15 Questions
Which type of steel is SA-516 according to the text?
Carbon steel
What is the value of y for a carbon steel operating at 250°C?
0.4
What is the minimum required thickness of a superheater outlet header operating at 510°C with a MAWP of 17 MPa?
70.79 mm
What is the value of y for a ferritic alloy steel at 510°C?
0.5
What is the minimum required thickness for a seamless steel feedwater pipe of material SA-335-P1 operating at 510°C and a pressure of 5200 kPa?
70.79 mm
Which equation should be used to calculate the minimum required thickness of a boiler drum if the inside radius is given?
$t = PRSE-(l-y)P + c$
What is the maximum outside diameter of tubing that can be calculated using the equation in PG-27.2.1?
125 mm
What is the formula to find the maximum allowable working pressure (MAWP) if the outside diameter is given for piping?
$p = 2SE(t-C)D-2y(t-C)$
What is the efficiency of the ligaments between the tube holes in Example 3?
0.5
What is the material specification of the drum plate in Example 3?
SA-516-65
According to the ASME BPVC I PG-27.2.2, what equation is used to ensure that the minimum shell thickness has not been reached with corrosion?
t =.PD+C 2SE + 2yP
What values are substituted into the equation to calculate the thickness?
4.1, 5.2 MPa, 168.28 mm, 41.7 MPa, 0.5, 875.06, 88.6
What is the result of the thickness calculation?
9.88 mm
What must be considered when ordering a pipe in terms of thickness?
Manufacturer's tolerance
What is the purpose of monitoring corrosion and calculating the minimum shell thickness?
To ensure safe operation of the boiler
Test your knowledge on code calculations for ASME Section I Chapter
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