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Title: Study of the Open Loop and Closed Loop Oscillator Techniques

This report presents the progress and completion of a five-year study undertaken at Idaho State University of the measurement of very small worth reactivity samples comparing open and closed loop oscillator techniques.The study conclusively demonstrated the equivalency of the two techniques with regard to uncertainties in reactivity values, i.e., limited by reactor noise. As those results are thoroughly documented in recent publications, in this report we will concentrate on the support work that was necessary. For example, we describe in some detail the construction and calibration of a pilot rod for the closed loop system. We discuss the campaign to measure the required reactor parameters necessary for inverse-kinetics. Finally, we briefly discuss the transfer of the open loop technique to other reactor systems.
 [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [1]
  1. Idaho State Univ., Pocatello, ID (United States)
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  3. Knolls Atomic Power Lab. (KAPL), Schenectady, NY (United States)
  4. Puget Sound Naval Base, Bremerton, WA (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
10-889; TRN: US1500057
DOE Contract Number:
Resource Type:
Technical Report
Research Org:
Idaho State Univ., Pocatello, ID (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE), Nuclear Energy University Programs (NEUP)
Country of Publication:
United States
22 GENERAL STUDIES OF NUCLEAR REACTORS; Reactivity Worths; Closed-Loop Control; Open-Loop Control; Reactor Oscillators; Data Covariances; COMPARATIVE EVALUATIONS; Reactor Noise; Calibration; Reactor Kinetics; TRIGA Type Reactors; Fast Reactors