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Title: Materials Issues in High Temperature Ultrasonic Transducers for Under-Sodium Viewing

Abstract

Liquid sodium is used as the coolant in some fast spectrum nuclear reactors. This material is optically opaque. To facilitate operations and maintenance activities, an ultrasonic under-sodium viewing system has been developed. In the USA, the technology was successfully demonstrated in the 1970's, and, over the intervening 30+ years the capability was lost. This paper reports materials challenges encountered in developing both single-element and linear phased array 2 MHz transducers that must operate at temperatures up to 260C. The critical issues are fundamentally material selection: the ability of a transducer to be immersed into liquid sodium and function at 260C, to achieve wetting and transmission of ultrasound into the sodium, and to be able to be removed and re-used.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1045114
Report Number(s):
PNNL-SA-82564
RC0404000; TRN: US1203515
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Conference
Resource Relation:
Conference: Review of Progress in Quantitative Nondestructive Evaluation Volume 31, July 17-22, 2011, Burlington, Vermont. AIP Conference Proceedings, 1430:1617-1624
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 22 GENERAL STUDIES OF NUCLEAR REACTORS; COOLANTS; EVALUATION; MAINTENANCE; REACTORS; SODIUM; TRANSDUCERS; ULTRASONIC WAVES; Sodium Cooled Fast Reactor; Under-Sodium Viewing; Linear Ultrasonic Phased Array

Citation Formats

Bond, Leonard J., Griffin, Jeffrey W., Posakony, Gerald J., Harris, Robert V., and Baldwin, David L. Materials Issues in High Temperature Ultrasonic Transducers for Under-Sodium Viewing. United States: N. p., 2012. Web. doi:10.1063/1.4716407.
Bond, Leonard J., Griffin, Jeffrey W., Posakony, Gerald J., Harris, Robert V., & Baldwin, David L. Materials Issues in High Temperature Ultrasonic Transducers for Under-Sodium Viewing. United States. doi:10.1063/1.4716407.
Bond, Leonard J., Griffin, Jeffrey W., Posakony, Gerald J., Harris, Robert V., and Baldwin, David L. Tue . "Materials Issues in High Temperature Ultrasonic Transducers for Under-Sodium Viewing". United States. doi:10.1063/1.4716407.
@article{osti_1045114,
title = {Materials Issues in High Temperature Ultrasonic Transducers for Under-Sodium Viewing},
author = {Bond, Leonard J. and Griffin, Jeffrey W. and Posakony, Gerald J. and Harris, Robert V. and Baldwin, David L.},
abstractNote = {Liquid sodium is used as the coolant in some fast spectrum nuclear reactors. This material is optically opaque. To facilitate operations and maintenance activities, an ultrasonic under-sodium viewing system has been developed. In the USA, the technology was successfully demonstrated in the 1970's, and, over the intervening 30+ years the capability was lost. This paper reports materials challenges encountered in developing both single-element and linear phased array 2 MHz transducers that must operate at temperatures up to 260C. The critical issues are fundamentally material selection: the ability of a transducer to be immersed into liquid sodium and function at 260C, to achieve wetting and transmission of ultrasound into the sodium, and to be able to be removed and re-used.},
doi = {10.1063/1.4716407},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {6}
}

Conference:
Other availability
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