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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. 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

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Module 3d The Nine Hazard Classes

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  1. Module 3d The Nine Hazard Classes Placards, Labels and Other Information

  2. 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 Ohio Department of Health

  3. CLASS 1- EXPLOSIVES PLACARDS Ohio Department of Health

  4. Terror In America! Ohio Department of Health

  5. 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 Ohio Department of Health

  6. 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) Ohio Department of Health *The word “poison” or “poisonous” are synonymous with the word “toxic”.

  7. CLASS 2- Gases Placards Ohio Department of Health

  8. 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 Ohio Department of Health

  9. COULD THIS BLEVE? Relief valve venting Remember the position of the poles Leak venting, not normal it has ignited Ohio Department of Health

  10. Notice the position of the fire apparatus Ohio Department of Health

  11. Where is the fire apparatus? Ohio Department of Health

  12. YES! It can BLEVE!! 12 firefighters died here, you can’t run fast enough! Ohio Department of Health

  13. 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 1RULE- ELIMINATE IGNITION SOURCES. Ohio Department of Health

  14. Hazard Class 3- Flammable and Combustible Placards Ohio Department of Health

  15. Hazard Class 4 - Flammable Solids • Three subdivisions • 4.1 - Flammable solids • 4.2 - Spontaneously combustible • 4.3 - Dangerous when wet Ohio Department of Health

  16. Hazard Class 4 - Placards Ohio Department of Health

  17. 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 violentcombustion • Many organic peroxides are very unstable Ohio Department of Health

  18. Hazard Class 5- Oxidizers and Organic Peroxides Placards Ohio Department of Health

  19. 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 Ohio Department of Health

  20. Hazard Class 6 Placards Ohio Department of Health

  21. INFECTOUS WASTE Ohio Department of Health

  22. 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 Ohio Department of Health

  23. Hazard Class 7- Radioactive Placards Ohio Department of Health

  24. 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. Ohio Department of Health

  25. Hazard Class- 8 Corrosive Materials Placards Ohio Department of Health

  26. 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. Ohio Department of Health

  27. 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. Ohio Department of Health

  28. Placard any quantity of these 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. Enter Division Number 1.1, 1.2, or 1.3 and compatibility group letter, when required. Placard any quantity DANGEROUS WHEN WET Placard any quantity ofDivision 4.3material Enter compatibility group letter, when required. Placard 454 kg (1,001 lbs.) 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. Placard any quantity of Division 2.3 material. Ohio Department of Health

  29. 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). Ohio Department of Health

  30. 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. Ohio Department of Health

  31. Military Placards Many military placards are the same as UN/NA Ohio Department of Health

  32. More Military…... Some resemble UN/NA and some are completely different

  33. More Military…... Toxic or Harmful

  34. 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?________________ Ohio Department of Health

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