# Auxiliary power sources.

**Citation:** 49 CFR 193.2613  
**Type / status:** regulation / current  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2026-08-18  
**Published:** Not stated

Each auxiliary power source must be tested monthly to check its operational capability and tested annually for capacity. The capacity test must take into account the power needed to start up and simultaneously operate equipment that would have to be served by that power source in an emergency.

## Document text

Each auxiliary power source must be tested monthly to check its operational capability and tested annually for capacity. The capacity test must take into account the power needed to start up and simultaneously operate equipment that would have to be served by that power source in an emergency.

## Provenance

- Official: Yes
- Source: <https://www.ecfr.gov/on/2026-08-18/title-49/section-193.2613>
- Source ID: `ecfr`
- SHA-256: `19c6192c6f463e74c19557c4acd14556977b57b3ac098515d1d7468b61c6ff5a`
- Retrieved: 2026-08-20T05:54:35.243Z
- Exported: 2026-08-23T22:22:53.090Z
- Document slug: `49-cfr-193-2613`

### Source metadata

```json
{
  "cfrTitle": 49,
  "part": "193",
  "section": "193.2613",
  "subpart": "Subpart G—Maintenance",
  "corpusVersion": "2026-08-18",
  "jurisdiction": "US"
}
```