Discussion
Consider the following statements about dust explosions:
1. Suspended dust, oxygen, confinement, dispersion and an ignition source must all be present.
2. Relief panels limit the pressure rise rather than preventing the explosion.
3. High material moisture increases the risk.
Which of the statements given above is or are correct?
Answer: A
Correct answer: 1 and 2 only
Statements 1 and 2 are correct: all five elements of the explosion pentagon must coincide, and relief panels limit the consequences rather than preventing the event. Statement 3 has the moisture effect backwards - damp material generates less airborne dust and is harder to ignite, so high moisture reduces the risk.
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