Document 8VkMMz6RdvaqvL8kJYb1Eb2Ly

UNION! CARBIDE CORPORATION technical center '"'"'"'A. F. Terry c' 704 L," 51 1 o. E. Liana - 740/2322 c. P. Maxwell - 701/2 R. G Rowe, M,.0. - 791 C. L. Ruddle -- 704 R. E. Sergent - 704 Industrial Hygiene Asbestos Exposure Monitoring Attached are the results of the Asbestos exposure monitoring performed on R. P. Hess and J. W. Greenlee. The monitoring was done on May 7, 1987 while they removed approximately 50 feet of insulation in the Building 705 Electrical room, which was enclosed with a negative pressure enclosure (HEPA filtered). Since it was inside of the electrical room, the removal was done dry. The insulators were equipped with full face supplied air, 2 pair of coveralls with headcover, boots and coveralls. They showered before reapplying street clothes. The exposure results indicate that the levels were more than five times the 0.2 fiber/cc Permissible Exposure Level (PEL) established by OSHA. The area sample, collected just outside of the enclosure near the exhaust air stream and an exit, was higher than what we would expect. Extra care should be taken whenever entering or exiting the enclosure to prevent airborne fibers from escaping. An 8-hour Time Weighted Average (TWAg) was not calculated because it is not known if Asbestos Exposure occurred during the period of time before or after the monitoring. Since the monitoring results were very high, we require the continuation of wearing Full Face Supplied Air, even if the Insulators are wearing monitoring pumps. We are also recommending the use of the HEPA Vacuum cleaner located at the source, whenever dry removal takes place, in order to capture fibers immediately upon becoming airborne. UCC 024317 ASBESTOS MONITORING - continued 2- - May 27, 1987 Please notify R. P. Hess, 0. W. Greenlee and F. R. Creech of these monitoring results as soon as possible. (F. R. Creech was involved with the removal but was not monitored.) Please have them sign and date this report and return to M. A. Patel at Building 701-330. If we can be of further assistance, please feel free to call us on extension 4779 or 3750. WORK BY: APPROVED BY: Vance E. Stover Attachment VES:MAP:rab 2348P QA Q.Pcdi}. Mannar AT Patel UCC 024318 ASBESTOS EXPOSURE MONITORING Computer ref. W?208 Date 5-7-87 Sanple Type/ Employee Name Sampling Time Air Cone fibers/cc fibers/cc COMMENTS Personal/ 5hrs 29min 1.139 - Collected while dry removing approx. R. P. Hess 50 feet of Asbestos frem steam lines in electrical room. 5-7-87 Personal/ 5hrs 24min J. W. Greenlee 5-7-87 Area 5hrs 25min 1.136 0.0226 - Collected while assisting R. P. Hess i.e., bagging, cleaning up, etc. COllected just outside of the enclosure near the exhaust air stream (HEPA filtered). An exit door was also established near tie fan. ASBESTOS Permissible Exposure Level TVftg 0.2 fibers/cc OSHA Action Level 0.1 fibers/cc 23ASP UCC 024319