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The European Standard series EN 16261 consisting of four parts deals with the testing and assessment of display fireworks in order to satisfy the essential safety requirements of the Directive 2007/23/EC which have to be met before placing these articles on the EU market. The current Version of this Standard provides mortar dimension limits to be used for the assessment of burst heights of spherical Shells, but lacks corresponding provisions for cylindrical shells. The aim of this study was threefold:
1. To check whether the requirements for spherical shells would overlap with the ones
for cylindrical shells,
2. To compare several test procedures for height measurements with each other to
minimize the measurement uncertainty of the effect dimensions, and
3. To evaluate drift distances in order to check whether the current national provisions
on safety distances for Professional fireworks displays need adaption during the
implementation of the new European directive 2013/29/EU on pyrotechnics in German legislation.
For this study, a large number of cylindrical shells was specifically manufactured to guarantee lull control on all relevant constructional aspects. These shells were designed with a smoke tracer and no burst Charge so that they would fall back to the ground in order to investigate their drift distances. Their gross mass corresponded to commercially available display shells, though, consisting of defined inert substances inside the shell. The following Parameters were varied in this study: caliber (75 mm, 100 mm, 150 mm), shell length per caliber (single and double length), lift Charge (hard and soft burst effect), mortar length per caliber (short and long). In total, more than 120 shells were manufactured and tested. Results show a good application of the proposed test procedures regarding the mortar dimensions given in the Standard series for cylindrical shells as well. The following test procedures were part of this study: Radar Doppler System, video grammetric System, universal surveying instruments, and mortar internal pressure measurements. Observed drift distances in relation to the caliber and effect heights are discussed and assessed.