Safety Training Presentation Working Safely With Benzene 29 CFR 1910.1028
Dec 14, 2015
Safety Training Presentation
Working Safely With Benzene29 CFR 1910.1028
Goals
Health and fire hazards, exposure monitoring Controls, safe work practices, PPE Quiz
Benzene Uses
Solvent for making other chemicals and plastic
Manufacture of detergents and pharmaceuticals
Gasoline
Potential Exposure
Work in industries that manufacture or use benzene
Emissions from burning coal, oil, vehicles, gasoline
Tobacco smoke Drinking contaminated water
Physical Properties
Colorless liquid Volatile Heavier than air Highly flammable Sweet odor
Acute Health Effects
Irritated eyes and skin Irritated nose and throat Skin redness and blisters Dizziness, headache,
vomiting Convulsions, coma, death
Chronic Health Effects
Causes drying or scaling of skin Affects blood cells Causes chromosomal aberrations May effect reproductive systems Causes cancer—leukemia
Fire Hazards
Flammable liquid Poisonous gases produced Vapor is heavier than air Benzene floats on water Use dry chemical,
CO2, water spray, foam
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
Exposure Monitoring
Breathing zone air samples 8-hour time weighted
average Short-term exposure levels Test urine samples
More Exposure Monitoring
Monitoring frequency Termination of monitoring More monitoring Employee notification
Goals
Health and fire hazards, exposure monitoring Controls, safe work practices, PPE Quiz
Exposure Above the PEL
Engineering controls and work practices
Respiratory protection Written compliance
program
Engineering Controls
Enclose or isolate operations
Local exhaust ventilation
Automatic and enclosed pump systems
Vapor control system
Safe Work Practices
Remove contaminated clothing
Do not take contam-inated clothing home
Eye wash station should be provided
Emergency shower should be provided
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
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
Communicating Benzene Hazards
Post signs –Danger Benzene
–Cancer Hazard
–Flammable—No Smoking
–Authorized Personnel Only
–Respirator Required
Label containers Material Safety Data Sheets
Personal Protective Equipment
Solvent-resistant clothing and gloves
Butyl Neoprene, VitonTM/Neoprene
Goggles Face shield
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
First-Aid
Eyes—flush with water Skin—remove clothing,
wash with soap and water Breathing—get to
fresh air Swallowing—do
not induce vomiting
Spills
Evacuate from spill area Remove ignition sources Cover with activated
charcoal adsorbent Ventilate and wash area
Medical Surveillance
Before beginning employment
Regular intervals after that
Emergency exams Blood count Past and present symptoms Physician’s written opinion
Goals
Health and fire hazards, exposure monitoring Controls, safe work practices, PPE Quiz
Summary
Hazards of benzene Workplace exposure Follow all safe work practices Wear PPE Medical surveillance
Quiz & Review
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?
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?
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
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