Important Notice Regarding Trinity Manufactured MC 331 Tanks (REVISED) - Federal Motor Carrier Safety Administration

Your company has been identified as a MC 331 manufacture, assemble or repair facility, and this notice was sent to inform you of the Special Permit 14689 issued by the Pipeline and Hazardous Materials Safety Administration (PHMSA) to Trinity Industries. The special permit allows the continued transportation of DOT specification MC 331 tanks manufactured by Trinity Industries between 1996 and 2006, provided that the tanks are maintained in compliance with this Special Permit.

Based on the permit, the cargo tanks mentioned above are exempt from the Hazardous Material Regulations, 49 CFR 178.337-3 (g) requiring the use of pads when mounting baffle clips to the shell of the cargo tanks. The Special Permit also exempts marking requirements found in 49 CFR 172.203 (a) and 49 CFR 172.302 (c). Cargo tank facilities that inspect, test and repair MC 331 cargo tanks are strongly encouraged to review and follow procedures established by this Special Permit.

This Special Permit issued by PHMSA can be viewed via the web at http://www.phmsa.dot.gov/hazmat/regs/sp-a/special-permits/search. A search for the special permit can be performed by typing in the number 14689 or the company's name (Trinity Industries). Please forward copies of the Special Permit to all of your facility locations. If there are any questions or additional assistance needed, please contact the Federal Motor Carrier Safety Administration's Hazardous Materials Division at (202) 366-6121.

Sincerely,
John Van Steenburg
Director of Enforcement and Compliance
Department of Transportation
Federal Motor Carrier Safety Administration