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U.S. Department of Transportation U.S. Department of Transportation Icon United States Department of Transportation United States Department of Transportation

Improving Thermal Protection of Cryogenic Tank Cars Through Testing, Analysis, and Evaluation of Pressure Relief Valve System Performance

Document Series
Technical Reports
Author
Federal Railroad Administration
Report Number
DOT/FRA/ORD-24/01
Office
RDI-22
Subject Hazardous Materials
Keywords
Cryogenic fluid, dual phase flow, simulation, fire, LNG
Document
Thermal Protection of Cryogenic Tank Cars_0.pdf (4.59 MB)

The Federal Railroad Administration (FRA) sponsored a research team to conduct high fidelity finite element (FE) modeling to evaluate the effects of post-derailment motion on PRV system damage and the performance of structural countermeasures. The team conducted physical tests to measure the response of a typical PRV under cryogenic liquid flow as well as the thermal properties of an ignited PRV exhaust plume. Researchers then conducted additional FE modeling to apply the experimentally determined PRV exhaust (i.e., jet) fires to an ISO UN-T75 tank and quantify the tank’s response in multiple fire-exposed scenarios


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Last updated: Thursday, January 25, 2024