V94.2 gas turbine training course

V94.2 gas turbine training course

General start-up conditions: When the gas turbine is restarted after a long period of downtime (for example, after overhaul of the unit or important repairs that caused a large interruption in the work of the unit, or when the unit was out of service for a long time due to lack of need), the checks and visits mentioned in The following should be done. If the stoppage of the unit is short-term, such as normal stops on the weekend or short stops due to minor repairs, it is not necessary to do the things mentioned below (in order to prepare the unit).

MBV lubricating oil system

• Check the cleanliness of the STRAINER in the return path of the lubricating oil located in the lubricating oil tank Note: It is necessary to open the MANHOLE on the tank to perform this visit • In case of replacing the lubricating oil, the amount and quality of the oil should be checked according to the relevant specifications. • Visual inspection of flanges and pipe connections to ensure proper installation and no leaks • Performance check of lubrication oil pumps, this visit is done for the presence of vibrations and abnormal sounds and the power consumption of the pumps. The pressure in the lubricating oil tank when an oil vapor exhaust fan is on should be between 20 and 40 mmHg (this part can be implemented using a U-TUPE type pressure gauge) • Make sure that the isolation valves in front of the instruments are open. It is also necessary that the isolation valves related to the testing and inspection of the instruments are closed (this case applies to the isolation valves of all switches and pressure transmitters.) • Tightening test connections and related caps

MBL-AIRINTAKE system

• If the parts of the filter have been changed, it should be ensured that they are correctly positioned. The IMPLISION doors in the filter chamber chamber should be checked for freedom of movement and complete sealing. AIR INTAKE access doors must be leak proof and lockable. • Damaged corrosion color and the presence of corrosion in the clean part of the filter housing and in the inlet metal channel and in the areas before the compressor are not acceptable under any circumstances. Therefore, the entire AIR INTAKE area must be carefully cleaned before starting • Visiting the compressor damper to ensure correct operation

MBX hydraulic oil system

• Checking accumulators in terms of charged pressure • Check the cleanliness of the filters • Performance testing of hydraulic oil pumps. This visit is done to check unusual vibrations and noises and power consumption • Necessary checks should be done before the pressure gauges to ensure that the isolating valves are open.

MBA BLOW OFF system

• Check water accumulation in the BLOW OFF tank • Checking the opening and closing of pneumatically controlled blow-off valves, during this check, the time of opening or closing should be measured and recorded (it should be noted that the check of the operation of these valves when the unit is stopped must be done using an auxiliary compressor which is temporarily connected to the connections of the BLOW OFF valves • Limit switch status signal Explanation: For this check