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0 <br /> Bonding containment Adhesives for containment piping <br /> piping Two different amine-cured epoxy-resin adhesives are used to install Ameron contain- <br /> ment piping.Ameron PSX•20 or PSX•34 adhesive is used for 3,4 and 6-inch <br /> Apply a heavy Containment pipe and fittings. <br /> layer or bead <br /> Bonding and testing contained primary piping <br /> ofadhesiveto <br /> shaded areas Bond the rima only after the containment <br /> primary y pipe has been placed over it and all <br /> adjustments have been made for clearance and interference. <br /> • <br /> Install inside Follow standard adhesive procedures.Do not disturb the primary lines before the <br /> nuts and bolts adhesive cures. <br /> first Primary system bonds must be visually inspected or soap tested before installing <br /> • <br /> containment fittings. <br /> Sealing containment piping <br /> Holes on some Bond containment only after primary lines have been tested and inspected. <br /> older containment All bonding surfaces must be free from water,soap,oil,grease,dirt and the like <br /> fittings may need to 9 P, <br /> be enlarged using a and should be lightly sanded before applying adhesive. <br /> 17g4 drill bit before <br /> inserting bolts Take care that each leg of the containment pipe goes into the fitting straight and is <br /> not disturbed until the adhesive has cured. <br /> Fig.8-1. Containmentfittingsseal <br /> effectively onlyifthe shaded areas Assembly of 3,4 and 6-inch containment fittings <br /> between the holes in the flanges and the <br /> inside are well covered with adhesive. Apply a uniforin,heavy coating or heavy bead of adhesive to the inner half of <br /> Adhesive applied to the outerhalfof containment fittings flanges(Fig.8-1),to the sanded radius of the fitting where the <br /> containment frttfng flanges will serve no pipe will fit,and to the outside of the containment pipe.Apply adhesive to both <br /> purpose unless the holes themselves are half-Shells. <br /> sealed.For this reason,and to conserve <br /> adhesive,it suffices to apply adhesive only Carefully put the containment fitting,with pre-inserted propellor nuts,around the <br /> to the innerhalfof the flanges. containment pipe.Make sure the pipe is not cocked or misaligned in the fitting. <br /> r®® ®®®®®®®®, Containment fittings are then joined with bolts.Insert and begin threading each <br /> 1 The sole purpose of bolts is to hold 1 bolt into the pre-inserted nut by hand.A nut driver or powered device can be used <br /> 1 containment fitting halves together while 1 to assemble the bolts.If a power tool is used to tighten the bolt,confirm tightness <br /> 1 the adhesive cures. 1 of each bolt with a nut driver. <br /> 1 The performance of joined and cured 1 <br /> 1 Ameron fiberglass pipe systems 1 <br /> 1 depends in no way on bolts or any other 1 PSX•20&PSX•34 Pot Life and Cure Times(5-oz) <br /> 1 metallic closure devices. 1 Pot Life Minimum Cure Time1,2 <br /> L®®®®®®®®®®®®®J Ambient <br /> Temperature) PSX•20 PSX•34 PSX•20 PSX•34 <br /> ® p ® ® _ (°F) (°C) (minutes) (minutes) (hours) (hours) <br /> o ..............a 50 10 70 70 12 12 <br /> NR^!4wine•Qe's�'"77 <br /> 65 18 40 35 6 7 <br /> - 75 24 25 25 4 5 <br /> 95 35 10 10 3 3 <br /> 0 1) An external heat source must be used to cure PSX•20 adhesive at temperatures <br /> below 40°F(5°C)and PSX•34 adhesive at temperatures below 60'F(16°C).The <br /> ® ® ® ® adhesive and the bonding surfaces should be warmed to 50`F(10°C)before mixing <br /> and applying the adhesive.Adhesive may be cured using an Ameron Chem Cure <br /> Pak®(US Pat.No.3,475,239)or an Ameron-approved electric heating blanket. <br /> Fig.8-2. When installing containment 2) The minimum joint cure time must elapse prior to pressure testing. <br /> couplings,always alternate from side to side <br /> as indicated above to assure uniform tension <br /> on both sides of the fitting. <br /> • Always make up bolts by alternating from one side to the other as shown in <br /> r®®®®®®®®®®®®®, Fig.8-2 to assure uniform tension on both sides of the fitting.Similarly, <br /> 1 Do not move or step on the 1 always make up the inside bolts on tees and elbows before closing those on <br /> 1 containment piping before the 1 the outside;make up the large end of concentric reducers before the small <br /> 1 adhesive is cured as this may 1 end. <br /> 1 disturb the joints enough to cause 1 When bolts are tight,a bead of adhesive should squeeze out all around the <br /> 1 <br /> leaks. 1 <br /> leaks. bond line. Wipe off excess with the curved comer of the spatula or a gloved <br /> L----- ®®J <br /> finger.This also helps remove any surface bubbles that may have occurred. <br /> 8 <br />