Summary


Project Name : MANIFA PJ - TANAJIB SEAWATER TREATMENT PLANT EXPANSION PROJECT
Location : TANAJIB, SAUDI ARABIA
Client : JGC GULF INTERNATIONAL LTD / SAUDI ARAMCO
Construction Period : Phase I 24 MONTHS, Phase II 7 MONTHS

MAC was entrusted by JGC Gulf International Ltd, as its main sub-contractor, to execute the construction works for the Sea Water Treatment Plant Expansion at Saudi Aramco, Tanajib Facilities, involving multi-discipline tasks including civil, buildings, mechanical, piping, electrical, instrumentation, insulation and painting.


The Tanajib Water Treatment Facility was upgraded to increase its capacity in order to supply the water requirements to the new Manifa Central Processing Facilities (MCPF) 900MBCD.

  • The project involved over 2.6 million man-hours of direct labor and over 1.5 million man-hours of Indirect labor with a sustained peak load of direct manpower of 885 plus 225 indirect labor & supervision totaling 1,110 men. All personnel were accommodated and catered for in MACs camp adjacent to the job site where full life support facilities were provided
  • The achieved Quality Control Index was 98.69%
  • The Safety Record involved over 4 million worked man-hours without any Lost Time Incident. The achieved Project Safety Index was 97.25%.

The PROJECT consisted of Construction and Installation of the following:
  • Two new Electrical Substations and Utility Operation Buildings
  • New Sea Water Intake Basin, Pumps, Inlet Drum Screen, Collection Chamber with a 48 RTR interconnecting pipe line and four MOV tie-ins
  • New Electro-chlorination & Product Chlorination System
  • Twelve Pre-Treatment Filters and demolition of two existing roughing filters
  • Three Feedwater Surge Pumps
  • Coagulant, Sodium Bisulphite & Sulphuric Acid Systems including six pumps and three tanks
  • Four Cartridge Filters
  • Six SRO Pumps and eleven SRO Banks including demolition of existing SRO Banks & Pressured Vessels
  • New Degasifier Sump pit including installation of three new pumps
  • Product Water Shipping facility including installation of three pumps with underground 18 RTR pipeline routed towards Manifa CPF
  • Two new Hypochlorite Mix Tanks and ten new Hypochlorite Injection Pumps
  • New Caustic Tank and two new pumps
  • Instrument Air Compressor
  • Simulation of Logic Works: for proper logical control of field instruments synchronized with correct functionality of software via Honeywell DCS system & Windows Based Triconex ESD System at PMCC in PIB