Safety Instrumented System

EEC was contracted to prepare a detailed engineering design package for the installation of a Safety Instrumented System on a motor fuels unit within an oil refinery.
EEC was required to prepare the installation plan of the Safety Instrumented System in accordance with client requirements, Federal, State and Industry standards and regulations.
The installation plan was to be prepared in sufficient detail to allow for budgeting and construction over a two year period. In addition, final piping tie-ins and commissioning activities were to be completed during a previously planned unit outage.
EEC was not only responsible for the Instrumentation design and implementation, but also the associated process piping design to support shutdown stations, fuel gas and natural gas headers, instrument air tie-ins, and new monitor points. The engineering design elements of the project included the design of a new equipment shelter and foundation to house the automated computer control equipment, new and updated process piping, orifice plate calculations, redundant power sources, new and updated instrumentation, conduit/cable tray routing and interconnections with the existing control system.
Construction field support was also provided as required along with start-up assistance. The client has since contracted with EEC to provide services for multiple Safety Instrumented Systems in additional units (Crudes, Hydrogens, FCCs, HDHs, Vacuums, SRU/SCOT, CCRs, NPTs, Distillates and Reformers). The largest system involved the design of 4 fuel gas and 4 natural gas shutdown stations, 6 control valves, ~89 process piping tie-in points, 144 pilot igniters/detectors, 62 Instruments, 4 control stations, cable tray, conduit and various other support functions.