# PHMSA Hazmat Incident I-2007120477 — AMMONIA ANHYDROUS — SILER CITY, NC

**Citation:** PHMSA Hazmat Incident I-2007120477  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2007-11-01  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2007-11-01 in SILER CITY, NC.

## Document text

PHMSA hazardous materials incident report I-2007120477.
Incident date: 2007-11-01.
Location: SILER CITY, NC.
Mode: Highway.
Carrier/reporter: AIRGAS SPECIALTY PRODUCTS.
Shipper: AIRGAS SPECIALTY PRODUCTS.
Materials: UN1005; AMMONIA ANHYDROUS; hazard class 2.2; 34.5897 GCF released.
What failed: Excess Flow Valve.
How failed: Torn Off or Damaged.
Reported failure causes: Broken 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=X1LKZ8pQV554t3%2Bi7gyebQ%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `26ac19fd49564c9eb99d58d0ced5892f26c1cfef16e0aeb67a795bb953a91e32`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-24T04:26:05.152Z
- Document slug: `phmsa-hazmat-incident-i-2007120477`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-2007120477",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=X1LKZ8pQV554t3%2Bi7gyebQ%3D%3D",
  "rowCount": 1,
  "carrierReporterNames": [
    "AIRGAS SPECIALTY PRODUCTS"
  ],
  "shipperNames": [
    "AIRGAS SPECIALTY PRODUCTS"
  ],
  "routes": [
    "HWY 64"
  ],
  "cities": [
    "SILER CITY"
  ],
  "states": [
    "NC"
  ],
  "originCities": [],
  "modes": [
    "Highway"
  ],
  "materials": [
    {
      "identificationNumber": "UN1005",
      "commodityName": "AMMONIA ANHYDROUS",
      "hazardousClass": "2.2",
      "quantityReleased": "34.5897",
      "unitOfMeasure": "GCF"
    }
  ],
  "packages": [
    {
      "identificationMarkings": "MC 331 NQT",
      "outerMaterial": "STEEL",
      "outerType": null,
      "outerCapacity": "0",
      "outerCapacityUnit": null,
      "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"
}
```