Turning up the heat at the High Temperature Engineering Test Reactor: earlier this year a reactor coolant outlet temperature of 950 [degrees]C was achieved at the High Temperature Engineering Test Reactor (HTTR) in Japan--a world first, and potentially an important step towards a nuclear fuelled hydrogen economy

Modern Power Systems, August, 2004

The HTTR (High Temperature Engineering Test Reactor), with a thermal power of 30 MW, is a research facility constructed by the Japan Atomic Energy Research Institute (JAERI) for development of high temperature gas-cooled reactor (HTGR) technology and nuclear heat utilisation technology as well as for irradiation of materials under high temperature conditions. The first criticality of the HTTR was attained on 10 November 1998. The full power of 30 MW and a reactor outlet coolant temperature of 850[degrees]C were achieved on 7 December 2001. Rated power operation and safety demonstration tests started in FY2002.

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High temperature programme

JAERI embarked on a programme of high temperature test...