When storing barreled oil in the open air, how should the stacker operator put the oil drums?

The correct choice for storing barreled oil in the open air is to place the oil drums on their sides. This method helps prevent the collection of water or contaminants inside the drum, which could occur if they are stored upright. When drums are laid on their side, there is also a reduced risk of damage from wind or other environmental factors, as they are less likely to roll away.

Storing drums upright may lead to issues such as leaking if the drum’s lid is not adequately sealed or if it is damaged, potentially resulting in spills that could be hazardous to the environment. Placing them in a crate could provide some structural support but might not be necessary for every situation and could take up more space than needed. Utilizing a pallet is often a good practice for ease of handling and movement, but it wouldn't address the specific protective needs associated with open-air storage, particularly related to water accumulation and exposure to elements. Therefore, laying the drums on their sides is the most effective method in this case.