A nuclear flask is a shipping container that is used to transport active nuclear materials between nuclear power station and spent fuel reprocessing facilities.
Wagon with transport cabin containing a nuclear waste flask, at Bristol
A typical SNF shipping cask mounted on a railroad car
Nuclear flask train near the Sellafield nuclear spent fuel reprocessing facility in the UK
1980s Old Dalby Test Track test against a flask in its most vulnerable position. Video footage is available on various hosting services.
A shipping container is a container with strength suitable to withstand shipment, storage, and handling. Shipping containers range from large reusable steel boxes used for intermodal shipments to the ubiquitous corrugated boxes. In the context of international shipping trade, "container" or "shipping container" is virtually synonymous with "intermodal freight container", a container designed to be moved from one mode of transport to another without unloading and reloading.
A flatcar with a 20 ft tanktainer and an open-top 20 ft container with canvas cover
Typical corrugated box (RSC)
A typical IBC.
Example of steel drum