12 Questions
What is the first step to start the plant operation?
Select the Manual mode for the respective compressor
How is the 'Ready to Start' indication lamp verified before starting the compressor?
By ensuring necessary cooling water flow
What type of logic is considered for ESD interlocks in critical loops?
2oo3
How does the operator load/unload the compressor in Manual mode?
By pressing Load/Unload push buttons on LCP
What action follows after satisfying all the interlocks before starting the compressor?
Initiating 'Ready to Start' signal to LCP
Which push buttons are used by the operator to load/unload the compressor in Manual mode?
(Field) Load / Unload push buttons
What initiates the Loading / Unloading of the compressor in Auto Mode?
MEG Outlet Temperature
What is the consequence if the Actual Differential Oil Pressure falls below 1.5 Kg/cm2g?
ESD tripping of the system
How does the system ensure that the lube oil pump starts before the compressor in Manual mode?
Operator's manual action
Which parameter interlocks the secondary seal cooling pump to prevent its start?
Discharge pressure + Differential Oil Pressure
What prohibits the compressor from starting between two successive startups?
Startup timer
When should the standby lube oil pump be started manually?
In case of Actual Differential Oil Pressure below 2.0 Kg/cm2g
Test your knowledge on operating a plant in both Auto and Manual modes. Learn about selecting the manual mode for compressors, starting pumps for refrigeration package operation, and ensuring proper cooling water levels.
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