Reliability vs Investment Cost
Use criticality-tiered reliability specifications aligned with functional safety integrity levels to direct premium investment where failure consequences are highest.
CyberTRIZ analysis · GreenFieldIndustrialProjects contradiction GED008 · one of 8,235 worked contradictions published by CyberTRIZ.AI
Regulations
Business Context
Higher reliability can require better equipment, redundancy, monitoring, protective systems, stronger materials, or additional engineering. Applying maximum reliability requirements throughout the facility can significantly increase capital cost.
Green Field Industrial Projects TRIZ Resolution
Allocate reliability according to system criticality and failure consequence. Improve inherently weak functions, provide targeted monitoring and protection, and design recovery capability instead of applying premium reliability specifications uniformly.
Applicable TRIZ Principles
Principle 3 – Local Quality applies reliability investment according to criticality.
Principle 11 – Beforehand Cushioning protects critical functions against foreseeable failure.
Principle 23 – Feedback detects deterioration before functional failure occurs.
Expected Outcome
Higher critical-system reliability
Controlled capital investment
Better reliability economics
Reduced production-loss exposure
Decision Indicators
Early indicators include:
Reliability specifications are identical across critical and noncritical equipment.
Premium equipment is selected regardless of failure consequence.
Low-cost components create repeated critical failures.
Reliability improvement relies mainly on equipment duplication.
Lifecycle failure costs are absent from equipment decisions.
Monitoring these indicators helps align reliability expenditure with actual operational consequence.