INSTALL 2019 - Laserfiche WebLink

Home Browse Search

Flexible Underground Piping ManuaTI materials. 13.2 Cold Weather Pipe Handling OPW-FCS's flexible piping can be installed in ambient temperatures as low as zero degrees, provided that the flexible piping has been sufficiently warmed prior to unrolling. If the pipe is unrolled and straightened while it is warm, _ it will cool in a straighter position ^, making it easier to install. For cold weather installations where the ambient temperature is below 40° F (5° C), it is recommended that the piping cartons be placed in a warm room for 8 hours directly prior to installation. If this is not possible, then a small hole should be cut in the top center of the lid of the carton for insertion of the nozzle of a conventional hair dryer. For piping reels, place a tarp over the reel and then insert the hair dryer nozzle directly into the end of the piping. If this pipe warming procedure is used, do not use the first 12" of the pipe due to possible damage by the hair dryer. Depending on the ambient temperature, it may take up to an hour to warm the roll of piping sufficiently. 13.3 Flexible Pipe Measuring When measuring the distance between containment sumps or pans to determine the proper length of a flexible pipe section to be installed, it is important to consider that the pipe is flexible and will not be installed perfectly straight. A slight weaving of the pipe in the piping trench is recommended to compensate for expansion and contraction. The recommended measuring and cutting procedures for the flexible piping are described below: 13.3.1 Direct Pipe Burial Applications When measuring for direct burial of flexible piping, the measuring points will be from the face of one adapter/ fitting to the next. If swivel couplings and fittings are used, subtract 1" to allow for the length of the two pipe couplings and cut the piping to that length. For coax application, no modification to the measurement is necessary. 13.3.2 Access Pipe Burial Applications For Applications using Access Pipe, measurements must be taken through the Access Pipe to insure proper length. Feed the measuring tape through the Access Pipe and measure the distance from the face of the one adapter/ fitting to the next. If swivel couplings and fittings are used, subtract 1" to allow for the length of the two pipe couplings and cut the piping to that length. For coax application, no modification to the measurement is necessary. See Access Pipe installation instructions for complete information and installation steps. 13.4 Flex Pipe Cutting When cutting the piping into pipe sections, cut the pipe at the measured cut mark using the pipe cutter tool. This cutting tool is designed to make clean and even cuts in the piping. Clean and even piping cuts are necessary for the proper installation of the OPW-FCS pipe couplings. 11 F/ex1N©R KS EV OGW FUELING CONTAINMENT ETETEME 13.4.1 Cutter Positioning Mark the pipe where it is to be cut. Next position the blade of the pipe cutter over the mark. 13.4.2 Blade Activation Squeeze the handles up and down to activate the movement of the blade. Continue until the blade will no longer I continue to activate. This procedure will cause the pipe to slightly compress. 13.4.3 Pipe Cutting Rotate the entire pipe cutter 1/4 turn to permit the blade to penetrate the wall of the pipe. Continue to squeeze the handles up and down to complete the entire pipe cut. Inspect the cut to make sure it is even. NOTE: Do not rotate blade more than 1/4" turn. Inspect edge of cut and inside of piping after cutting for any signs of damage. 13.5 Stripping Containment Jacket In order to install the swivel pipe coupling to the end of a double wall pipe section, it is necessary to strip off small sections of the outer stand-off containment jacket. The removal of this section of stand-off jacket permits the installation of the coupling or clamp which fits on the outside surface of the primary pipe section. 13.5.1 Strip Length Setting There are two sets of holes on the body of the jacket cutter for the installation of a "stop pin" used to set the length of the jacket to be cut off. NOTE: The secondary jacket is not removed when using coax couplings. 13.5.2 Pre -stripping l Raise and turn the handle to 45 degrees so the blade will be above the surface of the pipe. 13.5.3 Circular Cutting i Insert the end of the pipe section completely into the jacket cutter. Make sure the pipe bottoms against the stop pin. Next lower the handle so that it is perpendicular to the body of the jacket cutter. Rotate the cutter around the pipe two or three times to make a complete radial cut on the secondary jacket. Note: Pipe must bottom out against stop pin to insure proper length of jacket is removed.