What is MAWP if the next inspection is planned in 5 years?

A piping system that operates at a design pressure of 100 psi at 950? F was originally built from NPS 20 EFW (100% radiographed), ½” wall, A-516 Grade 70, A-671 material. During the last Inspection, the thickness was determined to be 0.370 inches. The records indicated the corrosion rate to be 0.009 inches per year.

What is MAWP if the next inspection is planned in 5 years?
A . 126 psi
B. 285.17 psi
C. 98.23 psi
D. Not enough information given

Answer: A

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