In March, what started as
a negligible leak in a gas
pipe caused an explosion
that leveled two apartment buildings and killed eight people in New York City. Leaky pipes can pose a real danger, but there isn’t an oil, natural gas, or water network in the world that doesn’t have them.
“No matter what type of pipe system you have, leaks go undetected for a long time,” says Kamal Youcef-Toumi, a mechanical engineer at MIT. Existing acoustic sensors aim to detect leaks from above- ground, but to catch smaller leaks sooner, Youcef-Toumi’s team is designing an auto- nomous robot to patrol pipes from within. The two-liter- bottle-size prototype cruises through pipes at up to 3 miles per hour in search of subtle pressure differences that indi- cate a loss of fluids. Then the pipe-bot sends an alert with GPS coordinates to a techni- cian who can locate and repair the leak. ALEXANDRA OSSOLA
a negligible leak in a gas
pipe caused an explosion
that leveled two apartment buildings and killed eight people in New York City. Leaky pipes can pose a real danger, but there isn’t an oil, natural gas, or water network in the world that doesn’t have them.
“No matter what type of pipe system you have, leaks go undetected for a long time,” says Kamal Youcef-Toumi, a mechanical engineer at MIT. Existing acoustic sensors aim to detect leaks from above- ground, but to catch smaller leaks sooner, Youcef-Toumi’s team is designing an auto- nomous robot to patrol pipes from within. The two-liter- bottle-size prototype cruises through pipes at up to 3 miles per hour in search of subtle pressure differences that indi- cate a loss of fluids. Then the pipe-bot sends an alert with GPS coordinates to a techni- cian who can locate and repair the leak. ALEXANDRA OSSOLA
THE PARTS
A
A polyurethane membrane detects pressure changes and protects the drum.
B
A 3-D–printed plastic drum moves in re- sponse to flow differ- ences from a leak.
C
Force sensors record how much the drum moves to gauge the size of a leak.
D
An onboard computer drives the bot and communicates wire- lessly with operators.
E
Rubber-coated wheels provide traction within most pipes.
