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SECTION 7 SMITH ADHESIVE BONDING AND CURING 2.7.1 Introduction sive kits. One bag of filler is containment fitting. Liberally coat Before bonding the two-piece required for each adhesive kit. the flanges (flat bonding surfaces) containment fittings, the installa- Before adding the filler to the of both halves of the fittings with tion procedures should be reviewed mixed adhesive, be sure both the adhesive (1/16-inch/1.6 mm with the installation crew members. adhesive base and hardener are minimum thickness). See Figure In order to maintain the efficiency thoroughly mixed together. All of 2.2.4• Next, apply a thick coating of the installation, a minimum of the filler in the bag must be used. (1/16-inch/1.6 mm minimum) of three workers is recommended: The thickened adhesive may be adhesive to the scarfed or sanded one worker to mix and apply the lierdst it peither thn the brush or surfaces of the pipe ends. adhesive to the secondary con- 2.7.3 Assembling and bolting tainment fittings, and the two Refer to Table 2.7.1 for the remaining workers to assemble number of containment fittings Use the bolts,nuts,and washers to and bolt the fittings together. that can be bonded per adhesive assemble the fittings on the pipe. For alcohols and alcohol-gasoline kit. Note that a flat washer is required mixtures, use only DS-8000 series Note: Number of containment fit- on both halves b the fittings if hex adhesives manufactured by Smith ting bonds per adhesive kit is head bolts are being used. Only one washer is Fiberglass Products. All bonds based on using filler and applying required between made with DS-8000 series adhe- a 1/16-inch (1.6 mm) minimum the fitting and the nut if carriage sives must be heat cured. For pet- thickness of adhesive to both ure type bolts are being used. See Fig- roleum products, use DS-7000 halves of the fitting and to the pipe 2.2.4. Tighten the nuts and bol series adhesives. Follow the adhe- ends. bolts alternately and with equal force. A variable torque impact sive mixing instructions that are 2 7 2 Bonding wrench will greatly increase the packaged with each kit. FILLER efficiency of this operation. MUST BE ADDED TO THICKEN After cleaning all sanded surfaces THE ADHESIVE.The filler is pack- with the cleaner supplied in the Make sure that the pipe fits snugly aged in premeasured quantities for adhesive kit, apply a thick coating into the socket ends of the fittings use with DS-7014 or DS-8014 (1/16-inch/1.6 mm minimum) of and that there are no gaps between and DS-7069 or DS-8069 adhe- adhesive to the socket area of the pipe ends and fitting sockets. TABLE 2.7.1 NUMBER OF CONTAINMENT FITTING BONDS PER KIT DS-7014 or DS-8014 DS-7069 or DS-8069 Type of (Approx. Fittings per Kit) (Approx. Fittings per Kit) Fitting 3"(76 mm) 4" (102 mm) 3" (76 mm) 4" (102 mm) 6" (152 mm) 90° Elbow 2 1 3 2 1 450 Elbow 2 1 3 2 1 Tee 1 1 2 2 1 Coupling 2 1 3 2 1 Termination Concentric Reducer 3 2 4 3 1 31