MASSACHUSETTS INSTITUTE OF TECHNOLOGY BASE AWARD PROJECT TITLE: ''HIGH FIDELITY DIGITAL TWINS FOR BWRX-300 CRITICAL'' CONTROL NO: 21741542 THE PROPOSED WORK WILL SUPPORT THE ADVANCEMENT AND DEMONSTRATION OF NEW PREDICTIVE MAINTENANCE APPROACHES AND MODEL BASED FAULT SYSTEM DETECTION TECHNIQUES BY GEH AND GER. THE PROPOSED DIGITAL TWINS FUNDAMENTALLY ADDRESS MECHANICAL AND THERMAL FATIGUE FAILURE MODES WHICH DRIVE O&M ACTIVITIES WELL BEYOND THE SELECTED COMPONENTS IN BWRX-300, AND ARE EXTENDABLE TO ALL ADVANCED REACTORS (ARS) WHERE A FLOWING FLUID IS PRESENT.