# Specification 60 portable tank — How often hazmat cylinders, cargo tanks, IBCs and portable tanks must be retested

For Specification 60 portable tank, test or inspection is periodic inspection and test; interval is at the end of the first 4-year period after the original test; at least once every 2 years thereafter up to a total of 12 years of service; and at least once annually thereafter; condition or service qualifier is Retesting is not required on a rubber-lined tank except before each relining; regulation section is 49 CFR § 180.605, recorded from its source on 2026-08-10.

- **Container specification:** Specification 60 portable tank _(verified: appears in the quote below)_
- **Test or inspection:** periodic inspection and test _(our reading, not quoted from the source)_
- **Interval:** at the end of the first 4-year period after the original test; at least once every 2 years thereafter up to a total of 12 years of service; and at least once annually thereafter _(verified: appears in the quote below)_
- **Condition or service qualifier:** Retesting is not required on a rubber-lined tank except before each relining _(verified: appears in the quote below)_
- **Regulation section:** 49 CFR § 180.605 _(verified: appears in the quote below)_

## What the source says

> (4) Each Specification 60 portable tank must be given a periodic inspection and test at the end of the first 4-year period after the original test; at least once every 2 years thereafter up to a total of 12 years of service; and at least once annually thereafter. Retesting is not required on a rubber-lined tank except before each relining.

## Source

- https://www.law.cornell.edu/cfr/text/49/180.605

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/).