# PHMSA Hazmat Incident E-2012020294 — CARBON DIOXIDE — MILWAUKEE, WI

**Citation:** PHMSA Hazmat Incident E-2012020294  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 2012-01-30  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 2012-01-30 in MILWAUKEE, WI.

## Document text

PHMSA hazardous materials incident report E-2012020294.
Incident date: 2012-01-30.
Location: MILWAUKEE, WI.
Mode: Highway.
Carrier/reporter: Welders Supply Company.
Shipper: Welders Supply Company.
Materials: UN1013; CARBON DIOXIDE; hazard class 2.2; 0.91905 GCF released | UN1073; OXYGEN, REFRIGERATED LIQUID (CRYOGENIC LIQUID); hazard class 2.2; 45 LGA released.
What failed: Cylinder Valve / Gauging Device.
How failed: Cracked.
Reported failure causes: Too Much Weight on Package / Vehicular Crash or Accident Damage.
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=ToRh7s%2Fxz6Fmkp0AvwDUbg%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `ea00806091187c52f2467a405b9d0663e93d5896bde4309a7078383d861cb2b1`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-26T23:32:58.326Z
- Document slug: `phmsa-hazmat-incident-e-2012020294`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "E-2012020294",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=ToRh7s%2Fxz6Fmkp0AvwDUbg%3D%3D",
  "rowCount": 3,
  "carrierReporterNames": [
    "Welders Supply Company"
  ],
  "shipperNames": [
    "Welders Supply Company"
  ],
  "routes": [
    "I94EB one mile west of 27th St"
  ],
  "cities": [
    "MILWAUKEE"
  ],
  "states": [
    "WI"
  ],
  "originCities": [],
  "modes": [
    "Highway"
  ],
  "materials": [
    {
      "identificationNumber": "UN1013",
      "commodityName": "CARBON DIOXIDE",
      "hazardousClass": "2.2",
      "quantityReleased": "0.91905",
      "unitOfMeasure": "GCF"
    },
    {
      "identificationNumber": "UN1073",
      "commodityName": "OXYGEN, REFRIGERATED LIQUID (CRYOGENIC LIQUID)",
      "hazardousClass": "2.2",
      "quantityReleased": "45",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": "3AA2015",
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "1.06944",
      "outerCapacityUnit": "GCF",
      "outerShipmentCount": "9",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": "4L200",
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "45",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "4",
      "outerFailedCount": "3",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    },
    {
      "identificationMarkings": "4L212",
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "45",
      "outerCapacityUnit": "LGA",
      "outerShipmentCount": "4",
      "outerFailedCount": "3",
      "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"
}
```