(GE-LSTG) Turbine Supervisory Instruments
Course Overview
This Learning-Doc describes
both the traditional and upgraded type systems. Each of the turbine
supervisory instruments are discussed; the key-phasor (or phase reference
generator), eccentricity detector, speed, valve position, shell expansion,
differential expansion, rotor expansion, thrust position, vibration, and
steam/metal thermocouples. Also described is the purpose of the
instrument, the interpretation of data, likely causes of operational problems
and how to use the instrumentation for troubleshooting and decision
making. All related alarms and alarm responses are included in this
discussion.