a5c-ai Cost of Quality Analyzer
Overview
The Cost of Quality Analyzer skill provides comprehensive capabilities for analyzing and tracking quality costs. It supports PAF (Prevention, Appraisal, Failure) model analysis, hidden factory cost identification, and quality investment ROI calculation.
Capabilities
- Prevention cost identification
- Appraisal cost tracking
- Internal failure cost calculation
- External failure cost estimation
- COQ ratio analysis
- Hidden factory costs
- Quality investment ROI
- Improvement prioritization
Used By Processes
- QMS-004: Cost of Quality Analysis
- QMS-002: TQM Program Development
- CI-001: Operational Excellence Program Design
Tools and Libraries
- Cost accounting systems
- Quality cost databases
- Financial analysis tools
- Reporting dashboards
Usage
skill: cost-of-quality-analyzer
inputs:
period: "2025-Q4"
revenue: 10000000
cost_data:
prevention:
- category: "Training"
amount: 50000
- category: "Quality planning"
amount: 30000
- category: "Process control"
amount: 40000
appraisal:
- category: "Inspection"
amount: 80000
- category: "Testing"
amount: 60000
- category: "Audits"
amount: 20000
internal_failure:
- category: "Scrap"
amount: 100000
- category: "Rework"
amount: 75000
- category: "Downtime"
amount: 50000
external_failure:
- category: "Warranty"
amount: 120000
- category: "Returns"
amount: 40000
- category: "Complaints"
amount: 25000
outputs:
- coq_summary
- coq_ratios
- trend_analysis
- pareto_analysis
- improvement_opportunities
- roi_projections
Cost of Quality Categories
Prevention Costs (Investing to prevent defects)
- Quality planning
- Training and education
- Process control
- Supplier evaluation
- Design reviews
- Preventive maintenance
Appraisal Costs (Detecting defects)
- Incoming inspection
- In-process inspection
- Final inspection
- Testing and calibration
- Quality audits
- Supplier monitoring
Internal Failure Costs (Defects found before shipping)
- Scrap
- Rework
- Re-inspection
- Downtime
- Failure analysis
- Yield losses
External Failure Costs (Defects found by customers)
- Warranty claims
- Returns and replacements
- Complaint handling
- Product liability
- Recalls
- Lost sales/reputation
COQ Benchmarks
| Metric | World Class | Average | Poor |
|---|---|---|---|
| COQ as % of Revenue | 2-4% | 10-15% | 20-25% |
| Prevention % of COQ | 20-30% | 10-15% | < 5% |
| Failure % of COQ | 30-40% | 60-70% | > 80% |
Optimal COQ Model
Total COQ = Prevention + Appraisal + Failure
As Prevention increases:
- Appraisal stays relatively flat
- Failure costs decrease significantly
- Total COQ decreases until optimal point
Hidden Factory Costs
Often unmeasured costs:
- Expediting
- Sorting
- Engineering changes
- Excess inventory
- Extended cycle times
- Customer service escalations
Integration Points
- ERP financial modules
- Quality Management Systems
- Cost accounting systems
- Business intelligence tools