Boiling water reactor control rod programming using heuristic and mathematical methods

Journal Article · Tue Apr 01 04:00:00 EST 1980 · Nucl. Technol.; (United States)

OSTI ID:7065371

Hayase, T; Motoda, H

OPROD, a computer code for automatic generation of control rod programming that has successfully been applied to an older boiling water reactor (BWR), has experienced some difficulties when applied to a BWR of larger power density and stronger heterogeneity. To improve the performance, a heuristic algorithm that is derived from accumulated experience has been introduced to search for a feasible rod pattern that satisfies all constraints. Application of this algorithm to an initial cycle of an 800-MW(e) BWR of high heterogeneity has been very successful. It has been demonstrated that the proposed algorithm is capable of finding a feasible rod pattern, even starting from an all-rods-out pattern. Some improvement was also made in the method of approximation programming (MAP) algorithm. The temporal constraint relaxation method is shown to be effective in finding an optimal control rod pattern in MAP starting from a guess pattern that is not feasible.

• Research Organization: Energy Research Lab., Ibaraki, Japan
• OSTI ID: 7065371
• Journal Information: Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 48:2; ISSN NUTYB
• Country of Publication: United States
• Language: English

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