Document 5L67ZRJ8QJGzQ9EGZq7ZdoE90
SM-32 (REV. 5*78)
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Shell Oil Company
Interoffice Memorandum
JULY 28, 1986
4.
FROM:
SR. INDUSTRIAL HYGIENIST, HEALTH & SAFETY, MFG. & TECH.
TO: SEE ATTACHED DISTRIBUTION LIST
SUBJECT: ASBESTOS MONITORING SUMMARY
Attached for your information is a preliminary summary of eight-hour TWA monitoring data collected at Shell locations since 1978. Generally this summary reflects data entered into the Health Surveillance System.
The purpose of reviewing the data collectively is to aid in assessing the exposure potential of generic tasks throughout Shell Manufacturing and to identify opportunities for sharing successful control strategies. This review is not intended to substitute for the "initial determination" required under the revised asbestos standard.
1 Please note that the following definitions were used in categorizing the monitoring data by type of exposure potential.
"Major Removal" - The objective of the job monitored was in fact asbestos removal. Examples would include demolition work and the removal of insula tion on two exchangers during a turnaround. This category also includes laborers cleaning up debris.
"Incidental Exposure" - The purpose of the job monitored was other than insulation stripping and the exposure occurred as a natural consequence of the work done. Examples include working on piping immediately adjacent to exposed asbestos, an operator knocking insulation out of the way, car penters building scaffolding next to exposed asbestos, etc.
"Other" - The employee monitored worked in the vicinity of the potential exposure, but had no known direct contact. Examples include a hole watch, an operator who is responsible for an area where a removal operation is underway, employees working downwind of removal operations, etc.
The other categories such as brake repair, inside demolition, transite cutting, and gasket handling appear to be self-explanatory.
Although this database will be updated as additional TWA data is submitted, the preliminary data does appear to suggest that differences do exist be tween locations, especially in the category of "major removal". Comments and suggestions on the proposed approach are welcome.
BT8620602
ABS-061196 LAM 031410
2
As we become more familiar with the asbestos exposure potential for each _ exposure-task category, it would also be useful to better understand the ' underlying workpractices. Accordingly, it is requested that currently available written procedures for handling asbestos be submitted to Health & Safety, Mfg. & Tech. Either a generic procedure incorporating the best of approaches will be prepared or the most comprehensive will be shared with other locations. Thanks again.
P. J. Snyder PJSrbjd Attachment cc: A. D. Ditmar
J. D. Ransdell J. L. Rivard
BT8620602
ABS-061197 LAM 031411
INDUSTRIAL HYGIENE REPRESENTATIVES
ANACORTES REFINERY D. D. SMART
DEER PARK MANUFACTURING COMPLEX A. F. SCHMIT
GEISMAR PLANT M. T. BARCLAY
MARIETTA PLANT M. W. HERSHMAN
MARTINEZ MANUFACTURING COMPLEX M. B. KOVACEVICH
NORCO MANUFACTURING COMPLEX A. K. MENARD
ODESSA REFINERY E. N. GEE
TAFT PLANT J. J. DELAUNE
WILMINGTON MANUFACTURING COMPLEX S. V. SEVER
WOODBURY PLANT R. NOCCO
WOOD RIVER MANUFACTURING COMPLEX W. M. CUNNINGHAM
BT8620602
ABS-061198 LAM 031412
SUMMARY Of ASBESTOS MONITORING DATS ON FILE NO. OF SAMPLES COLLECTED BY EXPOSURE RANGE
CATEGORY:MAJOR REMOVAL
LOCATION
TOTAL HUMBER
MEASUREMENT CATEGORIES IN F/CC, e HOUR TNA
.01- 05
.04-. 10
.11-.15
DPMC
38 22
7
2
NORCO
<? 2
1
0
WILMINGTON 18 8 8 2
WOODBURY
21
10
WOUDRIVLR
12 0
14.
1
H(lHI INEZ
0
GEISMAR
0
TOTAL
78 33
19
5
.16-.2
2 2 0 0 2
6
PERCENT EXCEEDING .05 F/CC PERCENT EXCEEDING . 10 PERCENT EXCEEDING .2
5B.007. 34.007. 20.002
CATEGORIES OF POTENTIAL EXPOSURE
CATEGORY:OTHER
DPMC HORCO WILMINGTON WOODBURY WOODRIVER m*time:
ittAR
TOTAL
0 0 11 0 4
J
2
22
0 Cl 9 0 3 5 2
19
A. INTERIOR DEMOLITION
0 DEMOLITION,STRIPPING,l CLEANUP
0 B.
c.*
4.
MAJOR REMOVAL INCIDENTAL EXPOSURE
0
D. BRAKE REPAIR
,
1 E. TRANSITE CUTTING
0 F. TRANSITE REMOVAL t INSTALLATION
0 G. HANDLING OF GASKETING MATERIAL
H. OTHER
-
*
PERCENT EXCEEDING .052
13.442
CATEGORY:INCIDENTAL EXPOSURE
DPMC
0
NORCO
0
WILMINGTON
18 14
30
1
WOODBURY
0
WOODRIVER
11
00
0
MARTINEZ
0
GEISMAR
0
TOTAL
19 15
30
1
PERCENT EXCEEDING .05
21.052
>.2
5 4 0 0
7
16
2 > .1 F/CC F THIS LOCATION
23.6B7. 66.672 11.112 N/A 83.337.
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ABS-061202
LAM 031416
JULY 28, 1986
A. F. SCHMIT DEER PARK MFG. COMPLEX
Al:
You'll note that the DPMC data includes considerable data that doesn't appear in the HSS. This was selectively extracted from "the books" last month when I visited. Peak data, non-TWA samples and area measurements have been excluded.
Attachment BT8620901
P. J. SNYDER
JULY 28, 1986
. A. K. MENARD NORCO MFG. COMPLEX Kirk:
You'll note that the Norco data includes more than in the HSS. I essen tially worked off the data you sent in last month.
Attachment BT8620901
P. J. SNYDER
ABS-061203
LAM 031417
JULY 28, 1986
S. V. SEVER WILMINGTON HFG. COMPLEX
Sharon:
Please note that your data which was collected at random is not included since it just substantiates that workers with no foreseeable exposure aren't exposed above 0.1 f/cc. I hope I haven't left out any significant pieces of data. Under separate cover I'll be sending you a copy of the data disk. Regarding the asbestos welding blankets, seems like a bad idea.
Attachment
BT8620901
P. J. SNYDER
ABS-061204
LAM 031418