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2003 Course Process Economics & Project Eng.

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Total No. of Questions : 12] [Total No. of Pages : 4 [3664] - 330 P 951 B.E. (Petrochemical Engg.) PROCESS ECONOMICS AND PROJECT ENGINEERING (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer 3 questions from Section I and 3 questions from Section II. 2) Answers to the two sections should be written in separate answer books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of logarithmic tables, Mollier charts, electronic pocket calculator and steam tables is allowed. SECTION - I Q1) Solve any four from the following : [18] a) What are the limitations of breakeven analysis? b) List down the various financial Institutions available in India to meet the requirements of industry for long-term finance. c) What is meant by capitalized cost? Where is it used? d) A storage tank was priced at Rs. 1,25,000 in 2007 when the cost index was 560. What is its value today when the cost index is 800? e) List the factors to be considered in the evaluation of capital requirements for a process plant. OR Q2) a) b) The annual production costs for a plant are Rs. 36.5 lakhs, while the sum of annual fixed charges; overhead charges and general expenses are Rs. 26 lakhs. Determine the break-even point, in units of production per year if the total annual sales are Rs. 72.8 lakhs and the product sells at Rs. 520 per unit. [9] A process plant has an initial investment of Rs. 50 lakhs. The estimated salvage value is Rs. 2 lakhs. It has a life of 8 years. Estimate the book value of the plant after 5 years by [9] i) Straight line depreciation method. ii) Declining balance method and iii) Sinking fund method with a sinking fund interest rate of 10%. P.T.O. Q3) a) b) A pump installation costing Rs. 95,000 has a salvage value of Rs. 5,000. It requires Rs. 3,000 for its annual maintenance. If the value of the money is 10% and the pump has a life of 3 years, what is the present worth of service rendered by the pump? What is the capitalized assuming perpetual operation. [8] Discuss in brief the various components of a balance sheet and Profit and loss account statements. State the economic ratios and their significance in brief. [8] OR Q4) An existing plant has been operating in such a way that a large amount of heat is being lost in waste gases. It has been proposed to save money by recovering heat now being lost. Four different heat exchangers have been designed to recover the heat and all prices. Saving has been calculated for each of the design is given in the following table. The plant manager wants at least 16% annual return on initial investment. Data : Item Design I Design II Design III Design IV Initial Installed cost (Rs.) 2,50,000 4,00,000 5,00,000 6,50,000 Operating cost (Rs.) 7,500 7,500 7,500 7,500 Fixed Charges, % of initial cost per year 10% 10% 10% 10% Value of heat saved Rs/year 1,00,000 1,40,000 1,60,000 2,00,000 Which one of the four designs should recommend to the plant manager? [16] Q5) Write short notes on : a) Taxes and Insurance. b) Annuity and perpetuity. c) Capital requirements for process plants. d) Break even analysis. [16] OR Q6) a) The following data are available for two reactors from a petrochemical plant : Item Reactor Reactor (Mild Steel) (Stainless Steel) Installed cost Rs. 5,00,000/Rs. 1,50,000/Salvage value 0 0 Service life 3 ? Interest rate (i) 12% 12% If the capitalized cost is same for both the reactors, estimate service life for stainless steel reactor. [8] [3664] - 330 -2- b) Discuss in brief breakdown of Fixed Capital Investment (FCI) items for a chemical process. [8] SECTION - II Q7) a) b) A company purchases a dilute mixture of ethanol (5%) in water, and processes it with simple distillation to recover the ethanol at a high concentration in which form it is then sold for industrial use. The distillation plant comprises : road tanker unloading bay, a raw material storage tank, with pumps, pipe work etc., a distillation column, with condenser, reflux tank for ethanol, pumps etc., a packaged boiler to provide heating to the distillation column reboiler via steam coils, storage tanks and pumps etc for the ethanol product, and road tanker load facilities. There has been an explosion of the distillation column, and after it is required you are asked to conduct an audit to determine whether it would be safe to restart operations. You realize that you must approach this task systematically, and prepare a list of the general types of topic, which you need, investigation as part of the audit. Then for each type of topic, you prepare a list of specific questions you will ask, and features you will inspect. i) List the types of topic you will investigate. ii) For each general type of topic, list several questions you will ask of features you will inspect. [12] Discuss the anatomy of Chemical Engineering Projects? What are the standard references / resources for chemical engineers working in Projects. [6] OR Q8) a) b) Make a Proforma for the specification Shell and tube heat exchanger. [9] Briefly discuss important utilities required in a typical petrochemical complex / refinery unit. [9] Q9) Discuss in brief the following safety terms : (Any Four) a) HAZOP. b) Fault tree analysis. c) Flammability. d) Trip and interlock system. e) HAZAN. OR Q10)a) b) [16] Discuss in brief Bar Chart, Milestone chart and Gantt Chart for Petrochemical Engineering project analysis. [7] Explain Plant shutdown and emergency procedure. [9] [3664] - 330 -3- Q11)Write short notes on [16] a) Engineering flow diagram and Piping and Instrumentation Diagram. b) Color coding for pipe line systems. c) Steam generation and distribution in CPI. OR Q12)Description of various activities is listed below to set up a refinery in one of the MIDC area near Mumbai. a) Decide the sequence of operations. b) Draw the network and determine the critical path. c) Calculate the earliest expected time and latest allowable time to complete the given refinery project. Data : Description of activity Time duration in weeks 1 Detailed Engineering layout 4 2 Basic process design 3 3 Inspection and Testing 10 4 Procurement of pressure vessels and equipment 20 5 Procurement of material related to pipeline and structure 12 6 Procurement of controls and electric goods 16 7 Civil and structural works 10 8 Welding 6 9 Dummy 0 10 Electrifications 3 11 Trials and Inspections 1 12 Inspections and Testing 10 [16] [3664] - 330 -4-

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