What containment method involves using a larger container to hold a leaking smaller one?

The method of containment that involves using a larger container to hold a leaking smaller one is known as over packing. This technique is particularly useful in situations where hazardous materials are leaking from their original container. By placing the damaged container into a larger one, the risk of the hazardous substance escaping into the environment is minimized. The larger container often provides an additional layer of safety and containment.

In the over packing process, it is vital to ensure that the larger container is compatible with the material being contained and that it is appropriately sealed to prevent leakage. This method is proactive and can help avoid further incidents, protecting both personnel and the environment from exposure to hazardous substances.

Other options, while relevant in various contexts of hazardous material management, do not specifically refer to the action of enclosing a leaking container within another container for containment purposes. Patching generally refers to repairing a breach, sealing implies closing off or stopping leaks without the use of another container, and encapsulation involves covering a surface with a protective layer, which is not pertinent in the context of directly managing leaking containers.