ABWR Working Group (ABWRWG)

The ABWR Working Group (ABWRWG) was approved by MDEP Policy Group in September 2013. The group's work is focused on the safety reviews of General Electric (GE)-Hitachi, Hitachi-GE and Toshiba ABWR designs.

The national regulatory authorities participating in the ABWRWG include:

  • Japan
  • Sweden
  • the United Kingdom
  • the United States

The ABWRWG's main objectives are as follows:

  • to leverage resources and ensure that the ABWR design reviews remain safety-focused;
  • to exchange information about their safety reviews in the areas of Fukushima lessons learned enhancements, instrumentation and control, severe accidents, probabilistic risk assessment, radiation protection, design basis accidents and safety system diversification, taking into account design differences among countries and differences in licensing processes.

The ABWRWG reports the status of its activities three times a year at the MDEP Steering Technical Committee (STC) meetings.

Key stakeholders with whom the working group interacts are GE-Hitachi, Hitachi-GE, Toshiba and utilities pursuing licensing and construction of the ABWR.


For more information, see the MDEP Annual Report 2017-2018.

Programme plan

2017-2018 Programme Plan


CP-ABWRWG-01: Common Position Addressing Issues Related to the Fukushima Daiichi Nuclear Power Plant Accident

Last reviewed: 28 November 2017