UCC is the premier global provider of underwater services to the commercial nuclear power industry.

We understand that licensees expect service providers to aid in achieving higher plant reliability, maintaining and improving plant safety, minimizing cost, and facilitating regulatory interaction. As the first commercial diving company to specialize in services to nuclear plants, UCC has set a standard for safety, reliability and cost-effectiveness which the industry has come to expect.

UCC maintains a quality assurance program that meets the requirements of 10 CFR 50 Appendix B, N-QA1, ANSI N45.2. UCC is a participating member of the Nuclear Industry Assessment Committee (NIAC) audit program, which is similar to the joint audit program operated by utilities through the Nuclear Procurement Issues Committee (NUPIC). We are also audited periodically by NUPIC. Safety-related programs for inspection and maintenance meet applicable industry codes and standards as set forth by ASME, ASTM, ANSI, and other industry organizations.

UCC provides a comprehensive selection of services including underwater inspection, maintenance, and remedial work for the reactor vessel, fuel pool, fuel transfer system, suppression pool, intake and discharge systems, pumps, traveling water screens, cooling towers, and storage tanks.

UCC offers state-of-the-art underwater stainless steel welding on reactor internals, underwater plasma arc cutting, fuel storage rack installation and removal, coating inspection and repair, and concrete repair.

Our secondary-side diving services include pier and pile restoration, maintenance, repair and replacement of traveling water screens, maintenance dredging of intakes and discharge systems, inspection services, mollusk remediation, contaminated water diving, underwater welding, and concrete repair.

UCC has the resources to manage turnkey maintenance projects, and the management depth that allows us to perform construction management when required.


UCC provides services to global customers with assets located on reservoirs, lakes, rivers, harbors and in coastal areas. Our focus has allowed us to develop the technical capabilities and resources necessary to effectively serve the needs of a very unique but diverse client base.

Our services range from rapid response, and emergent work, to large-scale multiyear service contracts. UCC has the capability to mobilize quickly for very specialized jobs and can maintain a sustained presence when necessary. UCC has worldwide offices and operations strategically located to serve our customers.

Underwater Construction Corporation is the largest diving contractor in the world specializing in underwater services to nuclear, fossil and water power generation facilities. Services include inspection, maintenance, repair and rehabilitation. We offer a comprehensive selection of underwater services to the water power industry. These services include inspection, maintenance and remedial work on the primary structure as well as inlet and outlet works. UCC provides state-of-the-art underwater welding, inspection, concrete repair and a variety of underwater mechanical services.

Turn-key Dive Services

From rapid response, emergent work, to large-scale and multi-year service contracts.

Leverage The UCC Advantage

From rapid response, emergent work, to large-scale, multi-year service contracts.

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