Document nBw5drKrgX2R3Zv8zK1mp561
John A. Jurgiel & Associates, Inc.
<$ndust\ial jKygiene Consultants
January 12, 19B7
1810 CRAIG ROAD. SUITE 207 ST. LOUIS. MISSOURI 83148 (314) 878-8888
Mr. Bill Cunningham Industrial Hygiene Manager Shell Oil Co. PO Box 262 Wood River, IL 62095
Dear Bills
An airborne asbestos survey was conducted on January 3, 19B7. Asbestos containing materials were removed from a process line on the west vacuum flasher furnace. A 7-man crew comprised of Shell Insulators performed this removal project.
A total of 8'airborne samples were collected during the removal project. Personnel samples ranged from 0.01 - 0.26 fibers per cubic centimeter (f/cc). One sample did exceed the Occupational Safety and Health Administration (OSHA) Asbestos Standard 1926.55(c) of 0.2 f/cc. Personnel were equipped with half mask SurvtVjair, and Mine Safety Appliance (MSA) full and half mask respirators. A high efficiency particulate filter was the selected cartridge. Additional protective equipment consisted of disposable coveralls and gloves. Three area samples collected at the perimeter of the controlled area indicated airborne fibers below detectable limits of analysis (i.e. less than 0.01 f/cc).
The following conditions attributed to elevated airborne fiber concentrations during removal: 1) the colder temper atures (29 degrees F) minimized wetting techniques, 2) the the 7-man crew removed asbestos at a higher than normal rate, and 3) the lack of a negative air pressure machine while working in an enclosure. However, a negative pressure is limited in its ability to reduce personnel exposure in an
enclosure. Work practices and proper wetting of asbestos material are by far more effective control measures.
Please call if you have any questions regarding this report.
Very truly yours.
Industrial Hygienist Enc. SWH/bsm
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Table 1 (continued)
*Sample obtained were blank corrected
Method of Col lection; Airborne samples were collected with MSA Model G SKC 224-43, and Gilian HFS, 113A sampling pumps. This strumentation was calibrated before and after survey. Sampling media consisted of an open-faced 25 millimeter 0.8 micron mixed cellulose ester filter.
in
Method of Analysis: Samples were analyzed in accordance with NIOSH asbestos fibers in air procedures* NIOSH 7400 Method.
LAM 026683 ABS-056814
TABLE 1
RESULTS OF PERSONAL AND PERIMETER MONITORING FOR AIRBORNE ASBESTOS
Shell Oil Company (DU-2 Nest Vacuum Flasher Furnace)
Wood River* Illinois
January 3, 19S7
Sample #/Time
Employee/Description
Airborne Fiber Con centration
(f/cc)
8--hour TWA (f/cc)
WRMC 870103-1 0045-0225 0343-0515
WRMC 870103-2 0049-0226 WRMC 870103-7 0343-0515
WRMC 870103-3 .0050-0225
0343-0515
WRMC 870103-4 0100-0520
Perimeter Abatement imately 4 P-39046
North of Area. Approxfeet east of
WRMC 870103-5 0106-0521
Perimeter Northwest Corner of Abatement Area, Pump Alley
WRMC 870103-6 0112-
Perimeter South of Abatement Area. 9 Feet from East Furnace
WRMC 070103-8
Blank *
0.24
1.0 0.31
0.034
<0.01
<0.01
Void 3 Fibers/ 100 Fields
f/cc -- fibers per cubic centimeter TWA = Time Weighted Average
0.10 0.26 0.01
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