ASME BPVC Section XI, Division 2: Reliability and Integrity Management (RIM) Programs for Nuclear Reactor Facilities, 2023

ASME BPVC Section XI, Division 2 – 2023 specifies comprehensive requirements for Reliability and Integrity Management (RIM) Programs used in the inservice inspection of nuclear reactor facility components. This code ensures the continued safe operation of nuclear systems through structured, data-driven evaluations of degradation, reliability, and performance monitoring.

It supports nuclear regulatory compliance by integrating probabilistic and deterministic evaluation methods, inspection protocols, and qualification processes tailored to reactor designs.

Highlights:

• Defines mandatory elements for establishing and implementing a RIM Program
• Provides methods for Degradation Mechanism Assessment (DMA) and reliability target allocation
• Outlines examination techniques, performance monitoring, and flaw acceptance criteria
• Includes Mandatory Appendices on PRA-based reliability derivation, monitoring/NDE qualification, and program documentation
• Covers RIM-specific procedures for Light Water Reactors (LWRs), High-Temperature Gas Reactors (HTGRs), Molten Salt Reactors, Fusion Machines, and more
• Supports compliance with inspection, documentation, and reporting requirements
• Coordinates with Division 1, Section XI, and Section III Class 1–3 component criteria

Who It’s For:
Nuclear engineers, reliability specialists, NDE personnel, plant operators, and regulatory bodies tasked with lifecycle integrity and inspection of nuclear systems. Enables performance-based, risk-informed maintenance planning and oversight across varying nuclear technologies.

BPVC.XI.2-2023