Advice on inspecting a steel storage tank

What the standards actually require, what an inspection finds, and what the findings cost to act on. Three new articles a week.

The swept bottom plates of an out-of-service tank interior, lap welds visible under a work light

Latest · July 30, 2026 · 8 min

What API 653 actually requires, in the order it requires it

Three kinds of examination on three different clocks, and the clocks are not all fixed. Understanding which one you are due for is most of the work.

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An inspection scoped against your tank

Four questions, then a call with the drawings open. Diameter and history belong in that call, not in a form.

Steel Tank Inspection carries out API 653 and STI SP001 inspections on welded steel storage tanks: external and internal examinations, ultrasonic thickness readings, bottom evaluation, and the report the standard requires.

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