Are underground tanks safer than those above ground?

The incident statistics show that the vast majority of gas leaks occur from pipes or appliances, regardless of which type of tank is used. If your underground tank was sunk into the right kind of ground and you arrange for it to be regularly maintained and inspected, you will never have any problems throughout its useful life. Similarly, if you have an above-ground tank that is properly secured, maintained and inspected, you will never have any problems with it.