During the engineering phase of capital projects, difficult budgetary and
scheduling constraints can result in less than optimal control equipment
selections. In critical valve applications, under-performing equipment
can lead to serious inefficiencies in plant operation, increased costs and
Effective process control optimization requires an understanding of all
components in the loop – measurement, controller and final control
Instability in fuel gas pressure
supply to a co-gen gas turbine
resulted in errati c turbine
speed, power output decline
and inefficient plant operati on.
analyzed the live system and
determined the root cause.
Recommendations were made
for control valve modifications
that allowed a swift return to
stable fuel supply pressure and
efficient turbine operation.