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- Vortrag (43) (entfernen)
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- BAM-Fallhammer (3)
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Organisationseinheit der BAM
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Testing of the impact sensitivity of explosives is one of the essential characterisation steps in a safety study. Threshold levels have been agreed from experience for certain processing steps and in relation to handling instructions. However, how reliable is the information, that an explosive has an impact sensitivity of X Joule? This will partly depend on the judgement of the test operator, but also on the statistical method, and on the energetic parameters of the test apparatus. This work focuses on the mechanical performance of the BAM-Fallhammer and how much of the initially available potential energy is transferred to the sample. The differences to the nominal value can be quite large under some conditions. Therefore the energy loss has to be characterised and should possibly be taken into account. In addition an attempt is made, to make results more comparable when the amount of energy loss has been determined by a method shown in the presentation.
During a European convention of the authorities for market surveillance (AdCO) for explosives the activities of the notified bodies are presented, putting a focus on matters concerning market surveillance.
The presentation outlined in detail, which verifications are possible
with explosives, while practical tests involving initiation of
explosives are excluded. Elements of labeling and the conclusions in
view of quality control were explained, and typical failures by
manufacturers to comply were orally described.
Permitted explosives have a tradition of many decades in Germany and had been designed to the needs of the underground coal mining in the Ruhr. In neighboring countries of Germany similar provisions were made to prevent hazards from fire damp and coal dust explosions in underground coal mines. Due to the termination of coal mining in Germany and most other European countries, also the testing facilities are disappearing. This presentation outlines the current situation of testing regimes and facilities.