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SECTION I ♦ elescoping* 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 and the containment pipe. Sanded area must be a CONDARY CONTAINMENT minimum of 3 inches(75 mm) in length. 4. Position the nipples between the new containment el- g System x bow and containment sleeve couplings as shown in Fig. 2.9.5. Note: It maybe necessary to remove addi- erglass Products offers RED THREAD IIA sec- tional sections of the containment pipe as shown in ary containment piping system for use with Smith Fig. 2.9.4 to provide clearance for the coupling. Fiberglass Products'primary piping systems. The telescop- ing pipe, available in 15 and 22-25 ft. lengths, allows com- 5. Bond the elbow and containment sleeve couplings plete(100%) inspection of the primary product piping. into place according to instructions in Part Two, Section 7. When designing or installing a secondary containment system using the recommended Smith Fiberglass Products 2.9.2 Repairing Minor Pipe Damage parts contained in this manual, consult the owner or oil company engineer for approval. Follow the pipe patching instructions in Part One, Section B, of this manual when the damaged area is two inches 3.1.2 Assembly (50 mm) or less in diameter(see Fig. 2.9.6). Information in this section must be used in conjunction 2.9.3 Repairing Extensive Pipe Damage with Parts One and Two,installation instructions for pri- mary and secondary containment piping. When damage is less than two inches (50 mm) long,but more than two inches around the circumference of the 3.1.3 Description pipe,the following repair procedures should be followed: The product pipe is contained by three pieces of contain- If the pipe is buried, excavate a working area large enough ment pipe. The three sections of containment pipe Ion- to allow for repairs to be made. A secondary containment silt of two pieces of pipe that are one size larger than the sleeve coupling should be used to make this type of repair. product pipe and one piece of pipe that is two sizes larger Containment sleeve couplings are 14 inches(350 mm) than the product pipe. Use of this "nested pipe"allows long;therefore, do not remove more than 7 inches (175 "telescoping" one pipe section into the adjoining section. mm)of containment pipe. Therefore,the entire product pipe is exposed for inspec- tion. Caution: When cutting out extensive damage in the con- tainment pipe (only),be extremely careful not to damage 3.1.4 Installation the internal product piping. To complete the system, it is necessary to install two con- t. After cutting free the damaged section of containment centric reducers that connect the two different sizes of pipe(no more than 7 inches/175 mm long), slit the containment pipe. Installation procedures such as surface section of pipe in half and remove. preparation, adhesive application, and so on, are shown in Part Two. 2. Using a sander, coarse file, or 30-40 grit emery cloth, remove surface gloss from both ends of the pipe. Possible configurations for a telescoping pipe system are Sanded area must be a minimum of 3 inches(75 mm) shown in Fig. 3.1.1 and Table 3.1.1. The length of the in length. If contaminated, clean the sanded surfaces containment pipe is determined from these formulas and with solvent. the constants"X"in Table 3.1.2. Refer to Fig. 3.1.1. 3. Mix the adhesive with filler. Assemble and bond the containment sleeve coupling into place, and heat cure the bond. See next page. . . 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. *U.S.Patent No.4,805,444 RED THREAD IIA Pipe Sr Fittings 00 31