Cylinder filling prefill inspection

Due to the vast diversity of exposures during the use of a compressed gas cylinder, a prefill inspection of each cylinder is a necessary precaution. This inspection identifies any damage or repairs that are required prior to filling. The following describes inspections included in the prefill inspection process. 

P-15 Filling of Industrial and Medical Nonflammable Compressed Gas Cylinders. Covers prefill inspection procedures and describes the steps necessary to ensure cylinders of air, argon, carbon dioxide, helium, nitrogen, nitrous oxide, and oxygen are filled in a manner that is safe (19 pages). 

Among the gases in the nonflammable, non-liquefled category are nitrogen, oxygen, helium, and argon. Cylinders that pass the prefill inspection and are to be filled with such gases are connected to the proper manifold. 

Acetylene cylinder filling plants should comply with NFPA 51 A, Standard for Acetylene Cylinder Charging Plants [15]. This standard provides guidance on the design, construction, and operations of these plants. All acetylene plant operations should use CGA C-13 as a reference for prefill cylinder inspection and for periodic requalification of cylinders [14]. 

AV-3 Filling of Industrial and Medical Nonflammable Compressed Gas Cylinders. Covers numerous aspects and considerations with respect to prefill inspections and filling procedures. Includes a leader s guide and study materials. Available in VHS or PAL format. (23 minutes)... 

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