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Personal Protection

Personal Protection. What are you trying to protect?. Eyes, skin and membranes Hands and feet Fingers and toes Respiratory System Digestive system. Routes of exposure. Absorption Injection Ingestion Inhalation – most common route. Physical hazards.

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Personal Protection

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  1. Personal Protection What are you trying to protect?

  2. Eyes, skin and membranes • Hands and feet • Fingers and toes • Respiratory System • Digestive system

  3. Routes of exposure • Absorption • Injection • Ingestion • Inhalation – most common route

  4. Physical hazards • Flying particles – explosion or impact • Very cold materials – cryogens • Molten metals and other very hot materials • Radiation • Falling or flying heavy objects – gas cylinders • Electric shock • Noise

  5. Hazard Control • Administrative – training and choices of activities and experiments • Appropriate attire – closed toes shoes, long hair tied back • Engineering – hoods, shields • Protective equipment – goggles, gloves, lab coats, aprons

  6. Fume hoods – purpose of baffles

  7. Non-bypass fume hood

  8. Bypass fume hood

  9. Auxiliary or “make up” air • Minimizes loss of conditioned air • Non-conditioned air enters top of hood at by-pass area • Technical problems have decreased usage…..

  10. The eye

  11. Eye and face protection • Simulation of chemicals in the eye 6 M HCl 6 M NaOH Household chemicals Adapted from Chem Fax 801, Flinn Scientific, 1996

  12. Laws and Regulations • OSHA Face and Eye Protection 29 CFR 1910.133 “employers must provide appropriate face and eye protection” • Washington State requires eye protection RCW 70.100.010 to .040

  13. Contact Lenses in the Lab • Generally considered acceptable because: - better peripheral vision - more comfortable - soft contacts absorb UV, protecting cornea - some very limited protection from chemicals

  14. “You can eat with false teeth, you can dance with a wooden leg, but you can’t see with a glass eye.”

  15. Skin Protection • The largest organ in the body! • About 3’ x 7’ for the average adult • Regulates gody temperature • Acts as a barrier to bacteria • Excretes salts and liquids • Provides sense of touch

  16. Three layers - epidermis - dermis - hypodermis

  17. OSHA Skin Protection Standard • Hand Protection Standard 29 CFR 1910.138 • No one material is suited for all applications • Exposures include chemicals, cuts, abrasions, heat, cold • Latex gloves can trigger allergies….

  18. Clothing selection • Clothing, hair and jewelry – • Shoes • Protective clothing - lab coats and aprons

  19. Properties of common clothing fibers

  20. Personal Protection • Suitable for the hazard • Provides the appropriate level of protection • Properly maintained • Meets the regulatory requirements

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