AADvance Safety Manual - Tuv-fs.com

AADvance Safety ManualScope Definition Hazard and risk analysis Functional and safety requirements specification System engineering Application programming System production System integration System installation and commissioning Safety system validation Operation and maintenance plan System modification DecommissioningThe definition of each life-cycle stage shall include its inputs, outputs and verificationactivities. It is not necessary to have separate stages within the lifecycle addressing eachof these elements independently; but it is important that all of these stages are coveredwithin the lifecycle. Specific items that need to be considered for each of these lifecycleelements are described in the following sub-paragraphs.The scope definition is the first step in the system life-cycle. You have to identify theboundaries of the safety-related system and provide a clear definition of its interfaceswith the process and with all third party equipment. This stage should also establish thederived requirements resulting from the intended installation environment, such asenvironmental conditions and power sources.In most cases, the client will provide this information. The system integrator mustreview this information and gain a thorough understanding of the intended application,the bounds of the system to be provided, and its intended operating conditions.Hazard and Risk AnalysisThe hazard and risk analysis has three objectives: The first objective is to determine the hazards and hazardous events of thecontrolled system for all reasonably foreseeable circumstances, including faultconditions and misuse. The second objective is to determine the event sequences that may lead to ahazardous event. The third objective is to determine the risks associated with the hazardous event.This risk analysis will provide a basic information for identifying the safety-relatedrequirements to mitigate risks.3-2 Document number 553630 Issue 7: February 2010