VVER Working Group (VVERWG)

The MDEP VVER Working Group (VVERWG) was approved by MDEP Policy Group in September 2013. The group's work is focused on the safety reviews of Rosatom's VVER reactors.

The national regulatory authorities participating in the VVERWG include:

  • People's Republic of China: National Nuclear Safety Administration (NNSA)
  • Hungary: Hungarian Atomic Energy Authority (HAEA)
  • Russian Federation: Rostechnadzor
  • Türkiye: Nuclear Regulatory Authority (NDK)

The VVERWG's main objectives are as follows:

  • to leverage resources and ensure that the VVER design reviews remain safety-focused;
  • to exchange information about their safety reviews in the areas of Fukushima lessons learned enhancements, safety systems, reactor pressure vessel and primary circuit, construction oversight, severe accidents, accidents and transients, risk-informed regulatory activities, taking into account design differences among countries and differences in licensing processes.

The VVERWG provides status updates to the MDEP Management Board (MB) during its bi-annual meetings.

Key stakeholders with whom the VVERWG interacts routinely include Rosatom and utilities pursuing licensing and construction of the VVER, such as Akkuyu Power Company in Türkiye.

Accomplishments

Series of VVERWG Workshops with Industry on the construction of new VVERs in VVERWG Member Countries:
  • 1st Workshop with industry, 25 May 2018, Moscow, Russia
  • 2nd Workshop with industry, 27-29 October 2021, Virtual
  • 3rd Workshop with industry, 8-9 April 2025, Budapest, Hungary
For more information, see the 2019-2021 MDEP Annual Report.

Programme plan

2024-2025 Programme Plan

Products

Common Positions

Technical Reports


Last reviewed: 28 May 2025

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