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As fleet operators move toward cleaner and more cost-effective transportation fuel alternatives, propane autogas is a smart choice to replace gasoline and diesel. However, like any fuel source, safety remains a top concern. Let’s examine the safety aspects of propane autogas, comprehensively sharing why it stands out as a secure and reliable option and debunking myths.
Understanding Propane Autogas
Propane autogas, also known as liquefied petroleum gas (LPG), is a byproduct of natural gas processing and petroleum refining. It is stored under pressure as a liquid but turns into gas when released. This fuel is widely praised for its lower emissions compared to gasoline and diesel, improving air quality and making it an eco-friendly choice for vehicles of all types, from police cars to school buses.
Safety Features of Propane Autogas
Approved as a clean alternative fuel under the Clean Air Act of 1990, propane is non-toxic and does not contaminate soil or water because it turns into a vapor at atmospheric pressure. Propane has a narrow flammability range, meaning it requires a very specific concentration in air to ignite. This makes accidental ignition less likely compared to other fuels. “Propane is a safe fuel when it is used safely, just like any other fuel,” said Mike Walters, vice president of safety and fleet at Superior Energy Systems.
Advanced Storage and Handling Technologies
Propane autogas tanks are designed to be exceptionally robust, with multiple safety mechanisms that include overfill prevention devices, automatic shut-off valves and pressure relief valves to mitigate risks associated with high pressure. Propane tanks can last more than 30 years with proper preventative maintenance. These storage concerns are addressed in the National Fire Protection Association (NFPA) 58 code, which sets stringent standards for the safe installation, storage and handling of propane.
Fueling Safety
The fueling process for propane autogas is designed to be user-friendly and safe. Nozzle connections prevent leaks, and the process involves less exposure to fumes compared to gasoline or diesel. With the evolution of technology, modern low-emission positive locking dispensing nozzles have made the filling procedure quite similar to that of traditional petroleum vehicles. “The beauty of fueling with propane autogas is that it is no different than fueling with gasoline or diesel, but that doesn’t mean people using the fuel don’t need to be informed,” Walters said.
Propane autogas is stored as pressurized liquefied petroleum gas with system pressures typically ranging from 50 PSI to 200 PSI. These pressures are comparable to those commonly found in a common air compressor, making the system familiar and manageable for individuals who may already be used to handling other pressurized systems.
Safety Training
The propane industry follows stringent safety standards and provides extensive training for handlers and users. This ensures that everyone involved understands the correct procedures and the importance of maintaining safety protocols.
“Safety and training are not mutually exclusive,” Walters said. “Training is a subset of safety because safety is about the people — the decisions people make, the positions they put themselves in that lead to an accident or injury. Training is a method to help them to make better decisions.”
To mitigate safety concerns and cultivate a well-informed base of users, the Propane Education & Research Council (PERC) offers over 40 educational programs tailored to various aspects of propane autogas. These programs target both propane suppliers and system installers as well as end-users. Topics range from sales training and fleet benefits to dispensing and fueling, and vehicle servicing.
“Training is important so that equipment is installed and maintained properly, and users are aware of any safety requirements and precautions to take when using any energy source, including autogas,” said Eric Kuster, PERC’s senior vice president of safety, education, and compliance.
Debunking Common Myths
Despite its advantages, propane autogas is often misunderstood. Let’s dispel some common misconceptions:
- Myth: Propane autogas is more dangerous than gasoline. In reality, propane is less flammable and has a higher ignition temperature than gasoline, making it a safer option.
- Myth: Propane tanks are prone to explosions. Modern propane tanks are engineered with numerous safety features that significantly reduce the risk of explosions.
- Myth: Propane leaks are hard to detect. Propane autogas is odorized with a distinct smell (often likened to rotten eggs), making leaks easy to detect and address promptly.
- Myth: Service shops need costly upgrades for propane vehicles. The requirements for a service shop handling propane autogas vehicles are closely aligned with those for traditionally fueled vehicles.
From the robust construction of storage tanks to the specialized nozzles for dispensing and comprehensive user training, every aspect is designed to ensure maximum safety. As fleet operators navigate their options for cleaner energy, propane autogas stands out not just for its environmental and economic benefits but for its strong safety profile.
Propane suppliers and marketers can visit The Learning Center at Propane.com to access the educational courses that are offered specifically for propane autogas. End-users can search under fleet vehicles and school transportation on this page to learn more.
