API 653 practice test

API 653 · Question 1 of 2557:21
I. Calculations and tabular evaluations for thickness measurements, weld sizes and tank integrity

Invented practice tank T-4 has a 120 ft diameter. An external settlement survey will use equally spaced points no farther apart than 32 ft around the shell circumference. What is the least number of points that meets that spacing?

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Every question is original and written to American Petroleum Institute's published content outline, and every explanation cites the code section or source it relies on.