STP1405: An Evaluation of the Effect of Radiation Environment on Linde 80 Reactor Vessel Welds

    DeVan, MJ
    Supervisory Engineer, Engineering and Licensing, Framatome Technologies, Inc., Lynchburg, VA

    Pavinich, WA
    President, Invex Engineering, Knoxville, TN

    Pages: 11    Published: Jan 2001


    Abstract

    The B&W Owners Group (B&WOG) developed the Master Integrated Reactor Vessel Surveillance Program (MIRVP) to encompass all domestic operating pressurized water reactors (PWRs) with reactor vessels that contain Linde 80 submerged-arc welds. These PWRs include the reactor vessels fabricated by Babcock & Wilcox (B&W) that include B&W-designed 177-Fuel Assembly (FA) plants and Westinghouse-designed plants. The B&WOG Reactor Vessel Working Group has sponsored studies over the past several years to develop an understanding of the mechanisms and trends of radiation embrittlement for reactor vessel submerged-arc welds fabricated using Linde 80 weld flux. As part of the MIRVP, a Westinghouse-designed capsule was included to provide a comparison of irradiation data in the Westinghouse neutronic environment with the B&W 177-FA environment. This paper presents the effect of irradiation environment on the embrittlement trends of Linde 80 submerged-arc welds based on mechanical test data available through the B&WOG and the literature, and existing trend curves.

    Keywords:

    submerged-arc welds, reactor vessel, radiation embrittlement, irradiation temperature


    Paper ID: STP10539S

    Committee/Subcommittee: E10.07

    DOI: 10.1520/STP10539S


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