API 510 Practice Questions - API 510 Pressure Vessel Inspector Exam

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A pressure vessel TML measured 0.625 in. four years ago now reads 0.565 in. after 4 years in service. What corrosion rate should the inspector use from these data?

0.015 in./year 0.24 in./year -0.015 in./year 0.141 in./year

Correct Answer:

0.015 in./year

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