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C7 <br />:7 <br />SECTION 8 * TeOng Recommendations for Secolary Containment Pipinl <br />FIGURE 2.7.2 <br />wrapping a heating collar over the saddle outlet as <br />shown in Fig. 2.7.2. For outdoor installations, place <br />wind shields on both sides of the saddle to prevent heat <br />loss. Total cure time must be two hours for saddles. <br />Allow the saddle to cure and cool down to ambient tem- <br />perature before bonding or threading in the side run. Do <br />not use chemical heat packs to cure saddles. <br />Flexible <br />FIGURE 2.8.1 <br />Smith Fiberglass Products recommends testing 3" and <br />4" (75 mm and 100 mm) secondary containment pip- <br />ing systems with air at pressures not to exceed 10 psig <br />(0.069 MPa). The most convenient place to introduce <br />air for the containment piping pressure test is at the <br />threaded outlet located on the termination fitting near <br />the underground storage tank (see Fig. 2.8.1). It is ad- <br />vantageous to leave the system pressurized until the <br />installation is completed in order to monitor for possi- <br />ble damage to the containment piping system during <br />additional construction. The low pressure and low vol- <br />ume of the secondary containment piping system <br />makes this air test a safe procedure if normal safety <br />precautions are followed. Refer to air test safety pre- <br />cautions in Section 1.7.3. <br />Note: 6" (150 mm) secondary containment piping is not <br />UL Listed, but may be air tested when normal safety pre- <br />cautions are followed. <br />RED THREAD IIA Pipe & Fittings 1111. 29 <br />