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Design code — API 650 for atmospheric storage tanks or API 620 for low-pressure tanks, with SATORP engineering standards layered on top for project-specific requirements.

Material traceability — full mill test certificates and heat-number traceability carried from shell, floor, and roof plate material through to the finished tank.

Welding procedure qualification — WPS and PQR documentation, with welders individually qualified under ASME Section IX for shell, floor, and roof welds.

Non-destructive testing — radiographic examination of shell welds, vacuum box testing of floor and roof seams, plus magnetic particle testing where applicable.

Dimensional verification — shell plumbness, roundness, and roof and floor levelness checked against approved drawings before final closure.

Hydrostatic testing — the completed tank filled with water to verify shell and floor integrity before it is placed into service.

Foundation and settlement checks — coordination with civil works to confirm the tank