The Státní úřad pro jadernou bezpečnost (SÚJB) — State Office for Nuclear Safety — is the Czech Republic's central authority for nuclear safety, radiation protection, emergency preparedness, and nuclear non-proliferation and security.

Mandate

SÚJB's legal foundation is Act No. 263/2016 Coll. (the Atomic Act), which consolidated previous legislation and aligned Czech regulation with EU Council Directive 2014/87/Euratom on nuclear safety and with the Basic Safety Standards Directive 2013/59/Euratom. The Atomic Act covers:

  • Peaceful uses of nuclear energy and ionising radiation.
  • Licensing of nuclear facilities (siting, construction, commissioning, operation, decommissioning).
  • Radioactive waste management, including the planned deep geological repository.
  • Emergency preparedness and response.
  • Nuclear safeguards under the Euratom Treaty and the IAEA Comprehensive Safeguards Agreement.

Supervised facilities

Two operating nuclear power stations are supervised by SÚJB:

  • Dukovany — four VVER-440/213 units commissioned 1985-1987, operated by ČEZ.
  • Temelín — two VVER-1000/V-320 units commissioned 2000-2002, with Westinghouse fuel and a hybrid Westinghouse/Russian I&C upgrade.

ČEZ has selected Korean Hydro and Nuclear Power (KHNP) as preferred bidder for the new-build programme at Dukovany (and possibly Temelín), with SÚJB conducting pre-licensing review.

Waste and the deep repository

The Czech radioactive waste management agency SÚRAO is responsible for siting and operating storage and disposal facilities. SÚJB regulates SÚRAO and the licensee in this chain. The deep geological repository (DGR) programme is at site-selection stage, with public consultation, technical investigations and disposal-safety case work ongoing — and FAQs published on SÚJB's English-language website cover the timeline, the safety case, and the legal framework.