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The safety geeks who rescue us before disaster happens

If your Christmas tree doesn’t go up in flames, thank the scientists at Underwriters Laboratory.

By Jina MooreCorrespondent / December 17, 2008

Safety snoop: John Drengenberg and his Underwriters Laboratory colleagues go to extreme lengths to test consumer product safety.

Jasmine Scott/The Christian Science Monitor



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The best indication that John Drengenberg has been doing his job well, for 40 years, is that you’ve never heard of him.
Most of the things he makes his living worrying about have probably never bothered you, either. You’re not, in all likelihood, terrified of being killed by your TV. You’ve probably realized your child’s Easy Bake is unlikely to burn down your house, and you no doubt pour a cup of coffee without wondering whether the handle will fall off in your hands, spilling six cups of hot coffee all over your crème wool pants.

It is equally unlikely that these things, and thousands of other odd-ball possibilities, will happen, thanks in part to Mr. Drengenberg. He’s spent his career testing almost everything in the average home – from the shingles on the roof to the wiring in walls to the microwave in the kitchen – and making sure it won’t short circuit, blow up, or otherwise injure the American consumer. In what amounts to a chess of mortality, Drengenberg has spent his professional life imagining worst-case scenarios for almost every product on the market, and then trying to avoid them.

“We’ve done such a good job for 114 years, nobody cares. They say, ‘I bought it at Sears. It’s got to be safe. Somebody tested it,’” he says. “We’re the somebody.”

Drengenberg works at Underwriters Laboratories (UL), an independent nonprofit that sets the standards for product safety in America. Its 63 laboratories around the world test and approve almost everything sold in America – every hair dryer, iPod, or length of wiring with a UL seal – with a few exceptions: cars, cosmetics, and food, for example.

Headquartered in Chicago, UL roots here stretch back more than a century, when William Henry Merrill, an electrical engineer from Boston, went to inspect the Palace of Electricity that year at the World’s Fair, along the shores of Lake Michigan. No doubt with the memory of the city’s “great fire” of 1871 heavy on their minds, Chicago’s fire inspection board called Merrill and asked him to find ways of lessening fires that were starting with the new-fangled light bulb. At the palace, hundreds of naked light bulbs were strung on metal wire and nailed to posts with metal nails. “You as modern folk, you would never put a nail through a wire,” says Dengenberg. “But that was rocket science in those days. So fires did start, and the result was UL.”

Today’s UL looks nothing like it would have in Merrill’s day. For starters, even schoolchildren know something specialists then didn’t: Metal conducts electricity with dangerous ease, and rubber insulates it, keeping the current locked into the wires needed to carry it. More than that, though, the exponential growth of consumable goods necessitates more varied testing than 19th century retailers might have imagined. UL’s Chicago campus has a lab for testing washing machines and another for making rain to test outdoor lights. There’s a combustion lab to test ovens – on a recent day, they cooked 200 pizzas, nonstop over eight hours – and a strobe lab, where they test fire alarms for the hearing impaired.

“We’ve got a firing range. We’ve got Magnums, we’ve got rifles, we’ve got 30-calibers, we’ve got all kinds of these things,” Drengenberg adds – not because they test guns, but because they test bulletproof glass. There are atomic absorption spectrometers to test the lead in paint, and thermal gravimetric analysis machines to test the properties of plastic. You couldn’t try this stuff at home.

Every product they test is at the request, and the expense, of its manufacturer, who seeks out UL not because it has to – no federal law mandates safety tests for most items – but because it’s cheaper and easier than a product-injury lawsuit, Drengenberg says. In fact, most retailers won’t stock a product if it hasn’t been safety tested. But it’s all voluntary, a tidy case study of the free market at its best: bottom-line drivers of consumer good.