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Basic engineering, sometimes referred to as a front-end design, consists of developing a well-defined engineering package to improve upon the feasibility study results and the cost estimates developed during conceptual engineering. In some cases, the basic engineering deliverables can be compiled and used as a tender package for a detailed engineering design and construction contract (EC, EPC, or EPCM). All components of basic engineering may not be required for a BFS, however. Engineering deliverables for a BEP typically include:
- Design basis document developed to a greater level of detail than for conceptual engineering
- Detailed process description
- Process flow diagrams (PFD’s)
- Material balance
- Utility requirements (electric power, water, fuel, compressed air, etc.)
- Piping and instrumentation diagrams (P&ID's)
- Equipment list (priced), line list, & instrument list
- Equipment data sheets (preliminary)
- Site plans, including plan and elevation cuts
- Plot plan drawing
- Estimates of capital and operating costs
- Project implementation schedule
A BEP may also include piping studies to identify tie points, define conceptual routing of main distribution headers, define space requirements for the main pipe racks, and thus reinforce the viability of the general layout of the plant.
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