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SECTION 8 ♦ Testing Recommendations for Seco Bary Containment Piping FIGURE 2.7.1 Flexible Connector O 10 prig (0.069 MPa) FIGURE 2.7.2 FIGURE 2.8.1 wrapping a heating collar over the saddle outlet as Smith Fiberglass Products recommends testing 3" and shown in Fig.2.7.2. For outdoor installations,place 4" (75 mm and 100 mm) secondary containment pip- wind shields on both sides of the saddle to prevent heat ing systems with air at pressures not to exceed 10 psig loss. Total cure time must be two hours for saddles. (0.069 MPa). The most convenient place to introduce Allow the saddle to cure and cool down to ambient tem- air for the containment piping pressure test is at the perature before bonding or threading in the side run. Do threaded outlet located on the termination fitting near not use chemical heat packs to cure saddles. the underground storage tank (see Fig. 2.8.1). It is ad- vantageous to leave the system pressurized until the ATIONS FOR SEC- installation is completed in order to monitor for possi- ble damage to the containment piping system during Prn additional construction. The low pressure and low vol- ing, 3" and 4" (75 mm and 100 ume of the secondary containment piping system pressure tested by installing an makes this air test a safe procedure if normal safety auge and a nipple in the%" precautions are followed. Refer to air test safety pre- tlet of a termination fitting(see Fig. 2.8.1). If cautions in Section 1.7.3. ing is to be installed temporarily,use care not to over tighten when installing the steel pipe threads. Note: 6" (150 mm) secondary containment piping is not Fiberglass threads may be damaged when removing the UL Listed,but may be air tested when normal safety pre- steel threads if over tightened. Use soft-set, non-metallic cautions are followed. thread dope only. RED THREAD IIA Pipe & Fittings — 29