Effective standards for means of containment are a key element in ensuring the engineering, performance and manufacturing integrity of dangerous goods tanks used in transportation. Equally important is ensuring that effective compliance and enforcement tools are readily available and functional. On January 22, 1979, regulations were implemented to mandate the use of thermal protection on specific railway tank cars in dangerous goods service. Thermal protection has been proven to delay or eliminate failure of the tank and provide emergency response personnel with more time to properly assess accidents and take appropriate action in situations involving fire. Thermal protection was also a means to significantly reduce the possibility of a Boiling Liquid Expanding Vapor Explosion (BLEVE).
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