# PHMSA Hazmat Incident I-1999040177 — CARBON DIOXIDE, REFRIGERATED LIQUID — MOBILE, AL

**Citation:** PHMSA Hazmat Incident I-1999040177  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1999-03-10  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 1999-03-10 in MOBILE, AL.

## Document text

PHMSA hazardous materials incident report I-1999040177.
Incident date: 1999-03-10.
Location: MOBILE, AL.
Mode: Rail.
Carrier/reporter: ILLINOIS CENTRAL RAILROAD CO.
Shipper: AIR GAS CARBONIC.
Materials: UN2187; CARBON DIOXIDE, REFRIGERATED LIQUID; hazard class 2.2; 401.25 LGA released.
What failed: Vent.
Reported failure causes: Over-pressurized.
Reported result: Vapor(Gas) Dispersion.
Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.

## Provenance

- Official: Yes
- Source: <https://portalpublic.phmsa.dot.gov/analytics/saw.dll?Portal?PortalPath=/shared/Public%20Website%20Pages/_portal/Hazmat%20Incident%20Report%20Search>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `5656b343b22ab03f26a1c7d46e342c26254fa1c0378365416248599c04baa45a`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-24T22:26:52.533Z
- Document slug: `phmsa-hazmat-incident-i-1999040177`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-1999040177",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": null,
  "rowCount": 1,
  "carrierReporterNames": [
    "ILLINOIS CENTRAL RAILROAD CO"
  ],
  "shipperNames": [
    "AIR GAS CARBONIC"
  ],
  "routes": [
    "701 DEKIE DRIVE"
  ],
  "cities": [
    "MOBILE"
  ],
  "states": [
    "AL"
  ],
  "originCities": [],
  "modes": [
    "Rail"
  ],
  "materials": [
    {
      "identificationNumber": "UN2187",
      "commodityName": "CARBON DIOXIDE, REFRIGERATED LIQUID",
      "hazardousClass": "2.2",
      "quantityReleased": "401.25",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "18501",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    }
  ],
  "reportingRuleContext": [
    "171.15",
    "171.16"
  ],
  "caveat": "Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.",
  "privacyCaveat": "The public CSV excludes preparer contact fields. Event Description is intentionally excluded from normalized records and search output to reduce incidental personal-information risk.",
  "jurisdiction": "US"
}
```