Stanley Azzopardi Abstract: The objective of this paper is to review the practices, postures and workstations in Maltese fireworks factories which may cause back pain and musculoskeletal disorders to fireworkers. Hazards varying from the toxicity of substances used to produce colours and pyro-effects up to ergonomic adversities that such processes impose upon the workers are …
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Category:JPyro – Articles
The main category – things that are published in the Journal
Hazard Assessment and Effect of Nano-Sized Oxidizer on Sound Level Analysis of Firecrackers
T. L.Thanulingam, A. Jeya Rajendran, P. Karlmarx, K. Subramanianc and A. Azhagurajan Abstract: Nano-sized sulphur and oxidizers were synthesized by the ball mill method and the size was determined using a particle size analyzer. Pyrotechnic mixtures of compositions using five different oxidizers: potassium nitrate (KNO3), potassium perchlorate (KClO4), barium nitrate (Ba(NO3)2), strontium nitrate (Sr(NO3)2) and bismuth …
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Emissions of Reaction Products and Sound from Outdoor and Indoor Firework Displays
Andreas Dutschke, Stefan Seeger, Lutz Kurth, Ulrich Pannea, and Christian Lohrer Abstract: This work presents results of investigations towards the emission of chemical reaction products and sound pressure during an outdoor and an indoor firework display. Potentially harmful and toxic gases, and aerosols, were measured as well as sound pressures. Aerosols were measured with a …
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Pyrotechnically Relevant Salts of 1-(2-Chloroethyl)-5-nitriminotetrazole – Synthesis and Coloring Properties
Thomas M. Klapötke, Jörg Stierstorfer and Karina R. Tarantika Abstract: agents. Salts of strontium are responsible for a red green one and copper salts, only combined with a chlorine donor, are able to yield a blue To investigate the possibility of reducing the amount of metal in pyrotechnic formulations producing colored 1-(2-chloroethyl)-5-nitriminotetrazolato- nitrimino tetrazolate and trans-[diammine-bis{1-(2-chloroethyl)-5-nitrimino …
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Characteristics of the Red Colored Flame of Firework Compositions
Dayu Ding, Daichi Tabata and Tadao Yoshida Abstract:: Experiments have been conducted varying the oxygen balance of fi rework compositions and adding a chlorine donor to compositions in order to understand how or why a red fl ame is affected by the oxygen balance and presence of chlorine in the composition. The results show that …
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A New And Fast Method Of Evaluating Powder Energy
Andrew Tang, Hilary Chen and Andy Tang Abstract: In the fireworks or pyrotechnics industry, black powder (nitrate–sulphur–charcoal) is a traditional and commonly used base for creating other chemical compositions. Due to the large variety of pyrotechnic effects, the creation of such different compositions that meet so many needs has led to many different formulations. The …
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Effects of Variation of Component Content on the Colored Flame of Firework Star Compositions
Kazuomi Itoh, Hideo Watanabe, Dayu Ding and Tadao Yoshida Abstract: The spectra of the colored flames of firework compositions were measured with a spectrometer and processed into chromaticity coordinates. The change in color purity as a function of composition is shown using chromaticity diagrams. Firework star compositions of red, yellow, green and blue were tested. …
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Metal–Fluorocarbon Pyrolants: IX. Burn rate and Radiometric Performance of Magnesium/Teflon/Viton (MTV) Modified with Zirconium
Ernst-Christian Koch Abstract: The burn rate, u (mm s−1) of fuel rich magnesium/Teflon/Viton (MTV) is increased by 65% upon addition of zirconium whereas the spectral efficiency Eβ (J g−1 sr−1) is reduced by 15%. Keywords: Burn rate, zirconium, magnesium, MTV, polytetrafluoroethylene, radiometry, TeflonTM, VitonTM Ref: JPyro, Issue 28, 2009, pp16-18 (J28_16)
Fireworks on the Sumida River
Damien Liu-Brennan and Tadao Yoshida Abstract: Fireworks (hanabi) were originally displayed on the Sumida River in 1733 as a memorial service for the victims of starvation due to crop failures and plague, and an epidemic of cholera. The fireworks display originated as the “Ryōgoku Kawabiraki Hanabi” (Ryōgoku River-Opening Fireworks) with only 20 fireworks displayed. Although …
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Sound Level Analysis of Firecrackers
Jeya Rajendran and T. L.Thanulingam Abstract: The noise levels from sound-producing firecrackers, both commercial and newly formulated, were measured. Commercial sound-producing firecrackers produce noise in the range of 130.7 dB(AI)/150.4 dB(C) peak to 142.8 dB(AI)/162.6 dB(C) peak at a distance of 4 m. A set of pyrotechnic compositions of potassium nitrate (KNO3), sulphur (S), aluminium (Al) and boric acid (H3BO3) …
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