Functions that are related to overload protection i.e. break-away system (see [6.7]), automatic/manual protection systems (see [6.8] and [6.9]), protection against movements outside operational limitations – i.e. limit switches, physical stops (see [6.10.2]), protections against dangerous gangway movements i.e. emergency stop function (see [6.10.3]).
Source: Offshore Gangways, DNVGL-ST-0358, DNV GL, September 2017. Global Standards
function which is intended to achieve or maintain a safe state, in respect of a specific hazardous event
Note 1 to entry: This term deviates from the definition in IEC 61508–4 to reflect differences in process sector
Source: ISO/TR 12489:2013(E). Global Standards