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Title: STABILITY AND TRANSIENT ANALYSIS OF THE EOCR

Abstract

The dynamic characteristics of the EOCR plant are investigated at fuli power (40 Mw). The stability margins of the various internal feed-back loops of the system as well as of the overall system with and without automatic power and temperature controls are analyzed by frequency response techniques. The reactor core is treated as a distributed system for the heat transfer representation by allowing reactor power, neutron flux, fuel plate temperature and organic temperatures to vary in time and onedimensional space. The temperature coefficients of reactivity of the coolant and moderator are considered. The heat exchanger and pneumatic temperature controller dynamics are discussed in detail as a separate system, then coupled to the reactor core. The on- off power level control system effect on stability is analyzed by describing function techniques. The equations used for an analog computer study of the overall system transient response are presented. The transient responses of the system variables are presented and discussed. Recommendations aimed at improving overall system performance are given. (auth)

Authors:
; ;
Publication Date:
Research Org.:
Phillips Petroleum Co. Atomic Energy Div., Idaho Falls, Idaho
OSTI Identifier:
4759481
Report Number(s):
IDO-16756
NSA Number:
NSA-17-002579
DOE Contract Number:
AT(10-1)-205
Resource Type:
Technical Report
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-63
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; ANALOG SYSTEMS; COMPUTERS; CONTROL; EOCR; EQUATIONS; FUEL ELEMENTS; HEAT EXCHANGERS; HEAT TRANSFER; NEUTRON FLUX; PERFORMANCE; PLATES; PNEUMATICS; POWER; POWER PLANTS; REACTIVITY; REACTOR CORE; REACTOR KINETICS; REACTORS; STABILITY; TEMPERATURE; TRANSIENTS; USES; VARIATIONS

Citation Formats

Gossmann, S.R., Moore, K.V., and Hyer, F.K.. STABILITY AND TRANSIENT ANALYSIS OF THE EOCR. United States: N. p., 1962. Web. doi:10.2172/4759481.
Gossmann, S.R., Moore, K.V., & Hyer, F.K.. STABILITY AND TRANSIENT ANALYSIS OF THE EOCR. United States. doi:10.2172/4759481.
Gossmann, S.R., Moore, K.V., and Hyer, F.K.. Fri . "STABILITY AND TRANSIENT ANALYSIS OF THE EOCR". United States. doi:10.2172/4759481. https://www.osti.gov/servlets/purl/4759481.
@article{osti_4759481,
title = {STABILITY AND TRANSIENT ANALYSIS OF THE EOCR},
author = {Gossmann, S.R. and Moore, K.V. and Hyer, F.K.},
abstractNote = {The dynamic characteristics of the EOCR plant are investigated at fuli power (40 Mw). The stability margins of the various internal feed-back loops of the system as well as of the overall system with and without automatic power and temperature controls are analyzed by frequency response techniques. The reactor core is treated as a distributed system for the heat transfer representation by allowing reactor power, neutron flux, fuel plate temperature and organic temperatures to vary in time and onedimensional space. The temperature coefficients of reactivity of the coolant and moderator are considered. The heat exchanger and pneumatic temperature controller dynamics are discussed in detail as a separate system, then coupled to the reactor core. The on- off power level control system effect on stability is analyzed by describing function techniques. The equations used for an analog computer study of the overall system transient response are presented. The transient responses of the system variables are presented and discussed. Recommendations aimed at improving overall system performance are given. (auth)},
doi = {10.2172/4759481},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 24 00:00:00 EDT 1962},
month = {Fri Aug 24 00:00:00 EDT 1962}
}

Technical Report:

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  • The inherent stability of the EOCR at full power, exclusive of the heat exchanger, is investigated. Space and time dependent differential equations and transfer functions for the nuclear and thermal processes occurring in the reactor core and vessel are derived. Reactor stability is analyzed by application of the Nyquist stability criterion. The results show that the EOCR has an extremely large margin of inherent stability. (auth)
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