SHOGUN FIREWORKS BLOG
It is not clear in thse tests that there is perforation of the plate.I cannot see any holes.Under the UN Manual of Tests and Criteria detonation giving it a 1.1 rating requires there to be perforation or fragmentation of the steel witness plate.Also the sequential explosions indicate that a detonation wave was not propagated.Anthony LealandFirework Professionals LtdNew Zealand
For Series 6 Type A and B, the plates do not need to be perforated. For Type A, a mass explosion indicates a Division 1.1 finding. Evidence includes:a. A crater at the test site, b. Damge to the witness plate beneath the packagec. Measurement of a blastd. Disruption and scattering of the confining material. For Type B, a mass explosion indicates a Division 1.1 finding. Evidence includes:a. A crater at the test site larger than that given by a single packageb. Damge to the witness plate beneath the stack which is appreciably greater than that from a single packagec. Measurement of a blast which significantly exceeds that from a single packaged. Violent disruption and scattering of most of the confining material. You may be thinking of the Type C test, where if there are any perforations to the 3 witness screens erected in each three quadrants 4m from the packages, the finding will be Division 1.2.
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