Safety Training Presentation Working Safely With Benzene 29 CFR 1910.1028.
Transcript of Safety Training Presentation Working Safely With Benzene 29 CFR 1910.1028.
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Safety Training Presentation
Working Safely With Benzene29 CFR 1910.1028
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Goals
Health and fire hazards, exposure monitoring Controls, safe work practices, PPE Quiz
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Benzene Uses
Solvent for making other chemicals and plastic
Manufacture of detergents and pharmaceuticals
Gasoline
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Potential Exposure
Work in industries that manufacture or use benzene
Emissions from burning coal, oil, vehicles, gasoline
Tobacco smoke Drinking contaminated water
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Physical Properties
Colorless liquid Volatile Heavier than air Highly flammable Sweet odor
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Acute Health Effects
Irritated eyes and skin Irritated nose and throat Skin redness and blisters Dizziness, headache,
vomiting Convulsions, coma, death
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Chronic Health Effects
Causes drying or scaling of skin Affects blood cells Causes chromosomal aberrations May effect reproductive systems Causes cancer—leukemia
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Fire Hazards
Flammable liquid Poisonous gases produced Vapor is heavier than air Benzene floats on water Use dry chemical,
CO2, water spray, foam
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Workplace Limits
OSHA: 8 hours - 1 ppm; 15-min. – 5 ppm ACGIH: 8 hours - 0.5 ppm; 15-min. – 2.5 ppm NIOSH: 10 hours - 0.1 ppm; 15-min. – 1 ppm Carcinogens may not have a safe exposure
level
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Exposure Monitoring
Breathing zone air samples 8-hour time weighted
average Short-term exposure levels Test urine samples
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More Exposure Monitoring
Monitoring frequency Termination of monitoring More monitoring Employee notification
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Goals
Health and fire hazards, exposure monitoring Controls, safe work practices, PPE Quiz
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Exposure Above the PEL
Engineering controls and work practices
Respiratory protection Written compliance
program
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Engineering Controls
Enclose or isolate operations
Local exhaust ventilation
Automatic and enclosed pump systems
Vapor control system
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Safe Work Practices
Remove contaminated clothing
Do not take contam-inated clothing home
Eye wash station should be provided
Emergency shower should be provided
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More Safe Work Practices
Shower at end of work shift Do not eat, drink, or smoke
near benzene Wash hands before eating,
smoking, using restroom Confined spaces—check
for explosive gases
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Handling and Storage
Regulate and mark area Keep away from oxidizing agents Store in tightly closed container No smoking or sources of ignition Ground containers during transfer Use non-sparking tools
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Communicating Benzene Hazards
Post signs –Danger Benzene
–Cancer Hazard
–Flammable—No Smoking
–Authorized Personnel Only
–Respirator Required
Label containers Material Safety Data Sheets
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Personal Protective Equipment
Solvent-resistant clothing and gloves
Butyl Neoprene, VitonTM/Neoprene
Goggles Face shield
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Respiratory Protection
Installation of engineering controls, maintenance, emergencies
Respiratory protection program < 50 ppm – full-face organic vapor < 100 ppm – full-face powered organic vapor < 1,000 ppm – full-face supplied air > 1,000 ppm – full-face SCBA
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First-Aid
Eyes—flush with water Skin—remove clothing,
wash with soap and water Breathing—get to
fresh air Swallowing—do
not induce vomiting
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Spills
Evacuate from spill area Remove ignition sources Cover with activated
charcoal adsorbent Ventilate and wash area
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Medical Surveillance
Before beginning employment
Regular intervals after that
Emergency exams Blood count Past and present symptoms Physician’s written opinion
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Goals
Health and fire hazards, exposure monitoring Controls, safe work practices, PPE Quiz
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Summary
Hazards of benzene Workplace exposure Follow all safe work practices Wear PPE Medical surveillance
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Quiz & Review
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Quiz
1. What does benzene look and smell like?
2. Describe some acute health effects of breathing benzene vapors.
3. What type of cancer is linked to chronic exposure?
4. Besides a health hazard, what other hazard does benzene present?
5. What do TWA and STEL stand for when discussing air monitoring?
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Quiz (cont.)
6. Describe a benzene engineering control.
7. Discuss good hygiene practices when working with benzene.
8. Describe safe practices when transferring benzene.
9. What materials should protective gloves and clothes be made of?
10. Who should be involved in the medical surveillance program?
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Quiz Answers
1. Colorless liquid with a sweet odor
2. Irritate nose and throat, dizziness, headache, vomiting, convulsions, coma, death
3. Leukemia
4. Benzene is a fire hazard
5. TWA—8-hour time weighted average, STEL—short-term exposure level
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Quiz Answers (cont.)
6. Engineering controls include enclosure, local ventilation
7. Wash before eating, smoking; wash at end of shift; remove contaminated clothes
8. No smoking, ground containers, non-sparking tools
9. Butyl Neoprene, VitonTM/Neoprene
10. Anyone that could potentially be exposed to benzene