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2003 Course Piping Design & Engineering (Elective II)

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Total No. of Questions : 12] [Total No. of Pages : 3 [3864] - 339 P 1349 B.E. (Chemical Engineering) PIPING DESIGN & ENGINEERING (2003 Course) (Elective - II) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer three questions from Section I and three questions from Section II. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. 5) Use of electronic pocket calculator is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) b) Water at 20oC flows in a 80 mm pipe at Reynolds number 80000. The pipe is estimated to have an equivalent sand grain roughness of size 0.16 mm. Determine the head loss expected in 300 m length of the pipe. How much head loss would be expected if this pipe were smooth, kinematic viscosity of water at 20oC is 10 6 m2/s. [8] Define economic velocity? Explain briefly the considerations in economic velocity for following piping systems i) Hot liquid flow. ii) Slurry flow. [8] OR Q2) a) b) Q3) a) b) Explain in detail pipe line networks and their analysis for flow in branches. [8] Discuss the procedure in determining pipe diameter for specified height of pipe wall roughness and the discharge? [8] Explain the desirable properties of piping materials for low temperature and high temperature services? [8] Explain the various types of pipe fittings in detail? [10] OR P.T.O. Q4) a) b) Q5) a) b) List out the major standards providing engineering bodies in piping? Discuss the different sections of ASME B31 code for pressure piping? [10] Discuss the various types of gasket according to ASME B16.5 and B16.47 for flanges? [8] State and explain the factors to be considered in selecting valves? [8] Discuss the sizing methodologies for rupture disc? [8] OR Q6) a) b) Describe the construction and principle of operation for the following types of valve actuators : [8] i) Electric motor. ii) Pneumatic. iii) Hydraulic. iv) Solenoid. Explain the steps followed during sizing of control valve? [8] SECTION - II Q7) a) b) What is the nominal size of a portable compressor unit required for compressing 1,600,000 standard cubic ft of gas per 24 hours at a temperature of 85oF from 40 psig pressure to 600 psig pressure? The altitude above sea level is 2500 ft. The N value of gas is 1.28. The suction [8] temperature of stages other than the first stage is 130oF. Explain the correct piping arrangement with the help of submergence laws for centrifugal pump? [8] OR Q8) a) b) Discuss the steam pipe sizing criteria based on flow rate, velocity, steam pressure and pressure loss? [8] Explain the design principles and line sizing of pneumatic conveying systems? [8] Q9) a) What are factors considered when the designer is locating equipment in the plot plan? [8] b) Develop the piping system layout considerations for storage tanks and heat exchangers? [10] [3864] - 339 -2- OR Q10)a) b) Q11)a) b) From a properly made P & ID, piping engineer should obtain all essential details required for piping? Make a list of all such details which should be available from a properly prepared P & ID? [10] Explain the concept bill of material? [8] What are the most common insulation material classifications to the industrial and commercial piping industry? [8] Derive the expression for critical thickness of insulation? [8] OR Q12)Write short notes on a) Different types of two phase flow in piping. b) List of documents for preparation of layout for a process plant. c) High alloy steel & its usage in piping. d) Selection criteria for insulation in hot and cold piping. [3864] - 339 -3- [16]

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