DRAWING/DOCUMENT STATUS A FOR REFERENCE 2006-04-10 First issue Steenmeyer DATE DESCRIPTION Bearb Coord Rev Liedtke Sudhoff Geprüft Checked APPD PROJECT : CAMAU 750MW COMBINED CYCLE POWER PLANT OWNER : OWNER’S ENGINEER : PETRO VIETNAM CPMB CONTRACTOR : CONTRACTOR’S ENGINEER : LILAMA CORPORATION FICHTNER SUBCONTRACTOR’S NAME : SUBCONTRACTOR’S SUPPLIER : s DELMAS POWER GENERATION DRAWING TITLE : System Description Lube and Jacking Oil System PKZ UAS Contents Code Ursprung/Original Reg No UNID Urspr.-PKZ-Nr Orig.-PC Ursprung-Nr./Original-No Projekt/Project gezeich Drawn bearb Coord geprüft Checked Abtlg Dept PKZ/PC Datum Date Name 06-04-10 STEENM 06-04-10 LIEDTKE 06-04-10 SUDHOFF P415 sgd s AG POWER GENERATION CA MAU CCPP VIT154 Maßstab Scale UA/DCC Type Inhaltskennzeichen Contents Code N/A A4 Benennung/Title System Description Lube and Jacking Oil System Dienstst./Dept P415 UNID 423216927 XS00 MBV Zähl.-Nr Reg.-No Index/Rev 355022 Version A Blatt-Nr./Page-No CM1-L1-M-MBV.08-355022 Erstellt mit/designed with of Ersatz für Supersedes Gas Turbine Description of Auxiliary Systems Lubricant Supply Lube and Jacking Oil System Refer also to: List of Control Settings (SREL) List of Measuring Instruments List of Electrical Loads Equipment List P+I Diagram, Lube and Jacking Oil and is shut down An interlock prevents restarting the gas turbine in such cases 3.1-0210 3.1-0220 3.1-0230 3.1-0240 3.1-8010 An oil vapor extractor is mounted on the lube oil tank It extracts oil vapor from the tank, at the same time producing a slightly subatmospheric pressure in the tank and the return lines of the entire lube oil system As the return lines are not completely filled, a subatmospheric pressure prevails in the entire return piping system as well as in the bearing housings of the GT and generator This subatmospheric pressure prevents the escape of oil vapor or oil from shaft penetrations and other seals It also promotes degassing of the oil in the lube oil tank Extraction is redundant and employs the two side channel compressors MBV50AN001 and MBV50AN002 If the online fan sustains an outage, a fault alarm is issued and the standby fan started up Oil vapor is fed first to oil separator MBV50AT001 to prevent the escape of any oil to the surroundings Swing check valves MBV50AA201 and MBV50AA202 prevent circulation and the ingress of ambient air into the system when the respective fan is not running Pressure transducer MBV50CP101 monitors the subatmospheric pressure in the lube oil tank and this pressure is indicated locally on pressure gauge MBV50CP501 To set the requisite subatmospheric pressure, a side stream flow of air can be admixed to the extracted flow via valve MBV50AA283 and filter MBV50AT002 Pressure is displayed locally by gauges MBV50CP502 and MBV50CP503 that indicate pressure upstream and downstream of the separator and by pressure gauge MBV50CP501 that indicates the tank pressure To set the requisite subatmospheric pressure, a side stream flow of air can be admixed to the extracted flow via valve MBV50AA283 and filter MBV50AT002 Settings, limits, and measuring ranges of the devices referred to here are given in the List of Measuring Instruments, Equipment List, and List of Control Settings (SREL) This description only gives guideline values Class: RESTRICTED The reproduction, transmission or use of this document or its content is not permitted without express written authority Offenders will be liable for damages All rights, including rights created by patent grant or registration of a utility model or design, are reserved Function The lube oil system supplies oil to the compressor bearing MBD12 and the turbine bearing MBD11 of the gas turbine, as well as to the generator bearings MKD11 and MKD12 In doing so, the lube oil supply system performs several tasks: on the one hand it forms an oil film in the bearings that separates the rotating shafts from the bearing shells and thus minimizes friction, on the other hand the flow of lube oil removes heat from the bearings In addition, any wear debris or solid contaminants contained in the oil are flushed out of the bearings and removed by filtration at another location in the lube oil system Oil Tank Oil tank MBV10BB001 functions both as a collecting and supply tank as well as a deaerator for the lube and jacking oil This tank is provided with a filler opening and drain valve MBV10AA401 The oil level can be read off at sight glass MBV10CL501 and is continuously monitored by level monitor MBV10CL001 In the event that the tank oil level declines below a certain limit (MBV10CL001S01 max) If the oil level continues to rise and level switch MBV10CL001-S04 signals level >>Max, trip is triggered and the startup interlock prevents the gas turbine from being restarted This level can only be reached if a leak in the lube oil cooler allows water to flow into the lube oil system If the oil level in the tank declines below the setpoint of level switch MBV10CL001S02