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Facts & figures

The Gesellschaft für Anlagen- und Reaktorsicherheit (GRS) gGmbH has been Germany's central expert organisation in the field of nuclear safety since 1977.


Around 400 employees work every day at GRS. Our scientists come from a wide range of disciplines - from engineering sciences to physics, geology, chemistry and meteorology to computer science and law.

Competences and services

Our employees research and assess issues in the fields of reactor safety - including nuclear safety in fuel supply, decommissioning and dismantling, storage, disposal, physical protection, radiation protection, environment and energy

We work on around 450 projects each year. Last year, we documented the results of our work in numerous research reports and scientific publications, many of which can be found in our publications database. Another outcome of our work are our simulation codes, which can be used, for example, to represent the behaviour of nuclear power plants in the event of an accident or to model various processes developing in repositories. The calculation codes are currently used by more than 170 institutes from 40 different countries.

678 Forschungsprojekte in 2019


from 17 countries

678 Forschungsprojekte in 2019

Research reports

in the year 2021

678 Forschungsprojekte in 2019


from 48 countries use our simulation codes

678 Forschungsprojekte in 2019


in Germany: Cologne, Berlin, Braunschweig and Garching

Financing and shareholders

GRS is a non-profit organisation. It is financed mainly by carrying out publicly funded research projects and by providing expert opinions. The annual volume of orders is currently around 50 million euros.

The shareholders of GRS are the Federal Republic of Germany (46 %), the Technical Inspection Agencies (TÜV) (46 %), the State of North Rhine-Westphalia (4 %) and the Free State of Bavaria (4 %).

Committees, cooperation and collaboration

We maintain scientific cooperation with authorities, professional organisations and universities in more than 25 countries. Our experts are involved in numerous committees and working groups, including, at national level, the Reactor Safety Commission (RSK), the Nuclear Waste Management Commission (ESK) and the Commission on Radiological Protection (SSK) of the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety. At international level, GRS staff members are represented in the working groups of the International Atomic Energy Agency (IAEA), the Nuclear Energy Agency of the Organisation for Economic Co-operation and Development (OECD NEA) and the Western European Nuclear Regulators Association (WENRA). In addition, GRS is a member of the European Technical Safety Organisations Network (ETSON) of the technical safety organisations in Europe.