GTI is the industry’s source for the development, testing, and introduction of innovative keyhole technologies for utility system repairs and renovations. Excavation and restoration expenses cost U.S. natural gas companies more than $1 billion annually. GTI’s Keyhole Consortium—comprised of over 30 members from manufacturers and utilities—promotes the use of trenchless techniques that substantially decrease excavation and restoration costs while reducing public inconveniences and increasing safety. Some of GTI’s most significant keyhole developments include information on the establishment of keyhole standards, a keyhole pipeline inspection camera system, tooling database, and “how to” videos.
In 2007, the City of Toronto established the first comprehensive keyhole coring and reinstatement standard in North America, the result of keyhole activities by local utility Enbridge Gas Distribution, including several efforts with GTI.
In 2008, the Consortium’s activities included the creation of a technical reference guide to support the acceptance of coring and reinstatement procedures by local jurisdictions governing roadway repairs. Nicor Gas used this documentation, along with research analysis, to gain official approval for keyhole coring and reinstatement on state right-of-ways from the Illinois Department of Transportation (IDOT).
More recently, Maricopa Association of Governments (Phoenix and the surrounding area) implemented a keyhole coring and restoration construction standard.