From Jan. 2004, the confirmation of the package of explosives by the head of the domestic transportation department is needed during the transportation of ships in Japan. Concerning some explosives, a full scale UN test is needed. Concrete cracker and two types of toy fireworks (hand held torch and smoke) were selected as a UN full scale test sample. We have conducted the 6(a) and 6(c) test which is known as a single package test and a bonfire test, respectively. The UN 6(a) test is a test on a single package to determine if there is mass explosion of the contents. The UN 6(c) test is a test performed on packages of an explosive substance or explosive articles, or unpackaged explosive articles, to determine whether there is a risk of mass explosion or a hazard from dangerous projection, radiant and/or violent burning or any other dangerous effects when involved in a fire. In the UN 6(c) test, the thermal flux effect was evaluated by a radiometer and a burning time. As a result, concrete cracker is assigned to Division 1.4, both of the toy fireworks were assigned to Division 1.4 S.
2004年1月より, 日本国内における火薬類の船舶輸送は地方運輸局長の確認が必要で, いくつかの火薬類について国連分類実証試験が必用となった。そこでコンクリート破砕器およびがん具煙火（すすき, 煙幕）を国連分類実証試験の試料として選択し, 国連6(a)試験（単一包装試験）および国連6(c)試験（外部火災試験）を実施した。国連6(a)試験は単一包装が大量爆発するか否かを決定する為の試験である。国連6(c)試験は, 火薬類の包装が火災に包まれた場合に, 大量爆発, 危険な飛散物, 激しい燃焼, その他の危険な効果が有るかどうかを決定する為の試験である。国連6(c)試験では, 熱流束を放射熱および燃焼時間で評価した。その結果, コンクリート破砕器は危険区分1.4, がん具煙火（すすき, 煙幕）はどちらも1.4 Sに分類された。
UN classification test, Toy fireworks, Concrete cracker, Single package test, Bonfire test
* Selected papers presented at the 2nd International Symposium on Energetic Materials and their Applications (ISEM 2005).
* ISEM 2005に投稿された論文です。