Document 7O85pXK4Z6aoBOe45mROLd18e

FILE NAME: American Electric Power (AEP) DATE: 1973 M a r 26 DOC#: AEP004 DOCUMENT DESCRIPTION: M em o dates subject i t v V c.*) ' J - O / , .* - ' / . , AMERICA ELECTRIC POV/ER SERVICE CORPORATION Q (" [ VvCR SYS March 26, 1973 Asbestos Dust Control Operating Plants from: to: J. D, McAllister C. P. Lugrin - Canton cc:: L. E. Hovi/T. Baker R. F. Bering R. N. Hurt R. E, Burt - Canton A. G. Kehlmen F. V. Sweeney R. w. Reeves/T, T. Frs R. Adams - Gavin L. H. Lieving - Amos R. H. Lawson - Bridgms M.E.D .V. - Section Hes an exten sion to the AEP publication "Program for Control of Asbestos Dust" issued February, 1973 we would like to summarise current operating and new construction status relative to asbestos containing thermal insulations. 1. Starting with Gavin Unit 1 and all following units, "asbestos-free" insulation materials will be spcifie for new construction. . 2 . Amos Unit 3 - only the calcium silicate block and pip covering has asbestos hazard potential (used principal on horizontal pipe and potential traffic damage areas . of equipment). All mineral fiber (mineral wool and g.' 'pipe coverings, blocks, blankets and felts as well as 'insulating cements and finishes are "asbestos-free". 3. Cook Unit 1 and common - all calcium silicate pipe an< block used has asbestos hazard potential, most of Uni* -will use "asbestos-free" calcium silicate. if. 9901-00017244 FORBEs-RkeGen All operating units constructed prior to Amos Unit 3 utilized insulations falling into one or several of tl following asbestos containing categories, and require proper dust control measures when repaired, removed o: replaced: a. Calcium silicates, pipe, block or board Asbestos fiber by weight: % to 20#. Trade names: ICaylo Thermobcstos, Thermasil, Calsilite, Caltomo, Mari: . b. Magnesia, pipe, block, board, insulating come - 2- March 26, 1973 ' I: Asbestos fiber by weight: 15# to 20# . Tradenames : Kaythern, Cal therm, Therraalite c) Diatomaceous Earth, Pipe, block, board, insulating cement ^1 Asbestos fiber by weight: 20# to k0f> 4 Trade-name: Superex, Enduro, Careytemp -A). ") : Unibestos, pipe and block. Asbestos fiber by v/eight: Trade name: Unibestos t 60# to 80# Insulating and Finishing cernantsAsbestos fiber by weight: 5# to 100# Trade names: All - too numerous to list f ) Sprayed fibers.. Asbestos fiber by weight: 3# to 85# ' ' Trade names: Asbestospray, Mono Spray, Pyrospray, Cafco, Blaze shield, Limpet, Armaspray, others. _ . g) Cement asbestos board, sheet, pipe. Asbestos fiber by weight: 5# to 20#/ . Trade names: Transite, Maranite, CA board,.others ** h) Asbestos cloth 1 Asbestos fibers by weight: 90# to 100# Trade names : All As of early 1973 most insulation manufacturers are producing "asbestos-free11, insulations in most of the above general types without price markup. We strongly recommend that all maintenance and operating plant revisions of thermal insula tions specify that only "aspestos-free11 products be used. Your cooperation in passing along the above informt! to all involved operating personnel is requested and appreciate JDM: ms 9901-00017245 FORBES-RkeGen ur