DOT 3A or 3AA
For DOT 3A or 3AA, test or inspection is Periodic requalification; interval is every ten years instead of every five years; condition or service qualifier is removed from any cluster, bank, group, rack, or vehicle each time it is filled; regulation section is 49 CFR § 180.209, recorded from its source on 2026-08-06.
- Container specification
- DOT 3A or 3AA verified
- Test or inspection
- Periodic requalification our reading
- Interval
- every ten years instead of every five years verified
- Condition or service qualifier
- removed from any cluster, bank, group, rack, or vehicle each time it is filled verified
- Regulation section
- 49 CFR § 180.209 verified
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
A cylinder conforming to specification DOT 3A or 3AA with a water capacity of 56.7 kg (125 lb) or less that is removed from any cluster, bank, group, rack, or vehicle each time it is filled, may be requalified every ten years instead of every five years, provided the cylinder conforms to all of the following conditions:
— law.cornell.edu, retrieved 2026-08-06
Source
- law.cornell.eduhttps://www.law.cornell.edu/cfr/text/49/180.209