Hydrostatic Testing and Cylinder Maintenance

DOT and TC Requirements
Pursuant to regulations specified in the United States by the U.S. Department of Transportation (DOT) and in Canada by Transport Canada (TC), certain cylinders used for transporting hazardous materials are required to be retested, inspected and certified safe for use every 5 years. Certain other cylinders require retests and inspections according to modified schedules if certain conditions are met. For example, cylinders used exclusively for certain listed refrigerants and which are “commercially free from corroding components” and which have a corrosion-resistant external coating may only need hydrostatic retesting every
12 years(49 CFR 173.34(e)(ii)). Other listed cylinders
used exclusively for the transport of “fluorinated hydrocarbons and mixtures thereof which are commercially free from corroding components” may be given a complete external visual inspection every 5 years.
Recertification procedures and regulations are codified in the U.S. Code Of Federal Regulations (CFR), Federal Register and Title 49, Section 173.34 and Transport Canada (TC) in B339 and B340.

By law, refrigerant recovery cylinders must be tested and recertified every five years. We make the process easy, and can save you from costly penalties for using out-of-date cylinders. As a DOT (Department of Transportation) and TC (Transport Canada)- approved hydrostatic test facility, we will:

Arrange all shipping
Thoroughly test all of your cylinders with our state-of-the-art equipment
Inspect all cylinder components and perform necessary repairs
Provide you with recertification documentation

Our hydrostatic testing and refurbishment program includes:

Complete hydrostatic test with expansion tank testing
Internal and external visual inspection
Internal cleaning and drying
Dip tube and dual port valve replacement or separate single port valve replacement on certain 240# and 1000# cylinders and ton tanks
Complete paint removal and repainting in accordance with ARI Color Standards,
Guideline K and stage dryer for small cylinders
Stamping and documentation

For more information, please call 800-501-4376 or contact a Hudson representative at a location near you.