FLAMMABILITY OF SOLIDS (BURNING RATE) TEST PROCESS

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The test is conducted primarily for the purposes of transportation. A powder strip is formed using a triangular cross sectioned mould, onto a heat resistant, non-porous plate. Using a butane flame, one end of the strip is ignited and the initially the time taken to burn over a marked 200 mm length is recorded. If the time taken is equal to or less than 120 s then further trials are conducted over fresh powder strips and the burning rate over a length of 100 mm measured. If the time taken is equal to or less than 45 s (2.2 mm.s-1) then the material is classified as a ‘Flammable or Combustible Solid, of UN Class 4, Division 4.1.

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FLAMMABILITY OF SOLIDS (BURNING RATE) TEST PROCESS

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