Clearing of ESP hopper chokes, conveying the ash manually from ESP hoppers to the buffer hoppers, clearing of jams in the ESP hopper lines of 200 NB by removing bellows and gaskets, clearing of jams in 300 NB ash conveying lines, clearing of ash heaps of 1st and 2nd row fields using wet ash system, emptying of hoppers by opening hopper manual inspection doors or side dummies and poking, clearing the ash below ESP hoppers with water after clearing chokes and arresting the ash conveying line leaks as and when required in Unit-3 and 4, Stage-II from the date of commencement of work to 31.03.2027.