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Instrumentation and control improvements for BWRs of the next century

Conference ·
OSTI ID:248147
 [1];  [2];  [3];  [4]
  1. General Electric Nuclear Energy, San Jose, CA (United States)
  2. Toshiba Corp., Yokohama (Japan)
  3. Hitachi, Ltd., Ibaraki (Japan)
  4. Tokyo Electric Power Co. (Japan)
+ Show Author Affiliations
Developing technologies and various conceptual features have been considered for BWRs of the next century, in addition to the current designs applied in Advanced BWR (ABWR) in Japan. A limited number of features are selected from these options for study and further development. The following is a synopsis of these features. A proposed approach of advanced Man-Machine Interface (MMI) in main control room design aims to lighten operators` burden, to reduce human errors and to shorten the scheduled inspection period. Based on advances in digital control system, a transient mitigation method for feedwater system failures has been developed using symptom based methodology that detects the system failure by the changes in plant process parameters and then, by applying appropriate action to mitigate a transient or avoid a scram. Improvement in Neutron Monitoring System (NMS) has been developed using Fixed Incore Calibration (FIC) system consisting of Gamma Thermometer (GT) sensors in fixed locations inside the Local Power Range Monitor (LPRM) assembly to replace the Traversing Incore Probe (TIP) sensors and system. Elimination of TIP system substantially simplifies the NMS and the under vessel area. By application of current and advanced sensor technology, a simplified and reliable plant information system can be made available to plant operation and maintenance. For this purpose, many applicable advanced sensing technologies, such as optical fiber sensing, fiber dyne highway and resonance ultrasonic based reactor water level measurements are investigated.
OSTI ID:
248147
Report Number(s):
CONF-960306--; ISBN 0-7918-1226-X
Country of Publication:
United States
Language:
English

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Related Subjects

21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
22 GENERAL STUDIES OF NUCLEAR REACTORS
BWR TYPE REACTORS
CONTROL ROOMS
DESIGN
HUMAN FACTORS ENGINEERING
LEVEL INDICATORS
MAN-MACHINE SYSTEMS
OPTICAL FIBERS
REACTOR CONTROL SYSTEMS
REACTOR INSTRUMENTATION
REACTOR MONITORING SYSTEMS
REACTOR OPERATORS
REACTOR TECHNOLOGY
THERMOMETERS