# PHMSA Hazmat Incident X-2022091117 — CARBON DIOXIDE, REFRIGERATED LIQUID — ALLENTOWN, PA

**Citation:** PHMSA Hazmat Incident X-2022091117  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2022-08-21  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2022-08-21 in ALLENTOWN, PA.

## Document text

PHMSA hazardous materials incident report X-2022091117.
Incident date: 2022-08-21.
Location: ALLENTOWN, PA.
Mode: Rail.
Carrier/reporter: Norfolk Southern.
Shipper: Linde Canada.
Materials: UN2187; CARBON DIOXIDE, REFRIGERATED LIQUID; hazard class 2.2; 1000 LGA released.
What failed: Frangible Disc.
How failed: Burst or Ruptured.
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://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=st9RXR%2B1J6Kuj5iaNWdNdA%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `20c62cee1912a32cc2ca7bdfa5eee7e6da770974a01e684b152cfccf627c5d69`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-25T06:18:43.943Z
- Document slug: `phmsa-hazmat-incident-x-2022091117`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "X-2022091117",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=st9RXR%2B1J6Kuj5iaNWdNdA%3D%3D",
  "rowCount": 1,
  "carrierReporterNames": [
    "Norfolk Southern"
  ],
  "shipperNames": [
    "Linde Canada"
  ],
  "routes": [
    "LB 87.40"
  ],
  "cities": [
    "ALLENTOWN"
  ],
  "states": [
    "PA"
  ],
  "originCities": [],
  "modes": [
    "Rail"
  ],
  "materials": [
    {
      "identificationNumber": "UN2187",
      "commodityName": "CARBON DIOXIDE, REFRIGERATED LIQUID",
      "hazardousClass": "2.2",
      "quantityReleased": "1000",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": "105A500W",
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "20048",
      "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"
}
```