A History of Heavy-Duty Performance

SGT has over 25 years of industry-recognized experience in replacing heavy components. We’ve successfully completed steam generator (SG) or reactor vessel closure head (RVCH) replacements at nuclear power plants all over the United States and Canada. Using a process focused on continuously improving management techniques and project execution, we have repeatedly set world record outage duration benchmarks and domestic and international records for key schedule durations and safety performance.

SGRs necessitate a wide variety of approaches. SGT has experience with two-piece replacements in Westinghouse and CE units. This experience includes fit-up, welding and inspection of girth welds on thick-shell ASME components with the capability to provide a code-stamped vessel, as well as internal moisture separator component assembly and complete refurbishments of original steam drums. We also have experience with two-piece replacements that require confined space assembly of steam generator internals with stringent FME controls.

This broad range of implementation approaches, in combination with a comprehensive lessons-learned program, provides the SGT team with an extensive span of experiences to draw from in future projects.

 

SGT has established world-record outage duration benchmarks for all three PWR NSSS designs. We have successfully completed 26 SGR, nine RVCH replacements and one pressurizer replacement with two additional SGR under contract.