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0 0 <br />Primary Piping System lnstallatior� <br />For damaged pipe and for leaking joints, FGS Smith <br />Fibrrcmst recommends only the repair methods listed below <br />DONOTattempt tonmpairdamaged fittinQn.Always pnemnunm <br />test repair work before putting the line back into service to <br />assure the soundness ofthe repaired section. Contact your <br />local FBSrepresentative for further information. <br />During repair, the pipeline cannot beunder pressure, and <br />the area hobe repaired must bmclean and dry throughout the <br />Pipe Patching <br />Follow these instructions brepair pipe wall damage <br />where the damaged area intwo inches (5Qmm) orless in <br />diameter: <br />• For T pipe, cut the protective mash coveflng and slide <br />away from damaged area. <br />• Cut a length of good pipe long enough to adequately <br />cover the damaged area and extend at least Vvw inches <br />(75 mm) (and preferably 1bur inohes/100 mm) to either <br />side of the damaged area. <br />Damage <br />Repairing Extensive Damage <br />When the damaged area in the pipe wall is larger than <br />two inches (5Omm) km dimn1etmr, fb|kmvthemo instructions: <br />away from damaged area, <br />but mom than two inches/50 mm around the <br />circumference of the pipe), check to we if there is <br />an a-ugg h slack in the <br />If <br />a -rd P-1-111 <br />pressure testing the repair. <br />If the pipe is buried, excavate m working area large <br />enough hoallow for tapering tool rotation. Taper the cut ends <br />of the pipeline and install the sleeve coupling. <br />nipple. This procedure requires sufficient slack in the <br />of several feet. <br />— Cut out the damaged section of pipe, <br />— Taper om and of a piece of pipe at least as long <br />as the damaged section. When tapering. careMly <br />obsem the position of the nipple on the tapering <br />tool. Thils taper will be used as a gauge. Cut this <br />nipple to the proper length in the following steps. <br />— When pipe Is burtul, excavate a working area <br />large enough to allow fbr tapering tool rotation. <br />Taper the cut ends of the pipeline and install the <br />two shove couplings. Cure these joints and then <br />measure the gap between the sleeve couplft& <br />Deterrrdne the proper length of the pipe nipple. <br />This length is the sum of the distance between <br />the two sleeve couplings, the linsertion length of <br />the tapered enift and an adidtional 'wet" make- <br />up length to assure joint lock up. <br />To determine the insertion length of the tapered ends, <br />move one of the couplings to the side and use the end of <br />the repair nipple made hnthe previous step todetermine the <br />dry fit into each bell. (NOTE: The dry fit must bevery tight, <br />Le.unea2x4todrive tha]ointbmgethwrdQ|t|yenouQhthat it <br />indifficult tomepmratejThe total length ofthe repair nipple <br />is determined byadding these two measurements tothe <br />distance between the sleeve couplings and then adding the <br />two make-up dimensions tom Table g. <br />