AL Oil Gas Fields Practice Questions - Alabama Oil And Gas Fields Contractor Examination Exam

What is the typical purpose of an annular bottom plate ring on a large API 650 tank?

To provide a thicker, tougher plate ring under the shell where shell-to-bottom stresses are highest To act as a permanent scaffold for painters To replace the need for a foundation To vent vapor from the roof

Correct Answer:

To provide a thicker, tougher plate ring under the shell where shell-to-bottom stresses are highest

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