Module 3d Module 3d The Nine Hazard ClassesThe Nine Hazard Classes

Placards, Labels and Other Information

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

Ohio Department of Health

CLASS 1- EXPLOSIVES CLASS 1- EXPLOSIVES PLACARDSPLACARDS

Ohio Department of Health

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

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”.

Ohio Department of Health

CLASS 2- Gases PlacardsCLASS 2- Gases Placards

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

Ohio Department of Health

COULD THIS BLEVE?

Relief valve venting

Leak venting, not normal it has ignited

Remember the position of the

poles

Ohio Department of Health

Notice the position of the fire apparatus

Ohio Department of Health

Where is the fire Where is the fire apparatus?apparatus?

Ohio Department of Health

12 firefighters died here, you 12 firefighters died here, you can’t run fast enough!can’t run fast enough!

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.

Ohio Department of Health

Hazard Class 3- Flammable Hazard Class 3- Flammable and Combustible Placardsand Combustible Placards

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

Ohio Department of Health

Hazard Class 4 - PlacardsHazard Class 4 - Placards

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

Ohio Department of Health

Hazard Class 5- Oxidizers Hazard Class 5- Oxidizers and Organic Peroxides and Organic Peroxides PlacardsPlacards

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

Ohio Department of Health

Hazard Class 6 PlacardsHazard Class 6 Placards

Ohio Department of Health

INFECTOUS WASTEINFECTOUS WASTE

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

Ohio Department of Health

Hazard Class 7- Radioactive Hazard Class 7- Radioactive PlacardsPlacards

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.

Ohio Department of Health

Hazard Class- 8 Corrosive Hazard Class- 8 Corrosive Materials PlacardsMaterials Placards

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.

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.

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.

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).

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.

Ohio Department of Health

Military PlacardsMilitary PlacardsMany m

ilitary placards are the same as

UN/NA

More Military…...More Military…...

Some resemble UN/NA and some are

completely different

More Military…...More Military…...

Toxic or Harmful

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?________________