Which of the following vessels would be the most appropriate choice for storing volatile substances under high pressure?
a. Spherical
b. Bullet
c. Atmospheric
d. Hemispheroid
a. Correct. Spherical vessels are often used to store volatile substances or materials pressurized at 15 pounds per square inch (psi) or above
b. Incorrect. Bullet vessels (bullets) are horizontal, cylindrically shaped vessels used to store contents at moderate to high pressures.
c. Incorrect. Atmospheric storage tanks are not appropriate for substances that contain toxic vapors or high vapor pressure.
d. Incorrect. Hemispheroids are pressurized vessels used to store material with a vapor pressure slightly greater than atmospheric pressure (0.5 psi to 15 psi).
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