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Dry fitting secondary Access to primary fittings <br /> containment systems <br /> (cont.) Ameron secondary containment piping provides convenient access to primary fittings <br /> during bonding,testing and inspection by using lengths of 3'/2-inch containment pipe <br /> �Y���s� <br /> t,i 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'/2-inch containment pipe.In a'3 over 2'system,the 3'/--inch containment <br /> section slips over the 3-inch containment pipe as shown in Fig.7-7;in a'4 over 3' <br /> system,the 3'/2-inch containment section slips inside.By manipulating the pipe <br /> sections,ready access to the primary fittings can be achieved. <br /> I I III <br /> Fig. 7-5.Most primary runs can be <br /> contained by three pieces of — — — <br /> containment pipe. — <br /> ® buns of containment piping are closed using <br /> Fig.7-6.Containment reducers are 3'/2 x 3-inch reducing closure pieces in'3 over 2' <br /> furnished with apipe stop to I systems and 4 x 31/2-inch reducing closure <br /> prevent over-insertion of thepipe $ pieces in'4 over 3'systems. <br /> on the large end. <br /> o sand shaded areas <br /> before applying adhesive <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 <br /> a run may be achieved by I I <br /> sliding the end containment <br /> sections inside the center — <br /> sections as seen here <br /> and in Fig. 7-8. <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 i <br /> larger centersection.The final <br /> configuration is shown in Fig,7-5. <br /> Fig.7-9. When primary runs <br /> exceed 20 feet in length,thus Unexposed <br /> requiring two or more lengths ! primary Do not locate primary couplings <br /> of pipe,the primary coupling is in this zone(same both sides) I f <br /> located in the center of the run _ <br /> foreasyaccess. — — — <br /> 7 <br />