MHI Uses Senior Flexonics Pathway Crossovers


For Japanese Domestic Power Applications


The volcanic activity in the Japanese islands provides a ready source of thermal energy. Mitsubishi Heavy Industries (MH 1), Japan, has the technology to tap into those geothermal resources to produce electric power. The heart of an MHI geothermal power plant is the turbine and the large duct carrying the exhaust steam to the condenser.

Senior Flexonics Pathway has unique expertise in the design and construction of large diameter expansion joints for critical applications such as steam turbine exhaust. Even though Senior Flexonics Pathway’s strength in this area is well known, it was not customary for turbine crossover expansion joints to be furnished by a foreign vendor. Senior Flexonics Pathway was selected to make the crossovers for the two installations below only after extensive documentation of prior experience.

The resulting expansion joints are pressure balanced universal construction designed to operate at full vacuum while absorbing small movements of the ducting and condenser without harming the turbine. These expansion joints rest on top of the MHI turbines. Each unit must be lifted off the turbine frame for major maintenance to the turbine. Senior Flexonics Pathway provides a unique lock out device that can be used to lock and

Xontact Senior Flexonics Pathway.