JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD B.Tech III PIPELINE ENGINEERING Previous Question Paper (May - 2019 - R15)
Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B consists of 5 Units. Answer any one full question from each unit. Each question carries 10 marks and may have a, b, c as sub questions.
PART - A
Write the hydrological parameters impact on pipeline design.
Answer
Hydrological parameters such as water table depth, soil moisture content, and flood frequency influence pipeline design by dictating buoyancy control requirements, soil corrosivity, and the depth of burial necessary to prevent pipeline exposure due to erosion or scouring.
Listed fluid properties considered in pipeline design.
Answer
The key fluid properties considered in pipeline design include density, viscosity (dynamic and kinematic), compressibility (for gases), vapor pressure, specific gravity, and the chemical composition or corrosivity of the fluid.
Define flow efficiency.
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Classify flow regimes involved in transmission of fluid through pipeline.
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Write the concept of isothermal process.
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What is adiabatic process?
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Define laminar and turbulent flow.
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Classify pumps used in liquid and gas flow.
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What do you understand by the term Commissioning?
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Define the term pigging.
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UNIT I
What are the environmental parameters considered in pipeline design? How to determine demand and supply parameters?
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Illustrate pipeline route selection planning. Which type of surveys involve for pipeline route selection?
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Describe the steps involved in pipeline design.
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Write the preliminary route selection and key factors for route selection.
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UNIT II
How to calculate pressure drop in series and parallel for pipeline?
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What is pipeline velocity and erosional velocity? Write the steps to calculate optimum pressure drop for pipeline packing design.
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Write the procedure to determine gas leakage using pressure drop method.
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Describe the impact of different gas and pipeline parameters on the gas flow efficiency.
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UNIT III
What is gas compressor? Write the steady state flow energy equation for a compressor.
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Demonstrate gas compression process and write the equation for reversible adiabatic process.
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Explain single stage reciprocating air compressor with a typical indicator diagram when compressor operates on a two stroke cycle.
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Write the applications of gas compressors. Describe multistage compression process.
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UNIT IV
Demonstrate retrofitting for centrifugal pumps. Also write the design criteria for pump station piping.
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Describe the transient flow in liquid and gas pipelines.
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Explain the theoretical fundamentals and transient solution techniques.
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Write the expansion and flexibility equation for pipeline design. Also, write the selection parameters for mechanical design of pipeline.
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UNIT V
Explain cathodic protection process for land pipelines.
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How many types of corrosion involves in pipeline and how to protect pipeline from corrosion.
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How do pipeline operators know their pipelines are operating safely?
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How do pipeline operators know if a pipeline has a leak?
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