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Title: Implementation of an expert system for xenon spatial control in pressurized-water reactors

Abstract

Control of the axial xenon oscillations is a knowledge- and experience-intensive activity for reactor operators. To aid reactor operators in the control of axial xenon oscillations, an advisory expert system was developed. A rule-based expert system shell, INSIGHT2+, was used to build the expert system which was interfaced with a microcomputer-based core control model of a pressurized-water reactor, graphic engine, and data base. A core control model described by one-group diffusion theory with moderator temperature and xenon feedbacks was used to develop heuristic control rules and to test the system. Full- and part-length control rods, boron concentration, and coolant inlet temperature were considered as control variables of the core control model. This expert system consists of a search space: the set of possible power level and power shape patterns. The search space was made by combining the following core state variables: the sign of relative power and axial offset (AO) error, sign of the rate of change of power level and AO, and magnitude of relative power and AO error.

Authors:
Publication Date:
Research Org.:
Iowa State Univ. of Science and Technology, Ames, IA (USA)
OSTI Identifier:
5266225
Resource Type:
Thesis/Dissertation
Resource Relation:
Other Information: Thesis (Ph. D.)
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; COMPUTERIZED CONTROL SYSTEMS; EXPERT SYSTEMS; PWR TYPE REACTORS; XENON OSCILLATIONS; NEUTRON DIFFUSION EQUATION; NUCLEAR POISONS; ONE-GROUP THEORY; REACTOR CONTROL SYSTEMS; REACTOR OPERATORS; CONTROL SYSTEMS; DIFFERENTIAL EQUATIONS; EQUATIONS; MATERIALS; NEUTRON TRANSPORT THEORY; PERSONNEL; POISONING; REACTOR MATERIALS; REACTORS; TRANSPORT THEORY; WATER COOLED REACTORS; WATER MODERATED REACTORS; 220400* - Nuclear Reactor Technology- Control Systems; 210200 - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled; 990200 - Mathematics & Computers

Citation Formats

Chung, S K. Implementation of an expert system for xenon spatial control in pressurized-water reactors. United States: N. p., 1988. Web.
Chung, S K. Implementation of an expert system for xenon spatial control in pressurized-water reactors. United States.
Chung, S K. 1988. "Implementation of an expert system for xenon spatial control in pressurized-water reactors". United States.
@article{osti_5266225,
title = {Implementation of an expert system for xenon spatial control in pressurized-water reactors},
author = {Chung, S K},
abstractNote = {Control of the axial xenon oscillations is a knowledge- and experience-intensive activity for reactor operators. To aid reactor operators in the control of axial xenon oscillations, an advisory expert system was developed. A rule-based expert system shell, INSIGHT2+, was used to build the expert system which was interfaced with a microcomputer-based core control model of a pressurized-water reactor, graphic engine, and data base. A core control model described by one-group diffusion theory with moderator temperature and xenon feedbacks was used to develop heuristic control rules and to test the system. Full- and part-length control rods, boron concentration, and coolant inlet temperature were considered as control variables of the core control model. This expert system consists of a search space: the set of possible power level and power shape patterns. The search space was made by combining the following core state variables: the sign of relative power and axial offset (AO) error, sign of the rate of change of power level and AO, and magnitude of relative power and AO error.},
doi = {},
url = {https://www.osti.gov/biblio/5266225}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1988},
month = {Fri Jan 01 00:00:00 EST 1988}
}

Thesis/Dissertation:
Other availability
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