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

For All cargo tanks, test or inspection is Internal Visual Inspection; interval is 1 year; condition or service qualifier is transporting lading corrosive to the tank; regulation section is 49 CFR § 180.407, recorded from its source on 2026-08-10.

- **Container specification:** All cargo tanks _(verified: appears in the quote below)_
- **Test or inspection:** Internal Visual Inspection _(our reading, not quoted from the source)_
- **Interval:** 1 year. _(verified: appears in the quote below)_
- **Condition or service qualifier:** transporting lading corrosive to the tank
- **Regulation section:** 49 CFR § 180.407 _(verified: appears in the quote below)_

## What the source says

> All cargo tanks transporting lading <https://www.law.cornell.edu/definitions/index.php?width=840&height=800&iframe=true&def_id=8bbe162c196eaa04dec2c59655d23c2e&term_occur=999&term_src=Title:49:Subtitle:B:Chapter:I:Subchapter:C:Part:180:Subpart:E:180.407> corrosive to the tank | 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/).