Consultancy Services for Oil Water Separator Design at Karachi Aviation

Pakistan State Oil Company Limited (PSO) Karachi is procuring consultancy services for the design and assessment of an Oil Water Separator (OWS) at Karachi Aviation. This tender invites qualified consultants to conduct a comprehensive site survey, design, and prepare detailed engineering documents for the OWS system in accordance with API 421 standards. The scope includes site visits to evaluate existing drainage and wastewater conditions, followed by detailed design calculations covering flow rates, oil concentration, hydraulic retention, and sizing of the separator. The consultant will select the appropriate OWS type, prepare mechanical and civil engineering drawings, and develop a detailed Bill of Quantities (BOQ) covering civil works, mechanical equipment, instrumentation, and associated systems. The consultancy also requires preparation of process flow diagrams, piping and instrumentation diagrams, and cost estimates for capital and operational expenditures. Eligible bidders should possess relevant PEC categories for consultancy services, be registered with FBR and ATL, and demonstrate prior experience in similar environmental and industrial projects. The tender is issued by Pakistan State Oil Company Limited based in Karachi, Sindh. The tender was published on 29th April 2026, with a submission deadline on 14th May 2026. Interested bidders must submit their technical and financial bids by the closing date. The submission should include Earnest Money and CDR as per the instructions. The bids must be delivered to the PSO office in Karachi. A practical tip for bidders is to ensure thorough site assessment and compliance with API 421 standards in their technical proposal. Providing detailed and clear design documentation along with accurate cost estimates will enhance the chances of success. Early preparation of airport entry passes and relevant certifications for inspectors is also advised to avoid delays during consultancy execution.