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Containment system <br /> testing(cont.) <br /> f <br /> Fig.11-2.U-traps for monitoring Tighten hose I <br /> the annular space between clamps <br /> primary and secondary lines are alternately <br /> fabricated using saddles <br /> with 2-inch outlets and <br /> Dualoy 3000/L primary <br /> pipe and fittings. <br /> By others 42 to 48-inch riser <br /> ---- - ----- - -- -- -- - <br /> I <br /> Figs.11-3,4.Alternative <br /> configurations for installing U-traps. <br /> Above:The annular space is isolated <br /> from the sump by means of plain <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 /> others 42 to 48-inch riser <br /> I <br /> IT- -- -- -- - <br /> Annular <br /> space sealed I <br /> I <br /> i <br /> 16 <br />