Multiple Protection Layers vs System Maintainability
Apply Safety Integrity Level analysis to justify the minimum number of high-quality independent protection layers rather than accumulating redundant devices.
CyberTRIZ analysis · Seveso contradiction PS027 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Business Context
Independent protection layers reduce the probability of major accidents
by providing multiple defensive barriers. Each additional layer,
however, requires inspection, testing, documentation, and maintenance
throughout its operational life.
The Contradiction
More protection layers improve resilience.
More protection layers increase maintenance complexity.
Why It Exists
Organizations frequently add protective systems without eliminating
existing hazards or simplifying process architecture.
Direction
Design simpler processes supported by independent, high-quality
protection layers rather than continuously increasing the number of
protective devices.