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U 11 SECTION 1 Akelescoping* Pipe System 3. Using a sander, coarse file, or 30-40 grit emery cloth, PART THREE • TELESCOPING PIPE SYSTEM remove surface gloss from both ends of the nipples W OW* and the containment pipe. Sanded area must be a N CONDARY CONTAINMENT minimum of 3 inches (75 mm) in length. 4. Position the nipples between the new containment el- bow and containment sleeve couplings as shown in Fig. 2.9.5. Note: It may be necessary to remove addi- tional sections of the containment pipe as shown in Fig. 2.9.4 to provide clearance for the coupling. 5. Bond the elbow and containment sleeve couplings into place according to instructions in Part Two, Section 7. 2.9.2 Repairing Minor Pipe Damage Follow the pipe patching instructions in Part One, Section B, of this manual when the damaged area is two inches (50 mm) or less in diameter (see Fig. 2.9.6). 2.9.3 Repairing Extensive Pipe Damage When damage is less than two inches (50 mm) long, but more than two inches around the circumference of the pipe, the following repair procedures should be followed: If the pipe is buried, excavate a working area large enough to allow for repairs to be made. A secondary containment sleeve coupling should be used to make this type of repair, Containment sleeve couplings are 14 inches (350 mm) long; therefore, do not remove more than 7 inches (175 mm) of containment pipe. Caution: When cutting out extensive damage in the con- tainment pipe (only), be extremely careful not to damage the internal product piping. 1. After cutting free the damaged section of containment pipe (no more than 7 inches/175 mm long), slit the section of pipe in half and remove. 2. Using a sander, coarse file, or 30-40 grit emery cloth, remove surface gloss from both ends of the pipe. Sanded area must be a minimum of 3 inches (75 mm) in length. If contaminated, clean the sanded surfaces with solvent. 3. Mix the adhesive with filler. Assemble and bond the containment sleeve coupling into place, and heat cure the bond. 4. After the repaired section has cured, pressure test the sys- tem following the procedures in Part Two, Section 8. If damage is beyond these repair procedures, immediately contact your local Smith Fiberglass Products' distributor for information and assistance. ffig System a � Wa erglass Products offers RED THREAD IIA sec - containment piping system for use with Smith Fiberglass Products' primary piping systems. The telescop- ing pipe, available in 15 and 22-25 ft. lengths, allows com- plete (100%) inspection of the primary product piping. When designing or installing a secondary containment system using the recommended Smith Fiberglass Products parts contained in this manual, consult the owner or oil company engineer for approval. 3.1.2 Assembly Information in this section must be used in conjunction with Parts One and Two, installation instructions for pri- mary and secondary containment piping. 3.1.3 Description The product pipe is contained by three pieces of contain- ment pipe. The three sections of containment pipe con- sist of two pieces of pipe that are one size larger than the product pipe and one piece of pipe that is two sizes larger than the product pipe. Use of this "nested pipe" allows "telescoping" one pipe section into the adjoining section. Therefore, the entire product pipe is exposed for inspec- tion. 3.1.4 Installation To complete the system, it is necessary to install two con- centric reducers that connect the two different sizes of containment pipe. Installation procedures such as surface preparation, adhesive application, and so on, are shown in Part Two. Possible configurations for a telescoping pipe system are shown in Fig. 3.1.1 and Table 3.1.1. The length of the containment pipe is determined from these formulas and the constants "X" in Table 3.1.2. Refer to Fig. 3.1.1. See next page .. . *U.S. Patent No. 4,805,444 RE