Takaharu FUKUZAKI, Dr. Eng.Professor, Department of Nuclear Engineering and Management,
Graduate School of Engineering, The University of Tokyo7-3-1Hongo, Bunkyo-ku, Tokyo, 113-8656, JAPAN
Technology Innovationin
Instrumentation and Control Systemfor
Nuclear Power Plant
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1. Introduction2. Core Operation and Management System (COMS) for Nuclear Power Plant3. Computer-Based Console for Nuclear Power Plant Trial (COCONUT)4. Lessons Learned from R&D Experience5. Conclusion
Contents
2
Introduction
BWR Core Performance Calculation System[BWR: Boiling Water Reactor] On-line monitoring of power distribution in
reactor core by physical-model-based simulation program
World leading &EPRI collaboration
Achievement #1
3
Introduction
ABWR Instrumentation and Control System[ABWR: Advanced BWR] Enlargement of automatic operation
Digitalization of control consoleOne-man control
prototype console
Achievement #2
4
Core Performance Calculation ProgramConstitution
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Core Performance Calculation ProgramFlowchart and Models
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Core Performance Calculation ProgramAdaptive capability
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Core Performance Calculation ProgramParameter optimization
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Core Performance Calculation ProgramPower correction factor calculation
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Core Performance Calculation ProgramControl rod dependent power correction
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Core Performance Calculation ProgramPredicting mode calculation
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Core Performance Calculation ProgramEvaluation of thermal power prediction
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Core Performance Calculation Program Evaluation of power distribution
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14
Transition of Man-Machine Interfacesin Main Control Room
Conventional
Improved Advanced
(Monitoring)(Decision)(Operation) (Monitoring)(Decision)(Operation) (Monitoring)(Decision)
Operator Operator Operator
Conventional I&C Conventional I&CAdvanced
Device
Plant Process Plant Process Plant Process
Enlarged Automation
Primary Sys.
Automation
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NUCAMM-90(NUCAMM: Nuclear Power Plant Complex with Advanced Man-Machine Interface)
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Selection of Important Alarmsduring Plant Transient
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Systematic Problem SolvingInfinite Final Solution
CurrentStage 1st
Stage
2ndStage
CurrentStage
InfiniteFinal Solution
(F-1)thStage
InfiniteFinal Solution
(F-2)thStage
1stStage
You might lose the way.
You might be embarrassed by moving targets.
Which approach is preferable ?
You might be required a little bit more effort and imagination.
You can easily find the way.
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Systematic Problem Solving Technology Evolution S-curve
Every technology evolutes in S-curve. Technology transfer is inevitable to reach higher degree.
Focus of invention is dependent on S-curve position.
To minimize cost
To increase reliability
To increase efficiency
To increase performance
To operate stably
To be operable
Degree of
ideality
Time(1) Idea
(2) Birth
(3) Infant / Growth
(4) Mature
(5) Retirement
Two achievements were introduced: BWR Core Performance Calculation System for on-line monitoring of power distribution in reactor core by physical-model-based simulation program ABWR Instrumentation and Control System for enlargement of automatic operation, and digitalization of control console
Conclusion
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Two approaches of Systematic Problem Solvingin Technology Innovation were proposed: to search from GOAL to START to recognize Technology Evolution S-curve
