personal protective equipment (ppe). factors affecting chemical resistance 1.length of exposure time...
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Personal Protective Equipment (PPE)
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FACTORS AFFECTING CHEMICAL RESISTANCE1. Length of exposure time• thin materials for one application
– disposable
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FACTORS AFFECTING CHEMICAL RESISTANCE2. Exposure situation• depends on task, sharp or rough
objects
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FACTORS AFFECTING CHEMICAL RESISTANCE3. Type of chemical• Some are corrosive
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CHEMICAL RESISTANT MATERIALS
Materials NOT resistent:• cotton• leather• canvas
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CHEMICAL RESISTANT MATERIALS
• rubber or plastic• non-woven fabric
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PROTECTING SKIN
• most exposure• long-sleeved shirt and long-legged
pants
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PROTECTING SKIN
Body
Coveralls• clothes underneath• loose to provide air
layers
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PROTECTING SKIN
Body
Chemical-resistant suit• chemical is very hazardous• “rain suit”• heat stress
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PROTECTING SKIN
Body
Chemical-resistant apron• mixing and loading
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PROTECTING SKIN
Hand and Foot
Gloves• hands and forearms• whenever handling pesticides• if working overhead or below to
wear glove in or out of suit
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PROTECTING SKIN
Hand and Foot
• exposure occurs when gloves removed briefly– adjusting equipment– scratching face
• always wash gloves before removed
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Hand and Foot
• Latex for minor handling and single use
PROTECTING SKIN
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PROTECTING SKIN
Hand and Foot
Footwear• Chemical-resistant shoes• Not canvas, cloth, and leather
– Unless shoe covers
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PROTECTING SKIN
Head and Neck
• Working overhead wide-brim resistant
• Greenhouse or trees• Hood is for drift from booms
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PROTECTING EYES
• goggles, safety glasses, or face shield
• shield in addition to goggles during mixing
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PROTECTING RESPIRTORY
Respiratory protection - must be NIOSH and MSHA approved
• enclosed area• long period of exposed
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Air-supplying Respirator
air-supplying - air is from independent source– oxygen supply is low– fumigation
• supplied - limited by the length of hose
• self-containing - canister of air, 30 - 45 minutes
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Air-purifying Respirator
air-purifying - filter contaminants• dusts, mists, gases and vapors
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Cartridges1. dust/mist-filtering• replace filters when difficult to
breathe
Air-purifying Respirator
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Cartridges2. vapor-removing material
– Activated charcoal
• change when noticing odor or taste• replace after 8 hours use
Air-purifying Respirator
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Air-purifying Respirator
Non-powered air-purifying respirator• require operator to draw air
through filters• exhausting
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Air-purifying Respirator
Powered air-purifying respirator (PAPR)
• assist operator in drawing air• not air-supplying
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Air-purifying Respirator
Face-sealing respirators• tight seal
– no facial hair
• full-face styles better than half-face
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Air-purifying Respirator
Face-sealing respirators• fit test: testing whether operator
can detect substance• fit check:
– #1, close inlet, breathe in, hold 10 seconds with mask collapsed
– #2, cover outlet and exhale until mask inflates
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Air-purifying Respirator
Loose-fitting respirators• Pump through filter into helmet or
hood– Facial hair allowed
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MAINTAINING PPE
Disposables: not be washed• latex gloves• shoe covers• non-woven coveralls• cartridges and filters
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MAINTAINING PPE
Reusable: reused several times• rubber and plastic equipment
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MAINTAINING PPE
Reusable gloves• holes (ballooning)• replace gloves after 5 to 7 days of
work– heavy-duty: 10 to 14 days
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MAINTAINING PPE
• fabric coveralls: clean after every use
• throw away if drenched with chemical labeled “DANGER” or “WARNING”
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MAINTAINING PPE
Cleaning equipment• detergent and hot water• sanitize: 2 minutes in 2 tbs bleach
in one gallon of hot water then rinse
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MAINTAINING PPE
Personal equipment• wash clothes in hot water separate
from regular laundry• Dry outdoors
– Sunlight