# All other cargo tanks — How often hazmat cylinders, cargo tanks, IBCs and portable tanks must be retested

For All other cargo tanks, test or inspection is External Visual Inspection; interval is 1 year; regulation section is 49 CFR § 180.407, recorded from its source on 2026-08-10.

- **Container specification:** All other cargo tanks _(verified: appears in the quote below)_
- **Test or inspection:** External Visual Inspection _(our reading, not quoted from the source)_
- **Interval:** 1 year. _(verified: appears in the quote below)_
- **Regulation section:** 49 CFR § 180.407 _(verified: appears in the quote below)_

## What the source says

> External Visual Inspection: | | | All cargo tanks designed to be loaded by vacuum with full opening rear heads | September 1, 1991 | 6 months. | All other cargo tanks | September 1, 1991 | 1 year.

## Source

- https://www.law.cornell.edu/cfr/text/49/180.407

Last verified: 2026-08-10. Review by: 2027-08-10.
Part of [How often hazmat cylinders, cargo tanks, IBCs and portable tanks must be retested](https://referencesource.org/hazmat-container-retest-intervals/).