In devices such as "T" handles, which are commonly used to initiate the blowout of canopies, loss of function of the device may result in loss of crew. In many cases, the primer shows the dent where the firing pin struck the primer, but the primer failed to fire. These failures are commonly known as misfires or hang-fires. Primers historically are prone to failure. Current devices of this nature are initiated by the mechanical action of a firing pin against a primer.
The device will be capable of being initiated mechanically resisting initiation by EMF, RF, and EMI (electromagnetic field, radio frequency, and electromagnetic interference, respectively) and initiating in water environments and space environments. This innovation consists of a pyrotechnic initiator and piezoelectric initiation system. Quince, Asia Dutton, Maureen Hicks, Robert Burnham, Karen Piezoelectrically Initiated Pyrotechnic Igniter In the course of novel developments aiming at the 'greening' of pyrotechnics, the potential radioactive hazard should be considered as well. Radioactive impurities stemming from the Th-232 decay chain were found in many samples as well. Since no uranium was found in any of the samples, indeed, a slight enrichment of Ra-226 in coloured pyrotechnics can be observed. Radium-226 activities were in the range of 16-260 mBq g -1 (average value 81 mBq g -1 ). The highest specific activities were due to K-40 (up to 20 Bq g -1, average value 14 Bq g -1 ). In this study, we investigated the occurrence of gamma-photon-emitting radionuclides in several pyrotechnic devices. For example, the utilization of 'radiobarite' for the production of pyrotechnic ingredients can therefore cause atmospheric pollution with radium aerosols when the firework is displayed, resulting in negative health effects upon inhalation of these aerosols. Radium in such contaminated raw materials can be processed together with the barium or strontium, unless extensive purification of the ores was undertaken. Due to their chemical similarities to radium, barium and strontium ores can accumulate radium, causing a remarkable activity in these minerals. Similarly, strontium nitrate is used for red-coloured pyrotechnic effects.
Many pyrotechnic devices contain barium nitrate which is used as an oxidizer and colouring agent primarily for green-coloured fireworks. International Nuclear Information System (INIS)
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