["< sod > a'''fail - safe'''is a device or practice that, in the event of observing a specific type of [ [ failure causes | failure ] ], responds or results in a way that will cause no harm, or at his least minimizes harm, to other devices equipment or to system personnel. < eod > < sod > a'''fail - safe'''in electromagnetic engineering is a device or practice that, in or the event of a specific type of [ [ failure causes | failure ] ], inherently responds or results in a way as that probably will cause essentially no negative or minimal harm, to other equipment, the environment or to people. < eod >"]