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with a primer applied in accordance with the tape manufacturer's recommendations. 2 The primer shall be Minnesota Mining "Scotchwrap Pipe Primer", or equal. 3 4 3. After cleaning and priming, the piping shall be spirally wrapped with the pressure 5 sensitive tape of the proper width for the pipe size on which it is being used, as 6 recommended by the manufacturer. The tapes shall be tightly applied with a 1/2 7 inch minimum uniform lap, free from wrinkles and voids. Approved wrapping 8 machines may be used. Tape shall be Minnesota Mining "Scotchwrap" No. 51, or 9 equal. ,o 11 4. The field joints and fittings shall be covered as specified for wrapping pipe, except 12 that a nominal 10 mil thick tape having a maximum width of 2 inches shall be used 13 for fittings. Two thicknesses of the tape shall be applied to the fittings to provide ' 14 a covering 20 mils thick over all surfaces. The tape shall be applied with adequate 15 tension so that the tape will conform and adhere tightly to all surfaces of the fitting, 16 without air pockets. "Scotchfil", or equal, shall be used to fill voids, flange faces 17 around bolts, and other irregular surfaces, to provide a smooth even surface for the 18 application of the tape wrap. Pipeline flanges and unions shall be completely 19 wrapped. Where valves are in the pipelines, the pipe wrap shall cover the pipe 20 flange and extend over the outer edge of the valve flange or the threaded portion 21 of the valve body. The unwrapped surfaces of the valves shall be given two heavy 22 coats of a coal tar enamel conforming to AWWA Specifications C-204. Adequate 23 drying time shall be allowed before backfilling. 24 2s 28 5. Wrapped pipe shall be handled and stored in a manner to protect the wrap from 27 damage. It shall not be dropped, walked on, rolled, or handled in any manner that 28 might damage the wrap. Any skids or supports for temporary storing or holding of 29 wrapped pipe shall be wide and padded to prevent cutting of this wrap. Where it 30 is necessary to handle wrapped pipe with slings or cradles, they shall be of wide 31 rubber or canvas. 32 33 34 PART 3: EXECUTION 35 36 3.01 INSTALLATION 37 1 38 A. Pipe cutting threading and iointinq: Pipe cutting, threading and jointing shall conform to 39 the requirements of ANSI B31.1. 40 41 3.02 SUPPORT 42 43 Pipes shall be adequately supported to prevent sags, kinks, or other deficiencies in 44 appearance of strength. Additional supports shall be installed to provide adequate 45 support, whether or not indicated on the drawings. No pipe shall be left unsupported 46 wherever a change in direction of line of flow takes place. Supports shall meet the 47 requirements stated above, but in no case shall the distance between supports exceed 48 those specified in Section 15094. 49 50 51 END OF SECTION STEEL PIPE 042894 15051-5