Application of New Welding Technology for the Manufacturing of Nuclear Pressure Vessels

Shono, Susumu; Kawaguchi, Seiichi; Sugino, Masaru; Nakajima, Nobuya

doi:10.1016/b978-1-4832-8430-9.50125-8

Cited by 3 publications

(1 citation statement)

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“…5 shows a cross-sectional miPhoto. 5 Microstructure of region just below fracture initiation crostructure just below the fracture initiation. The microstructure is upper bainite mixed with lower bainite.…”

Section: Analysis Of Factors Controlling the Deterioration In Toughnementioning

confidence: 99%

Improving Electron Beam Weldability of Heavy Steel Plates for PWR-Steam Generator.

Tomita

Mabuchi

Koyama

1996

J. Nucl. Sci. Technol.

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Installation and replacement of many PWR-steam generators are planned inside and outside Japan. The steel plates for steam generators are heavy in thickness, and increase the number of welding passes and prolong the welding time. Electron beam welding (EBW) can greatly reduce the welding period compared with conventional welding methods (narrow-gap gas metal arc welding (GMAW) and submerged arc welding (SAW)). The problems in applying EBW are t o prevent weld defects and to improve the toughness of the weld metal. Defect-free welding procedures were successfully established even in thick steel plates. The factors that deteriorate weld-metal (WM) toughness of EBW were investigated. The manufacturing process, which utilizes a new secondary refining process at steelmaking and a high-torque mill at plate mill in actual massproduction, were established. EBW base metal and WM have better properties including fracture toughness than those of conventional welding processes. As a result, an application of EBW to the fabrication of PWRsteam generators has become possible. Large amounts of ASTM A533 Gr B C12 (JIS SQV2B) steel plates in actual PWR-steam generators have come to be produced (more than 1,500 ton) by appling EBW.

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Section: Analysis Of Factors Controlling the Deterioration In Toughnementioning

confidence: 99%

Improving Electron Beam Weldability of Heavy Steel Plates for PWR-Steam Generator.

Tomita

Mabuchi

Koyama

1996

J. Nucl. Sci. Technol.

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show abstract

Assessing and mitigating the distortion and stress during electron beam welding of a large shell-flange structure

Sun

Smith²,

Dutilleul³

et al. 2022

International Journal of Pressure Vessels and Piping

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Nuclear Reactor Pressure Vessel Welds: A Critical and Historical Review of Microstructures, Mechanical Properties, Irradiation Effects, and Future Opportunities

Emerson,

Marrero-Jackson,

Nemets

et al. 2024

Materials & Design

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Application of New Welding Technology for the Manufacturing of Nuclear Pressure Vessels

Cited by 3 publications

References 0 publications

Improving Electron Beam Weldability of Heavy Steel Plates for PWR-Steam Generator.

Improving Electron Beam Weldability of Heavy Steel Plates for PWR-Steam Generator.

Assessing and mitigating the distortion and stress during electron beam welding of a large shell-flange structure

Nuclear Reactor Pressure Vessel Welds: A Critical and Historical Review of Microstructures, Mechanical Properties, Irradiation Effects, and Future Opportunities

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