Designing for Extreme Hazards and Accidents

The main objective of this special session is to inform the participants about the latest changes to the regulations and the engineering design practice that are being introduced in the nuclear industry to meet the challenges of substantiating a design of a plant to cope with extreme events caused by external hazards or accident conditions that go well beyond the conventional design basis.

The panelists will clarify also the difference between the Design Extension Conditions (DECs) requirements for new builds as defined by the IAEA following the full review of their Safety Guides after the Fukushima event vs. the DECs expectations for existing plants.

The panelists are world recognized experts with extensive experience in the design, research and operation of nuclear installations. Their presentations will cover their work and results on designing structures, systems and components (SSCs) for extreme hazards and events/accidents performed in IAEA, OECD/NEA, WENRA, ASME, as well in universities and research laboratories.

Date: Tuesday August 6, 2019

Time: 1:15 p.m. - 3:00 p.m.

ChairAndrei Blahoianu, Nuclear Engineering Consultant, Canada


1. Safety Expectation for New Nuclear Power Plants: IAEA Perspective
Greg Rzentkowski, IAEA

2. Risk Informed Design Approach for Nuclear Containment
Nawal Prinja, School of Engineering at Aberdeen University, UK

3. Modelling Realistic Response of Nuclear Installations under Beyond Design Basis or Design Extension Earthquake
Pierre Labbe, Ecole Spéciale des Travaux Publics (Paris-East University), France

4. Proposal to Introduce Design Extension Loading Cases and Corresponding Acceptance Criteria in the ASME Code
Neb Orbovic, CNSC, Canada