During the winter of 2012 UCC Midwest Division was contracted to perform a deep water diving inspection for a hydroelectric facility in the Northern Midwest. One of UCC’s double lock chambers and deep water diving oversight was provided onsite to increase the safety of the dive. Multiple dives were required [...]
Underwater Coating Application to Seal Cracks (Nuclear Power Project – applicable to any industry with concrete infrastructure) The concrete roof slabs of SSW Basins A and B demonstrated full thickness cracking of the concrete slab covering a large portion of each basin. The roof slab extends below the water line [...]
Nuclear Storage Basin – Radioactive Sludge and Debris Removal Underwater removal & packaging of highly radioactive material (DOE Decommissioning Project – applicable to both government and commercial nuclear facilities) Over 300 dives were performed with no skin contaminations. Radiological conditions were extreme with contact dose rates in the sludge ranging from [...]
Reactor Internal– Various failures and Modifications Underwater Welding and Cutting on Safety related Stainless Steel Components (Nuclear Power Project) UCC completed their first Steam Dryer repair in 1983. Since then UCC has made various repairs or modifications to BWR Steam Dryer. To date, UCC has performed more than 30 different projects [...]
Standby Service Water Basins – Protective Coating failure Underwater Coating Application to evaluate corrosion and repair coating defects on carbon Steel (Nuclear Power Project – applicable to any industry with coated carbon steel in immersion service) Underwater coating repair in commercial nuclear plants is an accepted maintenance approach. Some of the [...]
Standby Service Water Basins – Protective Coating failure Underwater Coating Application to repair coating defects on carbon steel pipe (Nuclear Power Project – applicable to any industry with coated carbon steel in immersion service) Coated carbon steel pipe in two concrete emergency cooling water basins demonstrated extensive coating failure and corrosion [...]
Clay Lined Water Reservoir Grout Injection to Seal Large Fissures (Water Power Project – applicable to any industry with water retaining structure) The clay liner of an 842 acre reservoir supporting a 1872 megawatt pump storage facility developed large trench-like features. Reservoir depth ranged from 40 feet to 110 feet. Before [...]
Concrete gravity Dam Underwater Concrete Placement (Water Power Project – applicable to any industry with concrete water retaining structure) A concrete gravity dam with an earth core and rock/soil foundation was completed in 1944. The dam is 8,422 feet long, 206 feet high with a 130 foot head. Maximum storage is [...]
In the summer of 2011 the UCC Midwest Division completed a turnkey project for a hydroelectric facility in Wisconsin. The project work scope included the removal and replacement of the facility’s existing log boom and fish barrier net and installing a new 280 foot system designed to incorporate the barrier [...]
Used on a variety of projects to increase stay times and enhance safety (Applicable to all industries) The plan called for divers to work at a depth of 90 feet. Diving work at this depth can be conducted safely using surface supplied air, but time on the bottom is limited. [...]
