The structural difference — visualized
Risk Retirement: EPC Stacked vs. ACM Sequential
Three comparison layers: technical risk exposure  ·  insurance burden  ·  business performance certainty.
VS EPC MODEL — RISKS STACKED SIMULTANEOUSLY ACM MODEL — DESIGNED SEQUENCE OF RISK RETIREMENT LAYER 1 · TECHNICAL RISKS Technology Risk — LIVE ENTIRE PROGRAM Engineering Risk — LIVE ENTIRE PROGRAM Procurement & Supply Risk — LIVE Construction & Field Fabrication Risk — LIVE Commissioning Risk — LIVE Operational Risk — UNMANAGED ALL LIVE AT ONCE COD — Month 42–78 Technology ○ PLANNED Engineering + FMEA ○ PLANNED DFM + Factory Manufacturing ○ PLANNED FAT — before shipment ○ PLANNED · Factory Acceptance Test Site Acceptance ○ PLANNED · Verification Protocol Operational — Managed live via CAFI Digital Triplet COD — Month 12–24 from permit issuance LAYER 2 · INSURANCE BURDEN FULL WRAP — ENTIRE PROGRAM DURATION Builder's Risk  ·  Professional Indemnity  ·  Performance Bond  ·  DSU All categories running simultaneously — full program duration PLANNED COVERAGE DIMINISHES AS EACH RISK RETIRES → Design PI Only minimal Factory Factory BR Transit + Install Asset cover + ASI warranty LAYER 3 · BUSINESS PERFORMANCE CERTAINTY PERFORMANCE UNKNOWN UNTIL COD No pre-deployment test possible · DSU insurance required Commissioning is first proof of performance at commercial scale DESIGNED TO BE VALIDATED BEFORE DEPLOYMENT FAT is planned to confirm the design spec at the factory, before shipment ASI guarantee planned from Day 1 of operations; not yet executed RISK MANAGED CONTRACTUALLY — NEVER ELIMINATED DESIGN INTENT · NO INSTRUMENT IN PLACE
Source: EPC Primer §2 · Carbotura Advanced Circular Manufacturing