This article is an elaborated example of a schedule of system operaton – sso we did for one of our clients. Of course the actual documents contain all the operational and alarm parameters \u00a0<\/span><\/p>\n This Schedule of System Operation (SSO) covers the required technical data and operation logic regarding the components of Turbine Air Inlet Cooling system, according to the Smartlogic's requirements and the client\u00a0specifications<\/p>\n \u00a0:Turbine Air Inlet Cooling system contains two cold liquid circuits<\/p>\n Primary – 4 chillers and their respective primary pumps<\/p>\n Secondary – 2 pumps for each turbine inlet air cooling coil, 2 pumps for Cogen1, 2 pumps for Cogen2, and 2 pumps for the electric generator cooling (one operating and the other in standby<\/p>\n User Requirements Specification (URS<\/a>) for Monitoring and Alarm System<\/p>\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Operational Parameters List<\/p>\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Alarm Parameters List<\/p>\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 :Start Conditions of Chiller<\/span><\/p>\n COND_SYS_RDY<\/strong> Signal is on<\/strong> OIL_PUMP_OK<\/strong> Signal is on<\/strong><\/p>\n READY<\/strong> Signal from MCC (C-025\/RD) is on<\/strong><\/p>\n READY<\/strong> Signal from Chiller (JM-025\/RD) is on<\/strong><\/p>\n ZS<\/strong> (Freeze protector) Signal is off,<\/strong>\u00a0not indicating alarm<\/p>\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0: Running Logic for Chiller<\/span><\/p>\n Start corresponding Reg_valve<\/strong> (condenser regulate valve) on 100% and wait until valve feedback indicating >= 95%<\/p>\n Delay REG_VALVE_DLY_SP<\/strong>\u00a0–\u00a010 second<\/p>\n :If number of operating chillers <= 2<\/p>\n Send signal to \u00a0Start_cond_pump_1<\/strong>\u00a0–\u00a0Start one Condense Pump<\/p>\n :If number of operating chillers > 2<\/p>\n Send signal to \u00a0Start_cond_pump2<\/strong>\u00a0–\u00a0Start Two Condense Pumps<\/p>\n Verify from via communication that relevant cond_pump <\/strong>has<\/p>\n Delay 20 seconds<\/p>\n Perform PID on PDIT using Reg_valve<\/strong> according to relevant PDT-081-4_SP<\/strong> DeltaP SP Start CHW_Pump,\u00a0<\/strong>chilled water pump<\/p>\n Delay 30 second<\/p>\n Verify relevant FS (flow) Signal is on for 20 seconds<\/p>\n Start Chiller<\/strong><\/p>\n \u00a0 \u00a0 \u00a0 \u00a0\u00a0 \u00a0 : Stop operation for each Chiller<\/span><\/p>\n Delay 2 minutes ,\u00a0safety in case user changed the operation order of chillers from HMI<\/a><\/p>\n Stop Chiller<\/strong><\/p>\n Wait for signal off from motor MCC feedback<\/p>\n Delay 60 Sec<\/p>\n If current chiller is 3rd<\/sup> , Send signal to stop Cond_pump_2<\/p>\n If current chiller is 1st<\/sup> , Send signal to stop Cond_pump_1<\/p>\n Close Reg_valve,\u00a0<\/strong>condenser regulate valve<\/p>\n Delay 30 Sec<\/p>\n Stop CHW_Pump,\u00a0<\/strong>chilled water pump User can always choose primary\/secondary pump<\/p>\n If demand cooling for cogen1\/2 via .DI 20 for cogen 1, DI 21 for cogen 2<\/p>\n For first activation: <\/strong>Check TT-087 (supply water) is below SP +1<\/p>\n :Perform PID control with relevant Cogen-TT If PID control loop reaches >= START_HZ_SP<\/strong> activate secondary pump and Continue PID control loop with both primary and secondary pumps<\/p>\n If both primary and secondary pumps at work and PID control loop reaches <= STOP_HZ_SP<\/strong> deactivate secondary pump and Continue PID control loop with primary pump only<\/p>\n If outlet air from cogen 1 or 2 below setpoint -2\u00b0C and the pump speed in minimum for 3 minute, stop the cogen pump<\/p>\n When the outlet air is above set point +1\u00b0C for 1 minute start the pump<\/p>\n *Generator equipment is not connected to the our PLC<\/a><\/p>\n If number of operating chillers <= 2 then activate first pump<\/p>\n If number of operating chillers > 2 then activate second pump<\/p>\n Stop pumps using reverse order<\/p>\n \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 :Temperature control for generator valves<\/p>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Scope<\/h3>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 System General Description<\/h3>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Applicable Documents<\/h3>\n
Parameters List<\/h3>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Operation Logic<\/h3>\n
Relevant pumps are waiting for our commands, including their corresponding valves<\/p>\n
(in manual and\/or auto mode)<\/p>\n
Interlock<\/u><\/strong>: in any case, CHW_Pump<\/strong> will continue operating as long as the corresponding chiller is operating<\/p>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Consumers Pump activation<\/span><\/h4>\n
For Cogen-1 TE-315-022, for Cogen-2 TE-316-093
according to TT_315_022_SP \/ TT_316_093_SP using cogen-1\/2 primary pump<\/p>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0:Consumers Pumps activation for generator<\/span><\/h4>\n