Class/Division and Hazard.
1.1 - Mass detonating with possible primary and secondary fragments.
1.2 - Nonmass detonating with majority of primary fragments falling within indicated minimum
1.3 - Mass fire firebrands falling within minimum distance.
1.4 - Moderate fire.
6.1 - Toxic chemical.
To recognize these hazards in firefighting operations we have fire symbols and chemical hazard
markers as shown in figure 2-9.
Figure 2-9. Fire Symbols and Chemical Hazard Markers