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If no requal i ficati on marki ngs are found, the cyl i nder must be requal i fied wi thi n 12 years of the ori gi nal manufacture date. (Must be requal i fied by 5/2017 i n thi s 5/2017 i n thi s exampl e) Requalification Date If cyl i nder i s out of test find an approved requal i fier to requal i fy your cyl i nder. A l i st of DOT approved requal i fiers i s avai l abl e from the PHMSA websi te: .phmsa.dot.gov/ri nl ocator RIN number identifying retester/requalifier Month last requalified Year last requalified 7 14 A1 32 External Visual Test. i ndi cates cyl i nder must be requal i fied wi thi n 5 years of stamped date (Must be requal i fied by 7/2019 i n thi s exampl e) Proof Pressure Test. i ndi cates cyl i nder must be requal i fied wi thi n 7 years of stamped date (Must be requal i fied by 7/2021 i n thi s exampl e) Volumetric Test . Basi c Marki ng. Must be requal i fied wi thi n 12 years of stamped date (Must be requal i fied by 7/2026 i n thi s exampl e) Cylinders are required to be requalified, or replaced every 5-12 years depending on the cylinder type, condition, and previous qualification method (Ref. 49 CFR 180.205(d) and 180.209). The original manufacture/test date and any requalification/retest dates must be presented in a specific manner. Cylinders that are overdue for requalification must not be refilled. If p If propane tanks are manufactured to ASTM Standards and built into the truck's body making it difficult to remove, then these tanks are exempt from the DOT reinspection requirements. For more information, contact the Hazmat Info-Center: 1-[PHONE REDACTED]. Are you aware that your compressed gas cylinders must be inspected? Food Truck Operators ATTENTION.