Page 16 - Dust Explosions in the Process Industries

Contents xiii
7.5 Can clouds of the dust produce explosions at all? Yes/No
screening tests 488
7.6 Can hazardous quantities of explosible gases evolve
from the dust during heating? 490
7.6.1 The industrial situation 490
7.6.2 Laboratory tests 491
7.7 Ignition of dust deposits and layers by self-heating
or hot surfaces 493
7.7.1 The industrial situation 493
7.7.2 Laboratory tests 493
7.8 Minimum ignition temperature of dust clouds 499
7.8.1 The industrial situation 499
7.8.2 Laboratory tests 499
7.9 Minimum electric spark ignition energy of dust layers 505
7.9.1 The industrial situation 505
7.9.2 Laboratory tests 505
7.IO Minimum electric spark ignition energy of dust clouds 508
7.10.1 The industrial situation 508
7.10.2 Laboratory tests 508
7.11 Sensitivity of dust layers to mechanical impact and friction 513
7.11.1 The industrial situation 513
7.11.2 Laboratory tests 513
7.12 Sensitivity of dust clouds to ignition by metal
sparks, hot spots, or thermite flashes from accidental
mechanical impact 515
7.12.1 The industrial situation 515
7.12.2 Laboratory tests 516
7..13 Minimum explosible dust concentration 518
7.13.1 The industrial situation 518
7.13.2 Laboratory tests 519
7.14 Maximum explosion pressure at constant volume 525
7.14.1 The industrial situation 525
7.14.2 Laboratory tests 526
7.15 Maximum rate of rise of explosion pressure at a constant volume
(explosion violence) 533
7.15.1 The industrial situation 533
7.15.2 Laboratory tests 534
7.15.3 Further development of adequate test methods for dust
explosion violence assessment 535
7.16 Efficacy of explosion suppression systems 536
7.17 Maximum explosion pressure and explosion violence of hybrid
mixtures of dust and gas in air 539
7.18 Tests of dust clouds at initial pressures and temperatures other
than normal atmospheric conditions 540
7.19 Influence of oxygen content in the oxidizing gas on the ignitability
and explosibility of dust clouds 540
7.19.1 The industrial situation 540
7.19.2 Laboratory tests 541