Instrumentation studies, Status report 2 (High level rate-of-rise)

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The purpose of this document is to present the latest results of a continuing instrumentation study being conducted by Research and Engineering. In a previous report results of 1-and 6-node calculations, for percentage- and fixed temperature-trip instrumentation were presented. These results were used to obtain a general understanding of the problem and to assess the value of using a multinodal approach. Calculations to determine the amount of protection provided by linear rate and period instrumentation were not performed at that time. Thus, the results of this previous report are limited in that they cover only a part of the possible … continued below

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34 p.

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Stiede, W. L. & Monnie, D. I. November 28, 1962.

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  • Hanford Atomic Products Operation
    Publisher Info: General Electric Co., Richland, WA (United States). Hanford Atomic Products Operation
    Place of Publication: Richland, Washington

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The purpose of this document is to present the latest results of a continuing instrumentation study being conducted by Research and Engineering. In a previous report results of 1-and 6-node calculations, for percentage- and fixed temperature-trip instrumentation were presented. These results were used to obtain a general understanding of the problem and to assess the value of using a multinodal approach. Calculations to determine the amount of protection provided by linear rate and period instrumentation were not performed at that time. Thus, the results of this previous report are limited in that they cover only a part of the possible nuclear safety instrumentation. The previous results indicated that the multinodal approach should be used in analyzing high level and intermediate instrumentation. The results presented in this report were obtained from an 11-node model covering percentage- and fixed-temperature-trip instrumentation, and also linear temperature rate-of-rise and linear power rate-of-rise. Other specialized cases were also investigated. In particular, data were obtained to provide: Eleven-node results for the old reactors; Results for the K reactors comparable to those previously obtained for the old reactors, and results using parameters chosen for the high speed scanner project; Linear power-rate-of-rise at the high levels. Comparison between 6- and 3.1-node models; The number of zone temperature indications required for good protection; and Safety parameters for the xenon-override enriched core. This report also includes a section on data used in the analysis and equations for calculating data when it was not available experimentally. It should be emphasized here that before taking data from the curves given in this report, the authors should be consulted to be sure that the results are applicable.

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34 p.

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OSTI as DE94010851; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

Other Information: DN: Declassified

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  • November 28, 1962

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  • Nov. 3, 2018, 11:47 a.m.

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  • Nov. 13, 2024, 1:20 a.m.

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Stiede, W. L. & Monnie, D. I. Instrumentation studies, Status report 2 (High level rate-of-rise), report, November 28, 1962; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1316884/: accessed March 14, 2026), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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