The final seal weld is made. The relative inaccessibility and complex geometry of many welded joints renders a single global leak test impractical, if not impossible. The entire welded joint is leak tested in a series of stages by dividing each weld run into discrete identifiable sections. A locally attached secondary pumping containment (adapter) is used to perform the leak test. smaller joints, in particular, the 100mm circular port sleeves are hot leak tested (ประมาณ 420k),in a single stage operation