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VWN News: Taking the Edge Off a Pipe Bomb -- Literally
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 Taking the Edge Off a Pipe Bomb -- Literally

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Date posted: 17/08/2012

The US Department of Homeland Security (DHS) Science and Technology Directorate's (S&T) new low-cost device for dismantling dangerous pipe bombs may look like a tinkerer's project, but that's no accident. The Semi Autonomous Pipe Bomb End-cap Remover (SAPBER) is unassuming in appearance, but sophisticated enough to preserve the forensic evidence needed to track down the perpetrator.

"From ten paces away, you might mistake the contraption for a pressure washer," says S&T Program Manager Christine Lee. "But step closer and you'll find an ingenious device bristling with four video cameras, radios, a telescoping mast, cutting wheels, a twisting wrist, an electric motor, and a chain-driven gear, all powered by a pair of 12-volt batteries."

Thousands of pipe bombs are made each year, and thousands of pipe bomb threats are called into local police and FBI authorities across the country. Many are false alarms, but those that aren't can be deadly.

Dismantling a pipe bomb is tricky and serious business, and missteps during the dismantling process can produce catastrophic results. Law enforcement authorities ideally would like to preserve all evidence related to pipe bomb attacks, but the main focus of responders is the safety of the public and current pipe bomb render-safe techniques often limit the amount of evidence that can be collected. Not so with SAPBER (say-ber).

Pipe bombs can be constructed from many different pipe materials, and filled with many different explosive materials. Making it even more challenging, they can also be constructed with shrapnel on the outside. SAPBER is designed to carefully disassemble the pipe bomb without disturbing the deadly explosive materials inside. Once the pipe bomb is dismantled, the filler explosive materials can then be emptied, and both materials and the pipe itself can be preserved as evidence. The SAPBER system is able to use these special techniques on a wide variety of pipes including straight steel, galvanized steel, copper, and PVC plumbing plastic.

The prototype and its remote-control software were developed by RE2 Inc., of Pittsburgh, Pennsylvania. As an operator controls the device from a distance, SAPBER takes the pipe bomb from a bomb-disposal robot, disassembles it, empties the pipe, makes a video, and carefully preserves all of the evidence.

The 140-pound (64-kg) two-wheeler is small enough to squeeze into a current bomb-squad truck while sharing space with a bomb-disposal robot. Once off the truck, SAPBER is towed into place by hand or by the robot. On-scene, the robot lifts the pipe bomb and gently lays it onto SAPBER's transfer tray to be cleanly disassembled. When the pipe is opened, the material inside -- powder, detonator, shrapnel, and all -- fall into SAPBER's collection trough, to be studied later and used as evidence.

In May, SAPBER underwent trials conducted by the S&T Bomb Squad Test Bed at the Army's Fort Meade. During these trials, the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) fabricated "live" pipe bombs for the Baltimore County Police Department Bomb Squad to test in four different, operational scenarios and each operator had to control SAPBER remotely, using the tool's video feed. The SAPBER system has also been tested using "live" explosives and has gone through an extensive evaluation by several bomb squads including the Allegheny County and Fairfax County Bomb Squads.

"To keep it affordable (currently around $12,000) and easy to maintain, RE2 Inc. designed and built the device from proven commercial parts that are mass-produced and easily replaced," says Lee.

See the full Story via external site: www.sciencedaily.com



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