# Impoundment capacity: equipment and transfer systems.

**Citation:** 49 CFR 193.2183  
**Type / status:** regulation / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1999-10-01  
**Published:** Not stated

If an impounding system serves a component under § 193.2149(b) (1)-(3), it must have a minimum volumetric liquid impoundment capacity equal to the sum of—

(a) One-hundred percent of the volume of liquid that could be contained in the component and, where applicable, tank car or tank truck served; a

## Document text

If an impounding system serves a component under § 193.2149(b) (1)-(3), it must have a minimum volumetric liquid impoundment capacity equal to the sum of—

(a) One-hundred percent of the volume of liquid that could be contained in the component and, where applicable, tank car or tank truck served; and

(b) The maximum volume of liquid which could discharge into the impounding space from any single failure of equipment or piping during the time period necessary for spill detection, instrument response, and sequenced shutdown by the automatic shutdown system under § 193.2439.

## Provenance

- Official: Yes
- Source: <https://www.govinfo.gov/app/details/CFR-1999-title49-vol3/CFR-1999-title49-vol3-sec193-2183>
- Source ID: `govinfo-cfr`
- SHA-256: `364c8a4594b8e288658be322c9d606223a01b79e919f5fe58b857589586229a9`
- Retrieved: 2026-08-12T01:41:23.231Z
- Exported: 2026-08-24T21:02:13.889Z
- Document slug: `49-cfr-193-2183`

### Source metadata

```json
{
  "part": "193",
  "section": "193.2183",
  "subpart": "Subpart C—Design",
  "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"
}
```