Document DML8XomDk1opxmoZmM2JnGgaO

PLAINTIFF'S EXHIBIT CertairiTeedlH Technical Bulletin March 16, 1981 FOR INTERNAL USE ONLY TO: All A/C Technical Bulletin Binder Copyholders J.R. Alley Q Gl FR: RE: WHEELER PILOT POP CUTTER FOR A/C PIPE MODEL U&91 Recently, our Research and Development Department at Blue Bell, Pa. conducted tests to evaluate the subject pop cutter for use with A/C Pipe. The cutter used for testing was model If5591 as it is designed for use with A/C pipe up to 24" diameter. The test results indicate that the model K5591 pop cutter performs satisfactorily on our A/C Sewer and Pressure Pipe. From the data gained through the test program, it can be assumed that the cutter can be used for our entire range of sizes and classes of pipe. The amount of debris caused by the cutting action is very small and air sampling results indicate fiber release is well within the current O.S.H.A. regulations. At least one cut was made on 6" Class 5300, 8" Class 150, 12" Class 150, 16" Class 3300, 20" Class 150 and 24" Class 2400 pipe. In cutting the sewer (thin wall) pipe, it was necessary to pop twice for each cut taking the slack out of the chain between pops. Cutting pressure pipe was much simplier requiring only one pop. The model ff5591 cutter is quite cumbersome when cutting small diameter pipe. There are smaller model cutters available to cut smaller diameter pipe that would make the cutting easier, but these cutters were not tested. After each cut the pipe sec tions were examined using a magnifying glass and black light magnetic particle inspection and no visual damage or cracking was observed. Crush tests were conducted on the 6" Class 3300 and 8" Class 150 pipe sections. Hydro burst tests were conducted on the 8" Class 150. Results of the crush and hydro burst tests indicated no loss of strength of the pipe due to the pop cut ting process. BULLETIN: if39 DATE: 3/16/81 CTD000073 WHEELER PILOT POP CUTTER 2- - March 16, 1981 The pop cutting operation was monitored for airborne duet and particle collection to document the exposure created. The fiber count of the air samples taken in the immediate vicinity when cutting 6" sewer pipe and 8" pressure pipe was 0.07 to 0.08 fibers per cubic centimeter which is well within the current O.S.H.A. permissible limit of 2 fibers per cubic centimeter. The weight of the debris from cutting the pipe sections varied from 0.25 to 0.50 grams for the 6" sewer pipe and 0.55 to 1.45 grams for the 8" pressure pipe. This is approximately 1% of the debris that would be generated from a cut using 1/8" abrasive wheel. The pop cutter is one of the methods of cutting A/C pipe in the ACPPA 's "Rec ommended Work Practices for A/C Pipe" manual. Attached for your information is a copy of Wheeler's Brochure describing the pop cutters that are available. Attachment CTD000074 FOR ASBESTOS-CEMENT, VENT PIPE AIR DUCT, CONDUIT, TELEPHONE DUCT, SEWER PIPE AND PRESSURE PIPE a /> if.r. 2990 HYDRAULIC CUTTER 590 MANUAL CUTTER SNAP CUTS PRODUCE LITTLE ASBESTOS-CEMENT DUST1 CAPACITIES CHART X--Means tool will cut Indicated size of Asbestos-Cemenl, Vent, Conduit, Air Duct, Telephone Duct, Sewer Pipe. 0--Means tool will cut indicated size ot Asbestos-Cement Pressure Pipe. SIZE OF PIPE 2" 3" 4" 5" 6" 8" 10" 12" 14" 15"-20" 24" 24"-36" 490 or 590 MANUAL X X xo xo xa 1790 X X xo xo xo xo 2990 x X xo xo xo xo X X X 3890 XO X xo xo xo xo xo X X 5590 xo xo xo xo xo xo xo xo xo X 5591 xo xo xo XO xo xo xo xo XO X To obtain the exact Model No for a given job. add the maximum diameter to bo cut ts the toot number. For example, a 2990-15 has sufficient chain to cut pipe fbr&sx:?' 15" diameter A 3690-24 has chain to cul 24" diameter pipe, etc E CERTAIN AIL TOOLS ARE OPERATED UNDER O. S. H. A STANDARDS Wear Hard Hat! Newf approach pip* cutter head when pressure it applied. CTD000075 Form No. AS2C