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30/01/15 The fourth ARCHER Newsletter was released on 30 January 2015. Read online here

21/01/15 The second ARCHER EUROCOURSE, hosted by NRG, was held in Petten from 19-20 January 2015. Click here for more info

26/11/14 The third ARCHER Newsletter was released on 26 November 2014. Read online here

28/10/14 The ARCHER final meeting was held on 21-22 Jan 2015 at NRG in Petten (NL).

27/10/14 The High Temperature Reactor (HTR) Conference was held from 27-31 October 2014 in Weihai, Shandong Province, China. Click here for more info

29/03/14 The second Newsletter was released on 28 March 2014. Read online here

Supported by

European Commission


The state-of-the-art for V/HTR is mainly provided by the former European and US HTR programmes, which were active up to the End of the 1980’s including the operation of the DRAGON, AVR and THTR, as well as of Peach Bottom and Fort Saint Vrain HTRs, in US. The invention of modular HTR, after the TMI accident in 1978, lead to a re-orientation of HTR designs towards reduced power size (200-600 MWth) and inherent decay-heat removal features based on the fission-product retention behaviour of the coated-particle fuel up to about 1600°C. Hydrogen production by thermochemical , thermoelectrical or hybrid water splitting processes as well as cogeneration of heat, power and hydrogen have been the driver to explore HTR technology in Japan and China to build the High-Temperature Test Reactor (HTTR) at JAEA and the HTR-10 at INET. Especially the HTR-10 represents the first modular HTR with its specific safety features providing valuable data for code validation and extrapolation to industrial size. The results from HTR-10 are now offered by INET for collaborative research (‘HTR-10 International Research Framework’).

Following a sequence of FP4 – FP6 HTR projects, Europe has partly recovered the knowledge of the past and continued the research on HTR key technologies concerning fuel, fuel cycle, materials, components and safety issues. With regards to the demonstration of HTR for CHP, the available technologies from the 1980’s still need to be adopted to the general technology evolution in the nuclear and conventional energy conversion sectors as well as to new applications of nuclear energy, beyond dedicated electricity generation.