Document aJ55a61GGNbG1K1k3x1VD4nnM

FILE NAME: Exxon (EXX) DATE: 1972 Oct 9 DOC#: EXX101 DOCUMENT DESCRIPTION: Letter from Humble Oil RE Discontinuance of New Asbestos Insulation in Ships H U M B L E OIL & REFINING COMPANY POST O F F I C E BOX 1512 HOUSTON, TEXAS 77001 MARINE DEPARTMENT r. A M I S S M I T H O PSftA TIO M M A N A O M C A I U A D D A I! "STANSHII* H O U STO N " October 9, 1972 Circular Letter 0-6 1-3-5 P Asbestos Insulation M-78-09 TO MASTERS AND CHIEF ENGINEERS OF HUMBLE OPERATED OCEAN VESSELS AND ENCO SUNSHINE STATE Dear Sir: Effective immediately, discontinue the application of insulating materials containing asbestos. In the future use "Super Caltemp" which is asbestosfree calcium silicate inhibited to prevent stress corrosion cracking of stainless steel. Super Caltemp comes in pipe covering forms, blocks, pre-formed elbows, and cement. It is suitable for temperatures up to 1200F. Present supplies of asbestos insulating materials should be packed in cardboard boxes, sealed closed, and marked "Asbestos Not To Be Used On This Vessel - Do Not Open Unless A Dust Mask Is Worn". Persons packing the cartons should wear dust masks. We will advise at a later date the disposition of the boxes of asbestos. The use of asbestos insulation is being discontinued because the Occupa tional Safety and Health Standards (CFR 1910.93) indicates that under certain circumstances, it can be a health hazard. Please get in touch with this office if you have any questions on this matter. ' TJMcT:er A. Fellows F. Winzer B. Crawford J. Gordon K. Waldorf L. Hughes R. Caldwell Dr . J. G. Lione T. J. McTaggart Port Engineer SeaRiver/Bellomo 0002211