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0 0 Secondary Containment System Installation Alternate Termination Termination ofthe secondary containment piping system atthe storage tank is accomplished using atermination fitting with 3/4" female NPT threaded outlet. See figure below. The 3/4" threaded outlet allows easy access for pressure testing of the secondary containment piping system and may also be used as an access for a leak detection prove. TABLE 13. Termination Fitting Connections (1) A special coupling with controlled O.D. may be obtained for use with the termination fittings and threaded fittings. SECONDARY CONTAINMENT REDUCERS In-line secondary containment pipe size reductions are made using a concentric reducer. Reductions can be made from 6" to 4" (150 mm to 100 mm) and 4" to S' (100 mm to 75 mm). Both ends of the concentric reducer are bonded to scarfed end of pipe. For secondary containment piping installations requiring intermediate access stations for visual or electronic leak detection, several sizes of reducing saddles are available. See Bulletin No. 2101 for saddle sizes and descriptions. Note: If connecting components extend to the surface where the assembly can be subjected to bending forces, flexible connectors (such as flexible hoses) must be used to eliminate bending stress. Containment saddles must be installed prior to bonding and testing the product piping. Use adhesive when bonding saddles to the pipe. Procedure for installing secondary containment saddles: Locate saddle on pipe and mark around saddle base. Use a No or rough sandpaper (40 grit or less) to remove al surface gloss from the pipe O.D. where the saddle is to be bonded. Use circular or random pattern during sanding to eliminate grooves on the pipe surface. • After sending, kx*e saddle on pipe and mark hole to be cut in pipe. Using pillot drill and a fine-tooth circular hole saw, cut a hole of the same size as the outlet of the saddle. Do not force the cutter or it will fray the edges of the hole. • All bonding surfaces must be tee of contamination. • Apply a heavy coat of adhesive to the O.D. of the pipe, I.D. of the saddle, and the edges of the pipe wall exposed by the hole. • Place Me saddle over the hole and clamp with two hose damps. Using a large screw driver, hand tighten the clamps, alternately until secure and adhesive squeezes otA al the i. the saddle. This will ensure the pipe O.D. conforms to the I.D. of the saddle. The damps froy be left on or removed after this bond has cured and after the flexible connector is installed in the outlet. CAUTION: Product pipe may be under pressure if the testing has been completed. Do not attempt to install a saddle on the containment pipe if the product piping system has been installed and tested. 20 Small End Fits Termination Large End Fits (Male threaded Part Fitting Size (Pipe) adapter or Number (In./mm) (In./mm) coupling) 012030-236-3 3 x 2 3 2" scarfed with tap adapter (1) 012030-235-3 75 x 50 75 50 mm without tap adapter 012040-236-3 4 x 3 4 3" scarfed with tap adapter(') 012040-235-3 100 x 75 100 3" scarfed without tap adapter(') 012060-234-7 6 x 4 6 4" scarfed with tap adapter(') 012060-235-7 150 X 100 150 100 mm without tap adapter (1) A special coupling with controlled O.D. may be obtained for use with the termination fittings and threaded fittings. SECONDARY CONTAINMENT REDUCERS In-line secondary containment pipe size reductions are made using a concentric reducer. Reductions can be made from 6" to 4" (150 mm to 100 mm) and 4" to S' (100 mm to 75 mm). Both ends of the concentric reducer are bonded to scarfed end of pipe. For secondary containment piping installations requiring intermediate access stations for visual or electronic leak detection, several sizes of reducing saddles are available. See Bulletin No. 2101 for saddle sizes and descriptions. Note: If connecting components extend to the surface where the assembly can be subjected to bending forces, flexible connectors (such as flexible hoses) must be used to eliminate bending stress. Containment saddles must be installed prior to bonding and testing the product piping. Use adhesive when bonding saddles to the pipe. Procedure for installing secondary containment saddles: Locate saddle on pipe and mark around saddle base. Use a No or rough sandpaper (40 grit or less) to remove al surface gloss from the pipe O.D. where the saddle is to be bonded. Use circular or random pattern during sanding to eliminate grooves on the pipe surface. • After sending, kx*e saddle on pipe and mark hole to be cut in pipe. Using pillot drill and a fine-tooth circular hole saw, cut a hole of the same size as the outlet of the saddle. Do not force the cutter or it will fray the edges of the hole. • All bonding surfaces must be tee of contamination. • Apply a heavy coat of adhesive to the O.D. of the pipe, I.D. of the saddle, and the edges of the pipe wall exposed by the hole. • Place Me saddle over the hole and clamp with two hose damps. Using a large screw driver, hand tighten the clamps, alternately until secure and adhesive squeezes otA al the i. the saddle. This will ensure the pipe O.D. conforms to the I.D. of the saddle. The damps froy be left on or removed after this bond has cured and after the flexible connector is installed in the outlet. CAUTION: Product pipe may be under pressure if the testing has been completed. Do not attempt to install a saddle on the containment pipe if the product piping system has been installed and tested. 20