| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide materials useable as burnable poison materials in nuclear reactors, components which uses the materials, and to provide a method which uses the materials. <P>SOLUTION: Since burnable poison materials generates a desired daughter nuclide, when burning is finished, arrangement and use of the burnable poison materials for improving neutron characteristics and/or neutron flux shielding at a location where the poison is refrained from being used hitherto, because of its poor economical efficiency, become possible. The burnable poison materials related to embodiment may contain natural iridium and enriched iridium-193. The components may be manufactured, shaped and arranged in order to acquire a desired burnable poison effect, at a location in a core, where the burnable poison is not used hitherto, and at a location, where the burnable poison materials are not used hitherto, because their use is considered as being impossible, due to economic reasons. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
