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Title: Advance High Temperature Inspection Capabilities for Small Modular Reactors: Part 1 - Ultrasonics

Abstract

The project objective was to investigate the development non-destructive evaluation techniques for advanced small modular reactors (aSMR), where the research sought to provide key enabling inspection technologies needed to support the design and maintenance of reactor component performance. The project tasks for the development of inspection techniques to be applied to small modular reactor are being addressed through two related activities. The first is focused on high temperature ultrasonic transducers development (this report Part 1) and the second is focused on an advanced eddy current inspection capability (Part 2). For both inspection techniques the primary aim is to develop in-service inspection techniques that can be carried out under standby condition in a fast reactor at a temperature of approximately 250°C in the presence of liquid sodium. The piezoelectric material and the bonding between layers have been recognized as key factors fundamental for development of robust ultrasonic transducers. Dielectric constant characterization of bismuth scantanate-lead titanate ((1-x)BiScO 3-xPbTiO 3) (BS-PT) has shown a high Curie temperature in excess of 450°C , suitable for hot stand-by inspection in liquid metal reactors. High temperature pulse-echo contact measurements have been performed with BS-PT bonded to 12.5 mm thick 1018-low carbon steel plate from 20C upmore » to 260 C. High temperature air-backed immersion transducers have been developed with BS-PT, high temperature epoxy and quarter wavlength nickel plate, needed for wetting ability in liquid sodium. Ultrasonic immersion measurements have been performed in water up to 92C and in silicone oil up to 140C. Physics based models have been validated with room temperature experimental data with benchmark artifical defects.« less

Authors:
 [1];  [1]
  1. Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Iowa State Univ., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1417974
Report Number(s):
13-5150
13-5150; TRN: US1801176
DOE Contract Number:  
NE0000676
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; IN-SERVICE INSPECTION; SMALL MODULAR REACTORS; ULTRASONIC WAVES; REACTOR COMPONENTS

Citation Formats

Bond, Leonard J., and Bowler, John R. Advance High Temperature Inspection Capabilities for Small Modular Reactors: Part 1 - Ultrasonics. United States: N. p., 2017. Web. doi:10.2172/1417974.
Bond, Leonard J., & Bowler, John R. Advance High Temperature Inspection Capabilities for Small Modular Reactors: Part 1 - Ultrasonics. United States. doi:10.2172/1417974.
Bond, Leonard J., and Bowler, John R. Wed . "Advance High Temperature Inspection Capabilities for Small Modular Reactors: Part 1 - Ultrasonics". United States. doi:10.2172/1417974. https://www.osti.gov/servlets/purl/1417974.
@article{osti_1417974,
title = {Advance High Temperature Inspection Capabilities for Small Modular Reactors: Part 1 - Ultrasonics},
author = {Bond, Leonard J. and Bowler, John R.},
abstractNote = {The project objective was to investigate the development non-destructive evaluation techniques for advanced small modular reactors (aSMR), where the research sought to provide key enabling inspection technologies needed to support the design and maintenance of reactor component performance. The project tasks for the development of inspection techniques to be applied to small modular reactor are being addressed through two related activities. The first is focused on high temperature ultrasonic transducers development (this report Part 1) and the second is focused on an advanced eddy current inspection capability (Part 2). For both inspection techniques the primary aim is to develop in-service inspection techniques that can be carried out under standby condition in a fast reactor at a temperature of approximately 250°C in the presence of liquid sodium. The piezoelectric material and the bonding between layers have been recognized as key factors fundamental for development of robust ultrasonic transducers. Dielectric constant characterization of bismuth scantanate-lead titanate ((1-x)BiScO3-xPbTiO3) (BS-PT) has shown a high Curie temperature in excess of 450°C , suitable for hot stand-by inspection in liquid metal reactors. High temperature pulse-echo contact measurements have been performed with BS-PT bonded to 12.5 mm thick 1018-low carbon steel plate from 20C up to 260 C. High temperature air-backed immersion transducers have been developed with BS-PT, high temperature epoxy and quarter wavlength nickel plate, needed for wetting ability in liquid sodium. Ultrasonic immersion measurements have been performed in water up to 92C and in silicone oil up to 140C. Physics based models have been validated with room temperature experimental data with benchmark artifical defects.},
doi = {10.2172/1417974},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2017},
month = {8}
}