Which agency governs the construction, maintenance, and transport of portable gas cylinders used in the oxyfuel process?

• A. Compressed Gas Association (CGA)
• B. Occupational Safety and Health Administration (OSHA)
• C. National Institute for Occupational Safety and Health (NIOSH)
• D. United States Department of Transportation (DOT)

Answer: (D)

Transport safety for portable gas cylinders is regulated by the Department of Transportation. The DOT’s Hazardous Materials Regulations set the rules for how cylinders must be designed to withstand transport, how they are labeled and documented, how they’re loaded and secured, and how they’re handled during movement between locations. They also require periodic requalification and testing of cylinders as part of moving hazardous materials, which is essential in oxyfuel operations that use flammable gases. While industry groups like the Compressed Gas Association provide recommended, industry-wide standards for cylinder design and maintenance, those are voluntary guidelines; enforcement and overall regulatory authority lie with the DOT. OSHA and NIOSH focus on workplace safety within the facility, not the regulations governing transporting cylinders, and they do not regulate transport itself.