EN 15188:2007

Foreword
Introduction
1 Scope
2 Terms and definitions
3 Test apparatus
  3.1 Sample baskets
  3.2 Oven
  3.3 Thermocouples
  3.4 Temperature recording equipment
4 Preparation of dust samples
5 Procedure
  5.1 Experimental Procedure
  5.2 Evaluation of tests
  5.3 Calibration of thermocouples
6 Test report
Annex A (informative) - Evaluation of experimental results
        for self-ignition temperatures
  A.1 Introduction
  A.2 Methods based on the thermal explosion theory
  A.3 Numerical solution of Fourier's equation
Annex ZA (informative) - Relationship between this European
         Standard and the Essential Requirements of EU
         Directive 94/9/EC
Bibliography

This European Standard specifies analysis and evaluation procedures for determining self-ignition temperatures (TSI) of combustible dusts or granular materials as a function of volume by hot storage experiments in ovens of constant temperature. The specified test method is applicable to any solid material for which the linear correlation of lg (V/A) versus the reciprocal self-ignition temperature 1/TSI (with TSI in K) holds (i.e. not limited to only oxidatively unstable materials).This European Standard is not applicable to the ignition of dust layers or bulk solids under aerated conditions (e.g. as in fluid bed dryer).This European Standard shall not be applied to dusts like recognised explosives that do not require atmospheric oxygen for combustion, nor to pyrophoric materials.NOTEBecause of regulatory and safety reasons "recognised explosives" are not in the scope of this European Standard. In spite of that, substances which undergo thermal decomposition reactions and which are not "recognised explosives" but behave very similarly to self-ignition processes when they decompose are in the scope. If there are any doubts as to whether the dust is an explosive or not, experts should be consulted.