Top 10 Keyhole Uses For Smart Construction

February 2014, Vol. 69 No. 2

9. Horizontal directional drilling through a keyhole
TT Technologies, Aurora, IL, has developed an ultra-compact horizontal directional drilling unit than can be launched and operated through a 24-inch diameter cored keyhole. Although slower than conventional drills, this method could have real application in congested urban centers where the new service can be installed from the main in the center of the street to the curb line without ripping up the road. At the curb, other devices can take over to reach the house. With the Grundopit-K’s automated drilling feature, the operator simply loads rods into the handling chamber, and at the press of a button, the rod is lowered and loaded into the drill head. The drill process can be done in an automatic mode for straight bores and can be switched to a manual mode when steering corrections are needed.

10. Pipeline integrity inspection
The Rock Solid Group, based in Australia, has recently developed a unique tool using Broadband Electro-Magnetic (BEM) sensors to assess the internal integrity and wall thickness of pipeline systems from the outside of the pipe. This device can be used in both the water and gas industry, and can be launched and operated through an 18-inch diameter cored keyhole.

With more than 15 years of failure-free performance, keyhole technology has earned its place in every utility’s toolbox.