Document 5b0Q8GoJ8Mm9344jZXBvx7XN5

. j iv. v v | As 'b-Z-'S 'Jd S' 1 SHELL OIL COMPANY "TTiimrtnminr i r<& tcmtKi DECEMBER 6, 1977 CORPORATE MEDICAL DIRECTOR MEDICAL SURVEILLANCE UNDER ASBESTOS STANDARD The memo on this subject dated November 13, 1972 from the Manager - Industrial Hygiene and the Corporate Medical Director recommended exposure levels at which medical surveillance should be instituted. Since that time, recommendations for allowable exposures have been lowered. This fact, along with the recent decision in the GAF case (see attached legal opinion), leads me to reappraise the former recommendation. On the basis of the legal opinion. Corporate Medical now believes it would be appropriate and prudent to include in the medical surveillance programs all employees in the following categories: 1. All employees whose jobs require them to work regularly with asbestos, or asbestos-containing insulation and other products. This would include, but not be limited to, employees recognized or assigned as insulators. 2. All other employees who may use or be in contact with asbestos or asbestos-containing materials where the level of exposure can be established as exceeding 0.1 fibers greater than 5 microns' in length per cubic centimeter (TWA). When appropriate air monitoring has established which employees are to.be included in the medical surveillance program at each location, I would appreciate receiving a list of the names of employees so identified. I would be happy to discuss this further should you have any questions. Attachment R. E. Joyner, M.D. Corporate Medical Director lam 002119 DPMC-17809 ADDRESSEES Messrs. P. F. Deisler W. A. Carpenter M. K. Seggerman D. P. Atwood B. F. Aurelius R. L. Brunner W. M. Cunningham P. A. Dennie F. H. Douma B. D. Earthman H. T. Egliht E. J. Geggis G. E. Gutierrez w. E. Hale W. R. Harp K. E. Jacobs R. P. Kastner H. L. Kusnetz J. B. Lewis E. L. Raulston T. J. Ryan G.' J. Schmidt <F. R. Jonas, M.D. D. E. Miller, M.D. THIS COPY FOR C. E. Ross, D.O. J. G. Simpson, M.D. M. B. Slomka, M.D., Ph.D. W. M. Stumpe, M.D. For Information Mr. R. S. Clark - Shell Pipe Line Company LAM 002120 DPMC-17810 sv w i SHELL OIL COMPANY ffEMCE date NOVEMBER 22, 1977 io HEALTH, SAFETY AND ENVIRONMENT - CORPORATE MEDICAL DIRECTOR - DR. R. E. JOYNER mom ENVIRONMENT, LABOR AND LITIGATION DEPARTMENT HEAD OFFICE LEGAL subject OSHA ASBESTOS STANDARD MEDICAL EXAMINATIONS .f r^rn LAM 002121 *rynn F Aurelius Attachment ff E ii u I V 0 cc: (w/Attachment) ISM 23 'H - Head Office Manufacturing - Safety and Health - Manager - R L. Brunnei Safety and Industrial Hygiene - Manager - H. L. Kusnetz CORPORATE UCD4CAI u ___ _CER MFS FRJ iOS J8d MR CAS RAO VIM AOS MX 3*3 JCH" RJ.1 /T ACTION .X l"ErOWMATJON " C rue HiiTH npMn-i7Hii iti-n-orc (i*ts| SHELL OIL COMPANY SHELL CHEMICAL COMPANY DEER PARK MANUFACTURING COMPLEX TO DEER PARK MANUFACTURING COMPLEX MAINTENANCE ENGINEER - MANAGER DATE SEPTEMBER 16, 1976 FROM INDUSTRIAL HYGIENIST DEER PARK MANUFACTURING COMPLEX SUBJECT ASBESTOS SAFETY BULLETIN This is in response to a question from your organization regarding the fate of asbestos fibers which are inhaled. Please see that this answer is coordinated within your organization and forwarded to J. W. Dickens. Airborne asbestos material will usually consist of a wide range of fiber sizes. The fiber size is the primary factor which determines what happens to the fiber that has been inhaled. The larger fibers will be filtered by nasal hair or be trapped by the wet surfaces of the upper respiratory tract. Fibers small enough to enter the lungs can adhere to the lung surface or eventually be exhaled through normal breathing. The lung has biological mechanisms to guard against the deposition of foreign material. The lung surface is lined with minute hairs which transport dust particles such as asbestos fibers from the lungs to esophagus where the material is expectorated or swallowed. Fibers reaching the deepest portions of the lungs, where the tiny hairs do not exist, can be absorbed into blood capillaries or captured by special cells and stored in the lungs. The best available information about exposure levels and incidence of injury was studied in the development of a safe exposure level. The purpose of the exposure limit is to prevent a person from inhaling so many fibers that collectively they cause lung injury. Therefore, a limit of two fibers per cubic centimeter of air was judged as providing adequate protection against injury. By following the work procedures covered in the safety bulletin, environmental levels can be kept well below the permissible exposure limit. The use of approved respirators to supplement the work procedures is additional insurance against exposure. JDR:bc cc - R. L. Bryan D. E. Miller F. G. Reitz J. L. Rivard File Chron LAM 002122 DPMC-17812