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.
An acetylene cylinder with 360 cu. ft. can supply 36 cubic feet per hour (CFH) with intermittent use and only 24 CFH in continuous use. This makes manifolding of acetylene cylinders a must in heavy-duty applications. Any regulator you use with acetylene must have a 15-PSIG red-line gauge. Regulators that have the acetylene and other fuel gas No. 510 CGA inlet connection but don't have the 15-PSIG red-line gauge must be marked not for use with acetylene..