1. Priming
LO pump
Action
Start
up
Main
LO pump
LO pressure
(MPaG)
The Woodward UG-10D governor is located on the turbine and the speed can be altered between
70%-105% of the rated speed with the control switch in the engine control room.
Speed Alternation
While operating the turbine, LO is supplied to the bearing metal, the reduction gear, etc via the
main LO pump.
Furthermore, in order to maintain safe operation, a priming LO pump driven by an independent
electric motor is employed. When the turbine starts up, it is designed not to start up until LO line
pressure rises between 0.04 to 0.06 MPaG even when the inlet steam valve is open. Also, when
the turbine stops, the priming LO pump remains in operation to keep the LO pressure between
0.04-0.06MPaG until the turbine stops completely.
Lubricating Oil System
Start up priming
LO pump
Open main steam
valve
Close main steam
valve
Normal operation
Shut down turbine
Switch off the
priming LO pump
Start
Start
Running
Stop
Stop
Stop
Stop
Down
Stop
Start
Nomal running
Stop
0.04~0.06
0.09~0.13
0.1~0.15
0.045
0.04~0.06
0
ＬＯ ＴＡＮＫ
ＬＯ ＣＯＯＬＥＲ
ＣＯＯＬＩＮＧ
ＷＡＴＥＲ
ＳＵＭＰ ＯＩＬ
ＳＴＥＡＭ
ＥＬＥＣＴＲＩＣ ＷＩＲＥ
ＯＵＴ ＯＦ ＳＵＰＰＬＹ
ＬＯ ＰＲＥＳＳ
ＤＵＰＬＥＸ ＬＯ
ＳＴＲＡＩＮＥＲ
LO TEMPERATURE
CONTROL VALVE
ＵＧ１０Ｄ
ＷＯＯＤＷＡＲＤ
ＧＯＶＥＲＮＯＲ
Ｍ
ＴＡＣＨＯＭ
ＴＲＡＮＳＭ
ＲＯＴＯＲ
ＳＯＬＥＮＯＩＤ
ＶＡＬＶＥ
ＧＯＶＥＲＮＯＲ ＆
ＥＭＥＲＧＥＮＣＹ
ＳＴＯＰ ＶＡＬＶＥ
ＴＯ ＮＯＺＺＬＥ
ＳＴＥＡＭ
ＩＮＬＥＴ
ＳＨＵＴ
ＯＰＥＮ
ＲＥＳＥＴ
ＫＮＯＢ
ＰＲ
ＬＯ
ＣＨＥＣＫ
ＶＡＬＶＥ
ＭＡ
ＩＮ
ＬＯ
ＰＵＭＰ
ＰＲＥＳＳ．
ＡＤＪＵＳＴ
ＩＮＧ
ＶＡＬＶＥ
ＣＨＥＣＫ
ＶＡＬＶＥ
ＰＲＥＳＳ．
ＡＤＪＵＳＴ
ＩＮＧ
ＶＡＬＶＥ
ＨＡＮＤ ＴＲＩＰ
ＫＮＯＢ
ＬＩＭＩＴ
ＳＷＩＴＣＨ
ＴＲＩＰ
ＳＥＲＶＯ−ＭＯＴＯＲ
ＯＶＥＲＳＰＥＥＤ
ＴＲＩＰ
ＯＩＬ ＪＥＴ ＦＯＲ
ＲＥＤＵＣＴＩＯＮ ＧＥＡＲＩＮＧ
ＲＥＤＵＣＴＩＯＮ ＧＥＡＲ
ＢＥＡＲＩＮＧＳ
ＯＩＬ ＪＥＴ ＦＯＲ ＬＯ ＰＵＭＰ
ＤＲＩＶＩＮＧ ＧＥＡＲＩＮＧ
ＯＩＬ ＪＥＴ ＦＯＲ ＧＯＶＥＲＮＯＲ
ＤＲＩＶＩＮＧ ＧＥＡＲＩＮＧ
ＴＵＲＢＩＮＥ ＲＯＴＯＲ
ＢＥＡＲＩＮＧＳ
