APR1400 Working Group (APR1400WG)

The MDEP APR1400 Working Group (APR1400WG) was approved by the MDEP Policy Group in May 2012. The group's work was focused on the safety reviews, construction, commissioning, and early phase operations for Korea Hydro & Nuclear Power's APR-1400 design. The group completed its programme plan and closed its activities on 31 December 2021.

The following national regulatory authorities participated in the APR1400WG:

  • Republic of Korea (KINS)
  • United Arab Emirates (FANR)
  • United States (NRC)
Technical expert subgroups met to discuss the areas of long term cooling, digital I&C, construction oversight, probabilistic safety assessment and severe accidents, taking into account design differences among countries and differences in licensing processes. The working group also discussed issues related to the Fukushima accident lessons learned. A key concept of co-operation in MDEP was to make each regulator stronger in its reviews while at the same time recognizing the sovereign rights and responsibilities of national regulatory authorities in licensing new reactors in their countries. Consult the ARP1400WG Closure report for more details of the group's work.

Key stakeholders with whom the ARP1400WG interacted routinely included KHNP, KEPCO (Korea), and ENEC (UAE) pursing licensing and construction of the APR1400WG.


For more information, see the MDEP Annual Report: 2018-2019.

Closure Report

APR1400 Working Group Closure Report 2012-2021

Programme plan

2020-2021 Programme Plan


Technical Reports

Common Positions

Last reviewed: 23 February 2022