External visual requalifiers of DOT-approved cylinders are
required to undergo function-specific training as specified in
49 CFR § 172.704. This brochure summarizes function specific
training required for cylinder requalifiers.
DOT is committed to ensuring that information is available in appropriate alternative formats to meet the requirements of persons who have a disability. If you require an alternative version of files provided on this page, please contact PHMSA@accessibility.dot.gov