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SHUTDOWN REACTIVITY BY THE MODIFIED ROD DROP METHOD

K.V. Moore

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Abstract

A more accurate rod-drop method for measuring the shutdown reactivity available from control rods is outlined. Corrections due to flux shape changes can be applied to the measurements, and the use of pretimed scram equipment provides excellent reproducibility. Finite rod-drop times are also taken into account. Results for ARMF-H and ETRC are included. (auth)

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A more accurate rod-drop method for measuring the shutdown reactivity available from control rods is outlined. Corrections due to flux shape changes can be applied to the measurements, and the use of pretimed scram equipment provides excellent reproducibility. Finite rod-drop times are also taken into account. Results for ARMF-H and ETRC are included. (auth)

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Available abstract

A more accurate rod-drop method for measuring the shutdown reactivity available from control rods is outlined. Corrections due to flux shape changes can be applied to the measurements, and the use of pretimed scram equipment provides excellent reproducibility. Finite rod-drop times are also taken into account. Results for ARMF-H and ETRC are included. (auth)

Key concepts: Shutdown, Scram, Control rod, Drop (telecommunication), Reproducibility, Rod, Nuclear engineering, Materials science

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