Skip to main content

Classification of Dusts Relative to Electrical Equipment in Class II Hazardous Locations (1982) / Chapter Skim
Currently Skimming:

Chapter 4: Classification of Various Dusts
Pages 15-22

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 15...
... The last column of Table 4-1 lists classifications according to the recommended scheme described in Chapter 3 and illustrated in Figure 3-2. It is recognized that the materials tabulated in Table 4-1 do not include all of the potentially hazardous dusts that might be found in industry, particularly in the future.
Read the entire page →
From page 16...
... Agricultural Dusts Alfalt'a meal 0.1 1.2'' 66 1,100 460 200 0.32 0.100 G G Almond shell 0.9 0.3 72 800 440 200 0.08 0.065 G G Apricot pit 1.6 1.2 94 2,500 440 230 0.08 0.035 G G Cellulose 1.0 2.8 119 4,500 480 270 0.080 0.055 G G Cellulose, alpha 2.7 4.4 106 8,000 410 300 0.040 0.045 G G Cellulose, flock, f~ne cut i.S 3.8 103 7,000 420 260 0.035 0.055 G G Cereal grass <0.1 0.1 52 500 550 220 0.80 0.20 G d C~herry pit 2.0 2.2 104 4,000 430 220 0.08 0.03 G G Ctnnarnon 2.5 2.3 114 3,900 440 230 0.03 0.06 G G Citrus peel 1.1 0.96 5 I 1,200 490 270 0.06 0.06 G G Coca bean shell 3.6 3.8t 69 3,300 470 370 0.03 0.04 G G Cocoa natural. 19'7, t'at 0.5 1.1< 53 1,200 510 240 0.10 0.075 G G Coconut shell 2.0 2.1 97 4,200 470 220 0.06 0.035 G G Coft'ee.
Read the entire page →
From page 17...
... {) 34; 0.02U 0.035 0.035 0.030 0.030 0.~5 0.015 0.025 0.030 0.050 0.050 0.015 0.020 0.020 0.085 0.015 0.025 0.035 0.025 0.025 0.020 0.025 0.020 0.030 (}.025 0.015 0.030 NEC Classincalion 1981 G G G G G G 17 17 F F'' 17 F F 1; F 17 F 17 F F 1: 1' G G G G (; (; (; G G G G G G G G G G G G G G G G G G G G G (; Recommen~d G G G G G G G14 GtA G G G G GIR GtA GIR G G GIA GIR G G GIA (; (; (, t.
Read the entire page →
From page 18...
... NEC Ignition Exploit Explosion Pressure Ignition Explosion Classification Sensi- sion Pressureb Riseb Cloud Layer Energy Concentration tivity Severity (psi")
Read the entire page →
From page 19...
... 0.5 8. Peslidde$ Benzelhonium chloride 4.4 Bis (2-hydroxy-5-chlo[ophonyl} me~ane ~~ 2~ (307 com busliblc, 10~ inerl)
Read the entire page →
From page 21...
... Melarnu~e formaldehyde, unfilled laminating type, no plasticizer Urea formaldehyde molding compound, Grade 11, fine Urea formaldehyde-phenol forrnaddehyde molding compound, wood flour filler (group IV. Epoxy Resins Epoxy, no catalyst, modifier, Or additives Epoxy-bisphenol A mixture Group V
Read the entire page →
From page 22...
... Department of Interior, Bureau of Mines: R1 5753,The Explosibility of Agricultural Dusts; R1 6S16, Explosibility of Metal Powders; R1 5971, Explosibility of Dusts Used in the Plastics Industry; R1 6597, Explosibility of Carbonaceous Dusts; R1 7132, Dust Explosibility of Chemicals, Drugs, Dyes and Pesticides; and R1 7208, Explosibility of Miscellaneous Dusts. The data given tor ignition temperatures, minimum cloud ignition energy, and minimum explosion concentration were the minimum values for the type of sample tested.
Read the entire page →

Key Terms

  • cloud layer
  • energy concentration
  • electrical code
  • layer energy
  • molding compound

  • explosion pressure
  • cloud min
  • eth eth
  • formaldehyde molding
  • flour filler

  • wood flour
  • molding compounds
  • resins phenol
  • fiber mixture
  • fire protection

  • alcohol derivative
  • ignition explosion
  • allyl alcohol
  • temperature cloud
  • stearic acid

  • protection handbook
  • life retardant
  • plastics industry
  • phthalate mixture
  • miscellaneous dusts

  • zinc salt
  • ignition exploit
  • minimum values
  • minimum cloud
  • amino resins


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.