safety relief valve (SRV)
stress corrosion cracking
scheduled downtime
system head
stator
surge
switch gear
shaft
shaft seal
small bore piping
seal
steam turbine
steam turbine governor
steam turbine seal
suction (compressor)
suction nozzle
skid
shutdown
speed
scheduled maintenance
system curve
solenoid
synchronous speed
synchronous motor
split line
steady-state condition