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, Viton TM /Neoprene Goggles Face shield
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, Viton TM /Neoprene 10. Anyone that could potentially be exposed to benzene