COMPLIANCE INFO_1999-2005 - Laserfiche WebLink

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SECTI 2 ♦ System Preparation 1. Determine the length of the primary pipe. Scarf O.D.of pipe so that the fitting halves fit together I 2. Determine the fittings to be used on each end of the 0 when assembled by hand. — + _ primary pipe. Find the corresponding numbers in Table 2.2.1 (X1 for first fitting, and X2 for the second Note: Sanded pipe ends fitting); subtract them from the OAL. This will be the must always fit snugly into length of the containment pipe. the socket of the fitting. Example: If 2" (50 mm)product pipe is 20 ft., 6 in. (6248 mm)long, and you are using a 90° elbow on one end and If there is a gap between the fitting a 45°elbow on the other end, then cut the containment halves when assembled by hand, I pipe 20 ft., 2 in. (6147 mm)long. pipe must be scarfed more. + Calculation: 20'6" -2V (fitting#1, 90°elbow) FIGURE 2.2.2 - 1X" (fitting#2, 45°elbow) =20'2" 2.2.3 Pipe Assembly or The containment pipe must be positioned over the prod- 6248 mm -54 mm (fitting#1, 90°elbow) uct pipe before bonding the product pipe. Pre-installa- -48 mm(fitting#2, 45°elbow) tion of the secondary containment pipe (only) is best ac- =6147 mm complished at the same time the product pipe is dry-fitted together. This will speed up installation and prevent un- WARNING: Since every insertion of the primary piping necessary delays. may vary, dry fit all secondary containment connections to make sure that the insertion is approximately 3". Be Where possible, sure that the containment pipe is not inserted too far into temporarily place the containment fitting. The glossy O.D. of the pipe containment fit- should not be seated in the containment fitting. ting halves around ° ° ° ° the product fit __LZZ - tings. This mea- K Product Pipe sure will help pre- ° ° ° Containment vent foreign Pipe material from en- ° Lay out system X1 tering the contain- with all dry joints ment pipe (see Fig. 2'2'3)' FIGURE 2.2.3 L OAL The containment fittings should be installed and the containment system X2 tested after the product piping system has been tested. — — — — _ Note: Do not leave rocks, pea gravel, sand, or other de- bris in the containment piping system. TABLE 2.2.1 Determining Length of Typically,the length of the containment pipe is deter- Containment Pipe mined from the following formula: L=CAL of product pipe-X1 -X2 Product Coupling, 45° Termination Pipe Size 90°Elbow,Tee Elbow Fitting Where: X1 =fitting#1 (in.) (mm) (in.) (mm) (in.) (mm)', (in.) (inm) X2=fitting#2 2 50 2% 54 1 48 4% 121 Using Table 2.2.1 and Fig. 2.2.4 as a guide, proceed as fol- 3 75 1% 48 2% 57 4% 121'. lows: 4 100 1% 48: 2% 54 6 152 RED THREAD IIA Pipe br Fittings — 23