Cause-consequence analysis of a generic space station computer system

The application of a cause-consequence analysis technique is reviewed in order to summarize the safety concerns and proposed safeguards for a generic space station computer system. The cause-consequence diagram presents a summary of causal factors for the initiating event. The diagram also identifies the inherent safety features of the computer system (both hardware and software) that preclude unwanted command and control functions. Additional safeguards needed to prevent or minimize the occurrence of safety critical hazards are shown in the event tree portion of the diagram. A complex safety analysis of a computer system application is summarized for management review