NUBIKI Nuclear Safety Research Institute Ltd.

Their core work

NUBIKI is a Budapest-based private SME that conducts technical nuclear safety research, specializing in the analytical methods used to assess and verify the safety of nuclear power plants. Their work covers the full spectrum of nuclear safety methodology: probabilistic safety analysis (PSA), deterministic safety analysis (DSA), severe accident management, and human factors engineering. In practice, this means they contribute to international benchmark exercises and R&D consortia where nuclear safety practices are tested, validated, and compared across European institutions. They represent a rare combination — a private company with research-institute depth in nuclear safety analysis, operating in a field otherwise dominated by large national laboratories and utilities.

What they specialise in

How they've shifted over time

NUBIKI's earliest H2020 work (IVMR, 2015–2019) was tightly focused on a specific physical phenomenon: what happens to nuclear fuel during a severe accident and whether melt can be retained and cooled inside the reactor vessel. This is highly specialized thermal-hydraulic and accident-progression research. By 2020, their focus broadened considerably — BESEP shifted them into systematic safety engineering methodology, covering PSA, DSA, safety margins, requirements verification, and human factors across the full safety case framework. The trajectory is from narrow severe-accident physics toward comprehensive nuclear safety methodology, which typically signals growth in regulatory and safety-case consulting capability.

NUBIKI is moving from single-phenomenon severe accident research toward full-spectrum nuclear safety methodology, positioning them as a broader analytical partner for safety case development, regulatory benchmarking, and multi-method plant assessment.

How they like to work

NUBIKI has participated in both projects as a consortium member, never as coordinator — consistent with a specialist that brings focused technical expertise to larger, multi-institutional programs rather than leading them. With 24 unique partners across 14 countries from just 2 projects, they clearly operate within large pan-European consortia, which is typical of nuclear safety research where regulatory diversity and national expertise are both required. This makes them a reliable specialist contributor but not yet a tested project leader.

24 unique partners across 14 countries from only 2 projects, reflecting the large, internationally diverse consortia that characterize European nuclear safety R&D. Their network almost certainly includes nuclear research institutes, utilities, and regulatory bodies across the EU and beyond.

What sets them apart

NUBIKI is one of very few private SMEs in Hungary dedicated exclusively to nuclear safety research at a technical depth comparable to national laboratories — combining PSA, DSA, severe accident analysis, and human factors in a single small organization. Their back-to-back participation in IVMR and BESEP, both peer-reviewed international benchmarks, signals recognized credibility within the European nuclear safety community rather than peripheral involvement. For consortium builders who need Eastern European nuclear safety expertise without the overhead of a national institute, NUBIKI fills a specific and hard-to-replace niche.

Highlights from their portfolio

• BESEP
  NUBIKI's largest project by far (EUR 324,275 EC contribution), covering a comprehensive benchmark of safety engineering practices — PSA, DSA, human factors, and safety margins — making it the clearest evidence of their full analytical capability.
• IVMR
  An early severe accident management project focused on in-vessel melt retention for existing and future NPPs, demonstrating NUBIKI's roots in reactor-physics-level nuclear safety research before their methodology broadened.