GRADE 11. A lesson in working life for students in ... (PPE) available. Biological
and Chemical Hazards OH 1 .... Test the atmosphere. Biological and Chemical ...
BIOLOGICAL AND CHEMICAL HAZARDS
GRADE 11 A lesson in working life for students in Ontario Secondary Schools
Biological and Chemical Hazards OH
WHMIS Necessities 1. Inventory 2. Labels in place 3. Material Safety Data Sheets available 4. Training 5. Required Personal Protective Equipment (PPE) available
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Inventory
• Lists chemicals present in the workplace • States whether they have a supplier label or a workplace label Biological and Chemical Hazards OH 2
WHMIS Exemptions
Consumer products Food and drugs Pest control products
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Supplier Label
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Workplace Label
Gasoline Flammable Liquid Keep away from ignition sources FOR ADDITIONAL INFORMATION REFER TO MATERIAL SAFETY DATA SHEET
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MSDS (Material Safety Data Sheet)
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MSDS Categories 1. Product identification 2. Hazardous ingredients 3. Physical data 4. Fire and explosion data 5. Reactivity data 6. Toxicological properties 7. Preventative measures 8. Emergency and first aid measures 9. Preparation information Biological and Chemical Hazards OH 7
Safety precautions: • Handwashing • No smoking, eating at workstations
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Injection
Safety Precautions: • Safe handling of sharps • Proper disposal • Hand protection
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The Right PPE
✔ Follow the manufacturer’s instructions ✔ No new hazards ✔ No interferences
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What Makes a Fire? Fire Tetrahedron • Fuel • Oxygen • Temperature • Chemical/Chain Reaction
Take away any of the above and the fire will stop!
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Common Compressed Gases
Gas
Use
Acetylene
Welding
Nitrous oxide
Dentistry, medical
Propane
Barbecue fuel
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Compressed Gases WHMIS symbol
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Sean Kells
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Bonding and Grounding
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Infectious Biological Agents Biological Hazard WHMIS Symbol
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Who’s at Risk?
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Inhalation
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Ingestion
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Injection
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Absorption
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Disease Control
To prevent the spread of disease and protect yourself: • Wash • Cover up • Disinfect • Sterilize
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Handwashing Tips
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Cover Up
• Cover cuts • Cover your mouth • Cover your skin • Cover your hair
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Sterilization
ETO Sterilizer Biological and Chemical Hazards OH 33
Handling Food
• Use proper handwashing techniques • Store foods promptly • Keep raw and cooked foods separate • Keep preparation surfaces and utensils clean to avoid cross-contamination Biological and Chemical Hazards OH 34
Handling People
Universal Precautions: • Handwashing • Use Personal Protective Equipment
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Handling Infants
• Disinfect bottles • Wash hands • Vaccination
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Hazards in Agriculture and Landscaping
Chemical Hazards • Fertilizers • Pesticides
Biological Hazards • Fungi • Grain dust • Animal wastes Biological and Chemical Hazards OH 37
BIOLOGICAL and CHEMICAL HAZARDS
GRADE 12 A lesson in working life for students in Ontario Secondary Schools
Biological and Chemical Hazards OH
Hazards in Science
• Chemicals • Compressed gases • Moulds and bacteria • Contagious people Biological and Chemical Hazards OH 38
Assessing Biological Hazards Modes of transmission • Direct • Indirect – Vehicle-borne – Vector-borne – Airborne
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Assessing Chemical Hazards • Properties – Read the MSDS – Flammable vs combustible liquids
• Intended use – Confined space vs outdoors – With or without other chemicals Biological and Chemical Hazards OH 40
Engineering Controls
• Isolation • Proper Storage • Ventilation
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Work Practices: Universal Precautions ✔ Proper gloves ✔ Cover cuts ✔ Wash hands ✔ Proper handling and disposing of sharps, needles ✔ Medical assistance ✔ Contact supervisor
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Personal Protective Equipment • Gloves, safety glasses, respirators, masks, impervious clothing • “Last line of defence” • Must fit properly
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Latex Allergies • See your doctor • Tell your employer • Substitute
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Controlling Hazards
• Disinfection • Handwashing • Personal Protective Equipment • Training
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Hazards in Hairstyling and Aesthetics
• Diseases and skin infections i.e. folliculitis • Chemicals in dyes, perm solutions, nail polish remover and nail adhesives Biological and Chemical Hazards OH 46
Before you start work
RECOGNIZE ASSESS CONTROL
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Injection
• Needlestick injuries • Cuts from handling broken glass or other sharp objects
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Welding Safety
• Wear required PPE • Special training required for welding in confined spaces • Secure gas cylinders • Test the atmosphere Biological and Chemical Hazards OH 49
Hazards in Construction
• Dust • Paints and solvents • Fuels, compressed gases • Lime in concrete • Fibreglass or asbestos fibres Biological and Chemical Hazards OH 50