NPGA Requalifier Identification Number (RIN) Program
Companies that re-qualify propane cylinders by visual inspection may be scheduled to renew their Requalifier Identification Number (RIN), a certificate that was first issued by the Department of Transportation (DOT) in 2003.DOT rules require all facilities that re-qualify cylinders to obtain a RIN through its Office of Hazardous Material Safety. These identification numbers are typically valid for five years, after which they need to be renewed in the same manner as the original application.
Please see the following links for more information:
