Secondary spill containment

Secondary spill containment means making sure that if there is a spill of something that could be harmful, like chemicals or oil, it doesn't leak out and make things even worse. It's like having a backup plan in case the first plan doesn't work.

For example, let's say you have a big tank full of oil. If the tank gets a hole in it and starts leaking oil, the oil can spread out and harm the environment. But if there is a special wall or container around the tank that is designed to catch any leaked oil, then the oil will stay inside that container and won't harm the environment.

It's like having a safety net to catch anything that falls, so it doesn't go where it's not supposed to go. It's important to have this safety net because it helps prevent accidents from getting worse and causing more damage. That way, people and animals are safe, and the environment stays clean and healthy.