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INSTALLATION ]] Dualoy 3000/L. 1 Secondary Containment System MAY 1 3 199 DESCRIPTION The Ameron Secondary Containment system ishlgge (double wall) Underwriters Laboratories listed Ameron /L) for handling flammable liquids. The Secondary Containment system consists of the next larger size pipe and custom fabricated fittings that can totally contain primary piping (product, vent, vapor recovery, etc.) from shear valve, under dispenser, to the product storage tank. The system is designed to allow for close make-up and ease of installation. (Refer to Ameron Bulletin 7501 "Installation Practices for 2 through 6- inch Pipe Systems" for general installation instructions for UL listed pipe.) If needed, contact Ameron Engineering Department for assistance in designing Secondary Containment systems. For 3", 3'/x" and 4" containment systems, C-20HT adhesive should be used and SC- 10 adhesive should be used for the 6" assembly. Both adhesive kits are two part amine cured epoxy resin systems designed to permanently bond containment fittings on fiberglass reinforced epoxy pipe. Each adhesive kit contains resin, hardener, mixing stick, application brush, detailed instructions, and towels. ON SITE INSPECTION Primary piping inspection is especially critical on double wall projects. Damage • caused by shipping or handling is not visible once piping is encased. Damaged pipe can be identified by localized discoloration of piping, crazing, and deep scratches or gouges. (Refer to Ameron Bulletin 7501.) Inspect Secondary Containment system piping art fittings for damage. Assure that sufficient nuts, bolts, washers and adhesive are available to join system together before starting installation of Secondary Containment system. TRENCHING, BACKFILL The trench bottom must be graded with a 6" minimum of sand, pea gravel or AND BEDDING crushed stone to provide firm, even support for the bottorh of the pipe. The trench bottom must be free of hard or sharp objects that could damage the pipe or fittings and should have an even slope of from the dispensers back to the tanks. At new facilities, island forms, pump or dispenser boxes and impact valves should be staked in place before proceeding with piping. A minimum of 12 inches of sand, pea gravel or crushed stone is recommended between the top of the pipe and the ground surface to minimize the likelihood of damaging the pipe. In cases where space does not permit 12 inches of cover, use the following recommendations as a guide: When the pavement is reinforced concrete, at least 4 inches thick, a minimum of 4 inches of sand, pea gravel or crushed stone is recommended between the top • of the pipe and the bottom of the concrete. •