Department of Transportation (DOT) regulations require that each cylinder be inspected periodically internally and externally, calibrated testing equipment and test gauges be used, and every cylinder used for the storage of compressed gases such as air or oxygen be retested. The exact laws are in the Code of Federal Regulations (CFR), Part 49, subpart 173.34(e). The DOT requires each testing facility to submit to regular inspections; and each facility must maintain records of all tests performed, all persons performing the tests, and regular training records of personnel.
Oxygen systems for EMS, forcible entry, and extrication uses can be found onboard the engines, rescues, ambulances, and staff cars throughout your workplace. Within the stations, oxygen-transfilling systems are commonplace. Whatever the cylinder size or use, hydrotesting is required every five years. Even the oxygen cylinder on the cutting torch must be retested.
Air cylinders are used as our SCBA bottles, SCUBA tanks, and air-horn and air-chisel supply. All composite cylinders are retested every three years, and all aluminum and steel cylinders are retested every five years.
SCBA cylinders commonly are found in 20-, 40-, 45-, and 90-cubic-foot aluminum, steel, or composite construction. Seven- and 17.5-cubic-foot packs are also available.
Even fire extinguishers can need hydrotesting. Stored pressure extinguishers such as dry chemical ABCs need retesting every 12 years. CO2 cylinders and pressurized water extinguishers are retested every five years. The original manufacture date often is stamped into the cylinder or listed on the identification label.
General Fire Equipment offers a complete U.S. Dept. of Transportation approved hydro-test facility for recertification of all high and low pressure cylinders including SCBA and SCUBA tanks.