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U.S. Department of Energy
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FLUZ - A Computer Code for Analyzing the Reactor Response to Small Reactivity Oscillations

Technical Report ·
DOI:https://doi.org/10.2172/4584974· OSTI ID:4584974
 [1];  [1];  [1]
  1. General Electric Co., San Jose, CA (United States)

One method of demonstrating the stability of a power reactor is to impress the critical reactor with a sinusoidal oscillating reactivity and measure its power response as a function of frequency. The computer code FLUZ synthesizes such a test for oscillations of small amplitudes. The same technique may be used to experimentally measure different coefficients of reactivity of a given reactor. By varying the period of the impressed reactivity it is possible to change, due to finite heat transfer times, the relative importance of various reactivity feedback mechanisms, such as the fuel Doppler effect or coolant density.

Research Organization:
General Electric Co., San Jose, CA (United States)
Sponsoring Organization:
US Atomic Energy Commission (AEC); USDOE National Nuclear Security Administration (NNSA), Nuclear Criticality Safety Program (NCSP)
NSA Number:
NSA-19-038124
OSTI ID:
4584974
Report Number(s):
GEAP--4580
Country of Publication:
United States
Language:
English