["< sod > a'''fail - safe'''is a device or practice so that, in having the event that of a specific type of [ [ failure causes | failure ] ], responds or results normally in situation a way that will cause no harm, or at least minimizes harm, to other devices or to personnel. < eod > < sod > a'''fail - safe'''in engineering this is a device or practice that, in that the event of a specific type of [ [ failure causes | failure ] ], inherently responds or results in a way that will cause no or minimal harm, to all other equipment, the environment or generally to ordinary people. < eod >"]