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DOE OSTI · 2478164

ATF-2 Ramp Conceptual Design Report

Kamerman, David W.·Labossiere-Hickman, Travis J.·Durtschi, Brian P.·Hoggard II, Gary N.
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Abstract

The following report documents the conceptual design for the ATF-2 Ramp experiment. The experiment aims to fill the in-pile irradiation testing gap to conduct integral ramp testing, which was created by the closure of R2, Osiris, and Halden test reactors. The concept involves the simultaneous ramping of three fuel pins using a power axial locator mechanism in the Loop-2A testing facility in the center flux trap of the advanced test reactor (ATR). The three fuel pins are ramped in individual coolant channels containing a prototypic PWR environment. Rod failure will be detected using a fuel rod elongation sensor attached to the fuel pin upper end cap. An axial stack of concentric hafnium and zirconium shrouds will be used to shape the flux around the test pins to create different power levels in each pin and to ensure the peak power location of each pin remains in the center of the test rod. Monte Carlo simulations are used to demonstrate the viability of this design concept.

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Kamerman, David W., Labossiere-Hickman, Travis J., Durtschi, Brian P., Hoggard II, Gary N.. 2023-02-13. ATF-2 Ramp Conceptual Design Report. https://doi.org/10.2172/2478164

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