# PHMSA Hazmat Incident I-2023050115 — ARGON, REFRIGERATED LIQUID (CRYOGENIC LIQUID) — Kansas City, MO

**Citation:** PHMSA Hazmat Incident I-2023050115  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2023-04-26  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2023-04-26 in Kansas City, MO.

## Document text

PHMSA hazardous materials incident report I-2023050115.
Incident date: 2023-04-26.
Location: Kansas City, MO.
Mode: Rail.
Carrier/reporter: THE KANSAS CITY SOUTHERN RAILWAY COMPANY.
Shipper: AIRGAS USA LLC.
Materials: UN1951; ARGON, REFRIGERATED LIQUID (CRYOGENIC LIQUID); hazard class 2.2; 300 LGA released.
What failed: Liquid Valve; Liquid Valve.
How failed: Leaked; Leaked.
Reported failure causes: Loose Closure, Component, or Device; Missing Component or Device.
Reported result: Spillage.
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=%2BL%2BSlQcwjMNqpCjOXG5cRw%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `8f09fed477b7d63533a5db0c6353c68586a069053f83e59a4d8ae415eef22d19`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-27T09:37:02.545Z
- Document slug: `phmsa-hazmat-incident-i-2023050115`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-2023050115",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=%2BL%2BSlQcwjMNqpCjOXG5cRw%3D%3D",
  "rowCount": 1,
  "carrierReporterNames": [
    "THE KANSAS CITY SOUTHERN RAILWAY COMPANY"
  ],
  "shipperNames": [
    "AIRGAS USA LLC"
  ],
  "routes": [
    "4747 FRONT STREET"
  ],
  "cities": [
    "Kansas City"
  ],
  "states": [
    "MO"
  ],
  "originCities": [
    "NEDERLAND"
  ],
  "modes": [
    "Rail"
  ],
  "materials": [
    {
      "identificationNumber": "UN1951",
      "commodityName": "ARGON, REFRIGERATED LIQUID (CRYOGENIC LIQUID)",
      "hazardousClass": "2.2",
      "quantityReleased": "300",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": "113A90W",
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "17000",
      "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"
}
```