2.1_SMSM_201607  Originally published July 2016  Uncontrolled copy when downloaded  10 Managing Safety Risk in a System of Systems  Section 2  will describe at a high level the underlying causes of safety hazards and the means by which the  ATO manages safety risk.  The SRM process provides the framework to track a NAS change after it has been  implemented, using Safety Assurance functions like assessments to determine whether controls  and/or recommended safety requirements are performing as intended/designed. Refer to  Figure 2.2 for a depiction of the relationship between SRM and Safety Assurance.  SRM is a formalized approach to integrated system safety. It both informs decision-makers  about the potential hazards, safety risks, and ways to reduce risk associated with a particular  proposal and identifies ways to mitigate existing hazards in the NAS. The methodology is  applied to all NAS equipment, operations, and procedures to identify safety hazards and  address risk.  It is important to understand that though the ATO uses SRM as a formal safety and risk  assessment process, its philosophy is easily understood outside of the technical realm of  aviation. For example, a person performs SRM each time he or she crosses the street. The  individual identifies hazards (cars passing), analyzes and assesses the risk (potential to be  2.1.3  SRM: Proactive and Reactive Hazard and Risk Reduction  Figure 2.2: SRM / Safety Assurance Process Flow  Describe  System Identify  Hazards Analyze  Risk Assess Risk Treat Risk System  Operation Data  Acquisition Analysis Meeting  Operational/Safet Performance  Targets? No y  Implement  Safety  Requirements System Description Information  Management Analysis Assessment Problem Resolution SRM Safety Assurance Yes