Planning of fireworks

Each symbol in the table, which is an imitation of a musical note, shows the kind of light spurce and is quite useful for planning artistic contrasts and programs of fireworks. The symbol J shows one shell. The position and the form of dots show the kinds of colour and brightness. In this book the symbol is called "firework note". 

The management of fireworks is practised under the six doctrines in planning, manufacture, transportation, display etc. as described in following paragraphs. 

Inspection. The construction of firework pieces should be planned generally for ease of inspection./An important part should be planned so that we can see the errors in assembly from the outside. Do not use paste only, irrespective of synthetic resin or other adhesives, for jointing which must stand a large explosive force, because it is difficult to inspect whether the junktion with paste is complete or not. If the paste is used, there must be a reliable method, e.g., as shown in Fig.144(B) and (C) are reliable without any inspection (E) and (F) are inspected from the outside. 

When displaying fireworks we are apt to shoot shells randomly. This is not good and must be avoided by elaborate display planning. Firework phenomena have an expence of space and time, which must be controlled under the direction of artistic movement (s,2,2). 

The drying room or drier for the fireworks must not be multi-purpose, but planned exclusively for firework use. Drying in the sun is unavoidable, but if it is placed near workrooms this tends to conduct fire from one room to another in an accident, i.e., this violates the principle of separation. Careful consideration should be given to the position for drying in the sun. 

T.Miki (founder of PL Order in Osaka), who allowed me to plan and practice the large displays of PL festival from 1964 to 1966. N.Koda (Echigo Firework Co.) gave practical help by testing my proposal in the firework art by firing shells for me. To these people I am most grateful. 

This is not the only follow-up. The fireworks disaster led to a Directorate of External Safety being established at the then Ministry of Housing, Spatial Planning and Environment, and to the installation of an Advisory Council on Hazardous Substances and a National Expertise Centre for External Safety. 

---