Economic Evaluation of Control Rod Materials and Fabrication Processes

Abstract

LN·l LEGAL NOTICEThis report was prepared as an account of Government sponsored work. Neither the United Slates, n(!r the Commission, nor any pe,.son a~ting on behalf of the Commission: A. Makes any warranty or representation, .expressed or implied, with respe~t to the at~ura~y, completeness, or usefulness of the information ~ontained in this report, or thallhe use of any information, apparatus, method, or pro~ess disclosed in this report may not infringe privately owned-rights; (!r B. Assumes any liabilities with respe~t io the use of; or for damages resulting from the use of any information, apparatus, method, or pro~ess dis~losed in this report.· As used in the above, "person acting on behalf of the Commission" includes any employee or contra~tor of the Commission, or em· ployee of such contractor, to the extent that such employee or contractor of the Commission, or employee of su~h contractor prepares, disseminates, or provides a~cess to, any information pursuant to his employment or ~ontract with the Commission, or bis employment with su~h contractor. y I -:• GEAP-4013 ABSTRACT Control rod materials, designs, and fabrication processes are compared for their relative economies. Control rod lifetime data are calculated with a simple approximation of nuclear worth depreciation.These data are used in conjunction with the estimated fabrication costs to determine the cost of using several absorber materials in a typical power reactor on a cost-per-year basis. The effect the control system has on core power density and fuel lifetime is included. ACKNOWLEDGMENTThe authors are indebted to A. J. Alexander for his help in estimating the costs for the various fabrication processes evaluated in this study.

Development Status of Control Rod Neutron Absorber Materials for Light Water Reactors with Extended Control Rod Lifetime and Enhanced Safety

“…보수적으로 적용하고 있다. [5][6][7][8] 탄화붕소 소결체 및 AIC 합금 중성자 흡수체 소재는 사고 조건에서 제어봉 피복재 소재와 공융 반응을 예상 반응이 일어나는 것으로 알려져 있다. [9][10][11] 제어봉 중성 자 흡수체 소재와 피복재 소재 간에 공융 반응이 일어난 다면, 상대적으로 낮은 온도 용융 반응으로 인하여 사고 조건에서의 노심(reactor core) 및 핵연료 손상 가능성 을 높이는 요인이 될 수도 있다.…”