Advanced nuclear instrumentation for 21st century

摘要

Toshiba has been developing reliable, economical, and user-friendly nuclear instrumentation systems for boiling water reactors (BWRs) since the early 1980s, using advanced and highly trustworthy digital-optical technologies. Our latesttechnologies are applied in the digital neutron monitoring system (startup range, power range) and the highest reliability in-core neutron detector (local power range and startup range neutron detector). These technologies have supported the operation ofthe first commercial advanced boiling water reactor (ABWR), the Kashiwazaki-Kariwa Nuclear Power Station Unit No. 6 of The Tokyo Electric Power Co., Inc.Among the current activities for the development of next-generation systems for the 21st century, progress is being made on the fixed in-core calibration system for replacing an existing traverse in-core probe, the combined-function in-core detector, ahighly sophisticated radiation monitor, and other systems. This paper outlines these examples of technologies and know-how for the 21st century.