What is the difference in recertification period between DOT and TC cylinders after the initial certification?”

The difference in recertification periods for DOT (Department of Transportation) and TC (Transport Canada) cylinders is significant in ensuring safety and compliance with regulations. For DOT cylinders, the recertification period is set at 12 years after the initial certification. This means that once a DOT cylinder is certified, it can be used for a period of up to 12 years before it must undergo recertification to ensure it meets safety and performance standards.

In contrast, TC cylinders have a shorter recertification period of 10 years. This requirement reflects the standards that Transport Canada has implemented, aiming at maintaining safety by requiring more frequent assessments of these cylinders compared to their DOT counterparts. The 10-year recertification period for TC cylinders is intended to ensure they remain safe and reliable for use.

The key takeaway is that DOT cylinders are recertified every 12 years, while TC cylinders must be recertified every 10 years. This differentiation is important for professionals working with propane systems to understand, as it impacts maintenance schedules and regulatory compliance in both the United States and Canada.