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1 Containment system <br /> 1 testing (cont.) <br /> ' Fig. 11-2.U-trapsformonitoring Tightenhose <br /> ' the annularspace between clamps <br /> Primary and secondary lines are ahernately <br /> I fabricated using saddles <br /> with 2-inch outlets and <br /> ' Dualoy 30001L primary <br /> pipe and fittings. <br /> I <br /> ' By others f -- 42 to 48-inch riser <br /> L <br /> Figs.11-3,4.Alternative <br /> configurations fcrinstalling U-traps. <br /> �n Above:The annularspace is isolated <br /> from the sump bymeans ofplain <br /> reducers.Below.,Additional space <br /> inside the sump is obtained by using a <br /> factory-modified sump penetration <br /> fitting as shown in Fig. 10-5. By <br /> Jothers 42 t048-inch riser <br /> r f— <br /> Annular <br /> space sealed <br /> 16 <br />