35.3.3. IEC 61508 – Functional Safety of Electrical/Electronic/Programmable Systems

Try these first

1. 1.

   What does IEC stand for in IEC 61508?

   Hint

   Think about the organization that sets electrical standards.

2. 2.

   What is the highest Safety Integrity Level (SIL)?

   Hint

   Recall that SIL levels go from 1 to 4, ranking from least to most stringent.

3. 3.

   What is the main focus of IEC 61508?

   • Mechanical Engineering
   • Functional Safety
   • Software Development

   Hint

   Think about the area related to safety management.

4. 4.

   True or False: Verification and Validation are essentially the same processes.

   • True
   • False

   Hint

   Consider what each process is confirming.

5. 5.

   Provide a detailed example of implementing IEC 61508 in an automation project, outlining the necessary steps from risk analysis to verification.

   Hint

   Think about how each step builds on the previous one.

6. 6.

   Analyze a case where failure to meet the required SIL resulted in an accident. Describe how the situation could have been mitigated.

   Hint

   Reflect on the importance of regulations in safety outcomes.