Application of a Qualitative Risk-Informed, Performance-Based Approach for the MARVEL Microreactor at the Idaho National Laboratory

Abstract

The Microreactor Applications Research Validation and EvaLuation (MARVEL) Project will demonstrate a new microreactor concept intended for installation and demonstration in the Idaho National Laboratory (INL) Transient Reactor Test (TREAT) facility. This paper describes the hazard evaluation process for the MARVEL project for compliance with the requirements in 10 CFR 830, “Nuclear Safety Management.”[1] The hazard evaluation follows a process similar to that outlined in Nuclear Energy Institute (NEI)-18-04, “Risk-Informed Performance-Based Technology Inclusive Guidance for Non-Light Water Reactor Licensing Basis Development.”[2] The NEI-18-04 process was adapted to fit Department of Energy (DOE) reactor regulatory requirements using a graded approach based on the MARVEL microreactor design. This approach provides reasonable assurance of meeting the requirements of 10 CFR 830 for protection of the public, workers, and environment.