hiring of sewer suction cum jetting machine capacity 4000 litre including driver cum operator and 2no labour for maintenance of sewerage system for ward no 12s , 13sand 14s in tilak nagar constituency under ee ( west ) -i , hiring of chassis mounted diesel run vehicle mounted hydraulic operated high pressure jetting cum suction machine fitted with iso imorted . the all equipments on chassis not less than 09ton ( gvw ) 4000lts . international standerd pumps having 1500 liters suction capacity and 2500 ltr . capacity water jetting tank capacity , including driver cum operater and 2no labour with safety belt and other safety equipment ( geti , hammer , gum shoes , jacket , oil and soap ) as per safety operation and maintenance of machine maintenance sewerage system in narrow lanes 143 working days