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Title: Phenomena Identification and Ranking Table (PIRT) study for metallic structural materials for advanced High-Temperature reactor

Abstract

The Fluoride High-Temperature Reactor (FHR) technology promises many benefits including passive safety, proliferation-resistant waste forms, and improved economics. However, selection of reliable structural materials and identification of the possible degradation mechanisms for these is important for the licensure and the safe operation of FHRs. In order to address this task, the Georgia Tech led Integrated Research Project (IRP) hosted a Phenomena Identification and Ranking Table (PIRT) panel of experts to address degradation mechanisms and other materials related issues of importance to the FHRs. Futhermore, materials, ones that come in contact with FLiBe or FLiNaK molten salts or other related environments like high temperature steam etc., were considered in this PIRT. Focus of this PIRT was the metallic alloys, especially the ones that are permitted for the construction of elevated temperature Class A components by the ASME code. Degradation mechanisms considered in this PIRT included chemical degradation, mechanical degradation, radiation degradation, and synergistic effect of these mechanisms that may negatively impact operations or cause some safety concerns for the major structural components of FHRs. Main components which were considered included vessel and primary piping, primary heat exchangers, steam generator vessel, steam generator tubes, intermediate loop piping, valves and pumps. Welds inmore » all structural components were identified as an important class of material, which varies in composition and properties, and needs more attention. Importance of impurity control in molten fluorides considered for FHR was highlighted throughout PIRT panel discussions. As a result, this paper gives a summary of important results from the PIRT panel discussions and report.« less

Authors:
 [1];  [1];  [1];  [2];  [3];  [3];  [4];  [5];  [3];  [6]
  1. Georgia Inst. of Technology, Atlanta, GA (United States)
  2. Haynes International Inc., Kokomo, IN (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States)
  5. ThorCon Power, Jakarta (Indonesia)
  6. Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE), Nuclear Reactor Technologies (NE-7)
OSTI Identifier:
1504009
Alternate Identifier(s):
OSTI ID: 1501870
Grant/Contract Number:  
AC02-06CH11357; AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Annals of Nuclear Energy (Oxford)
Additional Journal Information:
Journal Name: Annals of Nuclear Energy (Oxford); Journal Volume: 123; Journal Issue: C; Journal ID: ISSN 0306-4549
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Corrosion; Fluoride-Salt-Cooled High Temperature Reactors (FHR); Material Degradation Mechanisms; Phenomena Identification and Ranking; Structural Materials

Citation Formats

Singh, Preet M., Chan, Kevin J., Deo, Chaitanya S., Deodeshmukh, Vinay, Keiser, James R., Ren, Weiju, Sham, T. L., Wilson, Dane F., Yoder, Graydon, and Zhang, Jinsuo. Phenomena Identification and Ranking Table (PIRT) study for metallic structural materials for advanced High-Temperature reactor. United States: N. p., 2018. Web. doi:10.1016/j.anucene.2018.08.036.
Singh, Preet M., Chan, Kevin J., Deo, Chaitanya S., Deodeshmukh, Vinay, Keiser, James R., Ren, Weiju, Sham, T. L., Wilson, Dane F., Yoder, Graydon, & Zhang, Jinsuo. Phenomena Identification and Ranking Table (PIRT) study for metallic structural materials for advanced High-Temperature reactor. United States. doi:10.1016/j.anucene.2018.08.036.
Singh, Preet M., Chan, Kevin J., Deo, Chaitanya S., Deodeshmukh, Vinay, Keiser, James R., Ren, Weiju, Sham, T. L., Wilson, Dane F., Yoder, Graydon, and Zhang, Jinsuo. Fri . "Phenomena Identification and Ranking Table (PIRT) study for metallic structural materials for advanced High-Temperature reactor". United States. doi:10.1016/j.anucene.2018.08.036. https://www.osti.gov/servlets/purl/1504009.
@article{osti_1504009,
title = {Phenomena Identification and Ranking Table (PIRT) study for metallic structural materials for advanced High-Temperature reactor},
author = {Singh, Preet M. and Chan, Kevin J. and Deo, Chaitanya S. and Deodeshmukh, Vinay and Keiser, James R. and Ren, Weiju and Sham, T. L. and Wilson, Dane F. and Yoder, Graydon and Zhang, Jinsuo},
abstractNote = {The Fluoride High-Temperature Reactor (FHR) technology promises many benefits including passive safety, proliferation-resistant waste forms, and improved economics. However, selection of reliable structural materials and identification of the possible degradation mechanisms for these is important for the licensure and the safe operation of FHRs. In order to address this task, the Georgia Tech led Integrated Research Project (IRP) hosted a Phenomena Identification and Ranking Table (PIRT) panel of experts to address degradation mechanisms and other materials related issues of importance to the FHRs. Futhermore, materials, ones that come in contact with FLiBe or FLiNaK molten salts or other related environments like high temperature steam etc., were considered in this PIRT. Focus of this PIRT was the metallic alloys, especially the ones that are permitted for the construction of elevated temperature Class A components by the ASME code. Degradation mechanisms considered in this PIRT included chemical degradation, mechanical degradation, radiation degradation, and synergistic effect of these mechanisms that may negatively impact operations or cause some safety concerns for the major structural components of FHRs. Main components which were considered included vessel and primary piping, primary heat exchangers, steam generator vessel, steam generator tubes, intermediate loop piping, valves and pumps. Welds in all structural components were identified as an important class of material, which varies in composition and properties, and needs more attention. Importance of impurity control in molten fluorides considered for FHR was highlighted throughout PIRT panel discussions. As a result, this paper gives a summary of important results from the PIRT panel discussions and report.},
doi = {10.1016/j.anucene.2018.08.036},
journal = {Annals of Nuclear Energy (Oxford)},
number = C,
volume = 123,
place = {United States},
year = {2018},
month = {9}
}

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