Evaluation of Candidate Linear Variable Displacement Transducers for High Temperature Irradiations in the Advanced Test Reactor

Knudson, D. L.; Rempe, J. L.; Daw, Joshua

doi:10.2172/968686

Cited by 11 publications

(10 citation statements)

References 2 publications

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“…To this end, five major efforts have been completed: (1) a comparison of the high temperature behavior of candidate nuclear-grade LVDTs, (2) an assessment of Curie temperature effects in the selected LVDT, (3) a gamma heating analysis to determine allowable positions in the ATR core for the selected LVDT, (4) a high temperature evaluation of the selected LVDT with an alternate coil material, and (5) an autoclave evaluation of the selected LVDT to verify elongation measurement accuracy at high temperatures and pressures. Those efforts are documented in References [5], [6] and [7].…”

Section: Prior Lvdt Evaluationsmentioning

confidence: 99%

A Variable Load LVDT-Based Creep Test Rig for Use

Davis¹,

Knudson²,

Rempe³

et al. 2013

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Section: Prior Lvdt Evaluationsmentioning

confidence: 99%

A Variable Load LVDT-Based Creep Test Rig for Use

Davis¹,

Knudson²,

Rempe³

et al. 2013

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“…As discussed in Ref. 106, specimens with (nominal) gauge diameter of 2 mm and a (nominal) gauge length of 28 mm were intentionally loaded beyond their yield strengths as a result of autoclave pressures and temperatures up to ~16 MPa and ~350°C, respectively, in these tests. In all these tests, disparities between LVDT and micrometer measurements with respect to final lengths were found to be very small (<0.9%).…”

Section: Lvdt/bellows-based Creep and Tensile Test Rigsmentioning

confidence: 99%

Status Report on Efforts to Enhance Instrumentation to Support Advanced Test Reactor Irradiations

Rempe¹,

Knudson²,

Daw³

2011

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The Department of Energy (DOE) designated the Advanced Test Reactor (ATR) as a National Scientific User Facility (NSUF) in April 2007 to support U.S. leadership in nuclear science and technology. By attracting new research users -universities, laboratories, and industry -the ATR NSUF facilitates basic and applied nuclear research and development, further advancing the nation's energy security needs. A key component of the ATR NSUF effort is to prove new in-pile instrumentation techniques that are capable of providing real-time measurements of key parameters during irradiation. To address this need, an assessment of instrumentation available and under-development at other test reactors was completed. Based on this review, recommendations were made with respect to what instrumentation is needed at the ATR; and a strategy was developed for obtaining these sensors. In 2009, a report was issued documenting this program's strategy and initial progress toward accomplishing program objectives. In 2009, a report was issued documenting this instrumentation development strategy and initial progress toward accomplishing instrumentation development program objectives. This document reports progress toward implementing this strategy in 2010.

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“…Tests by INL found that standard Halden LVDT operate at temperatures above 500°C for a limited time (up to approximately 700 hours) prior to signal degradation. 12 To avoid the issue of the Curie point, IFE/HRP is now testing other coil wire materials. Standard…”

Section: Norway (Ife-hrp)mentioning

confidence: 99%