Procedure of restoring of power after black out on the vessel (example)

Vessel has 3 Main Diesel Generators; Power is supplied by one DG under normal operation at sea and in port. The other two DG is in place on 1st Standby and 2nd Standby accordingly. 

Power is restored after a blackout in the following process: 

AFTER A POWER BLACK OUT, EMERGENCY GENERATOR IN AUTO STAND BY STARTS UP AUTOMATICALLY AND POWER CAN BE BACK UP BY EMERGENCY GENERATOR IN LESS THAN 15 SECONDS. 

(E/G is started by battery power. If it not starts automatically, we have to manually start by switching to "MANUAL" mode position and Push Engine "START BUTTON" switch.) 

INTERCONNECTION BREAKER WITH "MSB" IS SWITCH-OFF AND THE E/G BREAKER IS SWITCH-ON AUTOMATICALLY. POWER IS NOW SUPPLIED FROM EG "ESB". 

WITHIN SECONDS FROM BLACK OUT TiME, AFTER EMC'Y GEN. STARTED AND POWER IS SUPPLIED FROM E/G "ESB", THE 1ST STANDBY MAIN DG STARTS UP AUTOMATICALLY AND GET ON LOAD. 

IF THE 1ST STANDBY MAIN DG FAILS TO START AUTOMATICALLY THE 2ND STANDBY MAIN D/G STARTS UP AND TAKE ON LOAD AUTOMATICALLY. 

If both the standby Main Diesel Generator fails to start automatically, we have to start at engine side and take it on load manually. Check that the reserve main air bottle no.2 must always be full. (Proceed to manual starting as per Starting Sequence as posted).

WHEN THE MAIN DIESEL GENERATOR GET ON LOAD, THE EMERGENCY GENERATOR BREAKER TRIPS, INTERCONNECTION BREAKER "SWITCH-ON" AND "ESB" HAVING POWER FROM "MSB". 

MAIN POWER IS NOW RESTORED. AS POWER IS RESTORED ALL AUXILIARY MACHINERY/PUMPS RUNNING IN OPERATION BEFORE THE BLACK OUT STARTS UP AUTO-SEQUENCIALLY ACCORDING TO PRIORITY SETTING INTERVAL IN SECONDS. 

STOP EMERGENCY GENERATOR MANUALLY AND RESET TO AUTO-STANDBY. 

CHECK THE CAUSE OF THE POWER BLACKOUT AND RECTIFY. 

OPERATE OR PUT TO STANDBY THE OTHER MAIN D/G AS REQUIRED.