# Dikes, general.

- **operation:** document
- **citation:** 49 CFR 193.2161
- **title:** Dikes, general.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** An outer wall of a component served by an impounding system may not be used as a dike unless the outer wall is constructed of concrete.

[Amdt. 193-17, 65 FR 10959, Mar. 1, 2000]
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-193-2161.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-193-2161.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-193-2161
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-193.2161
**body:**

An outer wall of a component served by an impounding system may not be used as a dike unless the outer wall is constructed of concrete.

[Amdt. 193-17, 65 FR 10959, Mar. 1, 2000]
- **truncated:** false
- **body characters:** 178