It is not unusual after an explosion, earthquake or shipwreck, for the normal safety
systems to stop working. Essential components of the systems are no longer in the
correct position, so data about pressure levels, leaks or fire is not displayed.
This may lead to pressure in tanks or pipes reaching dangerous levels – so dangerous
that an explosion is unavoidable. If the escaping flow of oil is not capped in time,
this may lead to an environmental disaster like the one in the Gulf of Mexico.