# Internal corrosion control.

**Citation:** 49 CFR 193.2631  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

Each component that is subject to internal corrosive attack must be protected from internal corrosion by—

(a) Material that has been designed and selected to resist the corrosive fluid involved; or

(b) Suitable coating, inhibitor, or other means.

## Document text

Each component that is subject to internal corrosive attack must be protected from internal corrosion by—

(a) Material that has been designed and selected to resist the corrosive fluid involved; or

(b) Suitable coating, inhibitor, or other means.

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-193.2631>
- Source ID: `ecfr`
- SHA-256: `c7874c169c7a30129dde50b869fce919d99202cb69edb44f594a2c7d64085ffd`
- Retrieved: 2026-08-20T05:54:35.243Z
- Exported: 2026-08-24T08:03:08.933Z
- Document slug: `49-cfr-193-2631`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "193",
  "section": "193.2631",
  "subpart": "Subpart G—Maintenance",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```