Technical and physical solutions are only part of the larger equation since human operators can have a huge impact on operational safety.
Research from the British regulatory body Health and Safety Executive (HSE ) has identified what it considers to be the top-ten factors involving people, primarily the ones working in the control room. Some have a technological component, but here we are focused on the human element that goes wrong.
Some of these can be solved with training, some are more technical in nature, and others are cultural. All of them should remind us that safety is more than hardware.