Pyrotechnic articles

NFPA 1125 Pyrotechnic Articles Code for the Manufacture of Model Rocket and High Power Rocket Motors... 

Pyrotechnic article means an article containing one or more pyrotechnic substances ... 

Products With Precisely Predetermined Reactivity To this group belong, for example, pyrotechnic articles or components and chemical oxygen generators. These materials must feature precisely predetermined, reproducible, and often variable speed(s) of reaction. 

Many other pyrotechnic articles are in use including gas generators, heat generators, theatrical effects (simulated bullets, smoke, flash powder), flashbulbs, airbag inflators, and thermitic welding kits. There is not a clear division between these and certain explosive articles. 

Fireworks Pyrotechnic articles designed for entertainment. UN App. B, ICAO A2, US 173.59 Fireworks. Fireworks are pyrotechnic articles designed for entertainment. lATA App. A... 

The detection of ammonium perchlorate, an important constituent of solid rocket propellants, in the ground waters of some U.S. federal states is alarming. Significant amounts have been measured in areas where rocket fuel, ammunition, or pyrotechnic articles are developed, tested, or manufactured. Even in low concentrations, perchlorate represents a health risk for human beings, because it affects hormone production in the thyroid. Initial investigations by the U.S. EPA indicate a health risk at perchlorate concentrations above 4-18 Hg/L. In California, perchlorate has been detected in more than 100 drinking water wells 20 of them had to be closed because they exceed the above-mentioned limit. Trace analysis of perchlorate is a difficult analytical task. Ion chromatogra-... 

An explosive or pyrotechnic article is an article containing one or more explosive or pyrotechnic substances or mixtures. GHS provides the overall and detailed scheme of procedure and precise criteria for subsequent classifications of substances, mixtures, or articles in this class of explosives. 

Chinese fireworks remain popular in the United States today, along with an assortment of other types of pyrotechnic articles that produce a wide assortment of visible and audible effects. The Japanese also produce beautiful fireworks, but curiously, they do not appear to have developed the necessary technology until fireworks were brought to Japan around 1600 A.D. by an English visitor. Many of the advances in fireworks technology over the past several centuries have come from these two Asian nations, and China today is the world s primary supplier of both consumer and display fireworks. 

TITANIUM SPARKS (See color insert following page 112) A titanium fountain uses relatively coarse titanium particles blended into a moderately fast-burning pyrotechnic composition to produce a beautiful spray of white sparks. This type of fountain effect is widely used in the fireworks industry as well as in theatrical pyrotechnical articles (special effects) for stage presentations. (Photo by Tim Wade and Dennis King, courtesy of MP Associates.)... 

Ellem (Ref 138, p 181) also describes pyrotechnic means of producing explosive and whistling sound. Recent advances in the art of generating oscillating light signals are described in Section 8 of this article... 

Materials Handbook , The Bermite Division of the Whittaker Corporation TR 690 (Sept 1969), AD 510 018L. The material was not used in compiling data for this article 140) G.W, Weingart, Pyrotechnics , 2nd Ed, Chemical Publishing Co, Brooklyn, NY (1947, reprinted 1968) 141) R.M. Blunt, Ed, Proceedings of... 

Effectiveness Manual, Weapons Characteristics , NAVAIR 00-130-ASR-2 (C> (15 Dec 1975), not used in this article 160) R.M. Blunt, Ed, Proceedings of the Fifth International Pyrotechnic Seminar, Vail, Colo, Denver Research Institute, Denver Colo (July 1976)... 

FIREWORK An article containing a pyrotechnic composition which, upon functioning, will burn and/or explode to produce visual and/ or aural effects which are used for entertainment or signalling. 

FUSEE An article resembling a safety match but which has additional pyrotechnic composition that glows after ignition and is essentially wind-proof and weather-proof. Used for lighting fuses. 

A purple flame, a relative newcomer to pyrotechnics, can be achieved by the correct balance of red and blue emitters. The additive blending of these two colors produces a perception of purple by an observer. Several comprehensive review articles on purple flames have recently been published [131. 

First-fire. In pyrotechnic devices, an easily ignitabic compn between the fuse (or other igniter) and the main charge. The main charge is not easily ignited by die fuse alone. The same as Igniter Composition (See in Article on Pyrotechnics)... 

Cf. Davis, article entitled Pyrotechnic Snakes, in J. Chem. Education, 17, 268-270 (1940). 

Explosive substances and articles in Class 1 are assigned to one of six divisions, depending on the type of hazard. An explosive substance is defined as a solid or liquid substance (or mixtures of substances) that is in itself capable by a chemical reaction of producing gas at such a temperature and pressure and at such a speed as to cause damage to the surroundings. Pyrotechnic substances are included even when they do not evolve gases. 

This comprises substances, mixtures and articles which are manufactured with a view to producing a practical, explosive or pyrotechnic effect. 

Fireworks are an aesthetic arrangement of various fire producing elements. People call these phenomena and often the articles which produce these phenomena "fireworks . The word pyrotechnics originated from Greek and is synonymous with fireworks , but it has a wider scope than fireworks" in that they are not only produced to be admired and enjoyed but they are also made for military and industrial use. 

Next to roman candles, these are perhaps the moSt popular article of the pyrotechnical craft and on good authority, seem to have antedated the candle. So much has been written about sky rockets that any general description would be superfluous. The French, in pnitis-ular. have left a moA detailed history, aomelnnes amusing in view ol present day condsdons, regarding its manU" failure. 

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