Design Specification 2 : The written requirements for a system, software or hardware used to define its detailed attributes allowing a producer to interpret and produce goods, systems or services to meet these requirements
Safety 2 Safety S2S - A Gateway for Plant and Process Safety, The European Web Portal for Process Safety, USA 2003. http://www.safety-s2s.eu/modules.php?name=s2s_wp4& idpart=4&op=v&letter=all, (IndS - Amer) {458}