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Characteristic test of initial HTTR core

โœ Scribed by Naoki Nojiri; Satoshi Shimakawa; Nozomu Fujimoto; Minoru Goto

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
281 KB
Volume
233
Category
Article
ISSN
0029-5493

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โœฆ Synopsis

This paper describes the results of core physics test in start-up and power-up of the HTTR. The tests were conducted in order to ensure performance and safety of the high temperature gas cooled reactor, and was carried out to measure the critical approach, the excess reactivity, the shutdown margin, the control rod worth, the reactivity coefficient, the neutron flux distribution and the power distribution. The expected core performance and the required reactor safety characteristics were verified from the results of measurements and calculations.

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The high temperature gas-cooled reactor (HTGR) is particularly attractive due to its capability of producing high temperature helium gas and due to its inherent safety characteristics. The high temperature engineering test reactor (HTTR), which is the first HTGR in Japan, was successfully constructe