremely insensitive
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Ohio Department of Health
CLASS 1- EXPLOSIVES CLASS 1- EXPLOSIVES PLACARDSPLACARDS
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Ohio Department of Health
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Ohio Department of Health
Hazard Class 2 - GasesHazard Class 2 - Gases
Pressurized or Liquified Compressed nitrogen and liquified
petroleum gases (LPG) are examplesProduct and container present
hazardsSubdivided into 4 divisions
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Ohio Department of Health
Hazard Class 2- GasesHazard Class 2- Gases
Subdivided into 4 divisions 2.1 - Flammable gases 2.2 - Non-flammable,non-
toxic*compresses gases 2.3 - Gases toxic* by inhalation 2.4 - Corrosive gases (Canada)
*The word “poison” or “poisonous” are synonymous with the word “toxic”.
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Ohio Department of Health
CLASS 2- Gases PlacardsCLASS 2- Gases Placards
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Ohio Department of Health
B L E V EB L E V EBoiling, Liquid, Expanding, Vapor,
ExplosionAdded DANGERDANGER with Class 2 hazmatsBesides the chemicals, there is danger of
explosion of the tank from over pressureTanks should always be cooledRelief valves should be allowed to ventStay away from tank ends
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Ohio Department of Health
COULD THIS BLEVE?
Relief valve venting
Leak venting, not normal it has ignited
Remember the position of the
poles
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Ohio Department of Health
Notice the position of the fire apparatus
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Ohio Department of Health
Where is the fire Where is the fire apparatus?apparatus?
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Ohio Department of Health
12 firefighters died here, you 12 firefighters died here, you can’t run fast enough!can’t run fast enough!
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Ohio Department of Health
Hazard Class 3 Hazard Class 3 Flammable/Combustible Flammable/Combustible LiquidsLiquids
Flammable liquids can be ignited at room temperature.
Combustible liquids require some degree of pre-heating to ignite.
Number 1 RULE- ELIMINATE IGNITION SOURCES.
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Ohio Department of Health
Hazard Class 3- Flammable Hazard Class 3- Flammable and Combustible Placardsand Combustible Placards
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Ohio Department of Health
Hazard Class 4 - Flammable Hazard Class 4 - Flammable SolidsSolids
Three subdivisions 4.1 - Flammable solids 4.2 - Spontaneously combustible 4.3 - Dangerous when wet
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Ohio Department of Health
Hazard Class 4 - PlacardsHazard Class 4 - Placards
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Ohio Department of Health
Hazard Class 5 - Oxidizers Hazard Class 5 - Oxidizers and Organic Peroxidesand Organic Peroxides
Oxidizers release oxygen to enhance or intensify burn
Strong fuels, oxidizers can create conditions which can lead to violent combustion
Many organic peroxides are very unstable
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Ohio Department of Health
Hazard Class 5- Oxidizers Hazard Class 5- Oxidizers and Organic Peroxides and Organic Peroxides PlacardsPlacards
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Ohio Department of Health
Hazard Class 6 - Poisonous Hazard Class 6 - Poisonous and Infectious Substancesand Infectious Substances
Division 6.1 Toxic materials Can include severely irritating substances “Tear Gas”, Hydrocyanic acid, Carbon
tetrachlorideDivision 6.2 Infectious Substances
Potential to cause diseases in humans Anthrax, human blood and many body
fluids
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Ohio Department of Health
Hazard Class 6 PlacardsHazard Class 6 Placards
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Ohio Department of Health
INFECTOUS WASTEINFECTOUS WASTE
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Ohio Department of Health
Hazard Class 7 - Radioactive Hazard Class 7 - Radioactive MaterialsMaterials
Three Types: Alpha, Beta, GammaIonizing radiation hazardExposure does not always result in
contaminationSafety Rules:
Time, Distance and Shielding
Shipped in specialized containers
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Ohio Department of Health
Hazard Class 7- Radioactive Hazard Class 7- Radioactive PlacardsPlacards
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Ohio Department of Health
Hazard Class 8 - Corrosive Hazard Class 8 - Corrosive MaterialsMaterials
Those materials which can cause irreversible damage to human tissue.
In addition, the fumes or vapors from many of the materials are also very hazardous.
Examples: nitric acid, sodium hydroxide (caustic soda or lye), hydrochloric acid.
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Ohio Department of Health
Hazard Class- 8 Corrosive Hazard Class- 8 Corrosive Materials PlacardsMaterials Placards
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Ohio Department of Health
Hazard Class 9 - Hazard Class 9 - Miscellaneous Dangerous Miscellaneous Dangerous Goods(ORM-D)Goods(ORM-D)
Division 9.1 Misc. dangerous
goods.
Division 9.2 Environmentally
hazardous
substances.
Division 9.3 Dangerous waste.
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Ohio Department of Health
Hazard Class 9- Hazard Class 9- Miscellaneous dangerous Miscellaneous dangerous goods Placardsgoods Placards
Miscellaneous Not required for domestic transortation. Placard 454 kg (1,001) lbs.) or more gross weight ofmaterial which presents a hazard during the transport, but is not included in any other hazard class.
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Ohio Department of Health
Placard any quantity of Placard any quantity of thesethese
Enter Division Number 1.1, 1.2, or 1.3 and compatibility group
letter, when required. Placard any quantity
Enter compatibility group letter,
when required. Placard 454 kg
(1,001 lbs.)
Placard any quantity ofDivision 2.3 material.
DANGEROUS WHEN WETPlacard any quantity
ofDivision 4.3material
POISON Placard any quantity of 6.1, PGI, inhalation hazard only. Placard 454 kg (1,001 lbs.) or more or PG or II, other than PGI inhalation hazard.
RADIOACTIVE Placard any quantity of packaging bearing the RADIOACTIVE III label. Certain low specific activity radioactive materials in "exclusive use" will not bear the label but RADIOACTIVE placard is required.
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Ohio Department of Health
Subsidiary RiskSubsidiary Risk
Class numbers do not appear on subsidiary risk placard
Placard empty tank cars for residue of material last contained.
Required background for placards on rail shipments of certain explosives and poisons. Also required for highway route-controlled quantities of radioactive materials (see §§172.507 and 172.510).
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Ohio Department of Health
The DANGEROUS PlacardThe DANGEROUS Placard
Placard 454 kg (1,001 lbs.) gross weight of two or more categories of hazardous materials listed in Table 2. A freight container, until load device, motor vehicle, or rail car which contain non-bulk packaging with two or more categories of hazardous materials that require placard specified in Table 2 may be placarded with a DANGEROUS placard instead of the separate placarding specified for each of the materials in Table 2. However, when 2.268 kg (5,000 lbs.) or more of one category of materials is loaded at one facility, the placard specified in Table 2 must be applied.
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Ohio Department of Health
Military PlacardsMilitary PlacardsMany m
ilitary placards are the same as
UN/NA
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More Military…...More Military…...
Some resemble UN/NA and some are
completely different
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More Military…...More Military…...
Toxic or Harmful
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Ohio Department of Health
Review -- Placards Etc.Review -- Placards Etc. There are ________Classes of Hazmat Green is associated with _______________Placard Yellow is associated with Class _______________ Explain the acronym BLEVE_____________ ____ __________________________________ A blue placard means what?_________________ Corrosive Materials can do what?________________ Flammable and Combustible liquids are in the same
class, what separates one from the other?__________ Class 2 has flammables, non flammables, poisons
etc., what is the common denominator?________________