Coffee Break Training: Hazardous Materials: Is it a Liquid or a Solid?   [open pdf - 514KB]

"Fire inspectors always are on the lookout for accumulations of flammable or combustible liquids or solids that may contribute to dangerous fire conditions, but how do they determine whether those products are liquids or solids for the purpose of applying fire safety regulations? The product in the illustration is a hydrocarbon-based lubricant with a flash point of 515 F (268 C) that if it could flow would qualify it as a Class IIIB combustible liquid, but is it a liquid or solid? National Fire Protection Association 30, 'Flammable and Combustible Liquids Code', defines a liquid as any material that 1) has a fluidity greater than that of 300 penetration asphalt when tested in accordance with American Society for Testing and Materials [ASTM] D 5, 'Standard Test Method for Penetration of Bituminous Materials', or 2) is a viscous substance for which a specific melting point cannot be determined but that is determined to be a liquid in accordance with ASTM D 4359, 'Standard Test for Determining Whether a Material is a Liquid or a Solid'."

Report Number:
Coffee Break Training - Fire Protection Series No. FP-2013-26
Public Domain
Retrieved From:
United States Fire Administration: http://www.usfa.fema.gov/
Media Type:
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