# -3 Manhole assemblies.

- **operation:** document
- **citation:** 49 CFR 178.347-3
- **title:** -3 Manhole assemblies.
- **source type:** regulation
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** current
- **official:** true
- **published on:** Not available
- **effective on:** 2026-08-18
- **summary:** Each manhole assembly must conform to § 178.345-5, except that each manhole assembly must be capable of withstanding internal fluid pressures of 40 psig or test pressure of the tank, whichever is greater.

[Amdt. 178-89, 54 FR 25030, June 12, 1989. Redesignated by Amdt. 178-112, 61 FR 18934, Apr. 29
- **machine formats:** - **json:** https://regulus.evalyn.ai/document/49-cfr-178-347-3.json
- **markdown:** https://regulus.evalyn.ai/document/49-cfr-178-347-3.md
- **app url:** https://regulus.evalyn.ai/document/49-cfr-178-347-3
- **source url:** https://www.ecfr.gov/on/2026-08-18/title-49/section-178.347-3
**body:**

Each manhole assembly must conform to § 178.345-5, except that each manhole assembly must be capable of withstanding internal fluid pressures of 40 psig or test pressure of the tank, whichever is greater.

[Amdt. 178-89, 54 FR 25030, June 12, 1989. Redesignated by Amdt. 178-112, 61 FR 18934, Apr. 29, 1996]
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- **body characters:** 307