These girl names were at the top of their popularity during 1970-1979 (usage of 0.322%) and have become much less widespread since (usage 0.14%, down 56.5%), with the form Jolene becoming less fashionable. Shown below is an analysis of the popularity of the girl name Jolena and affiliated names.hese girl names were at the top of their popularity during 1970-1979 (usage of 0.322%) and have become much less widespread since (usage 0.14%, down 56.5%), with the form Jolene becoming less fashionable. Shown below is an analysis of the popularity of the girl name Jolena and affiliated names.
Groups further define the hazard in Class I and Class II areas. In Class I, there are Group A (Acetylene and similar gases), Group B (Hydrogen and similar gases), Group C (Ethylene and similar gases) and Group D (Propane and similar gases). Hazardous dusts and fibers (Class II & III respectively) are not treated in Article 505.
Water Extinguishers â These extinguishers are most suited for âAâ class fires. However, they cannot be used in âB,â âCâ or D class fires. In B and D class fires, the water will spread the flames. In a C class fire, the water is conductive and poses a risk of electric shock to the operator. However, the misting nozzle of a Water Mist extinguisher breaks up the stream of deionized water so that there is no conductive path back to the operator.