# PHMSA Hazmat Incident I-1992020138 — SODIUM HYDROXIDE, SOLUTION — RIDGEVILLE, SC

**Citation:** PHMSA Hazmat Incident I-1992020138  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1992-01-23  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 1992-01-23 in RIDGEVILLE, SC.

## Document text

PHMSA hazardous materials incident report I-1992020138.
Incident date: 1992-01-23.
Location: RIDGEVILLE, SC.
Mode: Highway.
Carrier/reporter: SCHWERMAN TRUCKING CO.
Shipper: OLIN CORP.
Materials: UN1824; SODIUM HYDROXIDE, SOLUTION; hazard class 8; 372 LGA released.
What failed: Auxiliary Valve; Piping or Fittings.
How failed: Burst or Ruptured.
Reported failure causes: Rollover Accident; Vehicular Crash or Accident Damage.
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://portalpublic.phmsa.dot.gov/analytics/saw.dll?Portal?PortalPath=/shared/Public%20Website%20Pages/_portal/Hazmat%20Incident%20Report%20Search>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `b3e4ee21b86b613b455ca6baf41a28b8efccd259e91ba305d70ffa5ae311c9f2`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-25T21:00:41.942Z
- Document slug: `phmsa-hazmat-incident-i-1992020138`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-1992020138",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": null,
  "rowCount": 1,
  "carrierReporterNames": [
    "SCHWERMAN TRUCKING CO"
  ],
  "shipperNames": [
    "OLIN CORP"
  ],
  "routes": [
    "HWY 78 AT 178 INTERSECTION"
  ],
  "cities": [
    "RIDGEVILLE"
  ],
  "states": [
    "SC"
  ],
  "originCities": [],
  "modes": [
    "Highway"
  ],
  "materials": [
    {
      "identificationNumber": "UN1824",
      "commodityName": "SODIUM HYDROXIDE, SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "372",
      "unitOfMeasure": "LGA"
    }
  ],
  "packages": [
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "5000",
      "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"
}
```