Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
National Exams — December 2018 — 16-Chem-A5 Chemical Plant Design and Economics. Three-hour, closed-book exam; one two-sided aid sheet and an approved Sharp/Casio calculator permitted. Six equally weighted (20-mark) questions are posed and the candidate answers any five; only the first five are marked. All six are answered below for completeness. Question 1 is a process-synthesis flowsheet (catalytic propane dehydrogenation), Question 2 is a numerical discounted-cash-flow (DCFROR) minimum-selling-price calculation, and Questions 3–6 are qualitative design/economics essays (pilot-plant investigation, technical design factors, economic design factors, and a solvent-emission abatement scheme).
Reference texts: M.S. Peters, K.D. Timmerhaus & R.E. West, Plant Design and Economics for Chemical Engineers (5th ed., McGraw-Hill) — the exam's named primary text (pilot plants Ch. 3, general design considerations and plant-location factors Ch. 2–3, interest/depreciation/profitability Ch. 7–10); R.K. Sinnott & G. Towler, Chemical Engineering Design (Coulson & Richardson vol. 6) — economic analysis, cash-flow/DCFROR and flowsheeting; R. Smith, Chemical Process Design and Integration (2nd ed., Wiley) — reaction–separation–recycle structure; supporting Canadian practice from CCOHS, provincial OH&S regulation and Environment and Climate Change Canada air-emission guidance.
