Appendix L - EHS Segregation Scheme

• Hazard Class # – All Hazard Classes must be segregated from other Hazard Classes

  • Class - must segregate from other Classes within Hazard Class
    • Group - recommend to segregate from other groups within class

Hazard Class 1 - Explosives (potentially explosive) Hazard Class 2 - Compressed Gases/Lecture Bottles

• Class 2.1 - Flammable gases

• Class 2.2 - Non-Flammable gases
• Class 2.3 - Poisonous gases
• Oxidizing gases (separate from everything)
• Corrosive - acids
• Corrosive - bases
• Cyrogenics
• Pyrophorics

Hazard Class 3 - Flammable liquids

• Combustible liquids (that do not have another hazard)

Hazard Class 4 - Flammable solids

• Class 4.2 - Spontaneously combustible

• Class 4.3 - Dangerous When Wet
• Class 4.1 - Flammable solids

Hazard Class 5 - Oxidizers

• Class 5.1 - Oxidizers

  • Liquids
  • Solids
• Class 5.2 - Organic peroxides

Hazard Class 6 - Poisons

• Class 6.1 - Poisons

  • Liquids
  • Solids
  • Carcinogens
  • Reproductive hazards (Teratogens, Mutagens)
  • Irritants
  • Organic acids, solid
  • Nonhazardous chemicals
• Poisonous Inhalation Hazards (PIH)
• Cyanides
• Controlled substances
• Class 6.2 - Biohazards - Infectious agents
  • CDC Select agents

Hazard Class 7 - Radioactives

Hazard Class 8 - Corrosives

• Inorganic acids

• Oxidizing acids (Nitric acid and Perchloric acid)
• Hydrofluoric acid
• Organic acids, liquid (can store in flammable cabinet)
• Bases
  • Liquids
  • Solids