Revamp of existing refineries has its own challenges at each stage of the engineering cycle starting from conceptualisation to final erection or modification and commissioning of the revamped facilities. Once the licensor selection and ISBL configuration are frozen, the utilities-power and offsite infrastructure required to assist the production requirements needs an overhaul. The configuration of the OSBL facilities requires a brainstorming so as to assist the refiner to limit the project spending while meeting the production needs. The possibilities and means of conducting and carrying out the OSBL revamp are many and it is imperative that the right philosophy is adopted to yield the most cost effective yet most efficient OSBL design. A more efficient utility and overall OSBL facility is vital to the refinery economics and its importance can no less be undermined in the overall refinery revamp job.
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