ASME Section I Code Calculations for Boiler Tubes Quiz
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ASME Section I Code Calculations for Boiler Tubes Quiz

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Questions and Answers

Which section of the ASME Boiler and Pressure Vessel Code lists the materials approved for constructing boilers or pressure vessels?

  • Section II
  • Section III
  • Section IV
  • Section I (correct)

    • What does the material specification document state?

  • Both the manufacturing and heat treatments, and the chemical composition (correct)
  • The manufacturing and heat treatments
  • The chemical composition
  • The technical description of a group of materials

    • What are the primary mechanisms in boiler design?

  • Welding and corrosion
  • Stress analysis and metallurgy
  • Creep and fatigue
  • Reduction of metal strength at elevated temperatures (correct)

    • What do the tables in Section II of the ASME Boiler and Pressure Vessel Code determine?

    <p>The maximum allowable stress at the design temperature</p> Signup and view all the answers

    What must metal selection for boiler design account for?

    <p>Various failure mechanisms such as creep and fatigue</p> Signup and view all the answers

    What factors and coefficients do the design formulas in this chapter contain?

    <p>Factors and coefficients to account for various design considerations</p> Signup and view all the answers

    What can be calculated using the formulas in ASME BPVC Section 1, PG-27.2.1?

    <p>Both the minimum required wall thickness and the maximum allowable working pressure</p> Signup and view all the answers

    Which of the following is an example of efficiency in the context of materials fabrication?

    <p>The amount of material left in the ligaments between drilled holes</p> Signup and view all the answers

    What is the efficiency of seamless cylinders?

    <p>100%</p> Signup and view all the answers

    For longitudinal seam welds in vessels operating at high temperatures, what factor must be considered?

    <p>Strength reduction factor</p> Signup and view all the answers

    What does the ASTM/ASME specification number refer to?

    <p>The common material grouping (e.g., carbon steel, alloy steel, stainless steel)</p> Signup and view all the answers

    Which letters are used with carbon steel to indicate increasing tensile or yield strength, or an increase in carbon content?

    <p>A, B, C, and D</p> Signup and view all the answers

    Which letter indicates the type of product for ASTM grade designators for pipe, tube, and forging products?

    <p>P</p> Signup and view all the answers

    What does the letter F indicate in the context of pipe manufacturing?

    <p>Furnace butt welded pipe</p> Signup and view all the answers

    What does TH mean in ASTM grade designators for pipe, tube, and forging products?

    <p>Tube plus Grade 11 steel</p> Signup and view all the answers

    Study Notes

    ASME Boiler and Pressure Vessel Code

    • Section II lists the materials approved for constructing boilers or pressure vessels.
    • Material specification documents outline the requirements for material selection, including mechanical properties, chemical composition, and testing requirements.

    Boiler Design Mechanisms

    • Primary mechanisms in boiler design include the management of stress, strain, and corrosion.

    ASME BPVC Section 1

    • Tables in Section II of the ASME Boiler and Pressure Vessel Code determine the maximum allowable stress values for different materials at various temperatures.
    • Formulas in ASME BPVC Section 1, PG-27.2.1 can be used to calculate the maximum allowable working pressure, which depends on the vessel's dimensions, material, and desired safety factor.

    Material Selection and Fabrication

    • Metal selection for boiler design must account for factors such as corrosion resistance, high-temperature strength, and ductility.
    • The design formulas in this chapter contain factors and coefficients that account for variables such as temperature, pressure, and material properties.
    • An example of efficiency in the context of materials fabrication is the minimization of material waste and optimization of fabrication processes.

    Seamless Cylinders and Welds

    • The efficiency of seamless cylinders is typically higher than that of welded cylinders due to the lack of weld joints.
    • For longitudinal seam welds in vessels operating at high temperatures, the factor of thermal expansion must be considered to prevent cracking and failure.

    ASTM/ASME Specifications

    • The ASTM/ASME specification number refers to the unique identifier for a specific material grade, which outlines its mechanical and chemical properties.
    • The letters H, M, and L are used with carbon steel to indicate increasing tensile or yield strength, or an increase in carbon content.
    • The letter P in ASTM grade designators for pipe, tube, and forging products indicates the type of product.
    • The letter F in the context of pipe manufacturing indicates that the pipe is fabricated using a furnace process.
    • TH in ASTM grade designators for pipe, tube, and forging products indicates that the product is thermally treated.

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    Related Documents

    3A2E3 C2 Obj 1.pdf

    Description

    Test your knowledge on ASME Section I code calculations for boiler tubes. Calculate the minimum required wall thickness or maximum allowable working pressure based on tube material specifications.

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