Question

What should be the approximate thickness of a wall for better performance if the corrosion rate of that wall is estimated as 1/8 inches in 1 year?

(a) 1/2 inches

(b) 1/8 inches

(c) 1/4 inches

(d) 1/16 inches

The question was asked in a job interview.

My question comes from Prevention topic in division Corrosion Prevention of Corrosion Engineering

Answer 1

Right option is (c) 1/4 inches

To explain: The approximate thickness of a wall should be twice that of the estimated corrosion rate to meet the mechanical requirements such as pressure, weight, and stress. Hence, the thickness of the given wall is 2*(1/8) = ¼ inches.