Repair Welding of Irradiated Reactor Vessel Steel by Low Heat Input GTAW and LBW

Abstract:

• Periodical: Materials Science Forum (Volumes 539-543)
• Pages: 3912-3919
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.539-543.3912
• Online since: March 2007
• Authors: Kazuhiko Kamo, Masatoshi Sato, Kiyotomo Nakata
• Keywords: Crack, GTA Welding, Helium, LBW, Low Alloy Steel, Neutron Irradiation, Nickel-Based Alloy, Nuclear Reactor Vessel NRV, Porosity, Repair, Stainless Steel Clad, Temper Bead

References

[1] W. R. Kanne, Jr., Remote reactor repair: GTA weld cracking caused by entrapped helium, Welding J. 67 (1988) 33-39.

[2] H. T. Lin, B. A. Chin, M. L. Grossbeck, S. H. Goods, Welding of helium-doped austenitic and ferritic stainless steels, Proceedings of the 2nd Inter. Conf. on Trends in welding research, (Gatlinburg, Tennessee, USA, 14-18 May, 1989) 615-618.

[3] K.Koyabu, K.Asano, H.Takahashi, H.Sakamoto, S.Kawano, T.Nakamura, M.Hashimoto, M.Koshiishi, T.Kato, R.Katsura, S.Nishimura, Weldability of Neutron-Irradiated Stainless Steel and Nickel-Base Alloy, Quarterly Journal of The Japan Welding Society,18（2000）606-616．

DOI: 10.2207/qjjws.18.606

[4] R.J Kurtz and H.L. Heinisch, The effects of grain boundary structure on binding of He in Fe, J. Nucl. Mater. 329-333 (2004) 1199-1203.

DOI: 10.1016/j.jnucmat.2004.04.262

[5] Minister of Economy, Trade and Industry, 2003 report of local area priority R&D project "Development of effeciency and reliablity welding by highy-developed welding technology". Yes He >1.1appm Stainless steel only Clad No Yes No (Ni-based alloy is contained) Welding is Inapplicable* Laser beam welding Welding is Inapplicable** *：Crack is occurred in the weld metal. **：Conditions for sound repair-welding have not been found in Ni-based alloy clad with more than 0.1 appm He . =

DOI: 10.1080/09507119009453025