Safety Analysis

Now that you have a good background in systems safety, let's put all that newfound knowledge to good use and do a complete analysis of a system. Pick any system you are somewhat familiar with. It can be something you work with on a daily basis or it can be something you just read that interests you. The choice is yours. 

Provide a brief synopsis of your system and what it is designed to do. Then provide a complete analysis of the system from a systems safety standpoint. You can analyze the entire system if it isn't too big or you can do a subsystem, which is a part of the whole. Your analysis should include the following:

• A PHA
• Impact of each item in the PHA (i.e., what can happen if it is not mitigated)
• Risk Analysis Matrix
• Pick at least two of the items identified in your PHA and use any of the tools we have covered to analyze them.
• A detailed report to your boss: In this report be sure to provide your operating assumptions and recommendations for how to correct what you found.
• Thinking in terms of the two items you picked, tell how often they should be reevaluated throughout the life cycle of the system and why.
• Realize this isn't just a narrative. Your analysis should include the applicable charts, such as a PHA, PHL, or fault tree for example. You must have some of the actual diagrams you used to make your assumptions.

Tools Include 

Preliminary Hazard Analysis

functional hazard analysis

Failure Mode and Effects Analysis

Fault Hazard Analysis

Subsystem Hazard Analysis

System Hazard Analysis

Operating and Support Hazard Analysis

Process Hazard Analysis

Fault Tree Analysis

Management Oversight Risk Tree Analysis

 Software Hazard Analysis

Sneak Circuit Analysis

Barrier Analysis

Management Oversight Risk Tree Analysis