Steam Turbine Repair - Steamship Feedwater Governor Valve Overhaul
Steamship? Yes, that's right, there are still non-nuclear fired steam-powered turbine propulsion ships plying the ocean. We recently completed manufacturing an entirely new feedwater turbine as well as overhauling the turbine speed control governor. Field System Machining manufactures turbine parts from examplars as well as overhauls repairable steam turbine parts.
This is the 1 megawatt steam turbine upon arrival. The turbine shaft was beyond repair.
Here we see the major pitting on both the steam turbine wheel and the steam turbine airfoils. Turbine repair is one of Field System Machining's major core competencies.
It wasn't hard to get the two steam turbine wheels off the shaft--they were practically falling off the shaft. The 1965 steamship these wheels came out contains four 11 MW steam propulsion turbines each having two steam turbine driven feedwater pumps. Each turbine can run with only one of its two feedwater pumps so the propulsion turbine was still operable while we manufactured this new shaft, wheels and turbine airfoils.
The feedwater turbine speed trip governor, before we overhauled it.
Forty-five year old governor speed trip ready to go back into service. Steam Turbine Service is a key part of Field System Machining's turbine repair business.
Field System Machining manufactured the shaft, two wheels and installed the two new rows of turbine buckets. This ship is back on its way around the world with one of our turbines running the feedwater pump.