United States Department of Transportation
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Tasks 11-12: Hotwire Explosion Screening Testing of Modified Thermites: Large-Scale Mix ID's #1 and #4
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2023-08-21
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Series: Thermites
[WMV-308.33 MB]
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Abstract:Hotwire explosion screening for additives. For many years, the properties of thermites have perplexed test laboratories and regulators; one thermite manufacturer published on their website that they had provided a sample of their thermite to a well-known and respected international test laboratory that performed the UN Test N.1 Flammable solids test on the sample, only to have the thermite pass the test criteria; it was the conclusion of the test laboratory that the thermite was non-regulated for transport. Manufacturers, testing laboratories and regulators have been struggling together with the proper characterization and classification of thermites. U.S. DOT PHMSA, taking a very rational but extremely unpopular position, began regulating thermites, since they were being manufactured with the view to producing a pyrotechnic effect, under the same classification system as explosives.
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Content Notes:U.S. DOT PHMSA publicly released Safety Management Services’ Thermite Research Report on April 16, 2024. The report and supporting videos are available as part of the Thermites series.
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