Bypass Flexibility vs Functional Safety
Enforce automated bypass authorisation, strict time limits, and compensating safeguards to protect safety integrity during maintenance windows.
CyberTRIZ analysis · Seveso contradiction FS012 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Business Context
Temporary bypasses allow maintenance and testing to be performed without
shutting down the entire process. Every bypass, however, temporarily
reduces the level of protection provided by the Safety Instrumented
System.
The Contradiction
Greater bypass flexibility improves maintenance efficiency.
Fewer bypasses improve functional safety.
Why It Exists
Maintenance activities sometimes require protective functions to be
temporarily disabled, increasing operational exposure until normal
protection is restored.
Direction
Minimize bypass duration through strict bypass management, automated
authorization, temporary compensating measures, and improved maintenance
planning.