# Physics-First Quality and Governance Renacore's quality system treats a prediction model like a piece of safety equipment: it must pass gates before it goes live and can be rolled back fast if it misbehaves. ## Three validation layers 1. **Input Data Hygiene** — reject/clean bad sensor data before it reaches the model. 2. **Prediction Core ("Golden Batch")** — the validated reference model. 3. **Logic Sanity Check** — does the output violate physical reality? If so, suppress it. ## Model Release Certificate (the gate) A model only ships if it clears: - **>85% backtest precision** - **alert flicker < 1 / hour** (no noisy oscillation) - **zero physics violations** - **explainability / RCA trace** attached This is [[AI Verification]] made operational, and it's exactly [[Where Domain Evals Matter Most]] — a generic accuracy metric is meaningless if the alert is physically impossible. ## Incident response - **Sev1**: rollback within **15 min**. - **Sev2**: restart within **1 hr**. - Digital-twin **staging** environment + **FMEA** before production. ## Standards posture (diligence flag) **Aligned to — not certified against —** ISO 9001:2015, ISO 14224, ISO/IEC 27001, ISO 31000. Treat "alignment" as intent, not assurance; certification timelines are a real procurement risk. See [[Renacore/Investment Snapshot]]. ## Related - [[Renacore MOC]] - [[AI Verification]] - [[Where Domain Evals Matter Most]] - [[Renacore/Security and Zero Trust]] - [[Bespoke Engineering in Industrial AI]]