Pressurized Heavy Water Reactors (PHWRs) are currently in operation across six Member States (MSs). As in all MSs, the demand for rigorous and accurate safety assessments has grown significantly driven by the need to comply with more stringent requirements, addressing emerging issues and demonstrating sufficient margins throughout the life of the plants. Combined with increased computer capabilities, this has led to the development and adoption of sophisticated analytical tools, methods, and integrated simulation platforms for PHWR analysis.

The IAEA has actively supported PHWR MSs in enhancing computational tools and methods while promoting information exchange on the topic through a series of meetings, technical publications, and collaborative research projects and benchmarks. In line with this objective, the IAEA is organizing a technical meeting to share experience and transfer knowledge on the advances and future trends in Analytical Tools and Methods for PHWR analysis, and to prepare an IAEA publication on the topic.

The meeting addresses the advances in analytical tools and methods for design, operation and safety analysis of PHWR for all plant states. More specifically, the topics planned to be covered in the meeting include:

? Advances in computational tools and integrated simulation platforms for PHWRs.

? Usage of high-fidelity tools, such as Computational Fluid Dynamics (CFD).

? Applications of artificial intelligence and machine learning.

? Novel methodologies and approaches, such as ROP approaches, and the application of the LBB concept and pipe break opening characteristics.

? Progress in experiments, validation, uncertainty quantification and benchmarks.

All persons wishing to participate in the event have to be designated by an IAEA Member State or should be members of organizations that have been invited to attend. In order to be designated by an IAEA Member State or invited organization, participants are requested to submit their application via the InTouch+ platform (https://intouchplus.iaea.org) to the competent national authority (Ministry of Foreign Affairs, Permanent Mission to the IAEA or National Atomic Energy Authority) or organization for onward transmission to the IAEA by 15 September 2025, following the registration procedure in InTouch+.