# Applicability.

- **operation:** document
- **citation:** 49 CFR 180.201
- **title:** Applicability.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** This subpart prescribes requirements, in addition to those contained in parts 107, 171, 172, 173, and 178 of this chapter, for the continuing qualification, maintenance, or periodic requalification of DOT specification and exemption cylinders and UN pressure receptacles.

[71 FR 33894, June 12, 2006
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-180-201.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-180-201.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-180-201
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-180.201
**body:**

This subpart prescribes requirements, in addition to those contained in parts 107, 171, 172, 173, and 178 of this chapter, for the continuing qualification, maintenance, or periodic requalification of DOT specification and exemption cylinders and UN pressure receptacles.

[71 FR 33894, June 12, 2006]
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- **body characters:** 301