skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Development and implementation of an automatic control algorithm for the University of Utah nuclear reactor

Abstract

The emphasis of this work is the development and implementation of an automatic control philosophy which uses the classical operational philosophies as a foundation. Three control algorithms were derived based on various simplifying assumptions. Two of the algorithms were tested in computer simulations. After realizing the insensitivity of the system to the simplifications, the most reduced form of the algorithms was implemented on the computer control system at the University of Utah (UNEL). Since the operational philosophies have a higher priority than automatic control, they determine when automatic control may be utilized. Unlike the operational philosophies, automatic control is not concerned with component failures. The object of this philosophy is the movement of absorber rods to produce a requested power. When the current power level is compared to the requested power level, an error may be detected which will require the movement of a control rod to correct the error. The automatic control philosophy adds another dimension to the classical operational philosophies. Using this philosophy, normal operator interactions with the computer would be limited only to run parameters such as power, period, and run time. This eliminates subjective judgements, objective judgements under pressure, and distractions to the operator and insuresmore » the reactor will be operated in a safe and controlled manner as well as providing reproducible operations.« less

Authors:
;  [1]
  1. Nuclear Engineering Laboratory, University of Utah, Salt Lake City, UT (United States)
Publication Date:
Research Org.:
General Atomics, San Diego, CA (United States)
OSTI Identifier:
21141214
Report Number(s):
INIS-US-09N0043; TOC-23
TRN: US09N0060020851
Resource Type:
Conference
Resource Relation:
Conference: 12. U.S. TRIGA users conference, Austin, TX (United States), 11-14 Mar 1990; Other Information: Country of input: International Atomic Energy Agency (IAEA); 9 refs, 8 figs; Related Information: In: 12. U.S. TRIGA users conference. Papers and abstracts, 328 pages.
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; ALGORITHMS; COMPUTERIZED CONTROL SYSTEMS; COMPUTERIZED SIMULATION; COMPUTERS; CONTROL; CONTROL ELEMENTS; EDUCATIONAL FACILITIES; IMPLEMENTATION; REACTORS

Citation Formats

Crawford, Kevan C., and Sandquist, Gary M.. Development and implementation of an automatic control algorithm for the University of Utah nuclear reactor. United States: N. p., 1990. Web.
Crawford, Kevan C., & Sandquist, Gary M.. Development and implementation of an automatic control algorithm for the University of Utah nuclear reactor. United States.
Crawford, Kevan C., and Sandquist, Gary M.. 1990. "Development and implementation of an automatic control algorithm for the University of Utah nuclear reactor". United States. doi:.
@article{osti_21141214,
title = {Development and implementation of an automatic control algorithm for the University of Utah nuclear reactor},
author = {Crawford, Kevan C. and Sandquist, Gary M.},
abstractNote = {The emphasis of this work is the development and implementation of an automatic control philosophy which uses the classical operational philosophies as a foundation. Three control algorithms were derived based on various simplifying assumptions. Two of the algorithms were tested in computer simulations. After realizing the insensitivity of the system to the simplifications, the most reduced form of the algorithms was implemented on the computer control system at the University of Utah (UNEL). Since the operational philosophies have a higher priority than automatic control, they determine when automatic control may be utilized. Unlike the operational philosophies, automatic control is not concerned with component failures. The object of this philosophy is the movement of absorber rods to produce a requested power. When the current power level is compared to the requested power level, an error may be detected which will require the movement of a control rod to correct the error. The automatic control philosophy adds another dimension to the classical operational philosophies. Using this philosophy, normal operator interactions with the computer would be limited only to run parameters such as power, period, and run time. This eliminates subjective judgements, objective judgements under pressure, and distractions to the operator and insures the reactor will be operated in a safe and controlled manner as well as providing reproducible operations.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1990,
month = 7
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • This three-volume report contains papers presented at the Twentieth Water Reactor Safety Information Meeting held at the Bethesda Marriott Hotel, Bethesda, Maryland, during the week of October 21--23, 1992. The papers describes progress and results of programs in nuclear safety research conducted in this country and abroad. Foreign participation in the meeting included 10 different papers presented by researchers from CEC, China, Finland, France, Germany, Japan, Spain and Taiwan. This document, Volume 1, presents, papers on: Advanced Reactor Research; Advanced passive LWR`s; advanced instrumentation and control hardware, advanced control system technology; human factors research; and EPRI`s nuclear safety research andmore » development. The individual papers have been cataloged separately.« less
  • Automatic differentiation (AD) has been expanding its role in scientific computing. While several AD tools have been actively developed and used, a wide range of problems remain to be solved. Activity analysis allows AD tools to generate derivative code for fewer variables, leading to a faster run time of the output code. This paper describes a new context-sensitive, flow-sensitive (CSFS) activity analysis, which is developed by extending an existing context-sensitive, flow-insensitive (CSFI) activity analysis. Our experiments with eight benchmarks show that the new CSFS activity analysis is more than 27 times slower but reduces 8 overestimations for the MIT Generalmore » Circulation Model (MITgcm) and 1 for an ODE solver (c2) compared with the existing CSFI activity analysis implementation. Although the number of reduced overestimations looks small, the additionally identified passive variables may significantly reduce tedious human effort in maintaining a large code base such as MITgcm.« less
  • The performance and reliability of electronic components subjected to intense neutron fields are a concern to the U.S. Department of Defense. To properly evaluate and qualify these components for critical defense applications, a candidate neutron test source must be well characterized and quantified for both neutron spatial and energetic behavior. Nuclear reactors are the primary systems used to provide such neutron sources, but electronic testing facilities must exhibit a reproducible and fully characterized environment. The University of Utah under contract with the U.S. Air Force and with technical support from Sandia National Laboratories (SNL) and the National Institute of Standardsmore » and Technology (NIST) has completed the neutron and gamma photon characterization of an electronic test cell in the university's TRIGA reactor.« less
  • On September 30, 1975 the University of Utah was granted an Operating License for its recently installed 100 kw TRIGA Reactor. General design features are discussed with emphasis upon novel features such as the three sloped beam tubes and double containment tank system for primary water dictated by nearness to the Wasatch geological fault. Also, recent NRC licensing experience and the University of Utah's Technical Specifications are examined for possible impact upon all U.S. TRIGA owners. (author)
  • An overview of the Oil Sand Research and Development Program at the University of Utah will be presented. It will include resource characterization of the Uinta Basin oils and deposits and bitumens and bitumen-derived liquid recovery and upgrading technology and product utilization. The characterization studies will include the Whiterocks and Asphalt Ridge oil sands. The discussion of recovery and upgrading technologies will include aqueous separation, thermal recovery processes; solvent extraction, and thermal and catalytic upgrading of bitumen and bitumen-derived heavy oils. Product evaluation studies will include jet fuels, diesel fuel, asphalt and specialty chemicals. Plans for the future of themore » project will be discussed.« less