System safety attempts to
A make changes as a result of operational experience with the system.
B make changes in order to restore the system into operation after the system shuts down.
C make changes when the system engineer realizes that there is a need to do so.
D identify potential hazards before the system is designed.
The correct answer and explanation is:
The correct answer is D: identify potential hazards before the system is designed.
System safety is a proactive approach in engineering that focuses on identifying potential hazards early in the design process and implementing measures to mitigate those risks. This process ensures that the system can operate without causing harm to users, operators, or the environment. By addressing safety concerns before the system is built or deployed, engineers can design with safety in mind, avoiding costly redesigns or fixes later on.
The goal of system safety is to assess risks and incorporate safeguards into the system’s design, operation, and maintenance. Identifying hazards early allows engineers to implement safety measures such as fail-safe mechanisms, redundant systems, or proper safety protocols. This approach is more effective and less costly than making changes after the system is already in operation.
For example, in designing an aircraft, engineers assess potential risks related to flight control systems, fuel management, and emergency protocols long before the aircraft is built. They may include features like backup power systems or warning lights to address these hazards. If safety concerns were only addressed after the system was operational, there would be much greater risk to human life and financial resources.
Safety is not about fixing problems after they arise, but about systematically preventing them from occurring in the first place. This approach reduces the likelihood of accidents and enhances the overall reliability and performance of the system, ensuring that it meets both operational and safety standards throughout its lifecycle.