Tunisian's news agency Agence Tunis Afrique Press (TAP) reported that 'Units of the National Guard and the Army in Kasserine seized four Kalashnikov rifles and dismantled three explosible
belts at the end of the OM Dhfa's (Haidra) proactive security operation on Monday.'
Helix dispensers are designed and produced in line with the safety standards of the International Electrotechnical Commission and conform to the more comprehensive Atmosphere Explosible
Helix dispensers are designed and manufactured in line with the safety standards of the International Electrotechnical Commission and conform to the more comprehensive Atmosphere Explosible
Combustible Dust Classifications Dust Explosion Kst Characteristic Class St 0 0 Not explosible
St 1 <200 Weak to Moderately Explosible
St 3 200-300 Strongly Explosible
St 4 >300 Very Strongly Explosible
"Dust must be explosible
(flammable, combustible), it must be airborne and concentration must be within the explosible
range,' he said.
The new NFPA 652 requires the owner/operator of a facility with potentially combustible dusts to determine whether the materials that they are handling/processing are combustible or explosible
and, if so, to characterize their ignition sensitivity and explosion severity properties, as required to support the dust hazard assessment (DHA).
This can be done via Dust Explosion Testing, which may include a Particle Size and Moisture Analysis, Explosion Severity Test, which tests the Kst value and Minimum Explosible
Of course, it depends on the type of dust, the minimum explosible
concentration, the height of the room, etc.
These problems became apparent when tests of cotton gin dust (CGD) using the Center for Agricultural Air Quality Engineering and Science (CAAQES) protocol found that CGD was not an explosible
* Hazard Recognition/Assessment includes determining if dust is combustible via Dust Explosion Testing, which may include Particle Size and Moisture Analysis, Explosion Severity Test which will tests the Kst value, and Minimum Explosible
Concentration (MEC)--all as mentioned earlier.
In this way, an ignition of explosible
mixture will occur and there will be an explosion and fire.
While industries handling common explosible
dusts--such as flour, custard powder, sugar, instant coffee and dried milk--were already aware of the impending deadline, those working with other materials-including malt and grain--also became subject to the changes and were forced to take immediate action to modify their facilities in time.