# PHMSA Hazmat Incident E-2017080705 — AMMONIA ANHYDROUS — PASCAGOULA, MS

**Citation:** PHMSA Hazmat Incident E-2017080705  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2017-08-22  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2017-08-22 in PASCAGOULA, MS.

## Document text

PHMSA hazardous materials incident report E-2017080705.
Incident date: 2017-08-22.
Location: PASCAGOULA, MS.
Mode: Rail.
Carrier/reporter: CSX TRANSPORTATION.
Shipper: HELENA CHEMICAL CO.
Materials: UN1005; AMMONIA ANHYDROUS; hazard class 2.3; 2.6736 GCF released.
What failed: Mounting Studs.
How failed: Leaked.
Reported failure causes: Defective Component or Device.
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://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=mm2QWBb6y7v4hXMeSwVxdg%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `9498d46a23e77b092a5e74c640fc9b8bc8993ed76752df1151c96040a8f98d24`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-24T13:15:40.941Z
- Document slug: `phmsa-hazmat-incident-e-2017080705`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "E-2017080705",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=mm2QWBb6y7v4hXMeSwVxdg%3D%3D",
  "rowCount": 1,
  "carrierReporterNames": [
    "CSX TRANSPORTATION"
  ],
  "shipperNames": [
    "HELENA CHEMICAL CO"
  ],
  "routes": [
    "mile post 000 703"
  ],
  "cities": [
    "PASCAGOULA"
  ],
  "states": [
    "MS"
  ],
  "originCities": [],
  "modes": [
    "Rail"
  ],
  "materials": [
    {
      "identificationNumber": "UN1005",
      "commodityName": "AMMONIA ANHYDROUS",
      "hazardousClass": "2.3",
      "quantityReleased": "2.6736",
      "unitOfMeasure": "GCF"
    }
  ],
  "packages": [
    {
      "identificationMarkings": "112J340W",
      "outerMaterial": "TC 128 gr B",
      "outerType": null,
      "outerCapacity": "4537.0992",
      "outerCapacityUnit": "GCF",
      "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"
}
```