The Currant Creek project is a grassroots 525-megawatt natural gas-fired power plant consisting of a 2 x 1 combined cycle power block. The plant was constructed in two phases: Phase 1 consisted of the installation of two GE 7FA combustion turbine generators to operate in simple cycle mode, and Phase II called for the installation of two heat recovery steam generators (HSRGs) and a steam turbine generator.
The two HRSGs constructed in Phase II were a 10-module tube bundle design. PCL’s work included installation of the Low Pressure (LP), Intermediate Pressure (IP), and High Pressure (HP) steam drums, boiler piping, soot blowers, platforms, grating, and associated equipment. To handle the lifting requirements during assembly and erection of the HRSG modules, the team utilized a 4600 Manitowoc ringer crane. This crane facilitated lifting and tailing the modules with a single crane, thus negating the need to find space for a second one. Leaving this crucial area open facilitated the balance of the construction. PCL’s work provided the plant owner with the generating capacity to supply the additional baseload electric demand beyond the peaking power available from the first phase of the Currant Creek project.