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首页> 外文会议>ASME(American Society of Mechanical Engineers) Pressure Vessels and Piping Conference: Residual Stress, Fitness - for - Service and Manufacturing Processes; 20030720-20030724; Cleveland,OH; US >IMPLEMENTATION OF AN OUTER CAN WELDING SYSTEM FOR SAVANNAH RIVER SITE PLUTONIUM PROCESSING FACILITY
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IMPLEMENTATION OF AN OUTER CAN WELDING SYSTEM FOR SAVANNAH RIVER SITE PLUTONIUM PROCESSING FACILITY

机译：萨凡纳河现场P加工设施外罐焊接系统的实现

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摘要

This paper details three phases of testing to confirm use of a Gas Tungsten Arc (GTA) system for closure welding the 3013 outer container used for stabilization/storage of plutonium metals and oxides. The outer container/lid closure joint was originally designed for laser welding, but for this application, the gas tungsten arc (GTA) welding process has been adapted. The testing progressed in three phases: (1) system checkout to evaluate system components for operational readiness, (2) troubleshooting to evaluate high weld failure rates and develop corrective techniques, and (3) pre-installation acceptance testing. A total of 190 can/lid welds were made and evaluated. During Phase Ⅰ, weld failures were common due to pressure buildup and venting through the weld pool. During Phase Ⅱ, characterization of the electrode contact to the weld pool and weld pool blowouts helped in the development of a corrective technique. During Phase Ⅲ, a reduction in internal pressure, by controlling the final helium backfill of the can before welding, provided satisfactory weld results. The work described was performed during 2002 pre-installation testing at the Savannah River Technology Center in Aiken, S.C. before installation of an Outer Can Welder (OCW) system at the Savannah River Site (SRS) plutonium processing facility. The first OCW system was originally developed at the SRS to support similar plutonium stabilization/storage efforts at the Hanford Site (operated by Fluor Hanford Corporation).
机译：本文详细介绍了三个阶段的测试，以确认使用气体钨极电弧（GTA）系统进行3013外部容器的封闭焊接，以稳定/存储sto金属和氧化物。外部容器/盖闭合接头最初是为激光焊接而设计的，但对于这种应用，已经采用了钨极气体保护弧（GTA）焊接工艺。测试分三个阶段进行：（1）系统检查以评估系统组件的运行准备状态；（2）故障排除以评估高焊接失败率并开发纠正技术；以及（3）安装前验收测试。总共进行了190个罐/盖焊接并进行了评估。在第一阶段，由于压力累积和通过焊池的排气而导致的焊接失败很普遍。在第二阶段，表征电极与焊池的接触和焊池的爆裂有助于纠正技术的发展。在阶段Ⅲ中，通过控制焊接前罐的最终氦回填，降低了内部压力，从而提供了令人满意的焊接结果。所描述的工作是在2002年在南卡罗来纳州艾肯的萨凡纳河技术中心进行的预安装测试期间进行的，然后在萨凡纳河工地（SRS）p处理设施中安装了外罐焊机（OCW）系统。第一个OCW系统最初是在SRS上开发的，以支持Hanford站点（由Fluor Hanford Corporation经营）的类似stabilization稳定/存储工作。

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