Document Ggyy5a25NEJKQg2maoxg7MQ7
John A. Jurgiel & Associates, Inc.
January 12. 1"H7
1810 CRAIG ROAO. SUITE 207 ST. LOUIS. MISSOURI 63M6 13141 878-8888
Mr. Sill Cunninqham Industrial Hyqiene Manager Shell Oil Co. PO Sox 262 Wood River. IL 62095
\
Dear Bill:
On airborne asbestos survey was coni'hir ted on January 3. 1997. Asbestos containing materials were removed from a process line on the west vacuum flasher furnace. A 7-man crew comprised of Shell Tnsulatois performed this removal project.
A total of S airborne samples were collected during the removal project. Personnel samples ranged from O.nl - 0.26 fibers per cubic centimetei (f/cc! . One sample did exceed the Occupational Satotv and Health Administration (OSHA) Asbestos Standard 1926.55(c) of 0.2 f/cc. Personnel were equipped with half mask SurWvj a i r. 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 (-overalls 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 P) 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 workinq in an enclosure. However, a negative pressure is limited in its ability to reduce personnel exposure in an r >!, ifcw enclosure. Work practices and proper wet t i no of asbestos material are by far more effective control measuies.
Please call if you have any questions rpqai dinri this i epor t .
Vcm / truly yours.
Industrial Hyqienist Enc . SWH/bsm
LAM 019613 ABS-000423
jC
TABLE 1
RESULTS OF PERSONAL AND PERIMETER MONITORING FOR AIRBORNE ASBESTOS
Shell Oil Company \ (DU-2 West 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 03*43--0515
337-52-0952
WRMC B70103-2 0049-0226 WRMC 870103-7 0343-0515
322-46-6934
WRMC 870103-3 0050-0225 0343-0515
357-52-8120
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
LAM 019614 ABS-000424
Table 1 (continued)
Sample obtained were blank corrected.
Method of Collection; 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 019615 ABS-000425