[en] Japan Atomic Energy Agency (hereinafter referred to as 'JAEA') consults an assessment committee, 'Evaluation Committee of Research Activities for Nuclear Science and Engineering' (hereinafter referred to as 'Evaluation Committee') for interim assessment of 'Nuclear Science and Engineering,' in accordance with 'General Guideline for the Evaluation of Government Research and Development (R and D) Activities' by Cabinet Office, Government of Japan, Guideline for Evaluation of R and D in Ministry of Education, Culture, Sports, Science and Technology' and 'Regulation on Conduct for Evaluation of R and D Activities' by JAEA. An interim assessment of R and D activities in accordance with the midterm plan 'R and D on High-Temperature Gas Reactor and Hydrogen Manufacturing Technology Incorporating Them' by JAEA during the period of two years and nine months from October 2005 was carried out by Committee for Promoting R and D on High-Temperature Gas-Cooled Reactor System' (hereinafter referred to as 'Committee') for the Evaluation Committee. The assessment was carried out based on the explanatory documents submitted by Nuclear Applied Heat Technology Division, Nuclear Science and Engineering Directorate, JAEA. An interim assessment report 'R and D on High-Temperature Gas Reactor and Hydrogen Manufacturing Technology Incorporating Them' was finalized by the Committee. The result of assessment was discussed and accepted by the Evaluation Committee. (author)