3HT · Periodic requalification

For 3HT, test or inspection is Periodic requalification; interval is 3; minimum test pressure is 5/3 times service pressure; regulation section is 49 CFR § 180.209, recorded from its source on 2026-08-06; source re-checked 2026-09-30.

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

3HT | 5/3 times service pressure | 3 ( see §§ 180.209(k) and 180.213(c)).

— law.cornell.edu, retrieved 2026-08-06

Source

• law.cornell.eduhttps://www.law.cornell.edu/cfr/text/49/180.209

Last verified against source: 2026-09-30. Due for re-check by 2027-09-30. This page as Markdown · OKF bundle · full dataset as JSON.