Document 2jXy4e761px3vd2RLeVXYMv8r

FROM JAMES E. HINES INGOT CASTING DIVISION J.ALCOA TECHNICAL CENTER - B MARIO J. CAPRIO PURCHASING DEPARTMENT PITTSBURGH OFFICE - 19 TO DISTRIBUTION 1979 OCTOBER 31 RE: MOLTEN METAL MARINITE USAGE Tabulated in Table I is the amount of 1219 x 2438-mm (4 x 8-ft) asbestos-containing Molten Metal Marinite sheets reportedly being purchased at each Alcoa ingot plant per year. Although most plants have attempted to reduce their usage of asbestos, there is still a substantial quantity used. The asbestos problem from a health hazard and from the additional costs to Alcoa to comply with OSHA Standards has not diminished. This fact together with Johns-Manvilie's objective to stop production of Marinite products containing asbestos by the end of 1980 should motivate all plants to make a concentrated effort to evaluate the more promising asbestos-free candidates mentioned below. To date two products, Marinite I (Johns-Manville) and Pyrotherm B-2 (Pyrotek, Inc.), have been identified by both Alcoa Laboratories and limited plant trials as promising substitutes for regular grade, asbestos Marinite. Marinite I in the as-received form can be used only in non-molten metal contact areas (i.e., trough covers). However, with a simple preheat to approximately 149C (300F) to remove atmospheric moisture, it can be used as distributors or floats. An experimental heat treatment to 290C (550F) has been scheduled with Johns-Manville. At this exposure temperature, the board has provided good results as basins, troughing, feedboards, and dams. Large plant trials are scheduled initially at Massena, Tennessee and Warrick. Pyrotherm B-2, on the other hand, is supplied in the heat treated condition and can be used as a direct MM Marinite substitute. Pyrotek locations stocking this board are listed in Table III. In Table II are the trial amounts of 25.4-mm (1-inch) and 50.8-mm (2-inch) sheets requested by the plants, along with the product suggested for evaluation. Some plants have already made these substitutes. They are indicated by asterisks. DISTRIBUTION 1979 OCTOBER 31 Page 2 It is hoped that each plant makes known their testing so that information can be disseminated to the other locations and the level of activity can be monitored. A frequent updating of the Molten Metal Marinite situation and each plant's progress toward eliminating asbestos will be made. If a plant does not have the recommended asbestos-free candidates on hand or on order, Mr. M. J. Caprio in Pittsburgh Purchasing should be contacted immediately. Any questions, comments, or additions to the attached would be appreciated. Only through a cooperative effort can asbestos be replaced. JAMES E. HINES JEH/HJC:gih / Attachments - 3 (Distribution - Page 3) MARIO J. CAPRIO DISTRIBUTION 1979 OCTOBER 31 Page 3 PLANT METALLURGICAL ENGINEERS C. T. Barger, Jr. - Badin Wks. T. F. Arnold - Cleveland Wks. A. F. Maloit - Corona Wks, R. J. Stokwisz - Davenport Wks. D. 0. Collins - Lafayette Wks. D. E. Scott - Lafayette Wks. M. Scherbak - Massena Oprs. G. G. Owens - Rockdale Wks. G. K. Reichelt - Tennessee Oprs. J. M. Ekenes - Vancouver Oprs. W. C. Harvey - Vernon Wks. D. Fleener - Warrick Oprs. J. B. Gorss - Warrick Oprs. P. C. Scheble - Warrick Oprs. J. E. Gunn - Wenatchee Wks. PLANT PURCHASING H. A. Barton - Badin Wks. T. G. 'Poliak - Cleveland Wks. Shirley Price - Corona Wks. R. W. Murphy - Davenport Wks. R. C. Miessler - Lafayette Wks. E. R. Werner - Massena Oprs. J. R. Fry - Rockdale Wks. J. Taylor - Rockdale Wks. W. S. Zuber - Tennessee Oprs. M. D. Wooden - Vancouver Oprs. J. Heron - Vernon Wks. ' T. A. Innes - Warrick Oprs. D. Lutz - Warrick Oprs. INFORMATION COPIES TO: PLANT SUPERINTENDENTS J. N. Rumble - Badin Wks. M. A. Gambill - Davenport Wks. W. K. Dalton - Lafayette Wks. G. L. McCullough - Massena Oprs. G. L. Williams - Pt. Comfort Wks. T. J. Randall > Rockdale Wks. D. W. Freeman - Tennessee Oprs.-S D. F. Simonic - Tennessee Oprs.-N D. E. Luckett - Vancouver Oprs. M. L. Redhair - Vernon Wks. A. Pearson - Warrick Oprs. R. S. Grundhoefer - Warrick Oprs. (Can Reclamation) E. T. Vanderheyden - Wentachee Wks. C. J. Cox - 3 WPH J. W. Mclntee - 3 WPH H. G. Reavis - AB 23 E. L. Rooy - AB 23 H. G. Sakoian - AB 7 A. J. Sartschev - 3 WPH D. L. Schaeffer - AB 23 J. Damiano - ATC, C T. W. Lee - ATC, D R. E. Spear - ATC, C J. R. Stemler - ATC, C R. E. Miller/R. G. LaBar - ATC, B TABLE I MOLTEN METAL MARINITE USAGE BY PLANT* Badin Davenport Lafayette Massena Rockdale Tennessee Vancouver Vernon Warrick Total Board Grade and Size Regular Grade Header Grade 12.7 mm (0.5 in) 25..4 mm 50.8 mm (1 :inch) ar (2 inch) ' >F 25.4 mm (1 inch) ' 50 /boo 100 / yoo 50 60 fiflO - - 30 Ho -100 headers 5 3-lo 78 ( 178 SOU 225 /y Yoo 300 - 358 n VJTi 150 f Ctt' 100 12 12 3c Y -50 headers 120 3 rYO 240 /3C0 1600 12 936 720 2050 Wenatchee and Point Comfort were not included in this survey TABLE II TRIAL QUANTITIES OF ASBESTOS-FREE BOARD REQUESTED Boards 25.4 mm (1 inch) 50.8 mm (2 inch) Badin Davenport Massena Rockdale Tennessee Vancouver Vernon Warrick 50 Marinite I or Pyrotherm B-2 10 Marinite I 15 Marinite I or Pyrotherm B-2 178 Pyrotherm B-2 5 Pyrotherm B-2 3 Marinite I 12 Marinite I* 120 Pyrotherm B-2 100 Pyrotherm B-2 15 Marinite I 225 Pyrotherm B-2 5 Marinite I 240 Marinite I or Pyrotherm B-2 *Substitutions already in progress TABLE III PYROTEK, INC. LOCATIONS Plant Spokane, HA Carlisle, PA Trenton, IN Address E. 9601 Montgomery Avenue Spokane, HA 99206 Phone: (501) 926*6211 Box 77, RD 1, Claremont Road Carlisle, PA 17013 Phone: (717) 249-2075 Kellwood Drive Trenton, IN 38382 Phone: (901) 855*0104