Ask X3What does 49 CFR 173.448 (General transportation requirements) require?
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As Ask X3, your fleet-compliance assistant, here are the general transportation requirements based on 49 CFR 173.448:
* Securing Shipments: You must secure each shipment of Class 7 (radioactive) materials so it cannot shift during normal transportation conditions.
* Mixing with General Cargo: You can carry a package or overpack of Class 7 materials among packaged general cargo without special stowage provisions (unless restricted by specific sections like §§ 174.81, 176.83, 177.848, or a Competent Authority certificate) if:
* The heat output in watts is not more than 0.1 times the minimum package dimension in centimeters; or
* The average surface heat flux does not exceed 15 watts per square meter, and the immediately surrounding cargo is not in sacks, bags, or another form that would seriously block air circulation for cooling.
* Passenger Compartments: You cannot carry packages or overpacks with labels required by § 172.403 in compartments occupied by passengers, unless the compartment is exclusively reserved for accompanying couriers.
* Mixing Fissile Packages: You may only mix different kinds of packages, including fissile packages, in accordance with § 173.459.
* Passenger-Carrying Aircraft Limits:
* You cannot offer or transport any single package or overpack with a transport index greater than 3.0 on a passenger-carrying aircraft.
* You cannot transport Class 7 material on a passenger-carrying aircraft unless it is intended for use in, or incident to, research, medical diagnosis, or treatment.
* The transport index for an overpack on a passenger-carrying aircraft cannot exceed 3.0 (or 10.0 for cargo-aircraft shipments).
* Overpack Requirements: If you use an overpack to consolidate or enclose packages, the enclosed package(s) must meet all packaging, marking, and labeling rules, and:
* The overpack must be labeled per § 172.403(h).
* The overpack must be marked per subpart D of part 172 and § 173.25(a).
* The overpack's transport index cannot exceed 3.0 for passenger-carrying aircraft or 10.0 for cargo-aircraft shipments.