The object of this Contract is to Manage, Operate, Maintain, Repair and Replace as per Contract requirements and specifications all existing facilities and services belonging to Jahra Main Pumping Station area including and connected with all secondary lifting pumping stations and other not mentioned supplementary stations, screw conveyor station, odour control system, chemical injection systems, fresh water supply, drainage and ventilation Systems, all pressure and gravity lines network, manholes, transitions & valves chambers, mechanical and electrical equipment, A/C systems (chiller system, split unit, package unit), piping, instruments, diesel generators, DCS/PLC systems, civil structures including running, stand-by and new equipment's according to manufacturers' recommendation manuals within the wall boundary fence area (200mX200m). The extent of works shall include the operation controls of Jahra Station equipment in fully automatic continuous operation round the clock (24 hours) including holidays and shall be monitored from DCS. The extent of works shall include the Operation and Maintenance of Twin pressure underground pipelines (DI,1400mm, 16Km) from Jahra Pumping Station to Kubd WWTP including air release valves (5 Nos.), washout chambers (5 Nos.) and isolation valve chambers (2 Nos.). Overflow from Jahra Pumping Station 1600mm, HDPE, connected with overflow line of existing Jahra WTTP with 1200mm asbestos pipe line by-pass to the sea.