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8 Bonding containment B20 and RP34C Pot Life and Cure Times(5OZ)piping Ambient Pot Life_ _Minimum Cure Time1,2 Temperatures B20 _ RP34C_ -_ RP34C ® ® ® ® (°F) (°C) (minutes) (minutes)(hours) (hours) 40 5 70 — 12 _ 65 18 40 30 5 10 75 24 30 25 4 4 - - 95 35 20 12 3 3 1) An external heat source must be used to cure B20 atlhesive at temperatures below I o o a a 40T WC)and RP34C adhesive at temperatures below 60T(16°C).The adhesive antl the bonding surfaces should be warmed to 50T(10-C)before mixing and ® ® ® applying the adhesive.Adhesive may be cured using an Ameron Chem Cure Pakc (US Pat.No.3,475,239)or an Ameron-approved electric heating blanket. 2) The minimum joint cure time must elapse prior to pressure testing. Fig.8-2. When installing containment couplings with an Ameron Rivetool,always alternate from side to side asindicatedabove Place the end of the Rivetool over the rivet stem and squeeze the trigger.The to assure uniform tension on both sides of detached stem will fall of its own accord out of the Rivetool. the lifting. • Whether using the Rivetool or nuts and bolts to join containment couplings, always make up rivets or bolts by alternating from one side to the other as shown r--------------1 inFig.8-2 to assure uniform tension on both sides of the fitting.Similarly,always Do not move or step on the I make up the inside rivets or bolts on tees and elbows before closing those on the containment piping before the I outside;make up the large end of concentric reducers before the small end. l adhesive is cured as this may I C-clamps may be removed as soon as the rivets or bolts have been made u t is disturb the joints enough to I p.i cause leaks. I not necessary to wait for the adhesive to cure. L—————————————J Always use genuine Ameron rivets:they are designed to provide optimal closing tension based on the dimensions of the containment fittings.Use of substitute rivets may yield unpredictable results. • When using bolts,always tighten them stepwise to provide uniform make-up between the fitting halves. Assembly of 6-inch containment using older fittings • Apply a uniform layer of Ameron RP34C adhesive at least'h inch thick to all flat, sanded sealing surfaces,the sanded end of the containment pipe and to the sanded radius of the fitting where the containment pipe will fit. • Use wing nuts or conventional bolts to close 6-inch containment fittings. Containing flexible Flex connectors connecting the piping system to the shear valves at dispensers may connectors be contained using either hard piping or a containment boot. • In the hard piping configuration,the connector is contained using standard containment fittings and short nipples.The containment piping terminates at a 1'12 inch galvanized nipple threaded into the shear valve as shown in Fig.9-1. • Ameron containment boots are designed to continue the containment from the containment piping directly to the shear valve,The flexible boot is joined to the piping and the shear valve with stainless steel clamps provided with the containment boot. Containing flex connectors with hard piping 1) Screw a short 11/2-inch galvanized nipple and a galvanized coupling into the shearvalve,making sure that the nipple is long enough to accommodate the small end of a 3 x 1'/2-inch containment reducer coupling. 2) Terminate the product line with a 2-inch fiberglass sleeve coupling. Dualoy 3000/L 2-inch couplings are 6'/4 inches long.If using the older 8-inch long sleeve coupling,cut 1'/2 inches off one end.Bond a 2 x 1'12-inch threaded fiberglass bushing into the fiberglass coupling.If using the older style coupling, bond the bushing into the cut end. 3) Bond the coupling to the fiberglass pipe.Allow the adhesive to cure before screwing the flex connector into the fiberglass bushing.Use non-hardening thread sealant. 11