The last fuel delivery arrived at the reactor in January 1971. The first agreement entered into force on 30 December 1960 and the fourth on 27 November 1969. The contract between General Atomics and the government of Finland was signed on and the fuel for the reactor was purchased through four Supply Agreements between the IAEA, the Finnish and US governments.

The FiR 1 reactor was purchased through an agreement between the International Atomic Energy Agency (IAEA) and the government of Finland, following a request by Finland for assistance in establishing a research reactor project. FiR 1 was originally in the possession of Helsinki University of Technology (which became the Aalto University in 2010), but it was transferred to VTT Technical Research Centre of Finland following a government decision in 1971. The supplier, General Atomics, designed the Triga reactors (from Training Research Isotopes General Atomics) for use in university environments. Preparations for immediate decommissioning have been started. The reactor is now in extended shutdown, in which the technical maintenance and security surveillance of the reactor and the premises continue at the same level as during normal use. By Markus Airila, Iiro Auterinen, Petri Kotiluoto, Timo Vanttola and Olli Vilkamo.įinland's only research reactor, FiR 1, a 250kW Triga Mk II open-tank reactor, was operated from March 1962 until it closed permanently in June 2015.

Now the era of the Finnish research reactor has come to its end. Finland’s FiR 1 reactor served as hub for training and research for over 50 years, educating an early generation of nuclear energy professionals.

Nuke them till they glow