Click here to read the first entry in this blog series (What is SIL compliance?)

Click here to read the second entry in this blog series (How is SIL Used?)

As we now know, a Safety Integrity Level (SIL) can only be given to a product that meets complete compliance.  So to improve your SIL, you must improve one of the three compliance requirements: 

1. Improve SIL Capability
2. Improve Architectural Constraints
3. Improve PFDavg

Improve SIL Capability

• Improve effectiveness of internal quality management

Improve Architectural Constraints

• 1oo2
• 2oo3
• Change your Hardware Fault Tolerance

Improve PFDavg

• Decrease Proof test interval
• Decrease Mission time
• Change the architecture