The terms for describing advanced nuclear power plants (NPPs) need to conform to the broad, general, common understanding by the public as well as by the technical community. This publication is a revision of IAEA-TECDOC-936 incorporating developments and initiatives since 1997 in the areas of advanced, evolutionary, and innovative nuclear reactor designs, description of design development phases, inclusive of relevant safety and regulatory terminology, consistent with current IAEA safety standards and glossaries. The objective of this publication is to provide Member States with up-to-date terms for describing advanced NPPs, to draw distinctions between design phases reflecting the maturities of designs, and to clarify definitions of commonly used terms in describing advanced NPPs.

• 1. Introduction
  • 1.1. Background
  • 1.2. Objective
  • 1.3. Scope and structure
  • 1.4. Users
• 2. Terms related to design development
  • 2.1. Design development phases
  • 2.2. Organizations
  • 2.3. Reactor site and size
• 3. Advanced Reactor Design Categories
  • 3.1. Advanced design, currently in operation, under construction or licensed
  • 3.2. Evolutionary design
  • 3.3. Innovative design
  • 3.4. Passive design
  • 3.5. Proliferation related terms
  • 3.6. Time related terms
  • 3.7. Technical terms
  • 3.8. Non-technical terms in common use
• 4. Reactor Types
  • 4.1. Water cooled reactors
    • 4.1.1. Pressurized water reactors/water-water energetic reactors
    • 4.1.2. Boiling water reactors
    • 4.1.3. Pressurized heavy water reactors/heavy water reactors
    • 4.1.4. Supercritical water reactors
  • 4.2. Gas cooled reactors
    • 4.2.1. High temperature gas cooled reactors
    • 4.2.2. Modular high temperature gas cooled reactor
  • 4.3. Molten salt reactors
  • 4.4. Fast reactors
    • 4.4.1. Liquid metal cooled fast reactor
    • 4.4.2. Molten salt fast reactor
    • 4.4.3. Gas cooled fast reactor
  • 4.5. Small and medium sized or modular reactors
  • 4.6. Microreactors
  • 4.7. Accelerator driven systems
• 5. Reactor Design purpose
  • 5.1. Commercial
  • 5.2. First of a kind and nth of a kind
  • 5.3. Prototype
  • 5.4. Demonstration
  • 5.5. Experimental
• 6. Performance parameters
  • 6.1. Technical performance
  • 6.2. Economic performance
• REFERENCES
• ABBREVIATIONS
• CONTRIBUTORS TO DRAFTING AND REVIEW
• STRUCTURE OF THE IAEA NUCLEAR ENERGY SERIES