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A proposal to quantify trace levels of hexachlorobenzene in fireworks
Tom Smith and Martin Guest Abstract: Hexachlorobenzene, a persistent organic pollutant, may be present in firework compositions from four sources. This paper makes a proposal to determine what “trace” quantities of hexachlorobenzene may be found in firework compositions, particularly those originating in the Far East where HCB usage was common and contamination still exists. Proposals …
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UK Pyrochemistry Course
New course date is planned in the UK this 20th/21st/22nd March 2012. This course will be run at Grafham Water Sailing Club, near Huntingdon, Cambridgeshire. The venue is easily reached and a variety of local accommodation is available. Further details are available from Davas Ltd. Each course will run from 9 am to 5 pm all three days. It …
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Dr Takeo Shimizu 1912-2011
It is with great sadness that we report the death of Dr Takeo Shimizu on 14th February 2011 at the age of 99 after a long illness. Dr Shimizu contributed more than anyone to the understanding of fireworks and their effects and contributed to many papers, some of which are available from this site. Dr …
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Pyrotechnic Chemistry Course
This course will run again in the UK on 28/29/30 March 2011 for more information click here
ShellCalc© V4.12
** NOTE – Version 5 is now available – click here A new version of the Shellcalc© program is now available. The original paper describing the program is available here. ** PLEASE NOTE ** We have occasional reports that downloading the file using IE 8 results in a file with a “.zip” extension rather than “.xlsm”. …
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UK Fireworks Surveillance for Compliance with ADR and the UN Default Classification of Fireworks
D. Chapman, S. Dennis, B. Joyce, A. C. Donalds and M. J. C. Sime Abstract: Fireworks compositions have been examined for a range of different fireworks. These compositions have been tested and measured to ascertain compliance (or otherwise) with the United Nations (UN) Default Fireworks Classification Table criteria for UN Hazard Division (HD) 1.4G classification. …
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Defining Flash Compositions: Modifications to UN Time/Pressure Test
D. Chapman and K. Howard Abstract: The Time/Pressure Test from the UN Manual of Tests and Criteria has been modified to define flash compositions in the default classification lists for fireworks in the UN Model Regulations. This modified test is known as the HSL flash composition test. This paper summarises the history of this change …
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What is a “Safety Distance” for a Shell?
Tom Smith Abstract: This paper outlines the risk assessment methodologies and calculates the risks affecting the audience from the malfunctioning of shells. Risks may arise from premature functioning of shells, from stars falling on the audience from low bursting shells, and from shells bursting in or near the audience. Two mathematical approaches are taken using …
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Blue Flame Pyrotechnic Compositions: A Concise Review
Alessandro E. Contini Abstract: A brief historical background to the development of effective pyrotechnic blue flame compositions, including strobing formulas, from the 19th century to the present day, is presented. The latest prevailing theories on blue flame generation are discussed and a list of some effective modern formulations is given. Also, don’t forget to check out …
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