In November 2020, Underwater Construction Corporation (UCC) was contracted by a hydroelectric utility to conduct repairs to a dam’s stilling basin. Previous inspections had identified areas of spalling and exposed concrete reinforcement. Additionally, a section of baffle blocks had become dislodged and swept downstream during a high-water event. To [...]
UCC performed an inspection on the raw water intake structures of a power generation facility. Findings revealed that 75% of the structure cap and support members underneath the cap had collapsed over the winter. While final repair drawings were being developed UCC performed emergent repairs starting with the removal of [...]
Preservation of Aquatic Life Installation of a fish barrier net for a large hydroelectric facility in the midwest to restrict the aquatic life from entering the generating turbines of the facility. UCC has installed and maintained the deepest and longest barrier nets in the country. Impingement & Entrainment Sevices (In [...]
In the spring of 2013 Underwater Construction Corporation (UCC) worked with a Midwest nuclear station to develop a repair plan for the sites raw water intake structure. In July 2013 the formal award was given whereby the mobilization of UCC’s crew and work vessel the “Salvor” began. The intake crib [...]
UCC divers were utilized to place bagged sand/cement under and around an exposed 24 inch concrete coated steel pipeline then covering the area with 12 inch crushed rock to within less than 2 feet of the original sea bed elevation. UCC provided large marine equipment including a barge with a [...]
An underwater inspection was performed determining that a sill plate was deteriorated beyond repair and then confirmed by engineering review. Using hydraulic underwater cutting equipment the old sill plate and concrete was carefully removed. Concrete forms were fabricated and installed underwater allowing UCC to place new concrete. Installation consisted of [...]
Underwater inspections determined that 19 of 24 spillway block sections were subjected to years of erosion. UCC provided skilled divers and specialized underwater tooling to remove the damaged concrete. The substandard rebar was removed using an exothermic cutting torch and new rebar matting was installed as required by engineering specification. [...]
