Auxiliary beam stress improved laser welding for repair of irradiated light water reactor components

Jian Chen; Roger Miller; Keith Leonard; Jonathan Tatman; Wei Tang; Benjamin Sutton; Zhili Feng; Maxim Gussev; Greg Frederick

doi:10.1115/PVP2019-93667

Auxiliary beam stress improved laser welding for repair of irradiated light water reactor components

Jian Chen, Roger Miller, Keith Leonard, Jonathan Tatman, Wei Tang, Benjamin Sutton, Zhili Feng, Maxim Gussev, Greg Frederick

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

2 Scopus citations

Abstract

The welding task focuses on development of advanced welding technologies for repair and maintenance of nuclear reactor structural components to safely and cost-effectively extend the service life of nuclear power reactors. This paper presents an integrated research and development effort by the Department of Energy Light Water Reactor Sustainability Program through the Oak Ridge National Laboratory (ORNL) and Electric Power Research Institute (EPRI) to develop a patent-pending technology, Auxiliary Beam Stress Improved Laser Welding Technique, that proactively manages the stresses during laser repair welding of highly irradiated reactor internals without helium induced cracking (HeIC). Finite element numerical simulations and in-situ temperature and strain experimental validation have been utilized to identify candidate welding conditions to achieve significant stress compression near the weld pool during cooling. Preliminary welding experiments were performed on irradiated stainlesssteel plates (Type 304L). Post-weld characterization reveals that no macroscopic HeIC was observed.

Original language	English
Title of host publication	Codes and Standards
Publisher	American Society of Mechanical Engineers (ASME)
ISBN (Electronic)	9780791858929
DOIs	https://doi.org/10.1115/PVP2019-93667
State	Published - 2019
Event	ASME 2019 Pressure Vessels and Piping Conference, PVP 2019 - San Antonio, United States Duration: Jul 14 2019 → Jul 19 2019

Publication series

Name	American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume	1
ISSN (Print)	0277-027X

Conference

Conference	ASME 2019 Pressure Vessels and Piping Conference, PVP 2019
Country/Territory	United States
City	San Antonio
Period	07/14/19 → 07/19/19

Funding

This research was sponsored by the U.S. Department of Energy (DOE), Office of Nuclear Energy - Light Water Reactor Sustainability Program and the EPRI Long Term Operations Program. The overall objective of this research is to develop advanced welding technologies that can be used to repair highly * Contact author: [email protected] This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the US Department of Energy (DOE). The US government retains and the publisher, by accepting the article for publication, acknowledges that the US government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for US government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/doe-public-access-plan The authors gratefully acknowledge Materials Science and Technology Division leader Jeremy Busby, the facilities and operations contributions of Allen Smith, Kathryn Kinney, C. Scott White, Chad Crawford, Mark Delph, Clay Morris, Tony Davis, Rick Bowman, Scott Thurman and numerous technical personnel from REDC and IMET of ORNL, The engineering support of Kurt Smith and Bob Sitterson, Microstructure characterization efforts of Joshua Schmidlin, Maxim Gussev, Xunxiang Hu, Linda Hulsey, Patricia Tedder, Travis Dixon and Brian Eckhart from LAMDA at ORNL, along with the contributions of Alan Frederick and Doug Kyle from the processing and joining group of ORNL, as well as numbers of technical personnel at Electric Power Research Institute. This research was sponsored by the U.S. Department of Energy (DOE), Office of Nuclear Energy - Light Water Reactor Sustainability Program and the EPRI Long Term Operations Program.

Funders	Funder number
EPRI Long Term Operations Program
LAMDA
Office of Nuclear Energy - Light Water Reactor Sustainability Program
US Department of Energy
UT-Battelle	DE-AC05-00OR22725
U.S. Department of Energy
Oak Ridge National Laboratory
Electric Power Research Institute

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10.1115/PVP2019-93667

Cite this

Chen, J., Miller, R., Leonard, K., Tatman, J., Tang, W., Sutton, B., Feng, Z., Gussev, M., & Frederick, G. (2019). Auxiliary beam stress improved laser welding for repair of irradiated light water reactor components. In Codes and Standards (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP2019-93667

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title = "Auxiliary beam stress improved laser welding for repair of irradiated light water reactor components",

abstract = "The welding task focuses on development of advanced welding technologies for repair and maintenance of nuclear reactor structural components to safely and cost-effectively extend the service life of nuclear power reactors. This paper presents an integrated research and development effort by the Department of Energy Light Water Reactor Sustainability Program through the Oak Ridge National Laboratory (ORNL) and Electric Power Research Institute (EPRI) to develop a patent-pending technology, Auxiliary Beam Stress Improved Laser Welding Technique, that proactively manages the stresses during laser repair welding of highly irradiated reactor internals without helium induced cracking (HeIC). Finite element numerical simulations and in-situ temperature and strain experimental validation have been utilized to identify candidate welding conditions to achieve significant stress compression near the weld pool during cooling. Preliminary welding experiments were performed on irradiated stainlesssteel plates (Type 304L). Post-weld characterization reveals that no macroscopic HeIC was observed.",

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Chen, J , Miller, R, Leonard, K, Tatman, J, Tang, W, Sutton, B, Feng, Z , Gussev, M & Frederick, G 2019, Auxiliary beam stress improved laser welding for repair of irradiated light water reactor components. in Codes and Standards. American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP, vol. 1, American Society of Mechanical Engineers (ASME), ASME 2019 Pressure Vessels and Piping Conference, PVP 2019, San Antonio, United States, 07/14/19. https://doi.org/10.1115/PVP2019-93667

Auxiliary beam stress improved laser welding for repair of irradiated light water reactor components. / Chen, Jian ; Miller, Roger; Leonard, Keith et al.
Codes and Standards. American Society of Mechanical Engineers (ASME), 2019. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 1).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Chen, Jian

AU - Miller, Roger

AU - Leonard, Keith

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AU - Sutton, Benjamin

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AU - Gussev, Maxim

AU - Frederick, Greg

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Chen J , Miller R, Leonard K, Tatman J, Tang W, Sutton B et al. Auxiliary beam stress improved laser welding for repair of irradiated light water reactor components. In Codes and Standards. American Society of Mechanical Engineers (ASME). 2019. (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP). doi: 10.1115/PVP2019-93667

Auxiliary beam stress improved laser welding for repair of irradiated light water reactor components

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