personal protection what are you trying to protect?
TRANSCRIPT
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Personal Protection
What are you trying to protect?
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Eyes, skin and membranes Hands and feet Fingers and toes Respiratory System Digestive system
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Routes of exposure
Absorption Injection Ingestion Inhalation – most common route
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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
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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
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Fume hoods – purpose of baffles
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Non-bypass fume hood
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Bypass fume hood
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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…..
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The eye
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Eye and face protection
Simulation of chemicals in the eye6 M HCl6 M NaOHHousehold chemicals
Adapted from Chem Fax 801, Flinn Scientific, 1996
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Laws and Regulations
OSHA Face and Eye Protection29 CFR 1910.133“employers must provide appropriate face
and eye protection” Washington State requires eye
protectionRCW 70.100.010 to .040
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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
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“You can eat with false teeth, you can dance with a wooden leg, but you can’t see with a glass eye.”
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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
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Three layers
- epidermis- dermis- hypodermis
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OSHA Skin Protection Standard
Hand Protection Standard29 CFR 1910.138
No one material is suited for all applications
Exposures include chemicals, cuts, abrasions, heat, cold
Latex gloves can trigger allergies….
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Clothing selection
Clothing, hair and jewelry – Shoes Protective clothing
- lab coats and aprons
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Properties of common clothing fibers
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Personal Protection
Suitable for the hazard Provides the appropriate level of
protection Properly maintained Meets the regulatory requirements