When you plug in a phone charger or flip on a smart lamp, the small UL logo on the cord becomes almost invisible. Yet this symbol represents one of the most pervasive but least understood safety systems in technology: Underwriters Laboratories, a global organization that has quietly shaped electrical standards for over a century. Its recent expansion into AI safety testing, combined with geopolitical challenges, makes UL’s role far more complex than a simple certification mark.
From fire safety to AI oversight: How UL evolved
UL began in 1894 as a response to a deadly fire caused by faulty electrical wiring in a New York factory. Insurance companies needed a way to prevent disasters as electricity surged into homes, leading to the creation of the first safety standards. Today, the organization—officially UL Solutions—employs 15,000 people worldwide who test, inspect, and certify billions of products annually. Its reach extends beyond traditional electronics into emerging technologies like artificial intelligence, where it recently introduced UL 3115, a framework designed to evaluate AI systems before and during deployment.
The shift reflects UL’s broader mission: adapting safety standards to keep pace with innovation. Jennifer Scanlon, UL’s President and CEO, emphasizes that the organization isn’t just about preventing explosions or fires—it’s about ensuring that new technologies like AI don’t introduce unforeseen risks. "We break things, we blow them up, we light them on fire," she says, describing a day in the life of UL’s labs. "If you walk into our testing facility in Northbrook, Illinois, or any of our global labs, you’ll see electrical panels charging devices, batteries discharging, and products pushed to their limits."
The science behind the explosions: What UL really tests
UL’s testing process often involves scenarios most consumers never consider. Take lithium-ion batteries, for example. A single battery the size of a thumb can rupture violently, sending shrapnel across a lab. Scanlon recalls witnessing a lithium-ion battery explode during a test, leaving a blast radius that required hours to clean up. "Watching that happen is terrifying," she says. "It’s a stark reminder of why these standards exist."
Some of UL’s most extreme tests push beyond traditional electronics. In one memorable experiment, UL stacked two million soda cans in a fire testing warehouse and dropped a lit match to observe the outcome. The result? Instead of collapsing as expected, the cans exploded, scattering debris across the facility for days. While the exact purpose of the test remains unclear, it underscores UL’s commitment to stress-testing products under real-world conditions.
Other tests are designed to simulate high-stakes environments. In hazardous location testing—conducted in facilities like UL’s Northbrook lab—engineers replicate conditions found in oil rigs or factories where combustible dust could ignite. The tests are meticulously controlled, but the stakes are high: a single spark in the wrong environment could cost lives. "My office is right above the lab," Scanlon admits. "Sometimes you feel a little shake, and you’re reminded of the lives at stake every time we test."
Navigating geopolitics and global supply chains
UL’s role isn’t confined to laboratories. The organization also operates in some of the world’s most complex markets, including China, where much of the world’s electronics are manufactured. This global footprint has led to unexpected challenges. During the tail end of the Biden administration, UL was selected to lead a new Cyber Safety program aimed at setting standards for connected devices, including Internet of Things (IoT) products. However, the program’s progress stalled when the Trump administration took office and raised concerns about Chinese companies, despite UL’s independent operations in the country.
The episode highlights a broader tension: UL’s global presence makes it a target in geopolitical disputes, even when its role is purely technical. Scanlon acknowledges the complexity, stating that UL’s labs in China are essential for testing products destined for global markets. "We work with regulators, manufacturers, and customers around the world to ensure safety isn’t compromised by politics," she explains. "Our job is to focus on the science, not the headlines."
The future of safety in an AI-driven world
As technology advances, UL is expanding its purview to include emerging risks. The introduction of UL 3115 marks a significant step toward standardizing the evaluation of AI systems, but it also raises questions: How do you safety-test an algorithm? Who defines what’s safe? UL’s approach involves creating structured frameworks that assess AI models before deployment and monitor them continuously. "AI systems aren’t static," Scanlon notes. "They learn, adapt, and evolve, which means our standards must evolve too."
For consumers, the UL logo remains a simple assurance—a promise that a product has undergone rigorous testing. But behind that mark lies a labyrinth of expertise, innovation, and adaptability. From exploding soda cans to AI safety frameworks, UL’s work is a reminder that even the most mundane symbols carry enormous responsibility. As technology continues to reshape the world, UL’s role will only grow more critical, ensuring that progress doesn’t come at the cost of safety.
The next time you see the UL logo, it’s worth remembering: there’s a lot more to it than meets the eye.
AI summary
Elektronik cihazlardaki UL logosu ne anlama geliyor? CEO Jennifer Scanlon’dan patlayan pillerden AI güvenliğine kadar UL’nin karmaşık test dünyasına dair detaylar.
