Niro Pharma Systems in conjunction with FSA, have carried out an test program involving over 100 test explosions. This research has shown conclusively that should an explosion occur during the transfer operation in an integrated system where a granulator is connected directly to a fluid bed dryer without an explosion isolation valve then, the secondary explosion pressures in the granulator can be higher than in the fluid bed. These tests have enabled Niro Pharma Systems to gain full EC type approval for a range of pressure shock resistant integrated systems and 16-bar pressure shock resistant high shear granulators. The tests showed that where the fluid bed is designed in accordance with VDI 2263 part 5, then the granulator must be able to withstand an over pressure of at least 16 bar.
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