# PHMSA Hazmat Incident X-2025081952 — ARGON, REFRIGERATED LIQUID (CRYOGENIC LIQUID) — DENISON, TX

- **operation:** document
- **citation:** PHMSA Hazmat Incident X-2025081952
- **title:** PHMSA Hazmat Incident X-2025081952 — ARGON, REFRIGERATED LIQUID (CRYOGENIC LIQUID) — DENISON, TX
- **source type:** incident
- **agency:** Pipeline and Hazardous Materials Safety Administration
- **status:** historical
- **official:** true
- **published on:** Not available
- **effective on:** 2025-08-22
- **summary:** Serious reporter-submitted hazardous materials transportation incident on 2025-08-22 in DENISON, TX.
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- **source url:** https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=zorKqDie%2FGi%2BvSS2HOpeGQ%3D%3D
**body:**

PHMSA hazardous materials incident report X-2025081952.
Incident date: 2025-08-22.
Location: DENISON, TX.
Mode: Rail.
Carrier/reporter: UNION PACIFIC RAILROAD COMPANY INC.
Shipper: Airgas USA.
Materials: UN1951; ARGON, REFRIGERATED LIQUID (CRYOGENIC LIQUID); hazard class 2.2; 16520 LGA released.
What failed: Liquid Line.
How failed: Leaked.
Reported failure causes: Broken 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.
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- **body characters:** 706