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Dry fitting secondary Access to primary fittings <br /> containment systems Ameron secondary containment piping provides convenient access to primary fittings <br /> (cont.) during bonding,testing and inspection by using lengths of 3'/2-inch containment pipe <br /> and appropriate reducing couplings.In most layouts the primary runs can be contained <br /> by three pieces of containment pipe,as shown in Fig.7-5.The containment pipe at the <br /> ends of the run are standard diameters one size larger than the primary line;the middle <br /> piece is 3'h-inch containment pipe.In a'3 over 2'system,the 31h-inch containment <br /> section slips over the 3-inch containment pipe as shown in Fig.7-7;in a'4 over3' <br /> system,the 3'h-inch containment section slips inside.By manipulating the pipe <br /> sections,ready access to the primary fittings can be achieved. <br /> I I I I <br /> Fig.7-5.Most primary runs can be <br /> contained by three pieces of <br /> containment pipe. <br /> f1 Runs of containment piping are closed using <br /> 3'h x 3-inch reducing closure pieces in'3 over 2' <br /> Fig.7-6.Containment reducers are systems and 4 x 3'h-inch reducing closure <br /> fumished with a pipe stop to <br /> prevent over-insertion of the pipe pieces in'4 over 3'systems. <br /> on the large end. <br /> Sand shaded areas <br /> beforeapplyingadhesive <br /> A typical containment installation is seen in Figs.7-7 and 7-8.Easy access to the primary <br /> joint at one end of the run is achieved by placing the end section of the containment <br /> inside the center section.Similarly,access to the joint at the other end of the primary <br /> line is achieved by placing the other end length of secondary inside the larger center <br /> section.The final configuration is shown in Fig.7-5. <br /> Fig.7-7.Easy access to the <br /> primaryjoints at the ends of I I I I <br /> a run may be achieved by y, <br /> sliding the end containment <br /> sections inside the center — _ <br /> sections as seen here <br /> and in Fig.7-8. <br /> I <br /> Fig.7-8.Access to the joint at the other <br /> end of the line is achieved by placing <br /> the length of secondary inside the I <br /> larger center section.The final <br /> configuration is shown in Fig.7-5. <br /> ! <br /> Fig.7-9.When primary runs tUnexposed <br /> exceed feet I rimary Do not locate primary couplings I I <br /> requiring two or more lengths 1 p „rt_ <br /> of pipe,the primary coupling is in this zone(same both sides)i <br /> located in the center of the run _ <br /> for easy access. <br /> 7 <br />