ISO 25947-5:2017 pdf download – Fireworks — Categories 1, 2 and 3 — Part 5: Requirements for construction and performance.
4.3 Permitted elements in batteries, batteries requiring external support, combinations and combinations requiring external support (type and batch test) The following elements can be used in batteries and batteries requiring external support: bangers and flash bangers, Bengal flames, crackling granules, fountains, ground spinners, mines, party poppers, rockets (assembled in a launcher), Roman candles, spinners, shot tubes and wheels; the same limits (mass, composition, etc.) as given in Table 1 apply to these elements. The following elements can be used in combinations and combinations requiring external support: bangers and flash bangers, Bengal flames, fountains, mines, Roman candles, shot tubes, spinners and wheels; the same limits (mass, composition, etc.) as given in Table 1 apply to these elements. Conformity to above requirements shall be verified by visual examination. 4.4 Dimensions for mini rockets (type test and batch test) When tested in accordance with ISO 25947-4:2017, 6.2.5 and 6.2.3, mini rockets shall have the following dimensions: — outer diameter of tube: maximum 10 mm; — length of tube: maximum 60 mm; — total length: minimum 250 mm, maximum 350 mm.
Category of a compound firework is determined by the highest category amongst the individual fireworks in the compound firework and the NEC limits given in Table 1, whichever is the highest. The requirements for the single fireworks shall comply with the requirements of this document. The single fireworks shall be fixed onto a non-metallic base plate to increase stability during functioning. All single fireworks shall remain in their initial position during functioning. The manufacturer shall provide technical drawings of the compound fireworks and part lists of all incorporated pyrotechnic articles (fireworks category 1, 2, 3 as well as pyrotechnic cords and fuses). The type and batch tests shall include a check of the documents and outer dimensions. The outer dimensions shall be verified by the method described in ISO 25947-4:2017, 6.2.3. If transmitting fuses are used to connect the individual fireworks articles, only protruding fuses, which not burn instantaneously, are permitted. Every single article in a compound firework shall be oriented as individually type tested. Elements which guarantee the stability of the firework during its functioning as single article may be omitted if a sufficient fixing on a base plate is made. Relevant elements are, for example, loose attachment bases, metal fixings (loops)/spikes to be inserted in the ground, foldable bases or packings with fixing function. The use of a primary pack is mandatory for compound fireworks.