Project :
Hibernia Gravity Base Structure (GBS) Mechanical Outfitting
Client: Peter Kiewit Sons’ Inc. (PKS)
Owner: Hibernia Management and Development Company
The Hibernia Project at Bull Arm, Newfoundland and Labrador was North America's largest construction project for most of the early 1990s. GJ Cahill, along with its venture partner, served as the prime electrical contractor for the construction of the Hibernia Gravity Base Structure (GBS), a large concrete caisson that supports the massive drilling / production facility and accommodations deck. The GBS includes a multilevel utility shaft containing numerous large electrically driven seawater and crude loading pumps and a Local Electrical Room (LER) containing the motor control centers for the pumps. Work was often performed in confined spaces as cables had to be installed in a 100-metre shaft. Part of the contract included fabrication and assembly of the electrical and instrumentation, telecommunication, and fire and gas system for the utility shaft modules. These modules were assembled in Dartmouth, Nova Scotia and transported to Bull Arm for placement and hookup. Final hookup included mechanical completion and commissioning preservation.
GJ Cahill was also solely responsible for providing power to the pier area for construction and commissioning of the topsides modules and the installation of fibre optics, lighting and instrumentation.