Reference Source

Specification 56 or 57 portable tank · periodic inspection and test

For Specification 56 or 57 portable tank, test or inspection is periodic inspection and test; interval is at least once every 2.5 years; regulation section is 49 CFR § 180.605, recorded from its source on 2026-08-10; source re-checked 2026-09-30.

Container specification
Specification 56 or 57 portable tank verified
Test or inspection
periodic inspection and test our reading
Interval
at least once every 2.5 years verified
Regulation section
49 CFR § 180.605
Sourcelaw.cornell.edu
Verified
Review by
DatasetHow often hazmat cylinders, cargo tanks, IBCs and portable tanks must be retested

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

(3) Each Specification 56 or 57 portable tank must be given a periodic inspection and test at least once every 2.5 years.

— law.cornell.edu, retrieved 2026-08-10

Source

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