Weekly Safety Tip #59 - Diesel Exhaust
Diesel engines power much of the equipment we use every day—from trucks and lifts to generators and heavy machinery. While we often talk about the risks of gasoline exhaust, it’s crucial not to overlook the dangers of diesel exhaust. Just because it’s common doesn’t mean it’s harmless. This week’s safety share focuses on understanding the health hazards of diesel emissions and what we can all do to reduce our exposure on the job.
What Is Diesel Exhaust?
Diesel exhaust is produced when diesel fuel is burned. It contains a harmful mix of substances, including:
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Carbon
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Carbon monoxide
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Carbon dioxide
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Nitrogen
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Nitrogen oxide
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Particulate matter (tiny toxic particles that can be inhaled)
These substances can pose a serious health risk, especially with regular or long-term exposure.
Health Risks of Diesel Exposure
Short-term exposure can cause:
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Coughing
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Eye, nose, and throat irritation
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Headaches
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Nausea
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Light-headedness
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Asthma attacks
When you are exposed to diesel exhaust over a long time period (i.e., weeks, months, or years), more serious health effects can occur.
Diesel exhaust is considered a cancer-causing agent: it increases your risk of lung cancer. An association has also been observed between exposure to diesel exhaust and bladder cancer. Some common ways a worker may be exposed to diesel exhaust are:
Common Sources of Exposure on the Job
You might be exposed to diesel exhaust when:
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Operating diesel-powered vehicles or equipment (e.g., trucks, lifts, telehandlers)
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Working in service garages or mechanic shops where engines are left running
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Standing near generators or idling trucks on the job site
How to Protect Yourself
Here are some key safety measures you can take to reduce exposure:
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Use electric or battery-powered tools when possible
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Avoid standing near running diesel engines, especially in enclosed or congested areas
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Turn off vehicles or equipment when not in use
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Use proper exhaust ventilation (e.g., tailpipe hoses) to vent fumes outdoors
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Increase fresh air flow by opening doors and windows or using exhaust fans
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Install or upgrade exhaust systems in indoor workspaces
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Never run diesel engines in enclosed spaces without proper controls
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Limit the number of diesel machines running at once
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Operators: Keep your cab doors closed while machinery is in use
Always Prioritize Ventilation
Whether you're in a shop, garage, or on-site, working in well-ventilated spaces is one of the most effective ways to reduce the risks of diesel exhaust.
Stay aware. Stay healthy. Stay safe.
Have a safe and productive week!