Exhaust Exposure
A key focus of firefighter health is often placed on fireground exposure, including smoke, toxic gases, and hazardous materials encountered during active incidents. While those risks are significant, exhaust exposure during fire truck idle time inside the station is a constant and continual daily risk to firefighter health.
Since 2012, the International Agency for Research on Cancer (IARC) has classified diesel exhaust as a known carcinogen, placing it in the same category as asbestos and tobacco smoke. Despite this, diesel exhaust exposure in the fire station remains a risk that often goes underestimated.
Solutions like Ward Diesel Filter Systems’ NO SMOKE and NO SMOKE 2 exhaust filtration systems are designed to address this problem at its source, capturing exhaust before it spreads into the station environment. Onboard filtration is becoming central to protecting crews and modernizing station design.
Where Firefighter Exhaust Exposure Actually Occurs
Diesel exhaust exposure in fire stations comes from routine, repeated actions including:
- Engine startup emissions before dispatch
- Fire apparatus idle emissions during daily checks and inspections
- Returning apparatus idling inside the bay
- Standby operations with engines running
Each of these actions contributes to harmful firefighter exhaust exposure, and the frequency with which they occur daily is what makes them dangerous.
Firefighters are often in close proximity to apparatus during these operations, and because stations typically share airspace between bays and living quarters, contaminants easily spread to food, PPE gear, and furniture.
Ward Diesel Filter Systems’ NO SMOKE line addresses this problem by capturing emissions immediately during idle and startup, preventing exhaust from ever entering the shared environment.
What is the Impact of Firetruck Idle Emissions on Firefighters?
Idle emissions are particularly problematic because they occur indoors, where they can build up. Unlike outdoor exposure, where exhaust can disperse, diesel exhaust in apparatus bays lingers. Even with ventilation systems in place, contaminants don’t simply disappear. Air movement often redistributes particles rather than eliminating them, allowing pollutants to travel beyond the bay and into adjacent spaces.
The NO SMOKE 2 system, designed specifically for 2007, 2010, and newer vehicles, addresses this challenge by automatically capturing emissions during idle cycles, providing a consistent method to reduce idle emissions in fire trucks without manual intervention.
Engine Startup is a Key Firefighter Exposure Point
Fire truck startup emissions are typically higher than emissions during steady operation. Cold starts produce a concentrated burst of diesel exhaust, regularly occurring inside the station, often just moments before departure. Cold engine starts occur numerous times throughout day and night shifts, causing increased levels of fire truck startup emissions to build up in the station, dramatically increasing cumulative diesel exhaust exposure levels.
Without immediate capture from the source, these toxic emissions spread quickly throughout the bay and station. Ward Diesel Filter Systems’ NO SMOKE engages at startup, capturing emissions instantly and preventing them from being inhaled or contaminating surfaces in the first place.
Apparatus Bay & Station Conditions to Consider
Fire stations are vulnerable environments when it comes to exhaust exposure because:
- Enclosed bays trap exhaust
- Shared airspace increases exposure risk
- Doors and airflow can spread contaminants further
While ventilation systems are often used, they are not always sufficient for fire station idle exhaust control. Ventilation may dilute air, but it does not eliminate the harmful exhaust contaminants. Eliminating diesel exhaust in apparatus bays requires direct capture, not just air movement. Without it, pollutants can circulate through the station, exposing personnel even when they are not near the apparatus.
Ward Diesel Filer Systems’ NO SMOKE takes a direct approach by capturing emissions at the point of release, installed directly on the apparatus, making it a more effective solution for fire station idle exhaust control.
How Does NO SMOKE Work?
Fire stations operate in fast-paced, unpredictable environments. A dependable exhaust filtration system solution must align with that reality and address unique factors including:
- There’s no time for manual system activation
- Multiple trucks may operate in rapid succession
- Idle periods are often short and unpredictable, but frequent
Because of this, firefighter exhaust exposure during apparatus idle is constant. Proper exhaust protection for firefighters must be automatic, immediate, and reliable. That’s where NO SMOKE and NO SMOKE 2 stand out. These systems are designed to function seamlessly within daily operations, engaging automatically when the vehicle is turned on and operating consistently without adding complexity to already demanding situations.
Is There a Cost Benefit to Exhaust Filtration Systems?
The cost of exhaust filtration systems and their impact on firefighter health are key factors fire departments must consider, especially as energy prices continue to rise. Traditional exhaust removal systems often depend on continuous ventilation, which can significantly increase utility usage costs.
Ward Diesel Filter Systems’ NO SMOKE approach is different. NO SMOKE activates only when apparatus are running and idling. Because NO SMOKE is installed directly in the apparatus, this targeted exhaust removal approach eliminates idle emissions in fire trucks without increasing overall energy demand. For fire departments looking to balance health protection with operational costs, NO SMOKE represents a more efficient path forward.
Fire apparatus idle emissions are a daily, consistent source of carcinogenic exposure inside fire stations, which can contribute to long-term health risks, including increased cancer rates among firefighters. Harmful exhaust exposure doesn’t just happen at an emergency scene, it happens in the station as well.
Ward Diesel Filter Systems’ NO SMOKE and NO SMOKE 2 systems are designed to stop diesel exhaust exposure at its source, capturing emissions during idle and startup before they can enter the air. Take the step to protect your crew’s health and contact us now!
