# Hotwork.

**Citation:** 49 CFR 193.2811  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1999-10-01  
**Published:** Not stated

Welding, flame cutting, and similar operations are prohibited, except at times and places that the operator designates in writing as safe and when constantly supervised in accordance with ANSI/NFPA-51B.

[45 FR 9203, Feb. 11, 1980, as amended at 58 FR 14522, Mar. 18, 1993]

## Document text

Welding, flame cutting, and similar operations are prohibited, except at times and places that the operator designates in writing as safe and when constantly supervised in accordance with ANSI/NFPA-51B.

[45 FR 9203, Feb. 11, 1980, as amended at 58 FR 14522, Mar. 18, 1993]

## Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-1999-title49-vol3/CFR-1999-title49-vol3-sec193-2811>
- Source ID: `govinfo-cfr`
- SHA-256: `ef82a9900c38c106861cd89ee7e1664e97fb3479a8765fcde04f48f7b0bd95fc`
- Retrieved: 2026-08-12T01:41:23.231Z
- Exported: 2026-08-22T17:56:46.403Z
- Document slug: `49-cfr-193-2811`

### Source metadata

```json
{
  "part": "193",
  "section": "193.2811",
  "subpart": "Subpart I—Fire Protection",
  "annualEdition": 1999,
  "revisedAsOf": "1999-10-01",
  "govInfoPackage": "CFR-1999-title49-vol3",
  "legalStatus": "official-annual-cfr-edition",
  "effectiveDateNote": null,
  "historicalAnchor": true,
  "historicalAnchorNote": "The section appears in an official annual CFR edition but is absent from the connected current eCFR corpus.",
  "jurisdiction": "US"
}
```