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Published on January 19, 2008

Author: Veronica1

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Module 3d The Nine Hazard Classes :  Module 3d The Nine Hazard Classes Placards, Labels and Other Information Hazard Class 1 - Explosives:  Hazard Class 1 - Explosives Subdivided into 6 divisions 1.1-Mass explosion hazard 1.2- Projectile hazard 1.3- Fire, minor blast or projectile 1.4- Minor explosion 1.5- Very insensitive explosives 1.6- Extremely insensitive CLASS 1- EXPLOSIVES PLACARDS:  CLASS 1- EXPLOSIVES PLACARDS Hazard Class 2 - Gases:  Hazard Class 2 - Gases Pressurized or Liquified Compressed nitrogen and liquified petroleum gases (LPG) are examples Product and container present hazards Subdivided into 4 divisions Hazard Class 2- Gases:  Hazard 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”. CLASS 2- Gases Placards:  CLASS 2- Gases Placards B L E V E :  B L E V E Boiling, Liquid, Expanding, Vapor, Explosion Added DANGER with Class 2 hazmats Besides the chemicals, there is danger of explosion of the tank from over pressure Tanks should always be cooled Relief valves should be allowed to vent Stay away from tank ends Slide10:  COULD THIS BLEVE? Relief valve venting Leak venting, not normal it has ignited Remember the position of the poles Slide11:  Notice the position of the fire apparatus Slide12:  Where is the fire apparatus? Slide13:  12 firefighters died here, you can’t run fast enough! Hazard Class 3 Flammable/Combustible Liquids:  Hazard Class 3 Flammable/Combustible Liquids Flammable liquids can be ignited at room temperature. Combustible liquids require some degree of pre-heating to ignite. Number 1 RULE- ELIMINATE IGNITION SOURCES. Hazard Class 3- Flammable and Combustible Placards:  Hazard Class 3- Flammable and Combustible Placards Hazard Class 4 - Flammable Solids:  Hazard Class 4 - Flammable Solids Three subdivisions 4.1 - Flammable solids 4.2 - Spontaneously combustible 4.3 - Dangerous when wet Hazard Class 4 - Placards:  Hazard Class 4 - Placards Hazard Class 5 - Oxidizers and Organic Peroxides:  Hazard Class 5 - Oxidizers and 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 Hazard Class 5- Oxidizers and Organic Peroxides Placards:  Hazard Class 5- Oxidizers and Organic Peroxides Placards Hazard Class 6 - Poisonous and Infectious Substances:  Hazard Class 6 - Poisonous and Infectious Substances Division 6.1 Toxic materials Can include severely irritating substances “Tear Gas”, Hydrocyanic acid, Carbon tetrachloride Division 6.2 Infectious Substances Potential to cause diseases in humans Anthrax, human blood and many body fluids Hazard Class 6 Placards:  Hazard Class 6 Placards INFECTOUS WASTE:  INFECTOUS WASTE Hazard Class 7 - Radioactive Materials:  Hazard Class 7 - Radioactive Materials Three Types: Alpha, Beta, Gamma Ionizing radiation hazard Exposure does not always result in contamination Safety Rules: Time, Distance and Shielding Shipped in specialized containers Hazard Class 7- Radioactive Placards:  Hazard Class 7- Radioactive Placards Hazard Class 8 - Corrosive Materials:  Hazard Class 8 - Corrosive Materials 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. Hazard Class- 8 Corrosive Materials Placards:  Hazard Class- 8 Corrosive Materials Placards Hazard Class 9 - Miscellaneous Dangerous Goods(ORM-D):  Hazard Class 9 - Miscellaneous Dangerous Goods(ORM-D) Division 9.1 Misc. dangerous goods. Division 9.2 Environmentally hazardous substances. Division 9.3 Dangerous waste. Hazard Class 9- Miscellaneous dangerous goods Placards:  Hazard Class 9- Miscellaneous dangerous goods Placards Miscellaneous Not required for domestic transortation. Placard 454 kg (1,001) lbs.) or more gross weight of material which presents a hazard during the transport, but is not included in any other hazard class. Placard any quantity of these:  Placard any quantity of these 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 of Division 2.3 material. DANGEROUS WHEN WET Placard 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. Subsidiary Risk:  Subsidiary 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). The DANGEROUS Placard:  The 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. Military Placards:  Military Placards Many military 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 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?________________

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