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2. Slit this "patch" lengthwise twice and remove a section so that �^ about three-fourths of the circumference is left. 3. Thoroughly sand the inner surfaces of this patch, and sand a cor- responding area on the pipe around the damaged section. Use SQUEEZE PATCH coarse sandpaper or a bastard file to remove all the gloss from the IN PLACE WITH bonding surfaces. CLAMP 4. Clean both surfaces with solvent from an adhesive kit;, apply ad- "'""�— =�-- hesive to both surfaces; snap the patch in place; then squeeze with - hose clamps, a repair clamp, or stainless steel banding until the _ adhesive hardens. The clamping device may be left on or removed, _ depending on its salvage value. C. Repair on extensive damage. 1. Extensive damage can be defined as damage too long tojpatch or damage all around the circumference, which cannot bepatched. 2. If the damage is local, but all the way around, proceed as' follows: CUT OUT DAMAGED SECTION a. Check to see if there is sufficient slack in the pipe so, that the TAPER CUT ENDS damaged section can be cut out, cut ends tapered, and a sleeve coupling bonded between the tapered ends. 3. If the damaged section is extensive, too large for 2. a. above, or too . •, ••-- ^, large to patch, proceed as follows: a. Cut out the damaged section. b. Taper the cut ends. FIT NIPPLE WITH c. Fit a nipple with sleeve couplings on each end so that it is SLEEVE COUPLINGS slightly longer than actually required to fill the gap. d. Clean all four bonding surfaces, apply adhesive to all surfaces, �,�, •Lf;= and insert the repair section into the line, making certain that all tapers are tightly locked. VII. Adhesives. - A. Working life or pot life is the time it takes for the adhesive to' harden in the mixing can. This is usually measured from the time the hardener and adhesive are first mixed. It is shorter at temperatures above 700 F and becomes longer as temperature drops below 70° F. 1. Working life is affected by the quantity of adhesive as well as temperature. a. Working life in hot weather can be extended by keeping the can cool. 1) Make a cooler by wrapping the can with rags or paper towels, then keep the wrappings wet with water or better yet, some solvent. 2) Cut off the bottom two inches of the carton in which the adhesive kit is furnished. Line the inside with rags or paper towels and wet tfie rags or towels with solvent, then set the adhesive can in the"nest". Do not get any of the solvent into the adhesive can. If this occurs, do not use the adhesive. b. Working life in hot weather can also be extended by spreading the adhesive out into a film. Pourthe adhesive mix out'of the can and spread it out on a clean piece of tin or foil. B. Curing time is the time required forthe adhesive in the assembled joint to harden. External heat is recommended for cure when, ambient temperature is below 70° F. 1. Use a Smith Fiberglass Products Inc. electric curing collar. il Referto Smith Fiberglass Installation Instruction Manual No. 9474, page 12.) 2. Preheating the bonding surfaces and pre -warming the adhesive will speed up the cure in moderately cool weather. i C. The Smith Fiberglass Adhesive Kits for UL pipe, DS -7014 and DS -7024, have a 25 minute working life at 75° F. The recommendation's on their usage are described in the Smith Fiberglass product literature for underground handling of liquid petroleum fuels and in the instruction procedures sheet enclosed in every DS -7014 and DS -7024; adhesive kit. This literature is found in the Smith Fiberglass product catalog or can be obtained by contacting the Smith Fiberglass representative in your area or writing to Smith Fiberglass Products Inc., Little Rock, Arkansas. (Read the instruction sheets enclosed in every adhesive kit.) INSERT REPAIR SECTION INTO LINE, TIGHTLY LOCK ALL TAPERS ADHESIVE CURE so ,. DS7000 35 Series Adhesive i0 F- 10 16 20 26 30 TIME 10 PRESSURE IHOURS) Cure time is dependent on ambient temperature.