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Secondary Containment System Installation fiNfa, Cid` A11p 5 containment open systems with air to the equivalent static FFR SiECONOARl'CONTAli lrXT pI1 N head test pressure listed in Table 1.The pressure should be telt on the system for a minimum of one hour. The test pres- Secondary containment piping,3"and 4"(75 mm and 100 sure should not exceed the pressure rating of any component mm)diameter sizes,can be pressure tested by installing an in the piping system. It is the responsibility of the installer or in-line tee with a pressure gauge and a nipple in the 3/4" customer to temporarily seal the system for testing. threaded outlet of a termination fitting. if the test piping is to be installed temporarily,use care not to over tighten when in- Test Pressure For open System stalling the steel pipe threads. Fiberglass threads may be Feet of Head* Test Pressure si damaged when removing the steel threads if over tightened. 2' 1.0 Use soft-set,non-metallic thread dope only. 4' 2.0 6' 2.5 Smith Fibercast recommends testing 3"and 4"(75 mm 8' 3.0 and 100 mm)secondary containment piping systems with 10' 4.0 air at pressures not F 12' 5.9 to exceed 10 psig *Highest point in system minus the lowest Re.(0.069 MPa). The caa point in system. most convenient — place to introduce ' These test procedures are designed specifically for a Smith air for the contain- Fibercast system. Smith Fibercast is not responsible for any ment piping pres- a damage to"other"products in the systems such as rubber sure test is at the boots,hoses etc. Please contact the manufacturer of any threaded outlet lo- t®o°s$ P,> non-SF products for a maximum test pressure and time. Do cated on the termi- not exceed SF recommendations. nation fitting near the underground storage ` tC1t # S tank. It is advanta- geous to leave the system pres- For damaged pipe and for leaking joints,Smith Fibercast surized until the installation is completed in order to moni- recommends only the repair methods listed below. Leaks for for possible damage to the containment piping system can occur if secondary contain- during additional construction. ment joints are not properly bond- The low pressure and low volume of the secondary ed. Upon completion of required ° containment piping system makes this air test a safe pro- repairs and before putting the line , cedure if normal safety precautions are followed. Refer to back into service,always pressure , air test safety precautions on pages 13-14. test the repair work according to the procedures on this page, to NOTE: 6"(150 mm)secondary containment piping is not UL assure the integrity of the system. Listed,but may be air tested when normal safety precautions A Replacing Leaking Clam Shell Secondary are followed. Containment Fittings Test procedures f `9n Service"Secondary Containment (Do not use this procedure for containment crossovers.) L Piping Systems To Include Open and Closed Systems. Example: 90°Secondary Containment Elbow — Secondary Containment piping systems can be tested after the line has been installed and in operation for a period of When cutting out and replacing time. All systems must be shut off before testing. It is recom- a secondary containment fitting, mended that where possible,the air-input valve be in different be careful not to cut the internal ®i' -- location the the pressure gauge. Please read and under- primary product pipe. . stand all safety instructions and considerations in the 1. Dissect the secondary con- Smith Fibercast Installation Manual No.82160 before tainment fitting and the i testing. secondary containment pipe around its circumfer- Closed System ence as shown by the ar- Smith Fibercast recommends testing 3"and 4"secondary rows. Remove the contain- containment open systems with air at pressures not to ex- ment elbow. ceed 10 psig. Pressure Should be left on the system for a 2. Create a pipe nipple at minimum of one hour. The test pressure should not exceed least 7 inches (180 mm) the pressure rating of any component in the piping system. long on either side of the joint by making another cut Open System(gravdy drain) around the circumference Smith Fibercast recommends testing 3"and 4"secondary 25 installation instructions