Page 765 - Dust Explosions in the Process Industries
P. 765
718 Index
Urd venting theory, 464465 large silos, 435438
U.S. Bureau of Mines (USBM) others, 45 1452,627
20 liter vessel, 308,520-521,532 pneumatic pipelines, 443-444
circuit, 510 slender silos, 438-443
drop hammer tests, 514 probabilistic nature of problem, 465469
explosible dust concentration criterion and, procedures, 452457
minimum, 308 Ventex valves, 78, 624, 625
flammability test, 495,496 Venting, 84-101
furnace, 425,502,503 defining, 84-85
ignitability and explosibility studies, 473, 637 explosion, 626
laboratory test methods, 685, 702-703 hazards, 92, 93
spark ignition tests blast effects, 98, 99-101
for dust clouds, 508-509 unacceptabilityof, 92,93, 122
in dust layers, 505 methods
test data applicability,685-703 flame free, 122
quenching tube, 97-98, 122
vent covers, 87-92
Vacuum cleaners vent ducts, 93-97
explosion-proof, 112-1 13, 114 principle of, basic, 85
protection selection, 132 processes, 84
Valves quenching tube, 97-98
fast-closing, 78-81 reaction forces and blast effects, 98, 99-101
Ventex, 78, 624, 625 research, 626-630
r7an der Waals forces, 202,207, 234 theories, 458-465
Vent covers, 87-92 concludingremarks, 465
bursting panels, 88-90 Gruber et al., 463-464
clips to hold, 88 Heinrich and Kowall, 460462,463
hinged explosion doors, 90,91, 92 introduction,458-460
reversible, 90, 91, 92, 93 Maisey, 460
Vent ducts, 93-97, 629 Nagy and Verakis, 463
Vent sizing Nomura and Tanaka, 462463
area, 85-87,626 Rust, 437,450,462
current developments Swift, 464
bag filters, 454 Ural, 464-465
basic approach, 452453 thermal radiation effects, 629
concludingremarks, 456457 Venting system in coal grinding plant, 109-111
cyclones, 454 Verein deutscher Ingenieure (VDI), 445
elongated enclosures, 455 bag filters experiments and, 447,448,450,451
intermediate enclosures, 454 drop hammer test, 514
large empty enclosures, 453 dust cloud generation, 442, 632
large slender enclosures, 453 explosion pressure guidelines, 452
limitations of, 452-453 flammability test and,semiquantitative,493
mills, 455 nomographs, 43I, 432
NFPA scaling procedure, 455456 pressurized bottles, dust discharge from, 442
other shapes and dusts, 4.55456 recommendations,443,444
small slender enclosures, 453-454 standards, 141
European and US. methods, 431434 symposiums,582
modified Donat method, 434 vent sizing, 86, 87,437,444,453,454,455
nomograph, 431433 vented dust explosions, 446, 461, 630
Norwegian method, 434, 438 venting code, 644
Radandt scaling law, 434,437438,441-442 Volatile flame type, 268
Swedish method, 433,438
vent ratio, 431,437
full scale experiments,435452 Weiss-Longwell criterion, 236
bag filters, 447-451 Wheat flourldust experiments, 357, 358, 370,436,
cyclones, 444-447 437,444
