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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?
What does the material specification document state?
What are the primary mechanisms in boiler design?
What do the tables in Section II of the ASME Boiler and Pressure Vessel Code determine?
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What must metal selection for boiler design account for?
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What factors and coefficients do the design formulas in this chapter contain?
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What can be calculated using the formulas in ASME BPVC Section 1, PG-27.2.1?
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Which of the following is an example of efficiency in the context of materials fabrication?
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What is the efficiency of seamless cylinders?
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For longitudinal seam welds in vessels operating at high temperatures, what factor must be considered?
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What does the ASTM/ASME specification number refer to?
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Which letters are used with carbon steel to indicate increasing tensile or yield strength, or an increase in carbon content?
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Which letter indicates the type of product for ASTM grade designators for pipe, tube, and forging products?
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What does the letter F indicate in the context of pipe manufacturing?
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What does TH mean in ASTM grade designators for pipe, tube, and forging products?
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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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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.