Final answer:
The distance required for a cargo tank unloading into a storage container depends on regulations and safety considerations, which can vary, and the specifics are not provided in the reference material.
Step-by-step explanation:
The specific distance required for a cargo tank unloading into a storage container can vary widely depending on a number of factors, including but not limited to regulatory requirements, the type of cargo being handled, the size of the tank and container, and safety procedures. Unfortunately, the reference information provided does not contain a specific distance requirement for this scenario.
In practical terms, the distance is typically determined by national and international regulations, company policies, and safety considerations to mitigate hazards such as spills, fires, and explosions. For exact distances, one would need to consult with relevant shipping and handling regulations such as the International Maritime Dangerous Goods (IMDG) code, Occupation Safety and Health Administration (OSHA) guidelines, or other industry standards pertinent to the type of cargo and location.